Fix #16

Don't fail build on missing translation

.gitignore

@@ -0,0 +1,30 @@
+tmp/
+*.tmp
+*.bak
+*.log
+*~*
+*.iml
+out/
+.idea/
+*.ipr
+*.iws
+.gradle
+app/build/
+build/
+gradle-app.setting
+!gradle-wrapper.jar
+*.class
+.mtj.tmp/
+*.jar
+*.war
+*.ear
+hs_err_pid*
+*.apk
+*.ap_
+*.dex
+bin/
+gen/
+local.properties
+proguard/
+.navigation/
+gen-external-apklibs

.idea/.name

@@ -1 +0,0 @@
-EnigmAndroid

.idea/compiler.xml

@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <option name="DEFAULT_COMPILER" value="Javac" />
-    <resourceExtensions />
-    <wildcardResourcePatterns>
-      <entry name="!?*.java" />
-      <entry name="!?*.form" />
-      <entry name="!?*.class" />
-      <entry name="!?*.groovy" />
-      <entry name="!?*.scala" />
-      <entry name="!?*.flex" />
-      <entry name="!?*.kt" />
-      <entry name="!?*.clj" />
-    </wildcardResourcePatterns>
-    <annotationProcessing>
-      <profile default="true" name="Default" enabled="false">
-        <processorPath useClasspath="true" />
-      </profile>
-    </annotationProcessing>
-  </component>
-</project>
-

.idea/copyright/profiles_settings.xml

@@ -1,3 +0,0 @@
-<component name="CopyrightManager">
-  <settings default="" />
-</component>

.idea/dictionaries/vanitas.xml

@@ -1,9 +0,0 @@
-<component name="ProjectDictionaryState">
-  <dictionary name="vanitas">
-    <words>
-      <w>plugboard</w>
-      <w>ringsetting</w>
-      <w>ringsettings</w>
-    </words>
-  </dictionary>
-</component>

.idea/encodings.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="Encoding" useUTFGuessing="true" native2AsciiForPropertiesFiles="false" />
-</project>
-

.idea/gradle.xml

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="distributionType" value="LOCAL" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleHome" value="$APPLICATION_HOME_DIR$/gradle/gradle-2.2.1" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-          </set>
-        </option>
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>
-

.idea/libraries/support_annotations_21_0_3.xml

@@ -1,11 +0,0 @@
-<component name="libraryTable">
-  <library name="support-annotations-21.0.3">
-    <CLASSES>
-      <root url="jar:///media/Daten/AndroidSDK/android-sdk-linux/extras/android/m2repository/com/android/support/support-annotations/21.0.3/support-annotations-21.0.3.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES>
-      <root url="jar:///media/Daten/AndroidSDK/android-sdk-linux/extras/android/m2repository/com/android/support/support-annotations/21.0.3/support-annotations-21.0.3-sources.jar!/" />
-    </SOURCES>
-  </library>
-</component>

.idea/libraries/support_v4_21_0_3.xml

@@ -1,13 +0,0 @@
-<component name="libraryTable">
-  <library name="support-v4-21.0.3">
-    <CLASSES>
-      <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-v4/21.0.3/libs/internal_impl-21.0.3.jar!/" />
-      <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-v4/21.0.3/classes.jar!/" />
-      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-v4/21.0.3/res" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES>
-      <root url="jar:///media/Daten/AndroidSDK/android-sdk-linux/extras/android/m2repository/com/android/support/support-v4/21.0.3/support-v4-21.0.3-sources.jar!/" />
-    </SOURCES>
-  </library>
-</component>

.idea/misc.xml

@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="EntryPointsManager">
-    <entry_points version="2.0" />
-  </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="masterDetails">
-    <states>
-      <state key="ProjectJDKs.UI">
-        <settings>
-          <last-edited>Android API 19 Platform</last-edited>
-          <splitter-proportions>
-            <option name="proportions">
-              <list>
-                <option value="0.2" />
-              </list>
-            </option>
-          </splitter-proportions>
-        </settings>
-      </state>
-    </states>
-  </component>
-</project>
-

.idea/modules.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/EnigmAndroid.iml" filepath="$PROJECT_DIR$/EnigmAndroid.iml" />
-      <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
-    </modules>
-  </component>
-</project>
-

.idea/scopes/scope_settings.xml

@@ -1,5 +0,0 @@
-<component name="DependencyValidationManager">
-  <state>
-    <option name="SKIP_IMPORT_STATEMENTS" value="false" />
-  </state>
-</component>

.idea/vcs.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="" vcs="Git" />
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
-

CHANGELOG.md

@@ -0,0 +1,99 @@
+# Changelog EnigmAndroid
+
+## v1.0.2-01.01.2019
+### Changes
+* Added support for fastlane metadata
+* Remove What's new dialog
+
+## v1.0.1-12.01.2018
+### Changes
+* Added language: Brazilian-Portuguese
+
+## v1.0.0-05.05.2017
+### Changes
+* Added Enigma KD
+* Added "protocol version" to QR-Code-shared configuration strings.
+    This breaks backwards compatibility to older versions, but I added it to enable backwards compatibility in upcoming releases.
+* Configurations can now be shared to EnigmAndroid as text
+* Moved preference management to SettingsActivity
+* Added dialog to choose whether to share configuration via text or via QR-code
+* Same for receiving
+* Added TextBox to configuration-share-dialog that lets the user see and copy the 
+    configuration string.
+* Added Whats-new-Dialog
+* New Icon!
+* Added Script to automatically generate icons
+* Reformatted code
+### TODO
+* Add tips on long clicks at parts
+* Move KD right below K
+* Add intent filters to recognize and automatically handle shared/copied configuration Strings .These are Strings starting with "EnigmAndroid/"
+* Write tests to ensure correct functionality (Pull Requests welcome)
+* Add multi-Enigma (select any rotor/reflector etc. Probably wont happen too soon)
+
+## v0.1.9-09.10.2015
+### Changes
+* Added option to share/receive configurations via QR-Code (ZXing Barcode Scanner)
+* Prevent user from setting incomplete reflector wiring
+* Add option to generate configuration from passphrase
+* Reworked Enigma definition (available Rotors/Reflectors/ Entrywheels
+* Completely verified correct functionality of Enigma T
+* Added number spelling in spanish, italian
+* Added backwards compatibility to API level 10 (Gingerbread 2.3.3)
+
+## v0.1.8-27.09.2015
+### Changes
+* Added Enigma G31
+* Added Enigma G312
+* Added Enigma G260
+* Replaced Enigma K with Enigma K, K (Swiss) and K (Swiss, Airforce)
+* Added Enigma R
+* Changed identifiers of enigma models
+* Changed landscape layout of enigma model d
+* Updated the about-dialog text.
+* Shortened EnigmaStateBundle
+* Added different colors to the plugboard-/pluggable reflector dialog. This helps to differentiate connections.
+* Reworked InputPreparer using decorator pattern and added options to customize input preparation
+* Reworked Reflector-/Rotor creation/management
+* Added Button to set the Enigma into a random configuration
+
+## v0.1.7-15.09.2015
+### Changes
+* Added Enigma K
+* Added Enigma T
+* Created Plugboard-/pluggable Reflector-Setting-Dialog
+
+## v0.1.6-10.09.2015
+### Changes
+* Fixed about dialog (outdated manual)
+* Updated CHANGELOG (oops)
+* Added Enigma D
+* Added rotor names to ringSettingsDialog
+* Reworked major parts of the app once again :)
+* Added option to break messages up into blocks
+
+## v0.1.5-27.08.2015
+### Changes
+* Added french number spelling
+* Added Enigma Models M3, M4
+* Added option to select different enigma models into options menu
+* Added developer class for simple rotor creation (not a feature in the app)
+* Fixed broken ring settings
+* Fixed false reset of ring settings when switching from/to landscape mode
+
+## v0.1.4-15.08.2015
+### Changes
+* Reworked the core implementation to follow some principals of Software Engineering
+* Fixed some layout issues
+* Fixed anomaly for step by step inputs
+* Added send/receive text functionality
+* added missing licenses to class files
+* Added proper documentation
+* Extended input interpretation (number spelling in different languages, any unknown special character now becomes 'X'
+
+## v0.1.3-14.03.2015
+### Changes
+* Added About Dialog with ChangeLog-Button
+* Moved Version Info into About Dialog
+* Updated License Files
+* Fixed Landscape Layout

CHANGELOG.txt

@@ -1,14 +0,0 @@
-CHANGELOG ENIGMANDROID
-
-v0.1.4-15.08.2015<
-*Rewrite of the core implementation to follow some principals of Software Engineering
-*Fixed some layout issues
-*Fixed anomaly for step by step inputs
-*Added send/receive text functionality
-
-
-v0.1.3-14.03.2015<
-*Added About Dialog with ChangeLog-Button
-*Moved Version Info into About Dialog
-*Updated License Files
-*Fixed Landscape Layout

EnigmAndroid.iml

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module external.linked.project.id="EnigmAndroid" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$" external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
-  <component name="FacetManager">
-    <facet type="java-gradle" name="Java-Gradle">
-      <configuration>
-        <option name="BUILD_FOLDER_PATH" value="$MODULE_DIR$/build" />
-        <option name="BUILDABLE" value="false" />
-      </configuration>
-    </facet>
-  </component>
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7" inherit-compiler-output="true">
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <excludeFolder url="file://$MODULE_DIR$/.gradle" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>

License.md

@@ -1,280 +1,676 @@
-GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/>
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
                             Preamble
 
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Lesser General Public License instead.)  You can apply it to
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
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 your programs, too.
 
   When we speak of free software, we are referring to freedom, not
 price.  Our General Public Licenses are designed to make sure that you
 have the freedom to distribute copies of free software (and charge for
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   The precise terms and conditions for copying, distribution and
 modification follow.
 
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+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
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-modifying or distributing the Program (or any work based on the
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+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
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-  6. Each time you redistribute the Program (or any work based on the
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+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
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+11 of the WIPO copyright treaty adopted on 20 December 1996, or
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+  When you convey a covered work, you waive any legal power to forbid
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+  4. Conveying Verbatim Copies.
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+  You may convey verbatim copies of the Program's source code as you
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+  6. Conveying Non-Source Forms.
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+  You may convey a covered work in object code form under the terms
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+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
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+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
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+  When you convey a copy of a covered work, you may at your option
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+  All other non-permissive additional terms are considered "further
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+  Additional terms, permissive or non-permissive, may be stated in the
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+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
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+modify it is void, and will automatically terminate your rights under
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+
+  However, if you cease all violation of this License, then your
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+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
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+your receipt of the notice.
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+  Termination of your rights under this section does not terminate the
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+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
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+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
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+  You may not impose any further restrictions on the exercise of the
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+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
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+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
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 this License.
 
-  7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
-conditions are imposed on you (whether by court order, agreement or
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
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+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
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+sue for patent infringement).  To "grant" such a patent license to a
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+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
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+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
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+receiving the covered work authorizing them to use, propagate, modify
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+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
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+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
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+parties who would receive the covered work from you, a discriminatory
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+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
 
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
+  13. Use with the GNU Affero General Public License.
 
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
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-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
 
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
+  14. Revised Versions of this License.
 
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
 
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
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-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
 
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
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-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
 
-                            NO WARRANTY
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
 
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
+  15. Disclaimer of Warranty.
 
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    {one line to give the program's name and a brief idea of what it does.}
+    Copyright (C) {year}  {name of author}
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    {project}  Copyright (C) {year}  {fullname}
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
 
-                     END OF TERMS AND CONDITIONS

README.md

@@ -1,2 +1,24 @@
 # EnigmAndroid
-Android implementation of the famous Enigma machine
+
+
+[<img src="https://f-droid.org/badge/get-it-on.png" alt="Get it on F-Droid" height="80">](https://f-droid.org/app/de.vanitasvitae.enigmandroid)
+
+Android implementation of the famous Enigma machine.
+
+Check out the website at [Jabberhead.tk](https://blog.jabberhead.tk/EnigmAndroid/).
+
+## Screenshots
+
+<div style="display:flex;" >
+	<img src="https://raw.githubusercontent.com/vanitasvitae/EnigmAndroid/master/fastlane/metadata/android/en-US/images/phoneScreenshots/shot_01.png" width="40%" >
+	<img src="https://raw.githubusercontent.com/vanitasvitae/EnigmAndroid/master/fastlane/metadata/android/en-US/images/phoneScreenshots/shot_02.png" width="40%" style="margin-left:15px;" >
+</div>
+
+<div style="display:flex;" >
+        <img src="https://raw.githubusercontent.com/vanitasvitae/EnigmAndroid/master/fastlane/metadata/android/en-US/images/phoneScreenshots/shot_03.png" width="40%" >
+        <img src="https://raw.githubusercontent.com/vanitasvitae/EnigmAndroid/master/fastlane/metadata/android/en-US/images/phoneScreenshots/shot_04.png" width="40%" style="margin-left:15px;" >
+</div>
+
+If you want to support me with a donation, feel free to do so :)
+
+btc: 1MW2DobbNFfcjxTSYzJhtkmiNS7efwaWFX

app/.gitignore

@@ -1 +1,4 @@
 /build
+/src/main/java/de/vanitasvitae/enigmandroid/enigma/util/
+/src/androidTest/
+/src/main/res/render-icon.sh

app/app.iml

@@ -1,95 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module external.linked.project.id=":app" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/.." external.system.id="GRADLE" external.system.module.group="EnigmAndroid" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
-  <component name="FacetManager">
-    <facet type="android-gradle" name="Android-Gradle">
-      <configuration>
-        <option name="GRADLE_PROJECT_PATH" value=":app" />
-      </configuration>
-    </facet>
-    <facet type="android" name="Android">
-      <configuration>
-        <option name="SELECTED_BUILD_VARIANT" value="debug" />
-        <option name="SELECTED_TEST_ARTIFACT" value="_android_test_" />
-        <option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
-        <option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
-        <option name="ASSEMBLE_TEST_TASK_NAME" value="assembleDebugAndroidTest" />
-        <option name="COMPILE_JAVA_TEST_TASK_NAME" value="compileDebugAndroidTestSources" />
-        <afterSyncTasks>
-          <task>generateDebugAndroidTestSources</task>
-          <task>generateDebugSources</task>
-        </afterSyncTasks>
-        <option name="ALLOW_USER_CONFIGURATION" value="false" />
-        <option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
-        <option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
-        <option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/src/main/res" />
-        <option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
-      </configuration>
-    </facet>
-  </component>
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7" inherit-compiler-output="false">
-    <output url="file://$MODULE_DIR$/build/intermediates/classes/debug" />
-    <output-test url="file://$MODULE_DIR$/build/intermediates/classes/androidTest/debug" />
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/resValues/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/resValues/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/res" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/aidl" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/jni" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/jni" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/rs" isTestSource="true" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/assets" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/bundles" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/classes" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/coverage-instrumented-classes" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/dependency-cache" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/dex" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/dex-cache" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/exploded-aar/com.android.support/support-v4/22.2.1/jars" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/jacoco" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/javaResources" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/libs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/lint" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/manifests" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/ndk" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/pre-dexed" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/proguard" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/res" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/rs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/symbols" />
-      <excludeFolder url="file://$MODULE_DIR$/build/outputs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/tmp" />
-    </content>
-    <orderEntry type="jdk" jdkName="Android API 22 Platform (1)" jdkType="Android SDK" />
-    <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" exported="" name="support-v4-22.2.1" level="project" />
-    <orderEntry type="library" exported="" name="support-annotations-22.2.1" level="project" />
-  </component>
-</module>

app/build.gradle

@@ -1,23 +1,28 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 21
-    buildToolsVersion "20.0.0"
+    compileSdkVersion 25
+    buildToolsVersion "25.0.3"
 
     defaultConfig {
         applicationId "de.vanitasvitae.enigmandroid"
-        minSdkVersion 15
-        targetSdkVersion 21
-        versionCode 9
-        versionName "0.1.3-14.03.2015-beta"
+        minSdkVersion 11
+        targetSdkVersion 25
+        versionCode 18
+        versionName "1.0.2-01.01.2019"
     }
+
     buildTypes {
         release {
         }
     }
+
+    lintOptions {
+        disable 'MissingTranslation'
+    }
 }
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:support-v4:21.+'
+    compile 'com.android.support:support-v4:25.3.1'
 }

app/src/androidTest/java/de/vanitasvitae/enigmandroid/ApplicationTest.java

@@ -1,13 +0,0 @@
-package de.vanitasvitae.enigmandroid;
-
-import android.app.Application;
-import android.test.ApplicationTestCase;
-
-/**
- * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
- */
-public class ApplicationTest extends ApplicationTestCase<Application> {
-    public ApplicationTest() {
-        super(Application.class);
-    }
-}

app/src/main/AndroidManifest.xml

@@ -4,9 +4,10 @@
 
     <application
         android:allowBackup="true"
+        android:fullBackupContent="false"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
-        android:theme="@style/AppTheme" >
+        android:theme="@style/AppTheme">
         <activity
             android:name=".MainActivity"
             android:label="@string/app_name" >
@@ -15,6 +16,12 @@
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
+            <intent-filter>
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="text/plain" />
+            </intent-filter>
         </activity>
         <activity
             android:name=".SettingsActivity"

app/src/main/java/com/google/zxing/integration/android/IntentIntegrator.java

@@ -0,0 +1,506 @@
+/*
+ * Copyright 2009 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.zxing.integration.android;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Fragment;
+import android.content.ActivityNotFoundException;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.net.Uri;
+import android.os.Bundle;
+import android.util.Log;
+
+/**
+ * <p>A utility class which helps ease integration with Barcode Scanner via {@link Intent}s. This is a simple
+ * way to invoke barcode scanning and receive the result, without any need to integrate, modify, or learn the
+ * project's source code.</p>
+ *
+ * <h2>Initiating a barcode scan</h2>
+ *
+ * <p>To integrate, create an instance of {@code IntentIntegrator} and call {@link #initiateScan()} and wait
+ * for the result in your app.</p>
+ *
+ * <p>It does require that the Barcode Scanner (or work-alike) application is installed. The
+ * {@link #initiateScan()} method will prompt the user to download the application, if needed.</p>
+ *
+ * <p>There are a few steps to using this integration. First, your {@link Activity} must implement
+ * the method {@link Activity#onActivityResult(int, int, Intent)} and include a line of code like this:</p>
+ *
+ * <pre>{@code
+ * public void onActivityResult(int requestCode, int resultCode, Intent intent) {
+ *   IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
+ *   if (scanResult != null) {
+ *     // handle scan result
+ *   }
+ *   // else continue with any other code you need in the method
+ *   ...
+ * }
+ * }</pre>
+ *
+ * <p>This is where you will handle a scan result.</p>
+ *
+ * <p>Second, just call this in response to a user action somewhere to begin the scan process:</p>
+ *
+ * <pre>{@code
+ * IntentIntegrator integrator = new IntentIntegrator(yourActivity);
+ * integrator.initiateScan();
+ * }</pre>
+ *
+ * <p>Note that {@link #initiateScan()} returns an {@link AlertDialog} which is non-null if the
+ * user was prompted to download the application. This lets the calling app potentially manage the dialog.
+ * In particular, ideally, the app dismisses the dialog if it's still active in its {@link Activity#onPause()}
+ * method.</p>
+ * 
+ * <p>You can use {@link #setTitle(String)} to customize the title of this download prompt dialog (or, use
+ * {@link #setTitleByID(int)} to set the title by string resource ID.) Likewise, the prompt message, and
+ * yes/no button labels can be changed.</p>
+ *
+ * <p>Finally, you can use {@link #addExtra(String, Object)} to add more parameters to the Intent used
+ * to invoke the scanner. This can be used to set additional options not directly exposed by this
+ * simplified API.</p>
+ * 
+ * <p>By default, this will only allow applications that are known to respond to this intent correctly
+ * do so. The apps that are allowed to response can be set with {@link #setTargetApplications(List)}.
+ * For example, set to {@link #TARGET_BARCODE_SCANNER_ONLY} to only target the Barcode Scanner app itself.</p>
+ *
+ * <h2>Sharing text via barcode</h2>
+ *
+ * <p>To share text, encoded as a QR Code on-screen, similarly, see {@link #shareText(CharSequence)}.</p>
+ *
+ * <p>Some code, particularly download integration, was contributed from the Anobiit application.</p>
+ *
+ * <h2>Enabling experimental barcode formats</h2>
+ *
+ * <p>Some formats are not enabled by default even when scanning with {@link #ALL_CODE_TYPES}, such as
+ * PDF417. Use {@link #initiateScan(java.util.Collection)} with
+ * a collection containing the names of formats to scan for explicitly, like "PDF_417", to use such
+ * formats.</p>
+ *
+ * @author Sean Owen
+ * @author Fred Lin
+ * @author Isaac Potoczny-Jones
+ * @author Brad Drehmer
+ * @author gcstang
+ */
+public class IntentIntegrator {
+
+  public static final int REQUEST_CODE = 0x0000c0de; // Only use bottom 16 bits
+  private static final String TAG = IntentIntegrator.class.getSimpleName();
+
+  public static final String DEFAULT_TITLE = "Install Barcode Scanner?";
+  public static final String DEFAULT_MESSAGE =
+      "This application requires Barcode Scanner. Would you like to install it?";
+  public static final String DEFAULT_YES = "Yes";
+  public static final String DEFAULT_NO = "No";
+
+  private static final String BS_PACKAGE = "com.google.zxing.client.android";
+  private static final String BSPLUS_PACKAGE = "com.srowen.bs.android";
+
+  // supported barcode formats
+  public static final Collection<String> PRODUCT_CODE_TYPES = list("UPC_A", "UPC_E", "EAN_8", "EAN_13", "RSS_14");
+  public static final Collection<String> ONE_D_CODE_TYPES =
+      list("UPC_A", "UPC_E", "EAN_8", "EAN_13", "CODE_39", "CODE_93", "CODE_128",
+           "ITF", "RSS_14", "RSS_EXPANDED");
+  public static final Collection<String> QR_CODE_TYPES = Collections.singleton("QR_CODE");
+  public static final Collection<String> DATA_MATRIX_TYPES = Collections.singleton("DATA_MATRIX");
+
+  public static final Collection<String> ALL_CODE_TYPES = null;
+  
+  public static final List<String> TARGET_BARCODE_SCANNER_ONLY = Collections.singletonList(BS_PACKAGE);
+  public static final List<String> TARGET_ALL_KNOWN = list(
+          BSPLUS_PACKAGE,             // Barcode Scanner+
+          BSPLUS_PACKAGE + ".simple", // Barcode Scanner+ Simple
+          BS_PACKAGE                  // Barcode Scanner          
+          // What else supports this intent?
+      );
+  
+  private final Activity activity;
+  private final Fragment fragment;
+
+  private String title;
+  private String message;
+  private String buttonYes;
+  private String buttonNo;
+  private List<String> targetApplications;
+  private final Map<String,Object> moreExtras = new HashMap<>(3);
+
+  /**
+   * @param activity {@link Activity} invoking the integration
+   */
+  public IntentIntegrator(Activity activity) {
+    this.activity = activity;
+    this.fragment = null;
+    initializeConfiguration();
+  }
+
+  /**
+   * @param fragment {@link Fragment} invoking the integration.
+   *  {@link #startActivityForResult(Intent, int)} will be called on the {@link Fragment} instead
+   *  of an {@link Activity}
+   */
+  public IntentIntegrator(Fragment fragment) {
+    this.activity = fragment.getActivity();
+    this.fragment = fragment;
+    initializeConfiguration();
+  }
+
+  private void initializeConfiguration() {
+    title = DEFAULT_TITLE;
+    message = DEFAULT_MESSAGE;
+    buttonYes = DEFAULT_YES;
+    buttonNo = DEFAULT_NO;
+    targetApplications = TARGET_ALL_KNOWN;
+  }
+  
+  public String getTitle() {
+    return title;
+  }
+  
+  public void setTitle(String title) {
+    this.title = title;
+  }
+
+  public void setTitleByID(int titleID) {
+    title = activity.getString(titleID);
+  }
+
+  public String getMessage() {
+    return message;
+  }
+
+  public void setMessage(String message) {
+    this.message = message;
+  }
+
+  public void setMessageByID(int messageID) {
+    message = activity.getString(messageID);
+  }
+
+  public String getButtonYes() {
+    return buttonYes;
+  }
+
+  public void setButtonYes(String buttonYes) {
+    this.buttonYes = buttonYes;
+  }
+
+  public void setButtonYesByID(int buttonYesID) {
+    buttonYes = activity.getString(buttonYesID);
+  }
+
+  public String getButtonNo() {
+    return buttonNo;
+  }
+
+  public void setButtonNo(String buttonNo) {
+    this.buttonNo = buttonNo;
+  }
+
+  public void setButtonNoByID(int buttonNoID) {
+    buttonNo = activity.getString(buttonNoID);
+  }
+  
+  public Collection<String> getTargetApplications() {
+    return targetApplications;
+  }
+  
+  public final void setTargetApplications(List<String> targetApplications) {
+    if (targetApplications.isEmpty()) {
+      throw new IllegalArgumentException("No target applications");
+    }
+    this.targetApplications = targetApplications;
+  }
+  
+  public void setSingleTargetApplication(String targetApplication) {
+    this.targetApplications = Collections.singletonList(targetApplication);
+  }
+
+  public Map<String,?> getMoreExtras() {
+    return moreExtras;
+  }
+
+  public final void addExtra(String key, Object value) {
+    moreExtras.put(key, value);
+  }
+
+  /**
+   * Initiates a scan for all known barcode types with the default camera.
+   *
+   * @return the {@link AlertDialog} that was shown to the user prompting them to download the app
+   *   if a prompt was needed, or null otherwise.
+   */
+  public final AlertDialog initiateScan() {
+    return initiateScan(ALL_CODE_TYPES, -1);
+  }
+  
+  /**
+   * Initiates a scan for all known barcode types with the specified camera.
+   *
+   * @param cameraId camera ID of the camera to use. A negative value means "no preference".
+   * @return the {@link AlertDialog} that was shown to the user prompting them to download the app
+   *   if a prompt was needed, or null otherwise.
+   */
+  public final AlertDialog initiateScan(int cameraId) {
+    return initiateScan(ALL_CODE_TYPES, cameraId);
+  }
+
+  /**
+   * Initiates a scan, using the default camera, only for a certain set of barcode types, given as strings corresponding
+   * to their names in ZXing's {@code BarcodeFormat} class like "UPC_A". You can supply constants
+   * like {@link #PRODUCT_CODE_TYPES} for example.
+   *
+   * @param desiredBarcodeFormats names of {@code BarcodeFormat}s to scan for
+   * @return the {@link AlertDialog} that was shown to the user prompting them to download the app
+   *   if a prompt was needed, or null otherwise.
+   */
+  public final AlertDialog initiateScan(Collection<String> desiredBarcodeFormats) {
+    return initiateScan(desiredBarcodeFormats, -1);
+  }
+  
+  /**
+   * Initiates a scan, using the specified camera, only for a certain set of barcode types, given as strings corresponding
+   * to their names in ZXing's {@code BarcodeFormat} class like "UPC_A". You can supply constants
+   * like {@link #PRODUCT_CODE_TYPES} for example.
+   *
+   * @param desiredBarcodeFormats names of {@code BarcodeFormat}s to scan for
+   * @param cameraId camera ID of the camera to use. A negative value means "no preference".
+   * @return the {@link AlertDialog} that was shown to the user prompting them to download the app
+   *   if a prompt was needed, or null otherwise
+   */
+  public final AlertDialog initiateScan(Collection<String> desiredBarcodeFormats, int cameraId) {
+    Intent intentScan = new Intent(BS_PACKAGE + ".SCAN");
+    intentScan.addCategory(Intent.CATEGORY_DEFAULT);
+
+    // check which types of codes to scan for
+    if (desiredBarcodeFormats != null) {
+      // set the desired barcode types
+      StringBuilder joinedByComma = new StringBuilder();
+      for (String format : desiredBarcodeFormats) {
+        if (joinedByComma.length() > 0) {
+          joinedByComma.append(',');
+        }
+        joinedByComma.append(format);
+      }
+      intentScan.putExtra("SCAN_FORMATS", joinedByComma.toString());
+    }
+
+    // check requested camera ID
+    if (cameraId >= 0) {
+      intentScan.putExtra("SCAN_CAMERA_ID", cameraId);
+    }
+
+    String targetAppPackage = findTargetAppPackage(intentScan);
+    if (targetAppPackage == null) {
+      return showDownloadDialog();
+    }
+    intentScan.setPackage(targetAppPackage);
+    intentScan.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+    intentScan.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
+    attachMoreExtras(intentScan);
+    startActivityForResult(intentScan, REQUEST_CODE);
+    return null;
+  }
+
+  /**
+   * Start an activity. This method is defined to allow different methods of activity starting for
+   * newer versions of Android and for compatibility library.
+   *
+   * @param intent Intent to start.
+   * @param code Request code for the activity
+   * @see android.app.Activity#startActivityForResult(Intent, int)
+   * @see android.app.Fragment#startActivityForResult(Intent, int)
+   */
+  protected void startActivityForResult(Intent intent, int code) {
+    if (fragment == null) {
+      activity.startActivityForResult(intent, code);
+    } else {
+      fragment.startActivityForResult(intent, code);
+    }
+  }
+  
+  private String findTargetAppPackage(Intent intent) {
+    PackageManager pm = activity.getPackageManager();
+    List<ResolveInfo> availableApps = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
+    if (availableApps != null) {
+      for (String targetApp : targetApplications) {
+        if (contains(availableApps, targetApp)) {
+          return targetApp;
+        }
+      }
+    }
+    return null;
+  }
+  
+  private static boolean contains(Iterable<ResolveInfo> availableApps, String targetApp) {
+    for (ResolveInfo availableApp : availableApps) {
+      String packageName = availableApp.activityInfo.packageName;
+      if (targetApp.equals(packageName)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  private AlertDialog showDownloadDialog() {
+    AlertDialog.Builder downloadDialog = new AlertDialog.Builder(activity);
+    downloadDialog.setTitle(title);
+    downloadDialog.setMessage(message);
+    downloadDialog.setPositiveButton(buttonYes, new DialogInterface.OnClickListener() {
+      @Override
+      public void onClick(DialogInterface dialogInterface, int i) {
+        String packageName;
+        if (targetApplications.contains(BS_PACKAGE)) {
+          // Prefer to suggest download of BS if it's anywhere in the list
+          packageName = BS_PACKAGE;
+        } else {
+          // Otherwise, first option:
+          packageName = targetApplications.get(0);
+        }
+        Uri uri = Uri.parse("market://details?id=" + packageName);
+        Intent intent = new Intent(Intent.ACTION_VIEW, uri);
+        try {
+          if (fragment == null) {
+            activity.startActivity(intent);
+          } else {
+            fragment.startActivity(intent);
+          }
+        } catch (ActivityNotFoundException anfe) {
+          // Hmm, market is not installed
+          Log.w(TAG, "Google Play is not installed; cannot install " + packageName);
+        }
+      }
+    });
+    downloadDialog.setNegativeButton(buttonNo, null);
+    downloadDialog.setCancelable(true);
+    return downloadDialog.show();
+  }
+
+
+  /**
+   * <p>Call this from your {@link Activity}'s
+   * {@link Activity#onActivityResult(int, int, Intent)} method.</p>
+   *
+   * @param requestCode request code from {@code onActivityResult()}
+   * @param resultCode result code from {@code onActivityResult()}
+   * @param intent {@link Intent} from {@code onActivityResult()}
+   * @return null if the event handled here was not related to this class, or
+   *  else an {@link IntentResult} containing the result of the scan. If the user cancelled scanning,
+   *  the fields will be null.
+   */
+  public static IntentResult parseActivityResult(int requestCode, int resultCode, Intent intent) {
+    if (requestCode == REQUEST_CODE) {
+      if (resultCode == Activity.RESULT_OK) {
+        String contents = intent.getStringExtra("SCAN_RESULT");
+        String formatName = intent.getStringExtra("SCAN_RESULT_FORMAT");
+        byte[] rawBytes = intent.getByteArrayExtra("SCAN_RESULT_BYTES");
+        int intentOrientation = intent.getIntExtra("SCAN_RESULT_ORIENTATION", Integer.MIN_VALUE);
+        Integer orientation = intentOrientation == Integer.MIN_VALUE ? null : intentOrientation;
+        String errorCorrectionLevel = intent.getStringExtra("SCAN_RESULT_ERROR_CORRECTION_LEVEL");
+        return new IntentResult(contents,
+                                formatName,
+                                rawBytes,
+                                orientation,
+                                errorCorrectionLevel);
+      }
+      return new IntentResult();
+    }
+    return null;
+  }
+
+
+  /**
+   * Defaults to name "TEXT_TYPE".
+   *
+   * @param text the text string to encode as a barcode
+   * @return the {@link AlertDialog} that was shown to the user prompting them to download the app
+   *   if a prompt was needed, or null otherwise
+   * @see #shareText(CharSequence, CharSequence)
+   */
+  public final AlertDialog shareText(CharSequence text) {
+    return shareText(text, "TEXT_TYPE");
+  }
+
+  /**
+   * Shares the given text by encoding it as a barcode, such that another user can
+   * scan the text off the screen of the device.
+   *
+   * @param text the text string to encode as a barcode
+   * @param type name of data to encode. See {@code com.google.zxing.client.android.Contents.Type} constants.
+   * @return the {@link AlertDialog} that was shown to the user prompting them to download the app
+   *   if a prompt was needed, or null otherwise
+   */
+  public final AlertDialog shareText(CharSequence text, CharSequence type) {
+    Intent intent = new Intent();
+    intent.addCategory(Intent.CATEGORY_DEFAULT);
+    intent.setAction(BS_PACKAGE + ".ENCODE");
+    intent.putExtra("ENCODE_TYPE", type);
+    intent.putExtra("ENCODE_DATA", text);
+    String targetAppPackage = findTargetAppPackage(intent);
+    if (targetAppPackage == null) {
+      return showDownloadDialog();
+    }
+    intent.setPackage(targetAppPackage);
+    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
+    attachMoreExtras(intent);
+    if (fragment == null) {
+      activity.startActivity(intent);
+    } else {
+      fragment.startActivity(intent);
+    }
+    return null;
+  }
+  
+  private static List<String> list(String... values) {
+    return Collections.unmodifiableList(Arrays.asList(values));
+  }
+
+  private void attachMoreExtras(Intent intent) {
+    for (Map.Entry<String,Object> entry : moreExtras.entrySet()) {
+      String key = entry.getKey();
+      Object value = entry.getValue();
+      // Kind of hacky
+      if (value instanceof Integer) {
+        intent.putExtra(key, (Integer) value);
+      } else if (value instanceof Long) {
+        intent.putExtra(key, (Long) value);
+      } else if (value instanceof Boolean) {
+        intent.putExtra(key, (Boolean) value);
+      } else if (value instanceof Double) {
+        intent.putExtra(key, (Double) value);
+      } else if (value instanceof Float) {
+        intent.putExtra(key, (Float) value);
+      } else if (value instanceof Bundle) {
+        intent.putExtra(key, (Bundle) value);
+      } else {
+        intent.putExtra(key, value.toString());
+      }
+    }
+  }
+
+}

app/src/main/java/com/google/zxing/integration/android/IntentResult.java

@@ -0,0 +1,89 @@
+/*
+ * Copyright 2009 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.zxing.integration.android;
+
+/**
+ * <p>Encapsulates the result of a barcode scan invoked through {@link IntentIntegrator}.</p>
+ *
+ * @author Sean Owen
+ */
+public final class IntentResult {
+
+  private final String contents;
+  private final String formatName;
+  private final byte[] rawBytes;
+  private final Integer orientation;
+  private final String errorCorrectionLevel;
+
+  IntentResult() {
+    this(null, null, null, null, null);
+  }
+
+  IntentResult(String contents,
+               String formatName,
+               byte[] rawBytes,
+               Integer orientation,
+               String errorCorrectionLevel) {
+    this.contents = contents;
+    this.formatName = formatName;
+    this.rawBytes = rawBytes;
+    this.orientation = orientation;
+    this.errorCorrectionLevel = errorCorrectionLevel;
+  }
+
+  /**
+   * @return raw content of barcode
+   */
+  public String getContents() {
+    return contents;
+  }
+
+  /**
+   * @return name of format, like "QR_CODE", "UPC_A". See {@code BarcodeFormat} for more format names.
+   */
+  public String getFormatName() {
+    return formatName;
+  }
+
+  /**
+   * @return raw bytes of the barcode content, if applicable, or null otherwise
+   */
+  public byte[] getRawBytes() {
+    return rawBytes;
+  }
+
+  /**
+   * @return rotation of the image, in degrees, which resulted in a successful scan. May be null.
+   */
+  public Integer getOrientation() {
+    return orientation;
+  }
+
+  /**
+   * @return name of the error correction level used in the barcode, if applicable
+   */
+  public String getErrorCorrectionLevel() {
+    return errorCorrectionLevel;
+  }
+  
+  @Override
+  public String toString() {
+    int rawBytesLength = rawBytes == null ? 0 : rawBytes.length;
+    return "Format: "+formatName+'\n'+"Contents: "+contents+'\n'+"Raw bytes: ("+rawBytesLength+" bytes)\n"+"Orientation: "+orientation+'\n'+"EC level: "+errorCorrectionLevel+'\n';
+  }
+
+}

app/src/main/java/de/vanitasvitae/enigmandroid/Enigma.java

@@ -1,233 +0,0 @@
-package de.vanitasvitae.enigmandroid;
-
-
-import de.vanitasvitae.enigmandroid.rotors.Reflector;
-import de.vanitasvitae.enigmandroid.rotors.Rotor;
-
-/**
- * Enigma-machine
- *Copyright (C) 2015  Paul Schaub
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- * @author vanitasvitae
- */
-public class Enigma
-{
-    private Plugboard plugboard;
-
-    //Slots for the rotors
-    private Rotor r1;
-    private Rotor r2;
-    private Rotor r3;
-
-    //Slot for the reflector
-    private Reflector reflector;
-
-    private boolean doAnomaly = false;
-
-    private boolean prefAnomaly;  //Do you want to simulate the anomaly?
-
-    /**
-     * Create new Enigma with standard configuration.
-     * Empty Plugboard, rotors I,II,III, Positions 0,0,0
-     */
-    public Enigma()
-    {
-        initialize();
-    }
-
-    private void initialize()
-    {
-        this.r1 = Rotor.createRotorI(0, 0);
-        this.r2 = Rotor.createRotorII(0, 0);
-        this.r3 = Rotor.createRotorIII(0, 0);
-        this.reflector = Reflector.createReflectorB();
-        plugboard = new Plugboard();
-        prefAnomaly = true;
-    }
-
-    /**
-     * Encrypt / Decrypt a given String
-     *
-     * @param w Text to decrypt/encrypt
-     * @return encrypted/decrypted string
-     */
-    public String encrypt(String w)
-    {
-        //output string
-        String output = "";
-        //for each char x in k
-        for (char x : w.toCharArray())
-        {
-            output = output + this.encryptChar(x);
-        }
-        //return en-/decrypted string
-        return output;
-    }
-
-    /**
-     * Perform crypto on char.
-     * Beforehand rotate rotors. Also implement the rotor anomaly.
-     *
-     * @param k input char
-     * @return output char
-     */
-    public char encryptChar(char k)
-    {
-        //Rotate rotors
-        r1.rotate();
-        if (r1.isAtTurnoverPosition() || (this.doAnomaly && prefAnomaly))
-        {
-            r2.rotate();
-            //Handle Anomaly
-            this.doAnomaly = r2.doubleTurnAnomaly();
-            if (r2.isAtTurnoverPosition())
-            {
-                r3.rotate();
-            }
-        }
-        int x = (int) k;
-        x = x - 65;    //Remove Unicode Offset (A=65 in Unicode.)
-
-        //Encryption
-        //forward direction
-        x = plugboard.encrypt(x);
-        x = normalize(x + r1.getRotation());
-        x = r1.encryptForward(x);
-        x = normalize(x + r2.getRotation() - r1.getRotation());
-        x = r2.encryptForward(x);
-        x = normalize(x + r3.getRotation() - r2.getRotation());
-        x = r3.encryptForward(x);
-        x = normalize(x - r3.getRotation());
-        //backward direction
-        x = reflector.encrypt(x);
-        x = normalize(x + r3.getRotation());
-        x = r3.encryptBackward(x);
-        x = normalize(x - r3.getRotation() + r2.getRotation());
-        x = r2.encryptBackward(x);
-        x = normalize(x - r2.getRotation() + r1.getRotation());
-        x = r1.encryptBackward(x);
-        x = normalize(x - r1.getRotation());
-        x = plugboard.encrypt(x);
-
-        return (char) (x + 65);     //Add Offset
-    }
-
-    public int normalize(int input)
-    {
-        return (26+input)%26;
-    }
-
-    /**
-     * Prepare String for encryption via enigma
-     * Replace . , ! ? : with X
-     * Remove all other chars that are not A..Z
-     *
-     * @param word string
-     * @return prepared string
-     */
-    public static String prepare(String word)
-    {
-        String input = word.toUpperCase();
-        String output = "";
-        for (char x : input.toCharArray())
-        {
-            if (x >= 65 && x <= 90)  //If x in [A..Z]
-            {
-                output = output + x;      //Append to String
-            }
-            //if x is special symbol
-            else
-            {
-                if (x == '.' || x == ',' || x == '!' || x == '?' || x == ':')
-                {
-                    //replace x with X and encrypt
-                    output = output + 'X';
-                }
-            }
-        }
-        return output;
-    }
-
-    /**
-     * Set config of the enigma
-     *
-     * @param conf configuration
-     */
-    public void setConfiguration(int[] conf)
-    {
-        if (conf == null || conf.length != 10)
-        {
-            initialize();
-        }
-        else
-        {
-            int ro1 = conf[0];
-            int ro2 = conf[1];
-            int ro3 = conf[2];
-            int ref = conf[3];
-            int ro1rot = normalize(conf[4] - 1);
-            int ro2rot = normalize(conf[5] - 1);
-            int ro3rot = normalize(conf[6] - 1);
-            int ro1Ring = conf[7];
-            int ro2Ring = conf[8];
-            int ro3Ring = conf[9];
-
-            //Set rotors
-            r1 = Rotor.createRotor(ro1, ro1Ring, ro1rot);
-            r2 = Rotor.createRotor(ro2, ro2Ring, ro2rot);
-            r3 = Rotor.createRotor(ro3, ro3Ring, ro3rot);
-
-            //Set reflector
-            reflector = Reflector.createReflector(ref);
-
-            //catch double turn anomaly on step by step basis
-            this.doAnomaly = r2.doubleTurnAnomaly();
-        }
-    }
-
-    public void setPlugboard(Plugboard p)
-    {
-        this.plugboard = p;
-    }
-
-    /**
-     * Return the configuration, the enigma machine is in right NOW
-     *
-     * @return array containing configuration
-     */
-    public int[] getConfiguration()
-    {
-        int[] configuration = new int[10];
-        {
-            configuration[0] = r1.getType();
-            configuration[1] = r2.getType();
-            configuration[2] = r3.getType();
-            configuration[3] = reflector.getType();
-            configuration[4] = r1.getRotation();
-            configuration[5] = r2.getRotation();
-            configuration[6] = r3.getRotation();
-            configuration[7] = r1.getRingSetting();
-            configuration[8] = r2.getRingSetting();
-            configuration[9] = r3.getRingSetting();
-        }
-        return configuration;
-    }
-
-    public void setPrefAnomaly(boolean b)
-    {
-        this.prefAnomaly = b;
-    }
-}

app/src/main/java/de/vanitasvitae/enigmandroid/MainActivity.java

@@ -1,418 +1,509 @@
 /**
- * Copyright (C) 2015  Paul Schaub
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
 package de.vanitasvitae.enigmandroid;
 
 import android.app.Activity;
 import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.ClipData;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
-import android.view.View;
+import android.text.InputType;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.View;
+import android.widget.Button;
 import android.widget.EditText;
-import android.widget.Spinner;
-import android.widget.ArrayAdapter;
+import android.widget.LinearLayout;
+import android.widget.TextView;
 import android.widget.Toast;
 
+import com.google.zxing.integration.android.IntentIntegrator;
+import com.google.zxing.integration.android.IntentResult;
+
+import java.math.BigInteger;
+import java.security.SecureRandom;
+
+import de.vanitasvitae.enigmandroid.enigma.Enigma;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.inputPreparer.InputPreparer;
+import de.vanitasvitae.enigmandroid.layout.LayoutContainer;
+import de.vanitasvitae.enigmandroid.layout.PassphraseDialogBuilder;
+
 public class MainActivity extends Activity
 {
-    private Menu menu;
-    private Spinner rotor1;
-    private Spinner rotor2;
-    private Spinner rotor3;
-    private Spinner reflector;
-    private Spinner rotor1Position;
-    private Spinner rotor2Position;
-    private Spinner rotor3Position;
+	private static final int RESULT_SETTINGS = 1;
+	private static final String URI_CHANGELOG =
+			"https://github.com/vanitasvitae/EnigmAndroid/blob/master/CHANGELOG.txt";
+	public static final String APP_ID = "EnigmAndroid";
+	public static final int latest_protocol_version = 1;
+	public static final int max_protocol_version = 256;
 
-    private EditText plugboard;
-    private EditText input;
-    private EditText output;
+	private LayoutContainer layoutContainer;
 
-    private static final int RESULT_SETTINGS = 1;
-    private static final String URI_CHANGELOG = "https://github.com/vanitasvitae/EnigmAndroid/blob/master/CHANGELOG.txt";
+	private SecureRandom secureRandom;
 
-    private Enigma enigma;
-    //memory for the ringSettings
-    private int[] ringSettings = {0,0,0};
-    private boolean prefAnomaly;
+	@Override
+	public void onCreate(Bundle savedInstanceState)
+	{
+		super.onCreate(savedInstanceState);
+		secureRandom = new SecureRandom();
+		ActivitySingleton.getInstance().setActivity(this);
+		SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
+		SettingsActivity.SettingsSingleton.getInstance(prefs, getResources());
+		layoutContainer = LayoutContainer.createLayoutContainer();
 
-    @Override
-    public void onCreate(Bundle savedInstanceState)
-    {
-        super.onCreate(savedInstanceState);
-        this.setContentView(R.layout.activity_main);
-        this.initLayout();
-        this.prefAnomaly = PreferenceManager.getDefaultSharedPreferences(this).getBoolean("prefAnomaly", true);
-        this.resetLayout();
-        ActivitySingleton singleton = ActivitySingleton.getInstance();
-        singleton.setActivity(this);
+		//Handle shared text
+		Intent intent = getIntent();
+		String action = intent.getAction();
+		String type = intent.getType();
+		if (Intent.ACTION_SEND.equals(action) && type != null) {
+			if ("text/plain".equals(type))
+			{
+				String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
+				if (sharedText != null)
+				{
+					//If shared text consists of an encoded configuration, try to restore it
+					if(sharedText.startsWith(APP_ID+"/"))
+						restoreStateFromCode(sharedText);
+						//Else put it in the input text box
+					else
+						layoutContainer.getInput().setRawText(sharedText);
+				}
+			}
+		}
+	}
 
-        //Handle shared text
-        Intent intent = getIntent();
-        String action = intent.getAction();
-        String type = intent.getType();
+	public SecureRandom getSecureRandom()
+	{
+		return this.secureRandom;
+	}
 
-        if (Intent.ACTION_SEND.equals(action) && type != null) {
-            if ("text/plain".equals(type))
-            {
-                String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
-                if (sharedText != null)
-                {
-                    input.setText(sharedText);
-                }
-            }
-        }
-    }
+	public void onDialogFinished(EnigmaStateBundle state)
+	{
+		layoutContainer.getEnigma().setState(state);
+	}
 
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu)
-    {
-        this.menu = menu;
-        this.getMenuInflater().inflate(R.menu.main, menu);
-        return true;
-    }
+	@Override
+	public boolean onCreateOptionsMenu(Menu menu)
+	{
+		this.getMenuInflater().inflate(R.menu.main, menu);
+		return true;
+	}
 
-    @Override
-    /**
-     * Handle Options menu clicks
-     */
-    public boolean onOptionsItemSelected(MenuItem item)
-    {
-        int id = item.getItemId();
-        if (id == R.id.action_reset)
-        {
-            this.resetLayout();
-            Toast.makeText(getApplicationContext(), R.string.message_reset,
-                    Toast.LENGTH_SHORT).show();
-            return true;
-        }
-        else if (id == R.id.action_choose_ringstellung)
-        {
-            showRingsettingsDialog();
-            return true;
-        }
-        else if (id == R.id.action_settings)
-        {
-            Intent i = new Intent(this, SettingsActivity.class);
-            startActivityForResult(i, RESULT_SETTINGS);
-        }
-        else if (id == R.id.action_about)
-        {
-            showAboutDialog();
-            return true;
-        }
-        else if (id == R.id.action_send)
-        {
-            if(output.getText().length() == 0)
-            {
-                Toast.makeText(this, R.string.error_no_text_to_send, Toast.LENGTH_LONG).show();
-            }
-            else
-            {
-                Intent sendIntent = new Intent();
-                sendIntent.setAction(Intent.ACTION_SEND);
-                sendIntent.putExtra(Intent.EXTRA_TEXT, output.getText().toString());
-                sendIntent.setType("text/plain");
-                startActivity(Intent.createChooser(sendIntent, getResources().getText(R.string.send_to)));
-            }
-        }
-        return super.onOptionsItemSelected(item);
-    }
+	@Override
+	/**
+	 * Handle Options menu clicks
+	 */
+	public boolean onOptionsItemSelected(MenuItem item)
+	{
+		int id = item.getItemId();
+		if (id == R.id.action_reset)
+		{
+			layoutContainer.resetLayout();
+			Toast.makeText(getApplicationContext(), R.string.message_reset,
+					Toast.LENGTH_SHORT).show();
+			return true;
+		}
+		else if (id == R.id.action_send_message)
+		{
+			if(layoutContainer.getOutput().getText().length() == 0)
+			{
+				Toast.makeText(this, R.string.error_no_text_to_send, Toast.LENGTH_SHORT).show();
+			}
+			else
+			{
+				Intent sendIntent = new Intent();
+				sendIntent.setAction(Intent.ACTION_SEND);
+				sendIntent.putExtra(Intent.EXTRA_TEXT, layoutContainer.getOutput().getModifiedText());
+				sendIntent.setType("text/plain");
+				startActivity(Intent.createChooser(sendIntent, getResources().getText(R.string.send_to)));
+			}
+		}
+		else if (id == R.id.action_choose_ringsetting)
+		{
+			layoutContainer.showRingSettingsDialog();
+			return true;
+		}
+		else if(id == R.id.action_share_configuration)
+		{
+			showShareConfigurationDialog();
+		}
+		else if (id == R.id.action_restore_configuration)
+		{
+			showReceiveConfigurationDialog();
+			return true;
+		}
+		else if (id == R.id.action_random_configuration)
+		{
+			layoutContainer.getEnigma().randomState();
+			layoutContainer.syncStateFromEnigmaToLayout();
+			Toast.makeText(getApplicationContext(), R.string.message_random,
+					Toast.LENGTH_SHORT).show();
+			layoutContainer.getOutput().setText("");
+			return true;
+		}
+		else if (id == R.id.action_settings)
+		{
+			Intent i = new Intent(this, SettingsActivity.class);
+			startActivityForResult(i, RESULT_SETTINGS);
+		}
+		else if (id == R.id.action_about)
+		{
+			showAboutDialog();
+			return true;
+		}
+		return super.onOptionsItemSelected(item);
+	}
 
-    /**
-     * Updates the enigma to the chosen rotors and plugboard
-     *
-     * @param v View
-     */
-    public void updateEnigma(View v)
-    {
-        int[] conf = new int[10];
-        conf[0] = rotor1.getSelectedItemPosition() + 1;
-        conf[1] = rotor2.getSelectedItemPosition() + 1;
-        conf[2] = rotor3.getSelectedItemPosition() + 1;
-        conf[3] = reflector.getSelectedItemPosition() + 1;
-        conf[4] = rotor1Position.getSelectedItemPosition() + 1;
-        conf[5] = rotor2Position.getSelectedItemPosition() + 1;
-        conf[6] = rotor3Position.getSelectedItemPosition() + 1;
-        conf[7] = ringSettings[0];
-        conf[8] = ringSettings[1];
-        conf[9] = ringSettings[2];
+	/**
+	 * Set the chosen Configuration to the enigma, get the input string from the input text box and
+	 * prepare it, set the input to the prepared text, encrypt the prepared input and set the
+	 * encrypted string to the output text box and update the spinners to their new positions.
+	 * @param v View
+	 */
+	public void doCrypto(View v)
+	{
+		layoutContainer.doCrypto();
+	}
 
-        enigma = new Enigma();
+	/**
+	 * Start an intent to share the configuration as QR-Code via Barcode Scanner
+	 */
+	private void shareConfigurationAsQR()
+	{
+		IntentIntegrator QRIntegrator = new IntentIntegrator(this);
+		layoutContainer.syncStateFromLayoutToEnigma();
+		String encoded_state = APP_ID+"/"+layoutContainer.getEnigma().getEncodedState().toString(16);
+		Log.d(APP_ID, "Sharing configuration to QR: "+encoded_state);
+		QRIntegrator.shareText(encoded_state);
+	}
 
-        int[][] plugboardConfiguration = null;
-        plugboard.setText(plugboard.getText().toString().toUpperCase());
-        plugboardConfiguration = Plugboard.parseConfigurationString(plugboard.getText().toString());
-        enigma.setConfiguration(conf);
-        enigma.setPlugboard(new Plugboard(plugboardConfiguration));
-        enigma.setPrefAnomaly(prefAnomaly);
-    }
+	/**
+	 * Start an intent to share the configuration as text
+	 */
+	private void shareConfigurationAsText()
+	{
+		Intent sendIntent = new Intent();
+		sendIntent.setAction(Intent.ACTION_SEND);
+		sendIntent.putExtra(Intent.EXTRA_TEXT,
+				APP_ID+"/"+layoutContainer.getEnigma().getEncodedState().toString(16));
+		sendIntent.setType("text/plain");
+		startActivity(Intent.createChooser(sendIntent, getResources().getText(R.string.send_to)));
+	}
 
-    /**
-     * Set the chosen Configuration to the enigma, get the input string from the input textbox and
-     * prepare it, set the input to the prepared text, encrypt the prepared input and set the
-     * encrypted string to the output textbox and update the spinners to their new positions.
-     * @param v View
-     */
-    public void doCrypto(View v)
-    {
-        if(input.getText().length()!=0) {
-            updateEnigma(null);
-            String m = input.getText().toString();
-            m = Enigma.prepare(m);
-            input.setText(m);
-            output.setText(enigma.encrypt(m));
-            updateSpinner(enigma.getConfiguration());
-        }
-    }
+	/**
+	 * Start the barcode app to scan a barcode for configuration
+	 */
+	private void receiveConfigurationQR()
+	{
+		IntentIntegrator integrator = new IntentIntegrator(this);
+		integrator.initiateScan();
+	}
 
+	/**
+	 * Show a dialog to restore a configuration
+	 */
+	private void receiveConfigurationText()
+	{
+		new PassphraseDialogBuilder().showDialog();
+	}
 
-    /**
-     * Reset all the spinners and textboxes and the ringsettings memory
-     */
-    private void resetLayout()
-    {
-        rotor1.setSelection(0);
-        rotor2.setSelection(1);
-        rotor3.setSelection(2);
-        reflector.setSelection(1);
-        rotor1Position.setSelection(0);
-        rotor2Position.setSelection(0);
-        rotor3Position.setSelection(0);
-        ringSettings = new int[]{0,0,0};
-        plugboard.setText("");
-        input.setText("");
-        output.setText("");
-    }
+	/**
+	 * Show a Dialog containing information about the app, license, usage, author and a link
+	 * to the changelog
+	 */
+	private void showAboutDialog()
+	{
+		final View aboutView = View.inflate(this, R.layout.dialog_about, null);
+		//Get and set Version code
+		PackageInfo pInfo = null;
+		try{ pInfo = getPackageManager().getPackageInfo(this.getPackageName(), 0);}
+		catch (PackageManager.NameNotFoundException e){ e.printStackTrace();}
+		assert pInfo != null;
+		String version = pInfo.versionName+ " ("+pInfo.versionCode+")";
+		TextView versionText = (TextView) aboutView.findViewById(R.id.about_version_section);
+		versionText.setText(version);
 
-    /**
-     * Initialize the Layout
-     */
-    private void initLayout()
-    {
-        Character[] charArray = new Character[26];
-        for(int i=0; i<26; i++) {charArray[i] = (char) (65+i);}
+		//Build and show dialog
+		AlertDialog.Builder builder = new AlertDialog.Builder(this);
+		builder.setTitle(R.string.title_about_dialog);
+		builder.setView(aboutView)
+				.setCancelable(true)
+				.setPositiveButton(R.string.dialog_positive, new DialogInterface.OnClickListener()
+				{
+					public void onClick(DialogInterface dialog, int id)
+					{
+						dialog.dismiss();
+					}
+				})
+				.setNegativeButton(R.string.button_show_changelog, new DialogInterface.OnClickListener()
+				{
+					public void onClick(DialogInterface dialog, int id)
+					{
+						dialog.cancel();
+						openWebPage(URI_CHANGELOG);
+					}
+				}).show();
+	}
 
-        rotor1 = (Spinner) findViewById(R.id.rotor1);
-        ArrayAdapter<CharSequence> rotor1Adapter = ArrayAdapter.createFromResource(this,
-                R.array.enigma_rotors, android.R.layout.simple_spinner_item);
-        rotor1Adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        rotor1.setAdapter(rotor1Adapter);
+	/**
+	 * Show a dialog where the user can choose between sharing the configuration via QR-code or
+	 * via string (intent or copy-to-clipboard)
+	 */
+	private void showShareConfigurationDialog()
+	{
+		final String configuration = APP_ID+"/"+layoutContainer.getEnigma().getEncodedState().toString(16);
+		final View shareView = View.inflate(this, R.layout.dialog_two_options, null);
+		LinearLayout l = (LinearLayout) shareView.findViewById(R.id.dialog_two_options_lay);
+		EditText e = new EditText(this);
+		e.setText(configuration);
+		e.setInputType(InputType.TYPE_NULL);
+		e.setOnClickListener(new View.OnClickListener()
+		{
+			@Override
+			public void onClick(View v)
+			{
+				if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB){
+					android.content.ClipboardManager clipboard =  (android.content.ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
+					ClipData clip;
+					clip = ClipData.newPlainText("label", configuration);
+					clipboard.setPrimaryClip(clip);
+				} else{
+					@SuppressWarnings("deprecation")
+					android.text.ClipboardManager clipboard = (android.text.ClipboardManager)getSystemService(CLIPBOARD_SERVICE);
+					clipboard.setText(configuration);
+				}
+				Toast.makeText(getApplicationContext(), R.string.message_clipboard, Toast.LENGTH_SHORT).show();
+			}
+		});
+		l.addView(e);
+		AlertDialog.Builder builder = new AlertDialog.Builder(this);
+		builder.setTitle(R.string.dialog_title_share_configuration)
+				.setView(shareView).setCancelable(true);
+		final Dialog d = builder.create();
+		Button one = (Button) shareView.findViewById(R.id.dialog_two_options_1);
+		one.setText(R.string.dialog_share_qr);
+		one.setOnClickListener(new View.OnClickListener()
+		{
+			@Override
+			public void onClick(View v)
+			{
+				shareConfigurationAsQR();
+				d.dismiss();
+			}
+		});
+		Button two = (Button) shareView.findViewById(R.id.dialog_two_options_2);
+		two.setText(R.string.dialog_share_code);
+		two.setOnClickListener(new View.OnClickListener()
+		{
+			@Override
+			public void onClick(View v)
+			{
+				shareConfigurationAsText();
+				d.dismiss();
+			}
+		});
+		d.show();
+	}
 
+	/**
+	 * Show a dialog, where the user can choose between scanning QR-code and entering a string to
+	 * restore the encoded configuration
+	 */
+	private void showReceiveConfigurationDialog()
+	{
+		final View shareView = View.inflate(this, R.layout.dialog_two_options, null);
+		AlertDialog.Builder builder = new AlertDialog.Builder(this);
+		builder.setTitle(R.string.dialog_title_restore_configuration)
+				.setView(shareView).setCancelable(true);
+		final Dialog d = builder.create();
+		Button one = (Button) shareView.findViewById(R.id.dialog_two_options_1);
+		one.setText(R.string.dialog_restore_qr);
+		one.setOnClickListener(new View.OnClickListener()
+		{
+			@Override
+			public void onClick(View v)
+			{
+				receiveConfigurationQR();
+				d.dismiss();
+			}
+		});
+		Button two = (Button) shareView.findViewById(R.id.dialog_two_options_2);
+		two.setText(R.string.dialog_restore_code);
+		two.setOnClickListener(new View.OnClickListener()
+		{
+			@Override
+			public void onClick(View v)
+			{
+				receiveConfigurationText();
+				d.dismiss();
+			}
+		});
+		d.show();
+	}
 
-        rotor2 = (Spinner) findViewById(R.id.rotor2);
-        ArrayAdapter<CharSequence> rotor2Adapter = ArrayAdapter.createFromResource(this,
-                R.array.enigma_rotors, android.R.layout.simple_spinner_item);
-        rotor2Adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        rotor2.setAdapter(rotor2Adapter);
+	/**
+	 * Handle Activity Results
+	 * @param requestCode requestCode
+	 * @param resultCode resultCode (RESULT_SETTINGS is defined at the top)
+	 * @param data data
+	 */
+	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+		super.onActivityResult(requestCode, resultCode, data);
+		switch (requestCode) {
+			//Come back from Settings
+			case RESULT_SETTINGS:
+			{
+				applyPreferenceChanges();
+				break;
+			}
+			// Receive from QR
+			case IntentIntegrator.REQUEST_CODE:
+				IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
+				if (scanResult != null) {
+					String content = scanResult.getContents();
+					if(content == null) Log.e(APP_ID, "Error! Received nothing from QR-Code!");
+					else {
+						Log.d(APP_ID, "Received " + content + " from QR-Code!");
+						restoreStateFromCode(content);
+					}
+				}
+		}
+	}
 
-        rotor3 = (Spinner) findViewById(R.id.rotor3);
-        ArrayAdapter<CharSequence> rotor3Adapter = ArrayAdapter.createFromResource(this,
-                R.array.enigma_rotors, android.R.layout.simple_spinner_item);
-        rotor3Adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        rotor3.setAdapter(rotor3Adapter);
+	/**
+	 * Handle changes in preferences and apply those changes to the app
+	 */
+	private void applyPreferenceChanges()
+	{
+		SettingsActivity s = SettingsActivity.SettingsSingleton.getInstance();
+		if(s.prefMachineTypeChanged())
+		{
+			layoutContainer = LayoutContainer.createLayoutContainer();
+		}
+		if(s.prefMessageFormattingChanged())
+		{
+			layoutContainer.setEditTextAdapter(s.getPrefMessageFormatting());
+		}
+		if(s.prefNumericLanguageChanged())
+		{
+			layoutContainer.setInputPreparer(InputPreparer.createInputPreparer());
+		}
+	}
 
-        reflector = (Spinner) findViewById(R.id.reflector);
-        ArrayAdapter<CharSequence> relfectorAdapter = ArrayAdapter.createFromResource(this,
-                R.array.enigma_reflectors, android.R.layout.simple_spinner_item);
-        relfectorAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        reflector.setAdapter(relfectorAdapter);
+	/**
+	 * Set EnigmAndroid into a certain state as described in the QR-Code
+	 * @param mem content of the QR-Code
+	 */
+	public void restoreStateFromCode(String mem)
+	{
+		if(!mem.startsWith(APP_ID+"/"))
+		{
+			Toast.makeText(this, R.string.error_no_valid_qr, Toast.LENGTH_LONG).show();
+		}
+		else
+		{
+			String inputString = layoutContainer.getInput().getText();
+			mem = mem.substring((APP_ID+"/").length());
+			BigInteger s = new BigInteger(mem, 16);
+			int protocol_version = Enigma.getValue(s, max_protocol_version);
+			s = Enigma.removeDigit(s, max_protocol_version);
+			Log.d(APP_ID,
+					"Try to restore configuration from BigInteger value "+s.toString()+" in protocol version "+protocol_version+".");
+			SettingsActivity.SettingsSingleton.getInstance()
+					.setPrefMachineType(Enigma.chooseEnigmaFromSave(s));
+			layoutContainer = LayoutContainer.createLayoutContainer();
+			layoutContainer.getEnigma().restoreState(Enigma.removeDigit(s,20), protocol_version);
+			layoutContainer.setInputPreparer(InputPreparer.createInputPreparer());
+			layoutContainer.syncStateFromEnigmaToLayout();
+			layoutContainer.getInput().setText(inputString);
+			layoutContainer.getOutput().setText("");
+		}
+	}
 
-        rotor1Position = (Spinner) findViewById(R.id.rotor1position);
-        ArrayAdapter<Character> rotor1PositionAdapter = new ArrayAdapter<>(this.getApplicationContext(),
-                android.R.layout.simple_spinner_item,charArray);
-        rotor1PositionAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        rotor1Position.setAdapter(rotor1PositionAdapter);
+	/**
+	 * Set EnigmAndroid into a state calculated from the seed.
+	 * @param seed seed
+	 */
+	public void applyStateFromSeed(String seed)
+	{
+		String inputString = layoutContainer.getInput().getText();
+		SettingsActivity.SettingsSingleton.getInstance()
+				.setPrefMachineType(Enigma.chooseEnigmaFromSeed(seed));
+		layoutContainer = LayoutContainer.createLayoutContainer();
+		layoutContainer.getEnigma().setStateFromSeed(seed);
+		layoutContainer.setInputPreparer(InputPreparer.createInputPreparer());
+		layoutContainer.syncStateFromEnigmaToLayout();
+		layoutContainer.getInput().setText(inputString);
+		layoutContainer.getOutput().setText("");
+	}
 
-        rotor2Position = (Spinner) findViewById(R.id.rotor2position);
-        ArrayAdapter<Character> rotor2PositionAdapter = new ArrayAdapter<>(this.getApplicationContext(),
-                android.R.layout.simple_spinner_item,charArray);
-        rotor2PositionAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        rotor2Position.setAdapter(rotor2PositionAdapter);
+	/**
+	 * Open the web page with the URL url
+	 * @param url URL of the website
+	 */
+	private void openWebPage(String url) {
+		Uri webPage = Uri.parse(url);
+		Intent intent = new Intent(Intent.ACTION_VIEW, webPage);
+		if (intent.resolveActivity(getPackageManager()) != null) {
+			startActivity(intent);
+		}
+	}
 
-        rotor3Position = (Spinner) findViewById(R.id.rotor3position);
-        ArrayAdapter<Character> rotor3PositionAdapter = new ArrayAdapter<>(this.getApplicationContext(),
-                android.R.layout.simple_spinner_item,charArray);
-        rotor3PositionAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        rotor3Position.setAdapter(rotor3PositionAdapter);
+	/**
+	 * Singleton that grants access to an Activity from anywhere within the app
+	 */
+	public static class ActivitySingleton
+	{
+		private static ActivitySingleton instance = null;
+		private Activity activity;
 
-        plugboard = (EditText) findViewById(R.id.plugboard);
-        plugboard.setOnFocusChangeListener(new View.OnFocusChangeListener() {
-            @Override
-            public void onFocusChange(View v, boolean hasFocus) {
-                if(!hasFocus)
-                {
-                    plugboard.setText(plugboard.getText().toString().toUpperCase());
-                }
-            }
-        });
-        input = (EditText) findViewById(R.id.input);
-        output = (EditText) findViewById(R.id.output);
+		//private constructor
+		private ActivitySingleton(){}
+		//Singleton method
+		public static ActivitySingleton getInstance()
+		{
+			if(instance == null) instance = new ActivitySingleton();
+			return instance;
+		}
 
-        input.requestFocus();
-    }
+		/**
+		 * Set an Activity that the Singleton returns
+		 * @param activity activity that's stored
+		 */
+		public void setActivity(Activity activity)
+		{
+			this.activity = activity;
+		}
 
-    /**
-     * Update the Spinners to their new Positions
-     * @param c Configuration
-     */
-    public void updateSpinner(int[] c)
-    {
-        rotor1.setSelection(c[0] - 1);
-        rotor2.setSelection(c[1] - 1);
-        rotor3.setSelection(c[2] - 1);
-        rotor1Position.setSelection(c[4]);
-        rotor2Position.setSelection(c[5]);
-        rotor3Position.setSelection(c[6]);
-    }
+		/**
+		 * Returns the stored Activity
+		 * @return stored Activity
+		 */
+		public Activity getActivity()
+		{
+			return activity;
+		}
 
-    /**
-     * Show the dialog where the user can pick the ringsettings and set them if the user doesn't
-     * abort.
-     */
-    public void showRingsettingsDialog()
-    {
-        View ringsettingsView = View.inflate(this, R.layout.dialog_ringsettings, null);
-
-        Integer[] ringArray = new Integer[26];
-        for(int i=1; i<=26; i++) {ringArray[i-1] = i;}
-
-        final Spinner ring1 = (Spinner) ringsettingsView.findViewById(R.id.rotor1ring);
-        ArrayAdapter<Integer> ring1Adapter = new ArrayAdapter<>(this.getApplicationContext(),
-                android.R.layout.simple_spinner_item,ringArray);
-        ring1Adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        ring1.setAdapter(ring1Adapter);
-        ring1.setSelection(ringSettings[0]);
-
-        final Spinner ring2 = (Spinner) ringsettingsView.findViewById(R.id.rotor2ring);
-        ArrayAdapter<Integer> ring2Adapter = new ArrayAdapter<>(this.getApplicationContext(),
-                android.R.layout.simple_spinner_item,ringArray);
-        ring2Adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        ring2.setAdapter(ring2Adapter);
-        ring2.setSelection(ringSettings[1]);
-
-        final Spinner ring3 = (Spinner) ringsettingsView.findViewById(R.id.rotor3ring);
-        ArrayAdapter<Integer> ring3Adapter = new ArrayAdapter<>(this.getApplicationContext(),
-                android.R.layout.simple_spinner_item,ringArray);
-        ring3Adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        ring3.setAdapter(ring3Adapter);
-        ring3.setSelection(ringSettings[2]);
-
-        AlertDialog.Builder builder = new AlertDialog.Builder(this);
-        builder.setTitle(R.string.title_ringsetting);
-        builder.setView(ringsettingsView)
-                .setCancelable(true)
-                .setPositiveButton(R.string.dialog_positiv, new DialogInterface.OnClickListener()
-                {
-                    public void onClick(DialogInterface dialog, int id)
-                    {
-                        ringSettings = new int[]{ring1.getSelectedItemPosition(),
-                                ring2.getSelectedItemPosition(), ring3.getSelectedItemPosition()};
-                        String message = getResources().getString(R.string.dialog_ringsettings_success) + " " + (ringSettings[2]+1) + ", " +
-                                (ringSettings[1]+1) + ", " + (ringSettings[0]+1) + ".";
-                        Toast.makeText(getApplicationContext(), message,
-                                Toast.LENGTH_LONG).show();
-                    }
-                })
-                .setNegativeButton(R.string.dialog_negativ, new DialogInterface.OnClickListener()
-                {
-                    public void onClick(DialogInterface dialog, int id)
-                    {
-                        dialog.cancel();
-                        Toast.makeText(getApplicationContext(), R.string.dialog_ringsettings_abort,
-                                Toast.LENGTH_SHORT).show();
-                    }
-                }).show();
-    }
-
-    public void showAboutDialog()
-    {
-        final View aboutView = View.inflate(this, R.layout.dialog_about, null);
-
-        AlertDialog.Builder builder = new AlertDialog.Builder(this);
-        builder.setTitle(R.string.title_about_dialog);
-        builder.setView(aboutView)
-                .setCancelable(true)
-                .setPositiveButton(R.string.dialog_positiv, new DialogInterface.OnClickListener()
-                {
-                    public void onClick(DialogInterface dialog, int id)
-                    {
-                        dialog.dismiss();
-                    }
-                })
-                .setNegativeButton(R.string.button_show_changelog, new DialogInterface.OnClickListener()
-                {
-                    public void onClick(DialogInterface dialog, int id)
-                    {
-                        dialog.cancel();
-                        openWebPage(URI_CHANGELOG);
-                    }
-                }).show();
-    }
-
-    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
-        super.onActivityResult(requestCode, resultCode, data);
-
-        switch (requestCode) {
-            case RESULT_SETTINGS:
-            {
-                SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
-                this.prefAnomaly = sharedPrefs.getBoolean("prefAnomaly", true);
-                break;
-            }
-        }
-    }
-
-    public void openWebPage(String url) {
-        Uri webpage = Uri.parse(url);
-        Intent intent = new Intent(Intent.ACTION_VIEW, webpage);
-        if (intent.resolveActivity(getPackageManager()) != null) {
-            startActivity(intent);
-        }
-    }
-
-    public static class ActivitySingleton
-    {
-        private static ActivitySingleton instance = null;
-        private Activity activity;
-
-        private ActivitySingleton(){}
-        public static ActivitySingleton getInstance()
-        {
-            if(instance == null) instance = new ActivitySingleton();
-            return instance;
-        }
-
-        public void setActivity(Activity activity)
-        {
-            this.activity = activity;
-        }
-
-        public Activity getActivity()
-        {
-            return activity;
-        }
-
-    }
+	}
 }

app/src/main/java/de/vanitasvitae/enigmandroid/Plugboard.java

@@ -1,145 +0,0 @@
-package de.vanitasvitae.enigmandroid;
-
-import android.app.Activity;
-import android.widget.Toast;
-
-import java.util.ArrayList;
-
-/**
- * Created by vanitas on 12.08.15.
- */
-public class Plugboard
-{
-    Integer[] plugs;
-
-    public Plugboard()
-    {
-        plugs = new Integer[26];
-    }
-
-    public Plugboard(int[][] configuration)
-    {
-        setConfiguration(configuration);
-    }
-
-    public Plugboard(String configuration)
-    {
-        setConfiguration(parseConfigurationString(configuration));
-    }
-
-    /**
-     * Configure the plugboard according to the given array.
-     *
-     * @param configuration
-     */
-    public void setConfiguration(int[][] configuration)
-    {
-        if(configuration != null) {
-            boolean validConfiguration = true;
-            plugs = new Integer[26];
-            for (int[] p : configuration) {
-                if (!setPlugs(p[0], p[1])) {
-                    validConfiguration = false;
-                    break;
-                }
-            }
-            if (!validConfiguration) plugs = new Integer[26];
-        }
-        else plugs = new Integer[26];
-    }
-
-    /**
-     * Parse configuration from input string
-     * input must have the following form: "" or "XY" or "XY,VW" or "XY,...,AB"
-     * A character must not be inside the input multiple times. Exception is ','
-     * This is not catched here!
-     * @param input String that codes the configuration
-     * @return two dimensional array of plugged symbols
-     */
-    public static int[][] parseConfigurationString(String input)
-    {
-        Activity activity = MainActivity.ActivitySingleton.getInstance().getActivity();
-        //If length != 0,2,5,8... ( ,XY, XY-VW, ...)
-        if(((input.length()+1)%3)!=0&&input.length()!=0)
-        {
-            Toast.makeText(activity.getApplicationContext(), R.string.error_parsing_plugs,
-                    Toast.LENGTH_LONG).show();
-            return null;
-        }
-        else {
-            input = input.toUpperCase();
-            ArrayList<int[]> plugList = new ArrayList<int[]>();
-            int[] plug = new int[2];
-            for (int i = 0; i < input.length(); i++) {
-                int c = input.charAt(i) - 65;
-                if (c < 0 || c > 25) {
-                    if (i % 3 != 2) {
-                        Toast.makeText(activity.getApplicationContext(), R.string.error_parsing_plugs,
-                                Toast.LENGTH_LONG).show();
-                        return null;
-                    }
-                } else {
-                    if (i % 3 == 0) {
-                        plug = new int[2];
-                        plug[0] = c;
-                    }
-                    if (i % 3 == 1) {
-                        plug[1] = c;
-                        plugList.add(plug);
-                    }
-
-                }
-            }
-            int[][] parsedConfiguration = new int[plugList.size()][2];
-            for(int i=0; i<plugList.size(); i++)
-            {
-                parsedConfiguration[i] = plugList.get(i);
-            }
-            return parsedConfiguration;
-        }
-
-    }
-
-    /**
-     * Set the given plugs (connect a and b)
-     * Return false, if something goes wrong (plugs already used somehow)
-     * @param a first plug
-     * @param b second plug
-     * @return success
-     */
-    public boolean setPlugs(int a, int b)
-    {
-        Activity activity = MainActivity.ActivitySingleton.getInstance().getActivity();
-        if(a==b)
-        {
-            Toast.makeText(activity.getApplication().getApplicationContext(),
-                    activity.getResources().getText(R.string.error_unable_to_plug_a_b).toString()
-                            +" "+(char)(a+65)+","+(char) (b+65),Toast.LENGTH_LONG).show();
-            return false;
-        }
-        if(plugs[a] != null || plugs[b] != null)
-        {
-            Toast.makeText(activity.getApplication().getApplicationContext(),
-                    activity.getResources().getText(R.string.error_plug_already_in_use).toString()
-                            +" "+(char) (a+65)+","+(char)(b +65), Toast.LENGTH_SHORT).show();
-            return false;
-        }
-        else
-        {
-            plugs[a] = b;
-            plugs[b] = a;
-            return true;
-        }
-    }
-
-    /**
-     * Encrypt input via plugboard connections
-     * @param input input symbol to encrypt
-     * @return encrypted symbol
-     */
-    public int encrypt(int input)
-    {
-        if(plugs[input]==null) return input;
-        else return plugs[input];
-    }
-}

app/src/main/java/de/vanitasvitae/enigmandroid/SettingsActivity.java

@@ -1,34 +1,254 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.vanitasvitae.enigmandroid;
 
+import android.content.SharedPreferences;
+import android.content.res.Resources;
 import android.os.Bundle;
 import android.preference.PreferenceActivity;
+import android.util.Log;
 
 /**
  * Class that represents the settings activity.
- * Copyright (C) 2015  Paul Schaub
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *@author vanitasvitae
+ * Use the singleton to get an instance of this class to get preferences
  */
 public class SettingsActivity extends PreferenceActivity
 {
-    @Override
-    protected void onCreate(Bundle savedInstanceState)
-    {
-        super.onCreate(savedInstanceState);
-        //noinspection deprecation
-        addPreferencesFromResource(R.xml.pref_page);
-    }
-}
+	public static final String PREF_NUMERIC_LANGUAGE = "prefNumericLanguage";
+	public static final String PREF_MACHINE_TYPE = "prefMachineType";
+	public static final String PREF_MESSAGE_FORMATTING = "prefMessageFormatting";
+	public static final String PREF_REPLACE_SPECIAL_CHARACTERS = "prefReplaceSpecialCharacters";
+	public static final String PREF_SAVED_ENIGMA_STATE = "prefSavedEnigmaState";
+	public static final String PREF_VERSION_NUMBER = "prefVersionNumber";
+
+	private String previousPrefNumericLanguage;
+	private String previousPrefMachineType;
+	private String previousPrefMessageFormatting;
+	private boolean previousPrefReplaceSpecialCharacters;
+	private String previousPrefSavedEnigmaState;
+
+	private SharedPreferences prefs;
+	private Resources res;
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState)
+	{
+		super.onCreate(savedInstanceState);
+		//noinspection deprecation
+		addPreferencesFromResource(R.xml.pref_page);
+	}
+
+	public void setSharedPreferences(SharedPreferences prefs)
+	{
+		this.prefs = prefs;
+	}
+
+	public void setResources(Resources res)
+	{
+		this.res = res;
+	}
+
+	private boolean isFullyInitialized()
+	{
+		if (prefs == null)
+		{
+			Log.e(MainActivity.APP_ID,
+				  "SharedPreferences not initialized via setSharedPreferences!");
+			return false;
+		}
+		if (res == null)
+		{
+			Log.e(MainActivity.APP_ID, "Resources not initialized via setResources!");
+			return false;
+		}
+		return true;
+	}
+
+	public String getPrefNumericLanguage()
+	{
+		if (isFullyInitialized())
+			return prefs.getString(
+					PREF_NUMERIC_LANGUAGE,
+					res.getStringArray(R.array.pref_alias_message_formatting)[0]);
+		else return null;
+	}
+
+	public void setPrefNumericLanguage(String lang)
+	{
+		if (isFullyInitialized())
+			prefs.edit().putString(PREF_NUMERIC_LANGUAGE, lang).apply();
+	}
+
+	public boolean prefNumericLanguageChanged()
+	{
+		if (this.previousPrefNumericLanguage == null || !this.previousPrefNumericLanguage.equals(
+				getPrefNumericLanguage()))
+		{
+			this.previousPrefNumericLanguage = this.getPrefNumericLanguage();
+			Log.d(MainActivity.APP_ID, PREF_NUMERIC_LANGUAGE+" changed!");
+			return true;
+		}
+		return false;
+	}
+
+	/**
+	 * Return whether special characters will be replaced.
+	 * If the SettingsActivity is not fully initialized return false and ignore preference.
+	 * @return boolean
+	 */
+	public boolean getPrefReplaceSpecialCharacters()
+	{
+		return isFullyInitialized() && prefs.getBoolean(PREF_REPLACE_SPECIAL_CHARACTERS, true);
+	}
+
+	public void setPrefReplaceSpecialCharacters(boolean replace)
+	{
+		if (isFullyInitialized())
+			prefs.edit().putBoolean(PREF_REPLACE_SPECIAL_CHARACTERS, replace).apply();
+	}
+
+	public boolean prefReplaceSpecialCharactersChanged()
+	{
+		boolean changed = previousPrefReplaceSpecialCharacters != getPrefReplaceSpecialCharacters();
+		if (changed)
+		{
+			previousPrefReplaceSpecialCharacters = getPrefReplaceSpecialCharacters();
+			Log.d(MainActivity.APP_ID, PREF_REPLACE_SPECIAL_CHARACTERS+" changed!");
+			return true;
+		}
+		return false;
+	}
+
+	public String getPrefMachineType()
+	{
+		if (isFullyInitialized())
+			return prefs.getString(PREF_MACHINE_TYPE,
+								   res.getStringArray(R.array.pref_alias_machine_type)[0]);
+		else return null;
+	}
+
+	public void setPrefMachineType(String pref)
+	{
+		if (isFullyInitialized())
+			prefs.edit().putString(PREF_MACHINE_TYPE, pref).apply();
+	}
+
+	public boolean prefMachineTypeChanged()
+	{
+		if (this.previousPrefMachineType == null || !this.previousPrefMachineType.equals(
+				getPrefMachineType()))
+		{
+			this.previousPrefMachineType = this.getPrefMachineType();
+			Log.d(MainActivity.APP_ID, PREF_MACHINE_TYPE+" changed!");
+			return true;
+		}
+		return false;
+	}
+
+	public String getPrefSavedEnigmaState()
+	{
+		if (isFullyInitialized())
+			return prefs.getString(PREF_SAVED_ENIGMA_STATE, "-1");
+		else return null;
+	}
+
+	/**
+	 * @param state HEX
+	 */
+	public void setPrefSavedEnigmaState(String state)
+	{
+		if (isFullyInitialized())
+			prefs.edit().putString(PREF_SAVED_ENIGMA_STATE, state).apply();
+	}
+
+	public boolean prefSavedEnigmaStateChanged()
+	{
+		if (this.previousPrefSavedEnigmaState == null || !this.previousPrefSavedEnigmaState
+				.equals(getPrefSavedEnigmaState()))
+		{
+			this.previousPrefSavedEnigmaState = this.getPrefSavedEnigmaState();
+			Log.d(MainActivity.APP_ID, PREF_SAVED_ENIGMA_STATE+" changed!");
+			return true;
+		}
+		return false;
+	}
+
+	public String getPrefMessageFormatting()
+	{
+		if (isFullyInitialized())
+			return prefs.getString(SettingsActivity.PREF_MESSAGE_FORMATTING,
+								   res.getStringArray(R.array.pref_alias_message_formatting)[0]);
+		else return null;
+	}
+
+	public void setPrefMessageFormatting(String format)
+	{
+		if (isFullyInitialized())
+			prefs.edit().putString(PREF_MESSAGE_FORMATTING, format).apply();
+	}
+
+	public boolean prefMessageFormattingChanged()
+	{
+		if (this.previousPrefMessageFormatting == null || !this.previousPrefMessageFormatting
+				.equals(getPrefMessageFormatting()))
+		{
+			this.previousPrefMessageFormatting = this.getPrefMessageFormatting();
+			Log.d(MainActivity.APP_ID, PREF_MESSAGE_FORMATTING+" changed!");
+			return true;
+		}
+		return false;
+	}
+
+	public int getVersionNumber()
+	{
+		if (isFullyInitialized())
+			return prefs.getInt(PREF_VERSION_NUMBER, -1);
+		else return -1;
+	}
+
+	public void setVersionNumber(int v)
+	{
+		if (isFullyInitialized())
+			prefs.edit().putInt(PREF_VERSION_NUMBER, v).apply();
+	}
+
+	public static class SettingsSingleton extends SettingsActivity
+	{
+		private static SettingsActivity instance;
+
+		private SettingsSingleton()
+		{
+			super();
+		}
+
+		public static SettingsActivity getInstance(SharedPreferences prefs, Resources res)
+		{
+			instance = new SettingsActivity();
+			instance.setSharedPreferences(prefs);
+			instance.setResources(res);
+			return instance;
+		}
+
+		public static SettingsActivity getInstance()
+		{
+			if (instance == null)
+			{
+				instance = new SettingsActivity();
+				Log.d(MainActivity.APP_ID, "Created new SettingsActivity!");
+			}
+			return instance;
+		}
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma.java

@@ -0,0 +1,291 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.Random;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Main component of the Enigma machine
+ * This is the mostly abstract base of any enigma machine.
+ * Copyright (C) 2015  Paul Schaub
+ */
+public abstract class Enigma
+{
+	static String machineType;
+
+	boolean doAnomaly = false;  //Has the time come to handle an anomaly?
+
+	ArrayList<EntryWheel> availableEntryWheels;
+	ArrayList<Rotor> availableRotors;
+	ArrayList<Reflector> availableReflectors;
+
+	Random rand;
+
+	Enigma()
+	{
+		establishAvailableParts();
+		initialize();
+	}
+
+	/**
+	 * In this method, available EntryWheels, Rotors and Reflectors can be defined.
+	 */
+	protected abstract void establishAvailableParts();
+
+	/**
+	 * Add a Rotor to the ArrayList of available rotors for this machine.
+	 * Also set the index of the Rotor.
+	 * @param r Rotor
+	 */
+	void addAvailableRotor(Rotor r)
+	{
+		if(availableRotors == null) availableRotors = new ArrayList<>();
+		availableRotors.add(availableRotors.size(), r.setIndex(availableRotors.size()));
+	}
+
+	void addAvailableEntryWheel(EntryWheel e)
+	{
+		if(availableEntryWheels == null) availableEntryWheels = new ArrayList<>();
+		availableEntryWheels.add(availableEntryWheels.size(), e.setIndex(availableEntryWheels.size()));
+	}
+
+	void addAvailableReflector(Reflector r)
+	{
+		if(availableReflectors == null) availableReflectors = new ArrayList<>();
+		availableReflectors.add(availableReflectors.size(), r.setIndex(availableReflectors.size()));
+	}
+
+	public ArrayList<EntryWheel> getAvailableEntryWheels()
+	{
+		return availableEntryWheels;
+	}
+
+	public ArrayList<Rotor> getAvailableRotors()
+	{
+		return availableRotors;
+	}
+
+	public ArrayList<Reflector> getAvailableReflectors()
+	{
+		return availableReflectors;
+	}
+
+	EntryWheel getEntryWheel(int index)
+	{
+		if(availableEntryWheels == null || availableEntryWheels.size() == 0) return null;
+		return availableEntryWheels.get(index % availableEntryWheels.size()).getInstance();
+	}
+
+	Rotor getRotor(int index)
+	{
+		if(availableRotors == null || availableRotors.size() == 0) return null;
+		return availableRotors.get(index % availableRotors.size()).getInstance();
+	}
+
+	Rotor getRotor(int index, int rotation, int ringSetting)
+	{
+		return getRotor(index).setRotation(rotation).setRingSetting(ringSetting);
+	}
+
+	Reflector getReflector(int index)
+	{
+		if(availableReflectors == null || availableReflectors.size() == 0) return null;
+		return availableReflectors.get(index%availableReflectors.size()).getInstance();
+	}
+
+	Reflector getReflector(int index, int rotation, int ringSetting)
+	{
+		return getReflector(index).setRotation(rotation).setRingSetting(ringSetting);
+	}
+
+	/**
+	 * Set the enigma to an initial state
+	 */
+	protected abstract void initialize();
+
+	/**
+	 * Encrypt / Decrypt a given String w.
+	 * w must be prepared using prepare(w) beforehand.
+	 * Doing so changes the state of the rotors but not the state of the plugboard and the
+	 * ringSettings
+	 *
+	 * @param w Text to decrypt/encryptString
+	 * @return encrypted/decrypted string
+	 */
+	public String encryptString(String w)
+	{
+		//output string
+		String output = "";
+		//for each char x in k
+		for (char x : w.toCharArray())
+		{
+			output = output + this.encryptChar(x);
+		}
+		//return en-/decrypted string
+		return output;
+	}
+
+	/**
+	 * Set the enigma into the next mechanical state.
+	 * This rotates the first rotor and eventually also the second/third.
+	 * Also this method handles the anomaly in case it should happen.
+	 */
+	public abstract void nextState();
+
+	/**
+	 * Set the enigma into a completely random state using a unseeded SecureRandom object.
+	 */
+	public void randomState()
+	{
+		this.rand = ((MainActivity) (MainActivity.ActivitySingleton.getInstance().getActivity()))
+				.getSecureRandom();
+		generateState();
+	}
+
+	/**
+	 * Set the enigma to a random state based on the initialization of rand.
+	 * Don not choose a rotor twice, set random rotations, ringSettings, ukw and possibly
+	 * plugboard / rewirable ukw configurations.
+	 */
+	protected abstract void generateState();
+
+	/**
+	 * Substitute char k by sending the signal through the enigma.
+	 * The signal passes the plugboard, the rotors and returns back after going through the
+	 * reflector wheel.
+	 *
+	 * @param k input char
+	 * @return substituted output char
+	 */
+	protected abstract char encryptChar(char k);
+
+	/**
+	 * Set the state of the enigma
+	 * @param state new state
+	 */
+	public abstract void setState(EnigmaStateBundle state);
+
+	/**
+	 * Return an object representing the current state of the enigma
+	 * @return state
+	 */
+	public abstract EnigmaStateBundle getState();
+
+	/**
+	 * Set the rand into a certain state based on seed.
+	 * Then set the enigmas state.
+	 * @param seed passphrase
+	 */
+	public void setStateFromSeed(String seed)
+	{
+		rand = new Random(seed.hashCode());
+		generateState();
+	}
+
+	public abstract void restoreState(BigInteger mem, int protocol_version);
+
+	public BigInteger getEncodedState()
+	{
+		return getEncodedState(MainActivity.latest_protocol_version);
+	}
+	protected abstract BigInteger getEncodedState(int protocol_version);
+
+	private static String numToMachineType(int n)
+	{
+		int m = 13;
+		n = (m+(n+m)%m)%m; //Problem? Trolololo
+		switch (n) {
+			case 0: return "I";
+			case 1: return "M3";
+			case 2: return "M4";
+			case 3: return "G31";
+			case 4: return "G312";
+			case 5: return "G260";
+			case 6: return "D";
+			case 7: return "K";
+			case 8: return "KS";
+			case 9: return "KSA";
+			case 10: return "R";
+			case 11: return "T";
+			case 12: return "KD";
+			default: return "KD";
+		}
+	}
+
+	public static String chooseEnigmaFromSeed(String seed)
+	{
+		return numToMachineType(seed.hashCode() % 13);
+	}
+
+	public static String chooseEnigmaFromSave(BigInteger save)
+	{
+		return numToMachineType(getValue(save, 20));
+	}
+
+	/**
+	 * Return the name indicator of the enigma machine
+	 * @return name
+	 */
+	public String getMachineType()
+	{
+		return machineType;
+	}
+
+	/**
+	 *
+	 * @param s source
+	 * @param d domain (max value) of the value
+	 * @return value
+	 */
+	public static int getValue(BigInteger s, int d)
+	{
+		BigInteger o = s.mod(BigInteger.valueOf(d)).add(BigInteger.valueOf(d)).mod(BigInteger.valueOf(d));
+		return Integer.valueOf(o.toString());
+	}
+
+	/**
+	 * remove a digit of domain d from source s
+	 * @param s source
+	 * @param d domain (max value)
+	 * @return trimmed source
+	 */
+	public static BigInteger removeDigit(BigInteger s, int d)
+	{
+		s = s.subtract(s.mod(BigInteger.valueOf(d)));
+		s = s.divide(BigInteger.valueOf(d));
+		return s;
+	}
+
+	/**
+	 *
+	 * @param s source
+	 * @param b base (max value)
+	 * @param v actual value
+	 * @return lengthened source
+	 */
+	public static BigInteger addDigit(BigInteger s, int v, int b)
+	{
+		s = s.multiply(BigInteger.valueOf(b));
+		s = s.add(BigInteger.valueOf(v % b));
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/EnigmaStateBundle.java

@@ -0,0 +1,208 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+/**
+ * Class that contains a possible state of an enigma machine.
+ * Used to store and transport configuration and settings.
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class EnigmaStateBundle{
+    private String machineType;
+
+    private int typeEntryWheel;
+
+    private int typeRotor1;
+    private int typeRotor2;
+    private int typeRotor3;
+    private int typeRotor4;
+
+    private int rotationRotor1;
+    private int rotationRotor2;
+    private int rotationRotor3;
+    private int rotationRotor4;
+
+    private int ringSettingRotor1;
+    private int ringSettingRotor2;
+    private int ringSettingRotor3;
+    private int ringSettingRotor4;
+
+    private int typeReflector;
+
+    private int rotationReflector;
+    private int ringSettingReflector;
+
+    private int[] configurationPlugboard;
+
+    private int[] configurationReflector;
+
+// --Commented out by Inspection START (07.11.15 19:46):
+//    public String getMachineType()
+//    {
+//        return this.machineType;
+//    }
+// --Commented out by Inspection STOP (07.11.15 19:46)
+
+// --Commented out by Inspection START (07.11.15 19:46):
+//    public void setMachineType(String type)
+//    {
+//        this.machineType = type;
+//    }
+// --Commented out by Inspection STOP (07.11.15 19:46)
+
+    public int getTypeRotor1() {
+        return typeRotor1;
+    }
+
+    public void setTypeRotor1(int typeRotor1) {
+        this.typeRotor1 = typeRotor1;
+    }
+
+    public int getTypeRotor2() {
+        return typeRotor2;
+    }
+
+    public void setTypeRotor2(int typeRotor2) {
+        this.typeRotor2 = typeRotor2;
+    }
+
+    public int getTypeRotor3() {
+        return typeRotor3;
+    }
+
+    public void setTypeRotor3(int typeRotor3) {
+        this.typeRotor3 = typeRotor3;
+    }
+
+    public int getTypeRotor4() {
+        return typeRotor4;
+    }
+
+    public void setTypeRotor4(int typeRotor4) {
+        this.typeRotor4 = typeRotor4;
+    }
+
+    public int getRotationRotor1() {
+        return rotationRotor1;
+    }
+
+    public void setRotationRotor1(int rotationRotor1) {
+        this.rotationRotor1 = rotationRotor1;
+    }
+
+    public int getRotationRotor2() {
+        return rotationRotor2;
+    }
+
+    public void setRotationRotor2(int rotationRotor2) {
+        this.rotationRotor2 = rotationRotor2;
+    }
+
+    public int getRotationRotor3() {
+        return rotationRotor3;
+    }
+
+    public void setRotationRotor3(int rotationRotor3) {
+        this.rotationRotor3 = rotationRotor3;
+    }
+
+    public int getRotationRotor4() {
+        return rotationRotor4;
+    }
+
+    public void setRotationRotor4(int rotationRotor4) {
+        this.rotationRotor4 = rotationRotor4;
+    }
+
+    public int getRingSettingRotor1() {
+        return ringSettingRotor1;
+    }
+
+    public void setRingSettingRotor1(int ringSettingRotor1) {
+        this.ringSettingRotor1 = ringSettingRotor1;
+    }
+
+    public int getRingSettingRotor2() {
+        return ringSettingRotor2;
+    }
+
+    public void setRingSettingRotor2(int ringSettingRotor2) {
+        this.ringSettingRotor2 = ringSettingRotor2;
+    }
+
+    public int getRingSettingRotor3() {
+        return ringSettingRotor3;
+    }
+
+    public void setRingSettingRotor3(int ringSettingRotor3) {
+        this.ringSettingRotor3 = ringSettingRotor3;
+    }
+
+    public int getRingSettingRotor4() {
+        return ringSettingRotor4;
+    }
+
+    public void setRingSettingRotor4(int ringSettingRotor4) {
+        this.ringSettingRotor4 = ringSettingRotor4;
+    }
+
+    public int getTypeReflector() {
+        return typeReflector;
+    }
+
+    public void setTypeReflector(int typeReflector) {
+        this.typeReflector = typeReflector;
+    }
+
+    public int getTypeEntryWheel() {
+        return typeEntryWheel;
+    }
+
+    public void setTypeEntryWheel(int typeEntryWheel) {
+        this.typeEntryWheel = typeEntryWheel;
+    }
+
+    public int[] getConfigurationPlugboard() {
+        return configurationPlugboard;
+    }
+
+    public void setConfigurationPlugboard(int[] configurationPlugboard) {
+        this.configurationPlugboard = configurationPlugboard;
+    }
+
+    public int[] getConfigurationReflector() {
+        return configurationReflector;
+    }
+
+    public void setConfigurationReflector(int[] configurationReflector) {
+        this.configurationReflector = configurationReflector;
+    }
+
+    public int getRotationReflector() {
+        return rotationReflector;
+    }
+
+    public void setRotationReflector(int rotationReflector) {
+        this.rotationReflector = rotationReflector;
+    }
+
+    public int getRingSettingReflector() {
+        return ringSettingReflector;
+    }
+
+    public void setRingSettingReflector(int ringSettingReflector) {
+        this.ringSettingReflector = ringSettingReflector;
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_D.java

@@ -0,0 +1,221 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Plugboard;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Concrete implementation of an enigma machine of name D
+ * This machine has a rewirable UKW, non changeable rotors.
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_D extends Enigma {
+
+	private EntryWheel entryWheel;
+	private Rotor rotor1;
+	private Rotor rotor2;
+	private Rotor rotor3;
+	private Reflector reflector;
+
+	public Enigma_D()
+	{
+		super();
+		machineType = "D";
+		Log.d(MainActivity.APP_ID, "Created Enigma D");
+	}
+
+	@Override
+	protected void establishAvailableParts()
+	{
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_QWERTZ());
+
+		addAvailableRotor(new Rotor.Rotor_K_D_I(0, 0));
+		addAvailableRotor(new Rotor.Rotor_K_D_II(0, 0));
+		addAvailableRotor(new Rotor.Rotor_K_D_III(0, 0));
+
+		addAvailableReflector(new Reflector.ReflectorEnigma_D_G31());
+	}
+
+	@Override
+	public void initialize()
+	{
+		this.entryWheel = availableEntryWheels.get(0);
+		this.rotor1 = availableRotors.get(0);
+		this.rotor2 = availableRotors.get(1);
+		this.rotor3 = availableRotors.get(2);
+		this.reflector = availableReflectors.get(0);
+	}
+
+	@Override
+	public void nextState()
+	{
+		rotor1.rotate();
+		if (rotor1.isAtTurnoverPosition() || this.doAnomaly)
+		{
+			rotor2.rotate();
+			this.doAnomaly = rotor2.doubleTurnAnomaly();
+			if (rotor2.isAtTurnoverPosition())
+			{
+				rotor3.rotate();
+			}
+		}
+	}
+
+	@Override
+	protected void generateState() {
+		int rot1 = rand.nextInt(26);
+		int rot2 = rand.nextInt(26);
+		int rot3 = rand.nextInt(26);
+		int rotRef = rand.nextInt(26);
+		int ring1 = rand.nextInt(26);
+		int ring2 = rand.nextInt(26);
+		int ring3 = rand.nextInt(26);
+		int ringRef = rand.nextInt(26);
+
+		this.rotor1.setRotation(rot1).setRingSetting(ring1);
+		this.rotor2.setRotation(rot2).setRingSetting(ring2);
+		this.rotor3.setRotation(rot3).setRingSetting(ring3);
+
+		this.reflector.setRotation(rotRef).setRingSetting(ringRef)
+				.setConfiguration(Plugboard.seedToReflectorConfiguration(rand));
+	}
+
+	@Override
+	public char encryptChar(char k)
+	{
+		nextState();
+		int x = ((int) k)-65;   //Cast to int and remove Unicode Offset (A=65 in Unicode.)
+		//Encryption
+		//forward direction
+		x = entryWheel.encryptForward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting());
+		x = rotor1.encryptForward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting() + rotor2.getRotation() - rotor2.getRingSetting());
+		x = rotor2.encryptForward(x);
+		x = rotor1.normalize(x - rotor2.getRotation() + rotor2.getRingSetting() + rotor3.getRotation() - rotor3.getRingSetting());
+		x = rotor3.encryptForward(x);
+		x = rotor1.normalize(x - rotor3.getRotation() + rotor3.getRingSetting() + reflector.getRotation() - reflector.getRingSetting());
+		//backward direction
+		x = reflector.encrypt(x);
+		x = rotor1.normalize(x + rotor3.getRotation() - rotor3.getRingSetting() - reflector.getRotation() + reflector.getRingSetting());
+		x = rotor3.encryptBackward(x);
+		x = rotor1.normalize(x + rotor2.getRotation() - rotor2.getRingSetting() - rotor3.getRotation() + rotor3.getRingSetting());
+		x = rotor2.encryptBackward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting() - rotor2.getRotation() + rotor2.getRingSetting());
+		x = rotor1.encryptBackward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting());
+		x = entryWheel.encryptBackward(x);
+		return (char) (x + 65);     //Add Offset again, cast back to char and return
+	}
+
+	@Override
+	public void setState(EnigmaStateBundle state)
+	{
+		this.entryWheel = getEntryWheel(state.getTypeEntryWheel());
+		this.rotor1 = getRotor(state.getTypeRotor1(), state.getRotationRotor1(), state.getRingSettingRotor1());
+		this.rotor2 = getRotor(state.getTypeRotor2(), state.getRotationRotor2(), state.getRingSettingRotor2());
+		this.rotor3 = getRotor(state.getTypeRotor3(), state.getRotationRotor3(), state.getRingSettingRotor3());
+		this.reflector = getReflector(state.getTypeReflector(),
+									  state.getRotationReflector(),
+									  state.getRingSettingReflector())
+				.setConfiguration(state.getConfigurationReflector());
+	}
+
+	@Override
+	public EnigmaStateBundle getState()
+	{
+		EnigmaStateBundle state = new EnigmaStateBundle();
+
+		state.setTypeEntryWheel(entryWheel.getIndex());
+
+		state.setTypeRotor1(rotor1.getIndex());
+		state.setTypeRotor2(rotor2.getIndex());
+		state.setTypeRotor3(rotor3.getIndex());
+
+		state.setRotationRotor1(rotor1.getRotation());
+		state.setRotationRotor2(rotor2.getRotation());
+		state.setRotationRotor3(rotor3.getRotation());
+
+		state.setRingSettingRotor1(rotor1.getRingSetting());
+		state.setRingSettingRotor2(rotor2.getRingSetting());
+		state.setRingSettingRotor3(rotor3.getRingSetting());
+
+		state.setTypeReflector(reflector.getIndex());
+		state.setRotationReflector(reflector.getRotation());
+		state.setRingSettingReflector(reflector.getRingSetting());
+		state.setConfigurationReflector(reflector.getConfiguration());
+
+		return state;
+	}
+
+	@Override
+	public void restoreState(BigInteger s, int protocol_version)
+	{
+		switch(protocol_version)
+		{
+			case 1:
+				int rot1 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring1 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rot2 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring2 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rot3 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring3 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rotRef = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ringRef = getValue(s, 26);
+				s = removeDigit(s, 26);
+
+				this.rotor1 = getRotor(0, rot1, ring1);
+				this.rotor2 = getRotor(1, rot2, ring2);
+				this.rotor3 = getRotor(2, rot3, ring3);
+				this.reflector = getReflector(0, rotRef, ringRef);
+				this.reflector.setConfiguration(s);
+				break;
+
+			default: Log.e(MainActivity.APP_ID, "Unsupported protocol version "+protocol_version);
+		}
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version) {
+		BigInteger s = Plugboard.configurationToBigInteger(reflector.getConfiguration());
+		s = addDigit(s, reflector.getRingSetting(), 26);
+		s = addDigit(s, reflector.getRotation(), 26);
+		s = addDigit(s, rotor3.getRingSetting(), 26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(), 26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, 6, 20); //Machine #6
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_G260.java

@@ -0,0 +1,70 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Implementation of the Enigma machine of name G31 (Abwehr)
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_G260 extends Enigma_G31
+{
+	public Enigma_G260()
+	{
+		super();
+		machineType = "G260";
+		Log.d(MainActivity.APP_ID, "Created Enigma G260");
+	}
+
+	@Override
+	protected void establishAvailableParts()
+	{
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_QWERTZ());
+		addAvailableRotor(new Rotor.Rotor_G260_I(0, 0));
+		addAvailableRotor(new Rotor.Rotor_G260_II(0, 0));
+		addAvailableRotor(new Rotor.Rotor_G260_III(0, 0));
+		addAvailableReflector(new Reflector.Reflector_K_G260());
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version)
+	{
+		BigInteger s = BigInteger.valueOf(reflector.getRingSetting());
+		s = addDigit(s, reflector.getRotation(), 26);
+		s = addDigit(s, rotor3.getRingSetting(), 26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(), 26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+		s = addDigit(s, 5, 20); //Machine #5
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_G31.java

@@ -0,0 +1,230 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Implementation of the Enigma machine of name G31 (Abwehr)
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_G31 extends Enigma
+{
+	private EntryWheel entryWheel;
+	Rotor rotor1;
+	Rotor rotor2;
+	Rotor rotor3;
+	Reflector reflector;
+
+	public Enigma_G31()
+	{
+		super();
+		machineType = "G31";
+		Log.d(MainActivity.APP_ID, "Created Enigma G31");
+	}
+
+	@Override
+	protected void establishAvailableParts()
+	{
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_QWERTZ());
+		addAvailableRotor(new Rotor.Rotor_G31_I(0, 0));
+		addAvailableRotor(new Rotor.Rotor_G31_II(0, 0));
+		addAvailableRotor(new Rotor.Rotor_G31_III(0, 0));
+		addAvailableReflector(new Reflector.ReflectorEnigma_D_G31());
+	}
+
+	@Override
+	public void initialize()
+	{
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(0);
+		this.rotor2 = getRotor(1);
+		this.rotor3 = getRotor(2);
+		this.reflector = getReflector(0);
+	}
+
+	@Override
+	public void nextState()
+	{
+		rotor1.rotate();
+		if (rotor1.isAtTurnoverPosition())
+		{
+			rotor2.rotate();
+			if (rotor2.isAtTurnoverPosition())
+			{
+				rotor3.rotate();
+				if(rotor3.isAtTurnoverPosition())
+				{
+					reflector.setRotation(reflector.getRotation()+1);
+				}
+			}
+		}
+	}
+
+	protected void generateState()
+	{
+		int r1, r2=-1, r3;
+		r1 = rand.nextInt(3);
+		while(r2 == -1 || r2 == r1) r2 = rand.nextInt(3);
+		r3 = 3 - r1 - r2;
+
+		int rot1 = rand.nextInt(26);
+		int rot2 = rand.nextInt(26);
+		int rot3 = rand.nextInt(26);
+		int rotRef = rand.nextInt(26);
+		int ring1 = rand.nextInt(26);
+		int ring2 = rand.nextInt(26);
+		int ring3 = rand.nextInt(26);
+		int ringRef = rand.nextInt(26);
+
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(r1, rot1, ring1);
+		this.rotor2 = getRotor(r2, rot2, ring2);
+		this.rotor3 = getRotor(r3, rot3, ring3);
+		this.reflector = getReflector(0, rotRef, ringRef);
+	}
+
+	@Override
+	public char encryptChar(char k) {
+		nextState();
+		int x = ((int) k)-65;   //Cast to int and remove Unicode Offset (A=65 in Unicode.)
+		//Encryption
+		//forward direction
+		x = entryWheel.encryptForward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting());
+		x = rotor1.encryptForward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting() + rotor2.getRotation() - rotor2.getRingSetting());
+		x = rotor2.encryptForward(x);
+		x = rotor1.normalize(x - rotor2.getRotation() + rotor2.getRingSetting() + rotor3.getRotation() - rotor3.getRingSetting());
+		x = rotor3.encryptForward(x);
+		x = rotor1.normalize(x - rotor3.getRotation() + rotor3.getRingSetting() + reflector.getRotation() - reflector.getRingSetting());
+		//backward direction
+		x = reflector.encrypt(x);
+		x = rotor1.normalize(x + rotor3.getRotation() - rotor3.getRingSetting() - reflector.getRotation() + reflector.getRingSetting());
+		x = rotor3.encryptBackward(x);
+		x = rotor1.normalize(x + rotor2.getRotation() - rotor2.getRingSetting() - rotor3.getRotation() + rotor3.getRingSetting());
+		x = rotor2.encryptBackward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting() - rotor2.getRotation() + rotor2.getRingSetting());
+		x = rotor1.encryptBackward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting());
+		x = entryWheel.encryptBackward(x);
+		return (char) (x + 65);     //Add Offset again, cast back to char and return
+	}
+
+	@Override
+	public void setState(EnigmaStateBundle state)
+	{
+		this.entryWheel = getEntryWheel(state.getTypeEntryWheel());
+		this.rotor1 = getRotor(state.getTypeRotor1(), state.getRotationRotor1(), state.getRingSettingRotor1());
+		this.rotor2 = getRotor(state.getTypeRotor2(), state.getRotationRotor2(), state.getRingSettingRotor2());
+		this.rotor3 = getRotor(state.getTypeRotor3(), state.getRotationRotor3(), state.getRingSettingRotor3());
+		this.reflector = getReflector(state.getTypeReflector(),
+									  state.getRotationReflector(), state.getRingSettingReflector());
+	}
+
+	@Override
+	public EnigmaStateBundle getState() {
+		EnigmaStateBundle state = new EnigmaStateBundle();
+
+		state.setTypeEntryWheel(entryWheel.getIndex());
+
+		state.setTypeRotor1(rotor1.getIndex());
+		state.setTypeRotor2(rotor2.getIndex());
+		state.setTypeRotor3(rotor3.getIndex());
+
+		state.setRotationRotor1(rotor1.getRotation());
+		state.setRotationRotor2(rotor2.getRotation());
+		state.setRotationRotor3(rotor3.getRotation());
+
+		state.setRingSettingRotor1(rotor1.getRingSetting());
+		state.setRingSettingRotor2(rotor2.getRingSetting());
+		state.setRingSettingRotor3(rotor3.getRingSetting());
+
+		state.setTypeReflector(reflector.getIndex());
+		state.setRotationReflector(reflector.getRotation());
+		state.setRingSettingReflector(reflector.getRingSetting());
+
+		return state;
+	}
+
+	@Override
+	public void restoreState(BigInteger s, int protocol_version)
+	{
+		switch (protocol_version)
+		{
+			case 1:
+				int r1 = getValue(s, availableRotors.size());
+				s = removeDigit(s, availableRotors.size());
+				int r2 = getValue(s, availableRotors.size());
+				s = removeDigit(s, availableRotors.size());
+				int r3 = getValue(s, availableRotors.size());
+				s = removeDigit(s, availableRotors.size());
+
+				int rot1 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring1 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rot2 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring2 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rot3 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring3 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rotRef = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ringRef = getValue(s, 26);
+
+
+				this.entryWheel = getEntryWheel(0);
+				this.rotor1 = getRotor(r1, rot1, ring1);
+				this.rotor2 = getRotor(r2, rot2, ring2);
+				this.rotor3 = getRotor(r3, rot3, ring3);
+				this.reflector = getReflector(0, rotRef, ringRef);
+				break;
+
+			default: Log.e(MainActivity.APP_ID, "Unsupported protocol version "+protocol_version);
+		}
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version)
+	{
+		BigInteger s = BigInteger.valueOf(reflector.getRingSetting());
+		s = addDigit(s, reflector.getRotation(), 26);
+		s = addDigit(s, rotor3.getRingSetting(), 26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(), 26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+		s = addDigit(s, 3, 20); //Machine #3
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_G312.java

@@ -0,0 +1,70 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Implementation of the Enigma machine of name G31 (Abwehr)
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_G312 extends Enigma_G31
+{
+	public Enigma_G312()
+	{
+		super();
+		machineType = "G312";
+		Log.d(MainActivity.APP_ID, "Created Enigma G312");
+	}
+
+	@Override
+	protected void establishAvailableParts()
+	{
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_QWERTZ());
+		addAvailableRotor(new Rotor.Rotor_G312_I(0, 0));
+		addAvailableRotor(new Rotor.Rotor_G312_II(0, 0));
+		addAvailableRotor(new Rotor.Rotor_G312_III(0, 0));
+		addAvailableReflector(new Reflector.Reflector_G312());
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version)
+	{
+		BigInteger s = BigInteger.valueOf(reflector.getRingSetting());
+		s = addDigit(s, reflector.getRotation(), 26);
+		s = addDigit(s, rotor3.getRingSetting(), 26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(), 26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+		s = addDigit(s, 4, 20); //Machine #4
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_I.java

@@ -0,0 +1,239 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Plugboard;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Concrete implementation of an enigma machine of name I
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_I extends Enigma
+{
+	EntryWheel entryWheel;
+	Rotor rotor1;
+	Rotor rotor2;
+	Rotor rotor3;
+	Reflector reflector;
+
+	Plugboard plugboard;
+
+	public Enigma_I()
+	{
+		super();
+		machineType = "I";
+		Log.d(MainActivity.APP_ID, "Created Enigma I");
+	}
+
+	@Override
+	protected void establishAvailableParts() {
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_ABCDEF());
+		addAvailableRotor(new Rotor.Rotor_I(0, 0));
+		addAvailableRotor(new Rotor.Rotor_II(0,0));
+		addAvailableRotor(new Rotor.Rotor_III(0,0));
+		addAvailableRotor(new Rotor.Rotor_IV(0,0));
+		addAvailableRotor(new Rotor.Rotor_V(0,0));
+		addAvailableReflector(new Reflector.Reflector_A());
+		addAvailableReflector(new Reflector.Reflector_B());
+		addAvailableReflector(new Reflector.Reflector_C());
+	}
+
+	@Override
+	public void initialize()
+	{
+		this.plugboard= new Plugboard();
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(0, 0, 0);
+		this.rotor2 = getRotor(1, 0, 0);
+		this.rotor3 = getRotor(2, 0, 0);
+		this.reflector = getReflector(0);
+	}
+
+	@Override
+	public void nextState()
+	{
+		rotor1.rotate();
+		if (rotor1.isAtTurnoverPosition() || this.doAnomaly)
+		{
+			rotor2.rotate();
+			this.doAnomaly = rotor2.doubleTurnAnomaly();
+			if (rotor2.isAtTurnoverPosition())
+			{
+				rotor3.rotate();
+			}
+		}
+	}
+
+	@Override
+	protected void generateState() {
+		int r1, r2=-1, r3=-1;
+		r1 = rand.nextInt(5);
+		while(r2 == -1 || r2 == r1) r2 = rand.nextInt(5);
+		while(r3 == -1 || r3 == r2 || r3 == r1) r3 = rand.nextInt(5);
+		int ref = rand.nextInt(3);
+
+		int rot1 = rand.nextInt(26);
+		int rot2 = rand.nextInt(26);
+		int rot3 = rand.nextInt(26);
+		int ring1 = rand.nextInt(26);
+		int ring2 = rand.nextInt(26);
+		int ring3 = rand.nextInt(26);
+
+		this.rotor1 = getRotor(r1, rot1, ring1);
+		this.rotor2 = getRotor(r2, rot2, ring2);
+		this.rotor3 = getRotor(r3, rot3, ring3);
+		this.reflector = getReflector(ref);
+
+		this.plugboard = new Plugboard();
+		plugboard.setConfiguration(Plugboard.seedToPlugboardConfiguration(rand));
+	}
+
+	@Override
+	public char encryptChar(char k)
+	{
+		nextState();
+		int x = ((int) k)-65;   //Cast to int and remove Unicode Offset (A=65 in Unicode.)
+		//Encryption
+		//forward direction
+		x = plugboard.encrypt(x);
+		x = entryWheel.encryptForward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting());
+		x = rotor1.encryptForward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting() + rotor2.getRotation() - rotor2.getRingSetting());
+		x = rotor2.encryptForward(x);
+		x = rotor1.normalize(x - rotor2.getRotation() + rotor2.getRingSetting() + rotor3.getRotation() - rotor3.getRingSetting());
+		x = rotor3.encryptForward(x);
+		x = rotor1.normalize(x - rotor3.getRotation() + rotor3.getRingSetting());
+		//backward direction
+		x = reflector.encrypt(x);
+		x = rotor1.normalize(x + rotor3.getRotation() - rotor3.getRingSetting());
+		x = rotor3.encryptBackward(x);
+		x = rotor1.normalize(x + rotor2.getRotation() - rotor2.getRingSetting() - rotor3.getRotation() + rotor3.getRingSetting());
+		x = rotor2.encryptBackward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting() - rotor2.getRotation() + rotor2.getRingSetting());
+		x = rotor1.encryptBackward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting());
+		x = entryWheel.encryptBackward(x);
+		x = plugboard.encrypt(x);
+		return (char) (x + 65);     //Add Offset again, cast back to char and return
+	}
+
+	@Override
+	public void setState(EnigmaStateBundle state)
+	{
+		plugboard.setConfiguration(state.getConfigurationPlugboard());
+		entryWheel = getEntryWheel(state.getTypeEntryWheel());
+		rotor1 = getRotor(state.getTypeRotor1(), state.getRotationRotor1(), state.getRingSettingRotor1());
+		rotor2 = getRotor(state.getTypeRotor2(), state.getRotationRotor2(), state.getRingSettingRotor2());
+		rotor3 = getRotor(state.getTypeRotor3(), state.getRotationRotor3(), state.getRingSettingRotor3());
+		reflector = getReflector(state.getTypeReflector());
+	}
+
+	@Override
+	public EnigmaStateBundle getState()
+	{
+		EnigmaStateBundle state = new EnigmaStateBundle();
+
+		state.setConfigurationPlugboard(plugboard.getConfiguration());
+
+		state.setTypeEntryWheel(entryWheel.getIndex());
+
+		state.setTypeRotor1(rotor1.getIndex());
+		state.setTypeRotor2(rotor2.getIndex());
+		state.setTypeRotor3(rotor3.getIndex());
+
+		state.setTypeReflector(reflector.getIndex());
+
+		state.setRotationRotor1(rotor1.getRotation());
+		state.setRotationRotor2(rotor2.getRotation());
+		state.setRotationRotor3(rotor3.getRotation());
+
+		state.setRingSettingRotor1(rotor1.getRingSetting());
+		state.setRingSettingRotor2(rotor2.getRingSetting());
+		state.setRingSettingRotor3(rotor3.getRingSetting());
+
+		return state;
+	}
+
+	@Override
+	public void restoreState(BigInteger s, int protocol_version)
+	{
+		switch (protocol_version)
+		{
+			case 1:
+				int r1 = getValue(s, availableRotors.size());
+				s = removeDigit(s, availableRotors.size());
+				int r2 = getValue(s, availableRotors.size());
+				s = removeDigit(s, availableRotors.size());
+				int r3 = getValue(s, availableRotors.size());
+				s = removeDigit(s, availableRotors.size());
+				int ref = getValue(s, availableReflectors.size());
+				s = removeDigit(s, availableReflectors.size());
+				int rot1 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring1 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rot2 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring2 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rot3 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring3 = getValue(s, 26);
+				s = removeDigit(s, 26);
+
+				this.entryWheel = getEntryWheel(0);
+				this.rotor1 = getRotor(r1, rot1, ring1);
+				this.rotor2 = getRotor(r2, rot2, ring2);
+				this.rotor3 = getRotor(r3, rot3, ring3);
+				this.reflector = getReflector(ref);
+
+				this.plugboard = new Plugboard();
+				plugboard.setConfiguration(s);
+				break;
+
+			default: Log.e(MainActivity.APP_ID, "Unsupported protocol version "+protocol_version);
+		}
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version) {
+		BigInteger s = Plugboard.configurationToBigInteger(plugboard.getConfiguration());
+		s = addDigit(s, rotor3.getRingSetting(), 26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(), 26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, reflector.getIndex(), availableReflectors.size());
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+		s = addDigit(s, 0, 20); //Machine #0
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_K.java

@@ -0,0 +1,227 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Implementation of the Enigma machine of name K
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_K extends Enigma
+{
+	private EntryWheel entryWheel;
+	Rotor rotor1;
+	Rotor rotor2;
+	Rotor rotor3;
+	Reflector reflector;
+
+	public Enigma_K()
+	{
+		super();
+		machineType = "K";
+		Log.d(MainActivity.APP_ID, "Created Enigma K");
+	}
+
+	@Override
+	protected void establishAvailableParts()
+	{
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_QWERTZ());
+		addAvailableRotor(new Rotor.Rotor_K_D_I(0, 0));
+		addAvailableRotor(new Rotor.Rotor_K_D_II(0,0));
+		addAvailableRotor(new Rotor.Rotor_K_D_III(0,0));
+		addAvailableReflector(new Reflector.Reflector_K_G260());
+	}
+
+	@Override
+	public void initialize()
+	{
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(0, 0, 0);
+		this.rotor2 = getRotor(1, 0, 0);
+		this.rotor3 = getRotor(2, 0, 0);
+		this.reflector = getReflector(0);
+	}
+
+	@Override
+	public void nextState()
+	{
+		rotor1.rotate();
+		if (rotor1.isAtTurnoverPosition() || this.doAnomaly)
+		{
+			rotor2.rotate();
+			this.doAnomaly = rotor2.doubleTurnAnomaly();
+			if (rotor2.isAtTurnoverPosition())
+			{
+				rotor3.rotate();
+			}
+		}
+	}
+
+	@Override
+	protected void generateState() {
+		int r1, r2=-1, r3;
+		r1 = rand.nextInt(3);
+		while(r2 == -1 || r2 == r1) r2 = rand.nextInt(3);
+		r3 = 3 - r1 - r2;
+
+		int rot1 = rand.nextInt(26);
+		int rot2 = rand.nextInt(26);
+		int rot3 = rand.nextInt(26);
+		int rotRef = rand.nextInt(26);
+		int ring1 = rand.nextInt(26);
+		int ring2 = rand.nextInt(26);
+		int ring3 = rand.nextInt(26);
+		int ringRef = rand.nextInt(26);
+
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(r1, rot1, ring1);
+		this.rotor2 = getRotor(r2, rot2, ring2);
+		this.rotor3 = getRotor(r3, rot3, ring3);
+		this.reflector = getReflector(0, rotRef, ringRef);
+	}
+
+	@Override
+	public char encryptChar(char k) {
+		nextState();
+		int x = ((int) k)-65;   //Cast to int and remove Unicode Offset (A=65 in Unicode.)
+		//Encryption
+		//forward direction
+		x = entryWheel.encryptForward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting());
+		x = rotor1.encryptForward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting() + rotor2.getRotation() - rotor2.getRingSetting());
+		x = rotor2.encryptForward(x);
+		x = rotor1.normalize(x - rotor2.getRotation() + rotor2.getRingSetting() + rotor3.getRotation() - rotor3.getRingSetting());
+		x = rotor3.encryptForward(x);
+		x = rotor1.normalize(x - rotor3.getRotation() + rotor3.getRingSetting() + reflector.getRotation() - reflector.getRingSetting());
+		//backward direction
+		x = reflector.encrypt(x);
+		x = rotor1.normalize(x + rotor3.getRotation() - rotor3.getRingSetting() - reflector.getRotation() + reflector.getRingSetting());
+		x = rotor3.encryptBackward(x);
+		x = rotor1.normalize(x + rotor2.getRotation() - rotor2.getRingSetting() - rotor3.getRotation() + rotor3.getRingSetting());
+		x = rotor2.encryptBackward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting() - rotor2.getRotation() + rotor2.getRingSetting());
+		x = rotor1.encryptBackward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting());
+		x = entryWheel.encryptBackward(x);
+		return (char) (x + 65);     //Add Offset again, cast back to char and return
+	}
+
+	@Override
+	public void setState(EnigmaStateBundle state)
+	{
+		this.entryWheel = getEntryWheel(state.getTypeEntryWheel());
+		this.rotor1 = getRotor(state.getTypeRotor1(), state.getRotationRotor1(), state.getRingSettingRotor1());
+		this.rotor2 = getRotor(state.getTypeRotor2(), state.getRotationRotor2(), state.getRingSettingRotor2());
+		this.rotor3 = getRotor(state.getTypeRotor3(), state.getRotationRotor3(), state.getRingSettingRotor3());
+		this.reflector = getReflector(state.getTypeReflector(), state.getRotationReflector(), state.getRingSettingReflector());
+	}
+
+	@Override
+	public EnigmaStateBundle getState()
+	{
+		EnigmaStateBundle state = new EnigmaStateBundle();
+
+		state.setTypeEntryWheel(entryWheel.getIndex());
+
+		state.setTypeRotor1(rotor1.getIndex());
+		state.setTypeRotor2(rotor2.getIndex());
+		state.setTypeRotor3(rotor3.getIndex());
+
+		state.setRotationRotor1(rotor1.getRotation());
+		state.setRotationRotor2(rotor2.getRotation());
+		state.setRotationRotor3(rotor3.getRotation());
+
+		state.setRingSettingRotor1(rotor1.getRingSetting());
+		state.setRingSettingRotor2(rotor2.getRingSetting());
+		state.setRingSettingRotor3(rotor3.getRingSetting());
+
+		state.setTypeReflector(reflector.getIndex());
+		state.setRotationReflector(reflector.getRotation());
+		state.setRingSettingReflector(reflector.getRingSetting());
+
+		return state;
+	}
+
+	@Override
+	public void restoreState(BigInteger s, int protocol_version)
+	{
+		switch (protocol_version)
+		{
+			case 1:
+				int r1 = getValue(s,availableRotors.size());
+				s = removeDigit(s,availableRotors.size());
+				int r2 = getValue(s,availableRotors.size());
+				s = removeDigit(s,availableRotors.size());
+				int r3 = getValue(s,availableRotors.size());
+				s = removeDigit(s,availableRotors.size());
+
+				int rot1 = getValue(s,26);
+				s = removeDigit(s,26);
+				int ring1 = getValue(s,26);
+				s = removeDigit(s,26);
+				int rot2 = getValue(s,26);
+				s = removeDigit(s,26);
+				int ring2 = getValue(s,26);
+				s = removeDigit(s,26);
+				int rot3 = getValue(s,26);
+				s = removeDigit(s,26);
+				int ring3 = getValue(s,26);
+				s = removeDigit(s,26);
+				int rotRef = getValue(s,26);
+				s = removeDigit(s,26);
+				int ringRef = getValue(s,26);
+
+				this.entryWheel = getEntryWheel(0);
+				this.rotor1 = getRotor(r1, rot1, ring1);
+				this.rotor2 = getRotor(r2, rot2, ring2);
+				this.rotor3 = getRotor(r3, rot3, ring3);
+				this.reflector = getReflector(0, rotRef, ringRef);
+				break;
+
+			default: Log.e(MainActivity.APP_ID, "Unsupported protocol version "+protocol_version);
+		}
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version)
+	{
+		BigInteger s = BigInteger.valueOf(reflector.getRingSetting());
+		s = addDigit(s, reflector.getRotation(), 26);
+		s = addDigit(s, rotor3.getRingSetting(),26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(),26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+		s = addDigit(s, 7, 20); //Machine #7
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_KD.java

@@ -0,0 +1,240 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Plugboard;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Concrete implementation of an enigma machine of name D
+ * This machine has a rewirable UKW, non changeable rotors.
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_KD extends Enigma {
+
+	private EntryWheel entryWheel;
+	private Rotor rotor1;
+	private Rotor rotor2;
+	private Rotor rotor3;
+	private Reflector reflector;
+
+	public Enigma_KD()
+	{
+		super();
+		machineType = "KD";
+		Log.d(MainActivity.APP_ID, "Created Enigma KD");
+	}
+
+	@Override
+	protected void establishAvailableParts()
+	{
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_QWERTZ());
+
+		addAvailableRotor(new Rotor.Rotor_KD_I(0, 0));
+		addAvailableRotor(new Rotor.Rotor_KD_II(0, 0));
+		addAvailableRotor(new Rotor.Rotor_KD_III(0, 0));
+
+		addAvailableReflector(new Reflector.ReflectorEnigma_KD());
+	}
+
+	@Override
+	public void initialize()
+	{
+		this.entryWheel = availableEntryWheels.get(0);
+		this.rotor1 = availableRotors.get(0);
+		this.rotor2 = availableRotors.get(1);
+		this.rotor3 = availableRotors.get(2);
+		this.reflector = availableReflectors.get(0);
+	}
+
+	@Override
+	public void nextState()
+	{
+		rotor1.rotate();
+		if (rotor1.isAtTurnoverPosition() || this.doAnomaly)
+		{
+			rotor2.rotate();
+			this.doAnomaly = rotor2.doubleTurnAnomaly();
+			if (rotor2.isAtTurnoverPosition())
+			{
+				rotor3.rotate();
+			}
+		}
+	}
+
+	@Override
+	protected void generateState() {
+		int r1, r2=-1, r3;
+		r1 = rand.nextInt(3);
+		while(r2 == -1 || r2 == r1) r2 = rand.nextInt(3);
+		r3 = 3 - r1 - r2;
+
+		int rot1 = rand.nextInt(26);
+		int rot2 = rand.nextInt(26);
+		int rot3 = rand.nextInt(26);
+		int rotRef = rand.nextInt(26);
+		int ring1 = rand.nextInt(26);
+		int ring2 = rand.nextInt(26);
+		int ring3 = rand.nextInt(26);
+		int ringRef = rand.nextInt(26);
+
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(r1, rot1, ring1);
+		this.rotor2 = getRotor(r2, rot2, ring2);
+		this.rotor3 = getRotor(r3, rot3, ring3);
+		this.reflector = getReflector(0, rotRef, ringRef);
+		this.reflector.setRotation(rotRef).setRingSetting(ringRef)
+				.setConfiguration(Plugboard.seedToReflectorConfiguration(rand));
+	}
+
+	@Override
+	public char encryptChar(char k)
+	{
+		nextState();
+		int x = ((int) k)-65;   //Cast to int and remove Unicode Offset (A=65 in Unicode.)
+		//Encryption
+		//forward direction
+		x = entryWheel.encryptForward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting());
+		x = rotor1.encryptForward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting() + rotor2.getRotation() - rotor2.getRingSetting());
+		x = rotor2.encryptForward(x);
+		x = rotor1.normalize(x - rotor2.getRotation() + rotor2.getRingSetting() + rotor3.getRotation() - rotor3.getRingSetting());
+		x = rotor3.encryptForward(x);
+		x = rotor1.normalize(x - rotor3.getRotation() + rotor3.getRingSetting() + reflector.getRotation() - reflector.getRingSetting());
+		//backward direction
+		x = reflector.encrypt(x);
+		x = rotor1.normalize(x + rotor3.getRotation() - rotor3.getRingSetting() - reflector.getRotation() + reflector.getRingSetting());
+		x = rotor3.encryptBackward(x);
+		x = rotor1.normalize(x + rotor2.getRotation() - rotor2.getRingSetting() - rotor3.getRotation() + rotor3.getRingSetting());
+		x = rotor2.encryptBackward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting() - rotor2.getRotation() + rotor2.getRingSetting());
+		x = rotor1.encryptBackward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting());
+		x = entryWheel.encryptBackward(x);
+		return (char) (x + 65);     //Add Offset again, cast back to char and return
+	}
+
+	@Override
+	public void setState(EnigmaStateBundle state)
+	{
+		this.entryWheel = getEntryWheel(state.getTypeEntryWheel());
+		this.rotor1 = getRotor(state.getTypeRotor1(), state.getRotationRotor1(), state.getRingSettingRotor1());
+		this.rotor2 = getRotor(state.getTypeRotor2(), state.getRotationRotor2(), state.getRingSettingRotor2());
+		this.rotor3 = getRotor(state.getTypeRotor3(), state.getRotationRotor3(), state.getRingSettingRotor3());
+		this.reflector = getReflector(state.getTypeReflector(),
+									  state.getRotationReflector(),
+									  state.getRingSettingReflector())
+				.setConfiguration(state.getConfigurationReflector());
+	}
+
+	@Override
+	public EnigmaStateBundle getState()
+	{
+		EnigmaStateBundle state = new EnigmaStateBundle();
+
+		state.setTypeEntryWheel(entryWheel.getIndex());
+
+		state.setTypeRotor1(rotor1.getIndex());
+		state.setTypeRotor2(rotor2.getIndex());
+		state.setTypeRotor3(rotor3.getIndex());
+
+		state.setRotationRotor1(rotor1.getRotation());
+		state.setRotationRotor2(rotor2.getRotation());
+		state.setRotationRotor3(rotor3.getRotation());
+
+		state.setRingSettingRotor1(rotor1.getRingSetting());
+		state.setRingSettingRotor2(rotor2.getRingSetting());
+		state.setRingSettingRotor3(rotor3.getRingSetting());
+
+		state.setTypeReflector(reflector.getIndex());
+		state.setRotationReflector(reflector.getRotation());
+		state.setRingSettingReflector(reflector.getRingSetting());
+		state.setConfigurationReflector(reflector.getConfiguration());
+
+		return state;
+	}
+
+	@Override
+	public void restoreState(BigInteger s, int protocol_version)
+	{
+		switch (protocol_version)
+		{
+			case 1:
+				int r1 = getValue(s, availableRotors.size());
+				s = removeDigit(s, availableRotors.size());
+				int r2 = getValue(s, availableRotors.size());
+				s = removeDigit(s, availableRotors.size());
+				int r3 = getValue(s, availableRotors.size());
+				s = removeDigit(s, availableRotors.size());
+
+				int rot1 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring1 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rot2 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring2 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rot3 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring3 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rotRef = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ringRef = getValue(s, 26);
+				s = removeDigit(s, 26);
+
+				this.rotor1 = getRotor(r1, rot1, ring1);
+				this.rotor2 = getRotor(r2, rot2, ring2);
+				this.rotor3 = getRotor(r3, rot3, ring3);
+				this.reflector = getReflector(0, rotRef, ringRef);
+				this.reflector.setConfiguration(s);
+				break;
+
+			default: Log.e(MainActivity.APP_ID, "Unsupported protocol version "+protocol_version);
+		}
+
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version) {
+		BigInteger s = Plugboard.configurationToBigInteger(reflector.getConfiguration());
+		s = addDigit(s, reflector.getRingSetting(), 26);
+		s = addDigit(s, reflector.getRotation(), 26);
+		s = addDigit(s, rotor3.getRingSetting(), 26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(), 26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+		s = addDigit(s, 12, 20); //Machine #12
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_K_Swiss_Airforce.java

@@ -0,0 +1,70 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Implementation of the Enigma machine of name K (Switzerland, Airforce)
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_K_Swiss_Airforce extends Enigma_K
+{
+	public Enigma_K_Swiss_Airforce()
+	{
+		super();
+		machineType = "KSA";
+		Log.d(MainActivity.APP_ID, "Created Enigma KSA");
+	}
+
+	@Override
+	protected void establishAvailableParts()
+	{
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_QWERTZ());
+		addAvailableRotor(new Rotor.Rotor_K_Swiss_Airforce_I(0,0));
+		addAvailableRotor(new Rotor.Rotor_K_Swiss_Airforce_II(0,0));
+		addAvailableRotor(new Rotor.Rotor_K_Swiss_Airforce_III(0,0));
+		addAvailableReflector(new Reflector.Reflector_K_G260());
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version)
+	{
+		BigInteger s = BigInteger.valueOf(reflector.getRingSetting());
+		s = addDigit(s, reflector.getRotation(), 26);
+		s = addDigit(s, rotor3.getRingSetting(),26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(),26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+		s = addDigit(s, 9, 20); //Machine #9
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_K_Swiss_Standard.java

@@ -0,0 +1,71 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Implementation of the Enigma machine of name K (Switzerland)
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_K_Swiss_Standard extends Enigma_K
+{
+	public Enigma_K_Swiss_Standard()
+	{
+		super();
+		machineType = "KS";
+		Log.d(MainActivity.APP_ID, "Created Enigma KS");
+	}
+
+	@Override
+	protected void establishAvailableParts()
+	{
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_QWERTZ());
+		addAvailableRotor(new Rotor.Rotor_KSwiss_Standard_I(0,0));
+		addAvailableRotor(new Rotor.Rotor_KSwiss_Standard_II(0,0));
+		addAvailableRotor(new Rotor.Rotor_KSwiss_Standard_III(0,0));
+		addAvailableReflector(new Reflector.Reflector_K_G260());
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version)
+	{
+		BigInteger s = BigInteger.valueOf(reflector.getRingSetting());
+		s = addDigit(s, reflector.getRotation(), 26);
+		s = addDigit(s, rotor3.getRingSetting(),26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(),26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+		s = addDigit(s, 8, 20); //Machine #8
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+		return s;
+	}
+
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_M3.java

@@ -0,0 +1,99 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Plugboard;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Concrete implementation of an enigma machine model M3
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_M3 extends Enigma_I
+{
+	public Enigma_M3()
+	{
+		super();
+		machineType = "M3";
+		Log.d(MainActivity.APP_ID, "Created Enigma M3");
+	}
+
+	@Override
+	protected void establishAvailableParts()
+	{
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_ABCDEF());
+		addAvailableRotor(new Rotor.Rotor_I(0, 0));
+		addAvailableRotor(new Rotor.Rotor_II(0,0));
+		addAvailableRotor(new Rotor.Rotor_III(0,0));
+		addAvailableRotor(new Rotor.Rotor_IV(0,0));
+		addAvailableRotor(new Rotor.Rotor_V(0,0));
+		addAvailableRotor(new Rotor.Rotor_VI(0,0));
+		addAvailableRotor(new Rotor.Rotor_VII(0,0));
+		addAvailableRotor(new Rotor.Rotor_VIII(0,0));
+		addAvailableReflector(new Reflector.Reflector_B());
+		addAvailableReflector(new Reflector.Reflector_C());
+	}
+
+	@Override
+	protected void generateState() {
+		int r1, r2=-1, r3=-1;
+		r1 = rand.nextInt(8);
+		while(r2 == -1 || r2 == r1) r2 = rand.nextInt(8);
+		while(r3 == -1 || r3 == r2 || r3 == r1) r3 = rand.nextInt(8);
+		int ref = rand.nextInt(2);
+
+		int rot1 = rand.nextInt(26);
+		int rot2 = rand.nextInt(26);
+		int rot3 = rand.nextInt(26);
+		int ring1 = rand.nextInt(26);
+		int ring2 = rand.nextInt(26);
+		int ring3 = rand.nextInt(26);
+
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(r1, rot1, ring1);
+		this.rotor2 = getRotor(r2, rot2, ring2);
+		this.rotor3 = getRotor(r3, rot3, ring3);
+		this.reflector = getReflector(ref);
+
+		this.plugboard = new Plugboard();
+		plugboard.setConfiguration(Plugboard.seedToPlugboardConfiguration(rand));
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version) {
+		BigInteger s = Plugboard.configurationToBigInteger(plugboard.getConfiguration());
+		s = addDigit(s, rotor3.getRingSetting(), 26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(), 26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+		s = addDigit(s, reflector.getIndex(), availableReflectors.size());
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+		s = addDigit(s, 1, 20); //Machine #1
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_M4.java

@@ -0,0 +1,320 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+import java.util.ArrayList;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Plugboard;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Concrete Implementation of the Enigma Machine name M4 of the german Kriegsmarine
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_M4 extends Enigma
+{
+	private ArrayList<Rotor> availableThinRotors;
+	private EntryWheel entryWheel;
+	private Rotor rotor1;
+	private Rotor rotor2;
+	private Rotor rotor3;
+
+	private Rotor rotor4;
+
+	private Reflector reflector;
+
+	private Plugboard plugboard;
+
+	public Enigma_M4()
+	{
+		super();
+		machineType = "M4";
+		Log.d(MainActivity.APP_ID, "Created Enigma M4");
+	}
+
+	private void addAvailableThinRotor(Rotor r)
+	{
+		if(availableThinRotors == null) availableThinRotors = new ArrayList<>();
+		availableThinRotors.add(availableThinRotors.size(), r.setIndex(availableThinRotors.size()));
+	}
+
+	private Rotor getThinRotor(int index)
+	{
+		if(availableThinRotors == null || availableThinRotors.size() == 0) return null;
+		return availableThinRotors.get(index % availableThinRotors.size()).getInstance();
+	}
+
+	private Rotor getThinRotor(int index, int rotation, int ringSettings)
+	{
+		Rotor r = getThinRotor(index);
+		if(r == null) return null;
+		return r.setRotation(rotation).setRingSetting(ringSettings);
+	}
+
+	@Override
+	protected void establishAvailableParts()
+	{
+		Log.d(MainActivity.APP_ID, "Established");
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_ABCDEF());
+		addAvailableRotor(new Rotor.Rotor_I(0, 0));
+		addAvailableRotor(new Rotor.Rotor_II(0,0));
+		addAvailableRotor(new Rotor.Rotor_III(0,0));
+		addAvailableRotor(new Rotor.Rotor_IV(0,0));
+		addAvailableRotor(new Rotor.Rotor_V(0,0));
+		addAvailableRotor(new Rotor.Rotor_VI(0,0));
+		addAvailableRotor(new Rotor.Rotor_VII(0, 0));
+		addAvailableRotor(new Rotor.Rotor_VIII(0,0));
+		addAvailableThinRotor(new Rotor.Rotor_M4_Beta(0, 0));
+		addAvailableThinRotor(new Rotor.Rotor_M4_Gamma(0, 0));
+		addAvailableReflector(new Reflector.Reflector_Thin_B());
+		addAvailableReflector(new Reflector.ReflectorThinC());
+	}
+
+	@Override
+	public void initialize()
+	{
+		Log.d(MainActivity.APP_ID, "Initialized");
+		this.plugboard = new Plugboard();
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(0, 0, 0);
+		this.rotor2 = getRotor(1, 0, 0);
+		this.rotor3 = getRotor(2, 0, 0);
+		this.rotor4 = getThinRotor(0, 0, 0);
+		this.reflector = getReflector(0);
+	}
+
+	@Override
+	/**
+	 * Set the enigma into the next mechanical state.
+	 * This rotates the first rotor and eventually also the second/third.
+	 * Also this method handles the anomaly in case it should happen.
+	 */
+	public void nextState()
+	{
+		//Rotate rotors
+		rotor1.rotate();
+		//Eventually turn next rotor (usual turnOver or anomaly)
+		if (rotor1.isAtTurnoverPosition() || this.doAnomaly)
+		{
+			rotor2.rotate();
+			//Set doAnomaly for next call of encryptChar
+			this.doAnomaly = rotor2.doubleTurnAnomaly();
+			//Eventually rotate next rotor
+			if (rotor2.isAtTurnoverPosition())
+			{
+				rotor3.rotate();
+			}
+		}
+	}
+
+	@Override
+	protected void generateState() {
+		int r1, r2=-1, r3=-1;
+		int r4;
+		int ref;
+		r1 = rand.nextInt(8);
+		while(r2 == -1 || r2 == r1) r2 = rand.nextInt(8);
+		while(r3 == -1 || r3 == r2 || r3 == r1) r3 = rand.nextInt(8);
+		r4 = rand.nextInt(2);
+		ref = rand.nextInt(2);
+
+		int rot1 = rand.nextInt(26);
+		int rot2 = rand.nextInt(26);
+		int rot3 = rand.nextInt(26);
+		int rot4 = rand.nextInt(26);
+		int rotRef = rand.nextInt(26);
+		int ring1 = rand.nextInt(26);
+		int ring2 = rand.nextInt(26);
+		int ring3 = rand.nextInt(26);
+		int ring4 = rand.nextInt(26);
+		int ringRef = rand.nextInt(26);
+
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(r1, rot1, ring1);
+		this.rotor2 = getRotor(r2, rot2, ring2);
+		this.rotor3 = getRotor(r3, rot3, ring3);
+		this.rotor4 = getThinRotor(r4, rot4, ring4);
+
+		this.reflector = getReflector(ref, rotRef, ringRef);
+
+		this.plugboard = new Plugboard();
+		this.plugboard.setConfiguration(Plugboard.seedToPlugboardConfiguration(rand));
+	}
+
+	@Override
+	/**
+	 * Substitute char k by sending the signal through the enigma.
+	 * The signal passes the plugboard, the rotors and returns back after going through the
+	 * reflector wheel.
+	 *
+	 * @param k input char
+	 * @return substituted output char
+	 */
+	public char encryptChar(char k)
+	{
+		nextState();            //Rotate rotors
+		int x = ((int) k)-65;   //Cast to int and remove Unicode Offset (A=65 in Unicode.)
+		//Encryption
+		//forward direction
+		x = plugboard.encrypt(x);
+		x = entryWheel.encryptForward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting());
+		x = rotor1.encryptForward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting() + rotor2.getRotation() - rotor2.getRingSetting());
+		x = rotor2.encryptForward(x);
+		x = rotor1.normalize(x - rotor2.getRotation() + rotor2.getRingSetting() + rotor3.getRotation() - rotor3.getRingSetting());
+		x = rotor3.encryptForward(x);
+		x = rotor1.normalize(x - rotor3.getRotation() + rotor3.getRingSetting() + rotor4.getRotation() - rotor4.getRingSetting());
+		x = rotor4.encryptForward(x);
+		x = rotor1.normalize(x - rotor4.getRotation() + rotor4.getRingSetting());
+		//backward direction
+		x = reflector.encrypt(x);
+		x = rotor1.normalize(x + rotor4.getRotation() - rotor4.getRingSetting());
+		x = rotor4.encryptBackward(x);
+		x = rotor1.normalize(x + rotor3.getRotation() - rotor3.getRingSetting() - rotor4.getRotation() + rotor4.getRingSetting());
+		x = rotor3.encryptBackward(x);
+		x = rotor1.normalize(x + rotor2.getRotation() - rotor2.getRingSetting() - rotor3.getRotation() + rotor3.getRingSetting());
+		x = rotor2.encryptBackward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting() - rotor2.getRotation() + rotor2.getRingSetting());
+		x = rotor1.encryptBackward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting());
+		x = entryWheel.encryptBackward(x);
+		x = plugboard.encrypt(x);
+		return (char) (x + 65);     //Add Offset again and cast back to char
+	}
+
+	@Override
+	public void setState(EnigmaStateBundle state)
+	{
+		rotor1 = getRotor(state.getTypeRotor1(), state.getRotationRotor1(), state.getRingSettingRotor1());
+		rotor2 = getRotor(state.getTypeRotor2(), state.getRotationRotor2(), state.getRingSettingRotor2());
+		rotor3 = getRotor(state.getTypeRotor3(), state.getRotationRotor3(), state.getRingSettingRotor3());
+		rotor4 = getThinRotor(state.getTypeRotor4(), state.getRotationRotor4(), state.getRingSettingRotor4());
+		reflector = getReflector(state.getTypeReflector());
+		plugboard.setConfiguration(state.getConfigurationPlugboard());
+
+	}
+
+	@Override
+	public EnigmaStateBundle getState()
+	{
+		EnigmaStateBundle state = new EnigmaStateBundle();
+		state.setTypeEntryWheel(entryWheel.getIndex());
+
+		state.setTypeRotor1(rotor1.getIndex());
+		state.setTypeRotor2(rotor2.getIndex());
+		state.setTypeRotor3(rotor3.getIndex());
+		state.setTypeRotor4(rotor4.getIndex());
+
+		state.setRotationRotor1(rotor1.getRotation());
+		state.setRotationRotor2(rotor2.getRotation());
+		state.setRotationRotor3(rotor3.getRotation());
+		state.setRotationRotor4(rotor4.getRotation());
+
+		state.setRingSettingRotor1(rotor1.getRingSetting());
+		state.setRingSettingRotor2(rotor2.getRingSetting());
+		state.setRingSettingRotor3(rotor3.getRingSetting());
+		state.setRingSettingRotor4(rotor4.getRingSetting());
+
+		state.setTypeReflector(reflector.getIndex());
+
+		state.setConfigurationPlugboard(plugboard.getConfiguration());
+
+		return state;
+	}
+
+	@Override
+	public void restoreState(BigInteger s, int protocol_version)
+	{
+		switch (protocol_version)
+		{
+			case 1:
+				int r1 = getValue(s, availableRotors.size());
+				s = removeDigit(s, availableRotors.size());
+				int r2 = getValue(s, availableRotors.size());
+				s = removeDigit(s,availableRotors.size());
+				int r3 = getValue(s, availableRotors.size());
+				s = removeDigit(s,availableRotors.size());
+				int r4 = getValue(s, availableThinRotors.size());
+				s = removeDigit(s,availableThinRotors.size());
+				int ref = getValue(s, availableReflectors.size());
+				s = removeDigit(s,availableReflectors.size());
+
+				int rot1 = getValue(s, 26);
+				s = removeDigit(s,26);
+				int ring1 = getValue(s, 26);
+				s = removeDigit(s,26);
+				int rot2 = getValue(s, 26);
+				s = removeDigit(s,26);
+				int ring2 = getValue(s, 26);
+				s = removeDigit(s,26);
+				int rot3 = getValue(s, 26);
+				s = removeDigit(s,26);
+				int ring3 = getValue(s, 26);
+				s = removeDigit(s,26);
+				int rot4 = getValue(s, 26);
+				s = removeDigit(s,26);
+				int ring4 = getValue(s, 26);
+				s = removeDigit(s,26);
+				int rotRef = getValue(s, 26);
+				s = removeDigit(s,26);
+				int ringRef = getValue(s, 26);
+				s = removeDigit(s, 26);
+
+				this.rotor1 = getRotor(r1, rot1, ring1);
+				this.rotor2 = getRotor(r2, rot2, ring2);
+				this.rotor3 = getRotor(r3, rot3, ring3);
+				this.rotor4 = getThinRotor(r4, rot4, ring4);
+				this.reflector = getReflector(ref, rotRef, ringRef);
+				this.plugboard = new Plugboard();
+				plugboard.setConfiguration(s);
+				break;
+
+			default: Log.e(MainActivity.APP_ID, "Unsupported protocol version "+protocol_version);
+		}
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version) {
+		BigInteger s = Plugboard.configurationToBigInteger(plugboard.getConfiguration());
+		s = addDigit(s, reflector.getRingSetting(), 26);
+		s = addDigit(s, reflector.getRotation(), 26);
+		s = addDigit(s, rotor4.getRingSetting(), 26);
+		s = addDigit(s, rotor4.getRotation(), 26);
+		s = addDigit(s, rotor3.getRingSetting(), 26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(), 26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, reflector.getIndex(), availableReflectors.size());
+		s = addDigit(s, rotor4.getIndex(), availableThinRotors.size());
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+		s = addDigit(s, 2, 20);
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_R.java

@@ -0,0 +1,231 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Implementation of the Enigma machine of name R ("Rocket", Reichsbahn)
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_R extends Enigma
+{
+	private EntryWheel entryWheel;
+	private Rotor rotor1;
+	private Rotor rotor2;
+	private Rotor rotor3;
+
+	private Reflector reflector;
+
+	public Enigma_R()
+	{
+		super();
+		machineType = "R";
+		Log.d(MainActivity.APP_ID, "Created Enigma R");
+	}
+
+	@Override
+	protected void establishAvailableParts() {
+		addAvailableEntryWheel(new EntryWheel.EntryWheel_QWERTZ());
+		addAvailableRotor(new Rotor.Rotor_R_I(0, 0));
+		addAvailableRotor(new Rotor.Rotor_R_II(0,0));
+		addAvailableRotor(new Rotor.Rotor_R_III(0,0));
+		addAvailableReflector(new Reflector.Reflector_R());
+
+	}
+
+	@Override
+	public void initialize()
+	{
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(0);
+		this.rotor2 = getRotor(1);
+		this.rotor3 = getRotor(2);
+		this.reflector = getReflector(0);
+	}
+
+	@Override
+	public void nextState()
+	{
+		rotor1.rotate();
+		if (rotor1.isAtTurnoverPosition() || this.doAnomaly)
+		{
+			rotor2.rotate();
+			this.doAnomaly = rotor2.doubleTurnAnomaly();
+			if (rotor2.isAtTurnoverPosition())
+			{
+				rotor3.rotate();
+			}
+		}
+	}
+
+	@Override
+	protected void generateState()
+	{
+		int r1, r2=-1, r3;
+		r1 = rand.nextInt(3);
+		while(r2 == -1 || r2 == r1) r2 = rand.nextInt(3);
+		r3 = 3 - r1 - r2;
+
+		int rot1 = rand.nextInt(26);
+		int rot2 = rand.nextInt(26);
+		int rot3 = rand.nextInt(26);
+		int rotRef = rand.nextInt(26);
+		int ring1 = rand.nextInt(26);
+		int ring2 = rand.nextInt(26);
+		int ring3 = rand.nextInt(26);
+		int ringRef = rand.nextInt(26);
+
+		this.entryWheel = getEntryWheel(0);
+		this.rotor1 = getRotor(r1, rot1, ring1);
+		this.rotor2 = getRotor(r2, rot2, ring2);
+		this.rotor3 = getRotor(r3, rot3, ring3);
+		this.reflector = getReflector(0, rotRef, ringRef);
+	}
+
+	@Override
+	public char encryptChar(char k) {
+		nextState();
+		int x = ((int) k)-65;   //Cast to int and remove Unicode Offset (A=65 in Unicode.)
+		//Encryption
+		//forward direction
+		x = entryWheel.encryptForward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting());
+		x = rotor1.encryptForward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting() + rotor2.getRotation() - rotor2.getRingSetting());
+		x = rotor2.encryptForward(x);
+		x = rotor1.normalize(x - rotor2.getRotation() + rotor2.getRingSetting() + rotor3.getRotation() - rotor3.getRingSetting());
+		x = rotor3.encryptForward(x);
+		x = rotor1.normalize(x - rotor3.getRotation() + rotor3.getRingSetting() + reflector.getRotation() - reflector.getRingSetting());
+		//backward direction
+		x = reflector.encrypt(x);
+		x = rotor1.normalize(x + rotor3.getRotation() - rotor3.getRingSetting() - reflector.getRotation() + reflector.getRingSetting());
+		x = rotor3.encryptBackward(x);
+		x = rotor1.normalize(x + rotor2.getRotation() - rotor2.getRingSetting() - rotor3.getRotation() + rotor3.getRingSetting());
+		x = rotor2.encryptBackward(x);
+		x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting() - rotor2.getRotation() + rotor2.getRingSetting());
+		x = rotor1.encryptBackward(x);
+		x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting());
+		x = entryWheel.encryptBackward(x);
+		return (char) (x + 65);     //Add Offset again, cast back to char and return
+	}
+
+	@Override
+	public void setState(EnigmaStateBundle state)
+	{
+		this.entryWheel = getEntryWheel(state.getTypeEntryWheel());
+		this.rotor1 = getRotor(state.getTypeRotor1(), state.getRotationRotor1(), state.getRingSettingRotor1());
+		this.rotor2 = getRotor(state.getTypeRotor2(), state.getRotationRotor2(), state.getRingSettingRotor2());
+		this.rotor3 = getRotor(state.getTypeRotor3(), state.getRotationRotor3(), state.getRingSettingRotor3());
+		this.reflector = getReflector(state.getTypeReflector(), state.getRotationReflector(), state.getRingSettingReflector());
+	}
+
+	@Override
+	public EnigmaStateBundle getState() {
+		EnigmaStateBundle state = new EnigmaStateBundle();
+
+		state.setTypeEntryWheel(entryWheel.getIndex());
+
+		state.setTypeRotor1(rotor1.getIndex());
+		state.setTypeRotor2(rotor2.getIndex());
+		state.setTypeRotor3(rotor3.getIndex());
+
+		state.setRotationRotor1(rotor1.getRotation());
+		state.setRotationRotor2(rotor2.getRotation());
+		state.setRotationRotor3(rotor3.getRotation());
+
+		state.setRingSettingRotor1(rotor1.getRingSetting());
+		state.setRingSettingRotor2(rotor2.getRingSetting());
+		state.setRingSettingRotor3(rotor3.getRingSetting());
+
+		state.setTypeReflector(reflector.getIndex());
+		state.setRotationReflector(reflector.getRotation());
+		state.setRingSettingReflector(reflector.getRingSetting());
+
+		return state;
+	}
+
+	@Override
+	public void restoreState(BigInteger s, int protocol_version)
+	{
+		switch (protocol_version)
+		{
+			case 1:
+				int r1 = getValue(s,availableRotors.size());
+				s = removeDigit(s,availableRotors.size());
+				int r2 = getValue(s,availableRotors.size());
+				s = removeDigit(s,availableRotors.size());
+				int r3 = getValue(s,availableRotors.size());
+				s = removeDigit(s,availableRotors.size());
+
+				int rot1 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring1 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rot2 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring2 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rot3 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ring3 = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int rotRef = getValue(s, 26);
+				s = removeDigit(s, 26);
+				int ringRef = getValue(s, 26);
+				s = removeDigit(s, 26);
+
+				this.entryWheel = getEntryWheel(0);
+				this.rotor1 = getRotor(r1, rot1, ring1);
+				this.rotor2 = getRotor(r2, rot2, ring2);
+				this.rotor3 = getRotor(r3, rot3, ring3);
+				this.reflector = getReflector(0, rotRef, ringRef);
+				break;
+
+			default: Log.e(MainActivity.APP_ID, "Unsupported protocol version "+protocol_version);
+		}
+
+	}
+
+	@Override
+	public BigInteger getEncodedState(int protocol_version)
+	{
+		BigInteger s = BigInteger.valueOf(reflector.getRingSetting());
+		s = addDigit(s, reflector.getRotation(), 26);
+
+		s = addDigit(s, rotor3.getRingSetting(),26);
+		s = addDigit(s, rotor3.getRotation(), 26);
+		s = addDigit(s, rotor2.getRingSetting(),26);
+		s = addDigit(s, rotor2.getRotation(), 26);
+		s = addDigit(s, rotor1.getRingSetting(), 26);
+		s = addDigit(s, rotor1.getRotation(), 26);
+
+		s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+		s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+		s = addDigit(s, 10, 20); //Machine #10
+		s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+		return s;
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/Enigma_T.java

@@ -0,0 +1,228 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.parts.EntryWheel;
+import de.vanitasvitae.enigmandroid.enigma.parts.Reflector;
+import de.vanitasvitae.enigmandroid.enigma.parts.Rotor;
+
+/**
+ * Implementation of the Enigma machine of name T Tirpitz
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Enigma_T extends Enigma
+{
+    private EntryWheel entryWheel;
+    private Rotor rotor1;
+    private Rotor rotor2;
+    private Rotor rotor3;
+    private Reflector reflector;
+
+    public Enigma_T()
+    {
+        super();
+        machineType = "T";
+        Log.d(MainActivity.APP_ID, "Created Enigma T");
+    }
+
+    @Override
+    protected void establishAvailableParts() {
+        addAvailableEntryWheel(new EntryWheel.EntryWheel_T());
+        addAvailableRotor(new Rotor.Rotor_T_I(0, 0));
+        addAvailableRotor(new Rotor.Rotor_T_II(0,0));
+        addAvailableRotor(new Rotor.Rotor_T_III(0,0));
+        addAvailableRotor(new Rotor.Rotor_T_IV(0,0));
+        addAvailableRotor(new Rotor.Rotor_T_V(0,0));
+        addAvailableRotor(new Rotor.Rotor_T_VI(0,0));
+        addAvailableRotor(new Rotor.Rotor_T_VII(0,0));
+        addAvailableRotor(new Rotor.Rotor_T_VIII(0,0));
+        addAvailableReflector(new Reflector.ReflectorEnigma_T());
+    }
+
+    @Override
+    public void initialize() {
+        this.entryWheel = getEntryWheel(0);
+        this.rotor1 = getRotor(0);
+        this.rotor2 = getRotor(1);
+        this.rotor3 = getRotor(2);
+        this.reflector = getReflector(0);
+    }
+
+    @Override
+    public void nextState()
+    {
+        rotor1.rotate();
+        if (rotor1.isAtTurnoverPosition() || this.doAnomaly)
+        {
+            rotor2.rotate();
+            this.doAnomaly = rotor2.doubleTurnAnomaly();
+            if (rotor2.isAtTurnoverPosition())
+            {
+                rotor3.rotate();
+            }
+        }
+    }
+
+    @Override
+    protected void generateState() {
+        int r1, r2=-1, r3=-1;
+        r1 = rand.nextInt(8);
+        while(r2 == -1 || r2 == r1) r2 = rand.nextInt(8);
+        while(r3 == -1 || r3 == r2 || r3 == r1) r3 = rand.nextInt(8);
+
+        int rot1 = rand.nextInt(26);
+        int rot2 = rand.nextInt(26);
+        int rot3 = rand.nextInt(26);
+        int rotRef = rand.nextInt(26);
+        int ring1 = rand.nextInt(26);
+        int ring2 = rand.nextInt(26);
+        int ring3 = rand.nextInt(26);
+        int ringRef = rand.nextInt(26);
+
+        this.entryWheel = getEntryWheel(0);
+        this.rotor1 = getRotor(r1, rot1, ring1);
+        this.rotor2 = getRotor(r2, rot2, ring2);
+        this.rotor3 = getRotor(r3, rot3, ring3);
+        this.reflector = getReflector(0, rotRef, ringRef);
+    }
+
+    @Override
+    public char encryptChar(char k) {
+        nextState();
+        int x = ((int) k)-65;   //Cast to int and remove Unicode Offset (A=65 in Unicode.)
+        //Encryption
+        //forward direction
+        x = entryWheel.encryptForward(x);
+        x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting());
+        x = rotor1.encryptForward(x);
+        x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting() + rotor2.getRotation() - rotor2.getRingSetting());
+        x = rotor2.encryptForward(x);
+        x = rotor1.normalize(x - rotor2.getRotation() + rotor2.getRingSetting() + rotor3.getRotation() - rotor3.getRingSetting());
+        x = rotor3.encryptForward(x);
+        x = rotor1.normalize(x - rotor3.getRotation() + rotor3.getRingSetting() + reflector.getRotation() - reflector.getRingSetting());
+        //backward direction
+        x = reflector.encrypt(x);
+        x = rotor1.normalize(x + rotor3.getRotation() - rotor3.getRingSetting() - reflector.getRotation() + reflector.getRingSetting());
+        x = rotor3.encryptBackward(x);
+        x = rotor1.normalize(x + rotor2.getRotation() - rotor2.getRingSetting() - rotor3.getRotation() + rotor3.getRingSetting());
+        x = rotor2.encryptBackward(x);
+        x = rotor1.normalize(x + rotor1.getRotation() - rotor1.getRingSetting() - rotor2.getRotation() + rotor2.getRingSetting());
+        x = rotor1.encryptBackward(x);
+        x = rotor1.normalize(x - rotor1.getRotation() + rotor1.getRingSetting());
+        x = entryWheel.encryptBackward(x);
+        return (char) (x + 65);     //Add Offset again, cast back to char and return
+    }
+
+    @Override
+    public void setState(EnigmaStateBundle state) {
+        this.entryWheel = getEntryWheel(0);
+        this.rotor1 = getRotor(state.getTypeRotor1(), state.getRotationRotor1(), state.getRingSettingRotor1());
+        this.rotor2 = getRotor(state.getTypeRotor2(), state.getRotationRotor2(), state.getRingSettingRotor2());
+        this.rotor3 = getRotor(state.getTypeRotor3(), state.getRotationRotor3(), state.getRingSettingRotor3());
+        this.reflector = getReflector(state.getTypeReflector(), state.getRotationReflector(), state.getRingSettingReflector());
+    }
+
+    @Override
+    public EnigmaStateBundle getState()
+    {
+        EnigmaStateBundle state = new EnigmaStateBundle();
+
+        state.setTypeRotor1(rotor1.getIndex());
+        state.setTypeRotor2(rotor2.getIndex());
+        state.setTypeRotor3(rotor3.getIndex());
+
+        state.setRotationRotor1(rotor1.getRotation());
+        state.setRotationRotor2(rotor2.getRotation());
+        state.setRotationRotor3(rotor3.getRotation());
+
+        state.setRingSettingRotor1(rotor1.getRingSetting());
+        state.setRingSettingRotor2(rotor2.getRingSetting());
+        state.setRingSettingRotor3(rotor3.getRingSetting());
+
+        state.setTypeReflector(reflector.getIndex());
+        state.setRotationReflector(reflector.getRotation());
+        state.setRingSettingReflector(reflector.getRingSetting());
+        state.setTypeEntryWheel(entryWheel.getIndex());
+
+        return state;
+    }
+
+    @Override
+    public void restoreState(BigInteger s, int protocol_version)
+    {
+        switch (protocol_version)
+        {
+            case 1:
+                int r1 = getValue(s,availableRotors.size());
+                s = removeDigit(s,availableRotors.size());
+                int r2 = getValue(s,availableRotors.size());
+                s = removeDigit(s,availableRotors.size());
+                int r3 = getValue(s,availableRotors.size());
+                s = removeDigit(s,availableRotors.size());
+
+                int rot1 = getValue(s,26);
+                s = removeDigit(s,26);
+                int ring1 = getValue(s,26);
+                s = removeDigit(s,26);
+                int rot2 = getValue(s,26);
+                s = removeDigit(s,26);
+                int ring2 = getValue(s,26);
+                s = removeDigit(s,26);
+                int rot3 = getValue(s,26);
+                s = removeDigit(s,26);
+                int ring3 = getValue(s,26);
+                s = removeDigit(s,26);
+                int rotRef = getValue(s,26);
+                s = removeDigit(s, 26);
+                int ringRef = getValue(s,26);
+
+                this.rotor1 = getRotor(r1, rot1, ring1);
+                this.rotor2 = getRotor(r2, rot2, ring2);
+                this.rotor3 = getRotor(r3, rot3, ring3);
+                this.reflector = getReflector(0, rotRef, ringRef);
+                break;
+
+            default: Log.e(MainActivity.APP_ID, "Unsupported protocol version "+protocol_version);
+        }
+
+    }
+
+    @Override
+    public BigInteger getEncodedState(int protocol_version)
+    {
+        BigInteger s = BigInteger.valueOf(reflector.getRingSetting());
+        s = addDigit(s, reflector.getRotation(), 26);
+        s = addDigit(s, rotor3.getRingSetting(),26);
+        s = addDigit(s, rotor3.getRotation(), 26);
+        s = addDigit(s, rotor2.getRingSetting(),26);
+        s = addDigit(s, rotor2.getRotation(), 26);
+        s = addDigit(s, rotor1.getRingSetting(), 26);
+        s = addDigit(s, rotor1.getRotation(), 26);
+
+        s = addDigit(s, rotor3.getIndex(), availableRotors.size());
+        s = addDigit(s, rotor2.getIndex(), availableRotors.size());
+        s = addDigit(s, rotor1.getIndex(), availableRotors.size());
+
+        s = addDigit(s, 11, 20); //Machine #11
+        s = addDigit(s, protocol_version, MainActivity.max_protocol_version);
+
+        return s;
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/inputPreparer/EditTextAdapter.java

@@ -0,0 +1,119 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma.inputPreparer;
+
+import android.widget.EditText;
+
+/**
+ * Adapter-like connector between text fields and string-outputting-whatever blah
+ * Use this to modify the way strings get displayed without modifying the string itself.
+ */
+public abstract class EditTextAdapter
+{
+    EditText editText;
+    String content;
+
+    EditTextAdapter(EditText editText)
+    {
+        this.editText = editText;
+    }
+
+    /**
+     * Returns the unmodified text
+     * @return content
+     */
+    public String getText()
+    {
+        if(editText.getText().length() != 0)
+            return content;
+        else return content = "";
+    }
+
+    public String getModifiedText()
+    {
+        return editText.getText().toString();
+    }
+
+    /**
+     * Set the text to both the content and the editText without modifying it
+     * @param text text
+     */
+    public void setRawText(String text)
+    {
+        this.content = text;
+        this.editText.setText(text);
+    }
+
+    /**
+     * This method needs to be overwritten by the programmer.
+     * The coder has to make sure, content gets set to text and also that the editText element
+     * gets updated with the modified text
+     * @param text text
+     */
+    public abstract void setText(String text);
+
+    public static EditTextAdapter createEditTextAdapter(EditText editText, String type)
+    {
+        switch (type)
+        {
+            case "4": return new EditTextAdapterGap(editText, 4);
+            case "5": return new EditTextAdapterGap(editText, 5);
+            case "6": return new EditTextAdapterGap(editText, 6);
+            case "no": return new EditTextAdapterNoGap(editText);
+            default: return new EditTextAdapterNoGap(editText);
+        }
+    }
+
+    public static class EditTextAdapterNoGap extends  EditTextAdapter
+    {
+        public EditTextAdapterNoGap(EditText editText)
+        {
+            super(editText);
+        }
+
+        @Override
+        public void setText(String text)
+        {
+            this.content = text;
+            this.editText.setText(text);
+        }
+    }
+
+    public static class EditTextAdapterGap extends EditTextAdapter
+    {
+        int blockSize;
+        public EditTextAdapterGap(EditText editText, int blockSize)
+        {
+            super(editText);
+            this.blockSize = blockSize;
+        }
+
+        @Override
+        public void setText(String text)
+        {
+            this.content = text;
+            String out = "";
+            int i;
+            for(i=0; i<text.length()/blockSize; i++)
+            {
+                out = out + text.substring(i*blockSize, (i+1)*blockSize);
+                out = out + " ";
+            }
+            out = out + text.substring(i*blockSize);
+            this.editText.setText(out);
+        }
+    }
+
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/inputPreparer/InputPreparer.java

@@ -0,0 +1,253 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma.inputPreparer;
+
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.SettingsActivity;
+
+/**
+ * Preparer class that prepares input text to only consist of [A..Z]
+ * Copyright (C) 2015  Paul Schaub
+ */
+public abstract class InputPreparer {
+    InputPreparer child;
+
+    public String prepareString(String in) {
+        if (child != null)
+            return child.prepareString(this.prepare(in));
+        else
+            return prepare(in);
+    }
+
+    protected abstract String prepare(String input);
+
+    public static InputPreparer createInputPreparer()
+    {
+        MainActivity main = (MainActivity) MainActivity.ActivitySingleton.getInstance().getActivity();
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(main);
+
+        boolean replaceSpecialChars = sharedPreferences.getBoolean(SettingsActivity.PREF_REPLACE_SPECIAL_CHARACTERS, true);
+        String num_lang = sharedPreferences.getString(SettingsActivity.PREF_NUMERIC_LANGUAGE, main.getResources().
+                getStringArray(R.array.pref_alias_numeric_spelling_language)[0]);
+        InputPreparer inPrep = new RemoveIllegalCharacters();
+        if(replaceSpecialChars) inPrep = new ReplaceSpecialCharacters(inPrep);
+        switch (num_lang)
+        {
+            case "de": inPrep = new ReplaceNumbersGerman(inPrep);
+                break;
+            case "en": inPrep = new ReplaceNumbersEnglish(inPrep);
+                break;
+            case "fr": inPrep = new ReplaceNumbersFrench(inPrep);
+                break;
+			case "sp": inPrep = new ReplaceNumbersSpanish(inPrep);
+				break;
+			case "it": inPrep = new ReplaceNumbersItalian(inPrep);
+				break;
+            default:
+                break;
+        }
+        return inPrep;
+    }
+
+    public static class ReplaceSpecialCharacters extends InputPreparer {
+// --Commented out by Inspection START (07.11.15 19:47):
+//        public ReplaceSpecialCharacters() {
+//            this.child = null;
+//        }
+// --Commented out by Inspection STOP (07.11.15 19:47)
+
+        public ReplaceSpecialCharacters(InputPreparer child) {
+            this.child = child;
+        }
+
+        protected String prepare(String input) {
+            input = input.toUpperCase();
+            return input.replace("Ä", "AE").replace("Ö", "OE").replace("Ü", "UE").replace("ß", "SS").replace(" ","");
+        }
+    }
+
+    /**
+     * Concrete implementation of a german InputPreparer
+     */
+    public static class ReplaceNumbersGerman extends InputPreparer {
+// --Commented out by Inspection START (07.11.15 19:47):
+//        public ReplaceNumbersGerman() {
+//            this.child = null;
+//        }
+// --Commented out by Inspection STOP (07.11.15 19:47)
+
+        public ReplaceNumbersGerman(InputPreparer child) {
+            this.child = child;
+        }
+
+        protected String prepare(String input) {
+            input = input.replace("0", "NULL")
+                    .replace("1", "EINS")
+                    .replace("2", "ZWEI")
+                    .replace("3", "DREI")
+                    .replace("4", "VIER")
+                    .replace("5", "FUENF")
+                    .replace("6", "SECHS")
+                    .replace("7", "SIEBEN")
+                    .replace("8", "ACHT")
+                    .replace("9", "NEUN");
+            return input;
+        }
+    }
+
+    /**
+     * Concrete implementation of a french InputPreparer
+     */
+    public static class ReplaceNumbersFrench extends InputPreparer {
+// --Commented out by Inspection START (07.11.15 19:47):
+//        public ReplaceNumbersFrench() {
+//            this.child = null;
+//        }
+// --Commented out by Inspection STOP (07.11.15 19:47)
+
+        public ReplaceNumbersFrench(InputPreparer child) {
+            this.child = child;
+        }
+
+        protected String prepare(String input) {
+            input = input.replace("0", "ZERO")
+                    .replace("1", "UN")
+                    .replace("2", "DEUX")
+                    .replace("3", "TROIS")
+                    .replace("4", "QUATRE")
+                    .replace("5", "CINQ")
+                    .replace("6", "SIX")
+                    .replace("7", "SEPT")
+                    .replace("8", "HUIT")
+                    .replace("9", "NEUF");
+            return input;
+        }
+    }
+
+    /**
+     * Concrete implementation of an english InputPreparer
+     */
+    public static class ReplaceNumbersEnglish extends InputPreparer {
+// --Commented out by Inspection START (07.11.15 19:47):
+//        public ReplaceNumbersEnglish() {
+//            this.child = null;
+//        }
+// --Commented out by Inspection STOP (07.11.15 19:47)
+
+        public ReplaceNumbersEnglish(InputPreparer child) {
+            this.child = child;
+        }
+
+        protected String prepare(String input) {
+            input = input.replace("0", "ZERO")
+                    .replace("1", "ONE")
+                    .replace("2", "TWO")
+                    .replace("3", "THREE")
+                    .replace("4", "FOUR")
+                    .replace("5", "FIVE")
+                    .replace("6", "SIX")
+                    .replace("7", "SEVEN")
+                    .replace("8", "EIGHT")
+                    .replace("9", "NINE");
+            return input;
+        }
+    }
+
+    /**
+     * Concrete implementation of a spanish InputPreparer
+     */
+    public static class ReplaceNumbersSpanish extends InputPreparer {
+// --Commented out by Inspection START (07.11.15 19:47):
+//        public ReplaceNumbersSpanish() {
+//            this.child = null;
+//        }
+// --Commented out by Inspection STOP (07.11.15 19:47)
+
+        public ReplaceNumbersSpanish(InputPreparer child) {
+            this.child = child;
+        }
+
+        protected String prepare(String input) {
+            input = input.replace("0", "CERO")
+                    .replace("1", "UNO")
+                    .replace("2", "DOS")
+                    .replace("3", "TRES")
+                    .replace("4", "CUATRO")
+                    .replace("5", "CINCO")
+                    .replace("6", "SEIS")
+                    .replace("7", "SIETE")
+                    .replace("8", "OCHO")
+                    .replace("9", "NUEVE");
+            return input;
+        }
+    }
+
+	/**
+	 * Concrete implementation of a spanish InputPreparer
+	 */
+	public static class ReplaceNumbersItalian extends InputPreparer {
+// --Commented out by Inspection START (07.11.15 19:47):
+//		public ReplaceNumbersItalian() {
+//			this.child = null;
+//		}
+// --Commented out by Inspection STOP (07.11.15 19:47)
+
+		public ReplaceNumbersItalian(InputPreparer child) {
+			this.child = child;
+		}
+
+		protected String prepare(String input) {
+			input = input.replace("0", "ZERO")
+					.replace("1", "UNO")
+					.replace("2", "DUE")
+					.replace("3", "TRE")
+					.replace("4", "QUATTRO")
+					.replace("5", "CINQUE")
+					.replace("6", "SEI")
+					.replace("7", "SETTE")
+					.replace("8", "OTTO")
+					.replace("9", "NOVE");
+			return input;
+		}
+	}
+
+    /**
+     * "Final Stage" of Input preparing. This should always be called last
+     * (choose this as the inner most capsule of InputPreparers)
+     * This cant have child InputPreparers.
+     * This Input preparer removes all characters from the string besides A..Z
+     */
+    public static class RemoveIllegalCharacters extends InputPreparer
+    {
+        public RemoveIllegalCharacters()
+        {
+            this.child = null;
+        }
+
+        protected String prepare(String in)
+        {
+            String out = "";
+            for(char c : in.toUpperCase().toCharArray())
+            {
+                if(c>=65 && c<=90) out = out+c;
+            }
+            return out;
+        }
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/parts/EntryWheel.java

@@ -0,0 +1,135 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma.parts;
+
+/**
+ * Implementation of several EntryWheels
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class EntryWheel
+{
+    private final int type;
+    private final String name;
+    private int index;
+    private final String summary;
+    private final Integer[] connections;
+    private final Integer[] reversedConnections;
+
+    EntryWheel(int type, String name, String summary, Integer[] connections, Integer[] reversedConnections)
+    {
+        this.type = type;
+        this.name = name;
+        this.summary = summary;
+        this.connections = connections;
+        this.reversedConnections = reversedConnections;
+    }
+
+    /**
+     * Returns a new EntryWheel of the same type as the callee
+     * @return new EntryWheel
+     */
+    public EntryWheel getInstance()
+    {
+        return createEntryWheel(this.type).setIndex(this.getIndex());
+    }
+
+    /**
+     * Encrypt an input signal via the internal wiring in "forward" direction towards the reflector
+     * (using connections)
+     * @param input signal
+     * @return encrypted signal
+     */
+    public int encryptForward(int input)
+    {
+        return this.connections[normalize(input)];
+    }
+
+    private int normalize(int input)
+    {
+        return (input+this.connections.length)%this.connections.length;
+    }
+
+    public EntryWheel setIndex(int index)
+    {
+        this.index = index;
+        return this;
+    }
+
+    public int getIndex()
+    {
+        return this.index;
+    }
+
+    /**
+     * Encrypt an input signal via the internal wiring in "backwards" direction (using
+     * reversedConnections)
+     * @param input signal
+     * @return encrypted signal
+     */
+    public int encryptBackward(int input)
+    {
+        return this.reversedConnections[normalize(input)];
+    }
+
+    private EntryWheel createEntryWheel(int type)
+    {
+        switch(type)
+        {
+            case 1:
+                return new EntryWheel_QWERTZ();
+            case 2:
+                return new EntryWheel_T();
+            default: return new EntryWheel_ABCDEF();
+        }
+    }
+
+    public static class EntryWheel_ABCDEF extends EntryWheel
+    {
+        public EntryWheel_ABCDEF()
+        {
+            super(0, "ABCDEF", "abcdefghijklmnopqrstuvwxyz",
+                    new Integer[]{0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25},
+                    new Integer[]{0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25});
+        }
+    }
+
+    /**
+     * EntryWheel as used in the Enigma models D, K, G
+     * Q W E R T Z U I O A S D F G H J K P Y X C V B N M L
+     */
+    public static class EntryWheel_QWERTZ extends EntryWheel
+    {
+        public EntryWheel_QWERTZ()
+        {
+            super(1, "QWERTZ", "qwertzuioasdfghjkpyxcvbnml",
+                    new Integer[]{9,22,20,11,2,12,13,14,7,15,16,25,24,23,8,17,0,3,10,4,6,21,1,19,18,5},
+                    new Integer[]{16,22,4,17,19,25,20,8,14,0,18,3,5,6,7,9,10,15,24,23,2,21,1,13,12,11});
+        }
+    }
+
+    /**
+     * EntryWheel as used only in the Enigma Type T Tirpitz
+     * K Z R O U Q H Y A I G B L W V S T D X F P N M C J E
+     */
+    public static class EntryWheel_T extends EntryWheel
+    {
+        public EntryWheel_T()
+        {
+            super(2, "KZROUQ", "kzrouqhyaigblwvstdxfpnmcje",
+                    new Integer[]{8,11,23,17,25,19,10,6,9,24,0,12,22,21,3,20,5,2,15,16,4,14,13,18,7,1},
+                    new Integer[]{10,25,17,14,20,16,7,24,0,8,6,1,11,22,21,18,19,3,23,5,15,13,12,2,9,4});
+        }
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/parts/Plugboard.java

@@ -0,0 +1,219 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma.parts;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+import java.util.Arrays;
+import java.util.Random;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.Enigma;
+import de.vanitasvitae.enigmandroid.enigma.inputPreparer.InputPreparer;
+
+/**
+ * Plugboard of the enigma
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Plugboard
+{
+    private static final int[] empty = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25};
+    private int[] plugs;
+
+    public Plugboard()
+    {
+        plugs = Arrays.copyOf(empty, empty.length);
+    }
+
+    public Plugboard(int[] conf)
+    {
+        this.plugs = conf;
+    }
+
+    public void setConfiguration(int[] conf)
+    {
+        this.plugs = conf;
+    }
+
+    @SuppressWarnings("UnusedReturnValue")
+    public BigInteger setConfiguration(BigInteger b)
+    {
+        String s = "";
+
+        int x;
+        while((x = Enigma.getValue(b, 27)) != 26 && b.compareTo(BigInteger.ZERO) > 1)
+        {
+            s = ((char) (x+65))+s;
+            b = Enigma.removeDigit(b, 27);
+        }
+        this.setConfiguration(stringToConfiguration(s));
+        return b;
+    }
+
+    public int[] getConfiguration()
+    {
+        return this.plugs;
+    }
+
+    /**
+     * Encrypt input via plugboard connections
+     * @param input input symbol to encryptString
+     * @return encrypted symbol
+     */
+    public int encrypt(int input)
+    {
+        return plugs[(input+plugs.length)%plugs.length];
+    }
+
+    /**
+     * Interpret a String of Pairs as a configuration for the plugboard
+     * Any char with an even index is connected to the successor.
+     * in must not contain duplicates!
+     * @param in String representation of pairs (eg. AXBHCS...)
+     * @return connections as int[]
+     */
+    public static int[] stringToConfiguration(String in)
+    {
+        String pairs = trimString(new InputPreparer.RemoveIllegalCharacters().prepareString(in));
+        int[] out = Arrays.copyOf(empty, empty.length);
+        //Check if in is too long or odd
+        int l = pairs.length();
+        if(l>1 && (pairs.length() > 26 || pairs.length()/2 == (pairs.length()-1)/2))
+        {
+            //Odd length. remove last char. Information loss!
+            pairs = pairs.substring(0,pairs.length()-1);
+        }
+        //Modify out
+        for(int i=0; i<pairs.length()/2; i++)
+        {
+            int a = (int) (pairs.toCharArray()[i*2])-65;
+            int b = (int) (pairs.toCharArray()[(i*2)+1])-65;
+            out[a] = b;
+            out[b] = a;
+        }
+        return out;
+    }
+
+    /**
+     * Remove all duplicate chars x from the String except the first appearance of x.
+     * String MUST be in upper case!
+     * @param in String
+     * @return String
+     */
+    private static String trimString(String in)
+    {
+        in = in.toUpperCase();
+        for(int i=0; i<26; i++)
+        {
+            char x = (char)(i+65);
+            int index = in.indexOf(""+x);
+            if(index != in.lastIndexOf(""+x))
+            {
+                //Remove all duplicates of x
+                in = in.substring(0, index) + in.substring(index+1).replace(""+x,"");
+            }
+        }
+        return in;
+    }
+
+    /**
+     * Generate a configuration from a seeded PRNG.
+     * Not all connections have to be done.
+     * @param rand Seeded PRNG
+     * @return configuration
+     */
+    public static int[] seedToPlugboardConfiguration(Random rand)
+    {
+        int connectionCount = rand.nextInt(14); //0..13
+        int[] out = empty;
+        for(int i=0; i<connectionCount; i++)
+        {
+            int rA = rand.nextInt(26);
+            while(out[rA] != rA) rA = (rA+1)%26;
+            int rB = rand.nextInt(26);
+            while(out[rB] != rB) rB = (rB+1)%26;
+            out[rA] = rB;
+            out[rB] = rA;
+        }
+        return out;
+    }
+
+    /**
+     * Generate a configuration with full set of connections from a seeded PRNG
+     * @param rand Seeded PRNG
+     * @return configuration
+     */
+    public static int[] seedToReflectorConfiguration(Random rand)
+    {
+        int[] out = Arrays.copyOf(empty,empty.length);
+        for (int i=0; i<out.length/2; i++) {
+            int rA = rand.nextInt(26);
+            while (out[rA] != rA) rA = (rA + 27) % 26;
+            int rB = rand.nextInt(26);
+            while (out[rB] != rB || rA == rB) rB = (rB + 27) % 26;
+            out[rA] = rB;
+            out[rB] = rA;
+        }
+        return out;
+    }
+
+    /**
+     * Converts a configurations array back to a String representation
+     * @param c array
+     * @return String representation
+     */
+    private static String configurationToString(int[] c)
+    {
+        String out = "";
+        for(int i=0; i<c.length; i++) // c.length = 26 (mostly)
+        {
+            if(c[i] != i && out.indexOf((char)(c[i])+65)==-1)
+            {
+                out += (char) (i+65);
+                out += (char) (c[i]+65);
+            }
+        }
+        return out;
+    }
+
+    public static BigInteger configurationToBigInteger(int[] a)
+    {
+        String s = configurationToString(a);
+        BigInteger l = BigInteger.ZERO;
+        l = Enigma.addDigit(l,26,27);
+        for(char c : s.toCharArray())
+        {
+            int i = (int) (c);
+            i-=65;
+            l = Enigma.addDigit(l,i,27);
+        }
+        Log.d(MainActivity.APP_ID, "Save configuration plugs: "+l.toString());
+        return l;
+    }
+
+    public static int[] bigIntegerToConfiguration(BigInteger b)
+    {
+        String s = "";
+        int x;
+        while((x = Enigma.getValue(b, 27)) != 26 && b.compareTo(BigInteger.ZERO) > 1)
+        {
+            s = ((char) (x+65))+s;
+            b = Enigma.removeDigit(b, 27);
+        }
+        Log.d(MainActivity.APP_ID, "Restored: "+s);
+        return stringToConfiguration(s);
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/enigma/parts/Reflector.java

@@ -0,0 +1,355 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.enigma.parts;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+import java.util.Arrays;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.enigma.Enigma;
+
+/**
+ * Reflector of the enigma machine.
+ * The reflector was used to reflect the scrambled signal at the end of the wiring back to
+ * go through another (reversed but not inverting) process of scrambling.
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class Reflector
+{
+	private final int type;
+	private final String name;
+	private int index;
+	private final String summary;
+	private int[] connections;
+	private int rotation;
+	private int ringSetting;
+
+	/**
+	 * This constructor is not accessible from outside this class file.
+	 * Use the one of the createReflector* methods instead to create concrete Reflectors from
+	 * outside this class file
+	 * @param type name indicator of the reflector
+	 * @param connections wiring of the reflector as Integer array
+	 */
+	Reflector(int type, String name, String summary, int[] connections)
+	{
+		this.type = type;
+		this.name = name;
+		this.summary = summary;
+		this.connections = connections;
+	}
+
+	public Reflector getInstance()
+	{
+		//noinspection ConstantConditions
+		return createReflector(this.type).setIndex(this.getIndex());
+	}
+
+	public Reflector getInstance(int rotation, int ringSetting)
+	{
+		//noinspection ConstantConditions
+		return createReflector(this.type).setIndex(this.getIndex())
+				.setRotation(rotation).setRingSetting(ringSetting);
+	}
+
+	public Reflector setIndex(int index)
+	{
+		this.index = index;
+		return this;
+	}
+
+	public int getIndex()
+	{
+		return this.index;
+	}
+
+	public int getRotation()
+	{
+		return rotation;
+	}
+
+	public int getRingSetting()
+	{
+		return ringSetting;
+	}
+
+	public Reflector setRotation(int rotation)
+	{
+		this.rotation = rotation;
+		return this;
+	}
+
+	public Reflector setRingSetting(int ringSetting)
+	{
+		this.ringSetting = ringSetting;
+		return this;
+	}
+
+	public Reflector setConfiguration(int[] c)
+	{
+		this.connections = c;
+		return this;
+	}
+
+	@SuppressWarnings("UnusedReturnValue")
+	public BigInteger setConfiguration(BigInteger b)
+	{
+		String s = "";
+
+		int x;
+		while((x = Enigma.getValue(b, 27)) != 26 || b.compareTo(BigInteger.ZERO) > 1)
+		{
+			s = ((char) (x+65))+s;
+			b = Enigma.removeDigit(b, 27);
+		}
+		Log.d(MainActivity.APP_ID, "Restored: " + s);
+		this.setConfiguration(Plugboard.stringToConfiguration(s));
+		return b;
+	}
+
+	public int[] getConfiguration()
+	{
+		return connections;
+	}
+
+	/**
+	 * Factory method to create reflectors.
+	 * @param type name of the created reflector
+	 *             1 -> ReflectorA
+	 *             2 -> ReflectorB
+	 *             3 -> ReflectorC
+	 *             4 -> ReflectorThinB
+	 *             5 -> ReflectorThinC
+	 *             6 -> ReflectorEnigma_D_KD_G31
+	 *             7 -> Reflector_K
+	 *             8 -> Reflector_T
+	 *             9 -> Reflector_G312
+	 *             10 -> Reflector_G260
+	 *             11 -> Reflector_R
+	 *             default -> ReflectorB
+	 * @return Reflector
+	 */
+	private static Reflector createReflector(int type)
+	{
+		switch (type)
+		{
+			case 0: return new Reflector_A();
+			case 1: return new Reflector_B();
+			case 2: return new Reflector_C();
+			case 10: return new Reflector_Thin_B();
+			case 11: return new ReflectorThinC();
+			case 20: return new ReflectorEnigma_D_G31();
+			case 21: return new ReflectorEnigma_KD();
+			case 30: return new Reflector_G312();
+			case 40: return new Reflector_K_G260();
+			case 50: return new Reflector_R();
+			case 60: return new ReflectorEnigma_T();
+
+			default:
+				Log.e(MainActivity.APP_ID," Tried to create Reflector of invalid name "+type);
+				return null;
+		}
+	}
+
+	/**
+	 * Substitute an input signal via the wiring of the reflector with a different (!) output.
+	 * The output MUST not be equal to the input for any input, since this was not possible
+	 * due to the electronic implementation of the historical enigma machine.
+	 * @param input input signal
+	 * @return encrypted (substituted) output
+	 */
+	public int encrypt(int input)
+	{
+		return this.connections[normalize(input)];
+	}
+
+	/**
+	 * Return the size (ie the number of wires/length of the connections array) of the reflector
+	 * @return size
+	 */
+	private int getRotorSize()
+	{
+		return this.connections.length;
+	}
+
+	/**
+	 * Normalize the input.
+	 * Normalizing means keeping the input via modulo in the range from 0 to n-1, where n is equal
+	 * to the size of the reflector. This is necessary since java allows negative modulo values,
+	 * which can break this implementation
+	 * @param input input signal
+	 * @return "normalized" input signal
+	 */
+	private int normalize(int input)
+	{
+		return (input + this.getRotorSize()) % this.getRotorSize();
+	}
+
+	/**
+	 * Concrete implementation of ReflectorA
+	 * Used in Enigma I
+	 * AE  BJ  CM  DZ  FL  GY  HX  IV  KW  NR  OQ  PU  ST
+	 */
+	public static class Reflector_A extends Reflector
+	{
+		public Reflector_A()
+		{
+			super(0, "A", "EJMZALYXVBWFCRQUONTSPIKHGD",
+				  new int[]{4,9,12,25,0,11,24,23,21,1,22,5,2,17,16,20,14,13,19,18,15,8,10,7,6,3});
+		}
+	}
+
+	/**
+	 * Concrete implementation of ReflectorB
+	 * Used in Enigma I, M3
+	 * AY  BR  CU  DH  EQ  FS  GL  IP  JX  KN  MO  TZ  VW
+	 */
+	public static class Reflector_B extends Reflector
+	{
+		public Reflector_B()
+		{
+			super(1, "B", "YRUHQSLDPXNGOKMIEBFZCWVJAT",
+				  new int[]{24,17,20,7,16,18,11,3,15,23,13,6,14,10,12,8,4,1,5,25,2,22,21,9,0,19});
+		}
+	}
+
+	/**
+	 * Concrete implementation of ReflectorC
+	 * Used in Enigma I, M3
+	 * AF  BV  CP  DJ  EI  GO  HY  KR  LZ  MX  NW  QT  SU
+	 */
+	public static class Reflector_C extends Reflector
+	{
+		public Reflector_C()
+		{
+			super(2, "C", "FVPJIAOYEDRZXWGCTKUGSBNMHL",
+				  new int[]{5,21,15,9,8,0,14,24,4,3,17,25,23,22,6,2,19,10,20,16,18,1,13,12,7,11});
+		}
+	}
+
+	/**
+	 * Concrete implementation of thin reflector name b (not equal to normal name b!)
+	 * When used with Rotor Beta on rotation 0, the pair was equivalent to normal reflector B
+	 * S->Beta->ThinB->Beta'->X == X->UKWB->S
+	 * Used in Enigma M4
+	 * E N K Q A U Y W J I C O P B L M D X Z V F T H R G S
+	 */
+	public static class Reflector_Thin_B extends Reflector
+	{
+		public Reflector_Thin_B()
+		{
+			super(10, "Thin-B", "ENKQAUYWJICOPBLMDXZVFTHRGS",
+				  new int[]{4,13,10,16,0,20,24,22,9,8,2,14,15,1,11,12,3,23,25,21,5,19,7,17,6,18});
+		}
+	}
+
+	/**
+	 * Concrete implementation of thin reflector name c (not equal to normal name c!)
+	 * When used with Rotor Gamma on rotation 0, the pair was equivalent to normal reflector C
+	 * S->Gamma->ThinC->Gamma'->X == X->UKWC->S
+	 * Used in Enigma M4
+	 * R D O B J N T K V E H M L F C W Z A X G Y I P S U Q
+	 */
+	public static class ReflectorThinC extends Reflector
+	{
+		public ReflectorThinC()
+		{
+			super(11, "ThinC", "RDOBJNTKVEHMLFCWZAXGYIPSUQ",
+				  new int[]{17,3,14,1,9,13,19,10,21,4,7,12,11,5,2,22,25,0,23,6,24,8,15,18,20,16});
+		}
+	}
+
+	/**
+	 * Pluggable Reflector of the Enigma machine of name D and G31
+	 * Standard wiring: AI,BM,CE,DT,FG,HR,JY,KS,LQ,NZ,OX,PW,UV
+	 * Has additional ringSetting and can rotate
+	 */
+	public static class ReflectorEnigma_D_G31 extends Reflector
+	{
+		public static final int[] defaultWiring_D_G31 =  {8,12,4,19,2,6,5,17,0,24,18,16,1,25,23,22,11,7,10,3,21,20,15,14,9,13};
+		public ReflectorEnigma_D_G31()
+		{
+			super(20, "Ref-D", "Default: IMETCGFRAYSQBZXWLHKDVUPOJN", Arrays.copyOf(defaultWiring_D_G31,defaultWiring_D_G31.length));
+		}
+	}
+
+	/**
+	 * Pluggable Reflector as used in the Enigma of Type KD
+	 * Standard wiring: KOTVPNLMJIAGHFBEWYXCZDQSRU
+	 * Has additional ringSetting and can rotate
+	 */
+	public static class ReflectorEnigma_KD extends Reflector
+	{
+		public static final int[] defaultWiring_KD = {10,14,19,21,15,13,11,12,9,8,0,6,7,5,1,4,22,24,23,2,25,3,16,18,17,20};
+		public ReflectorEnigma_KD()
+		{
+			super(21, "Ref-KD", "Default: KOTVPNLMJIAGHFBEWYXCZDQSRU", Arrays.copyOf(defaultWiring_KD, defaultWiring_KD.length));
+		}
+	}
+
+	/**
+	 * Reflector as used in the Enigma name G-312 Abwehr
+	 * R U L Q M Z J S Y G O C E T K W D A H N B X P V I F
+	 */
+	public static class Reflector_G312 extends Reflector
+	{
+		public Reflector_G312()
+		{
+			super(30, "Ref-G312", "RULQMZJSYGOCETKWDAHNBXPVIF",
+				  new int[]{17,20,11,16,12,25,9,18,24,6,14,2,4,19,10,22,3,0,7,13,1,23,15,21,8,5});
+		}
+	}
+
+	/**
+	 * Reflector as used in the Enigma name G-260 Abwehr
+	 * I M E T C G F R A Y S Q B Z X W L H K D V U P O J N
+	 */
+	public static class Reflector_K_G260 extends Reflector
+	{
+		public Reflector_K_G260()
+		{
+			super(40,"Ref-K/G260", "IMETCGFRAYSQBZXWLHKDVUPOJN",
+				  new int[]{8,12,4,19,2,6,5,17,0,24,18,16,1,25,23,22,11,7,10,3,21,20,15,14,9,13});
+		}
+	}
+
+	/**
+	 * Reflector as used in the Enigma Type R "Rocket" (Reichsbahn)
+	 * Q Y H O G N E C V P U Z T F D J A X W M K J S R B L
+	 */
+	public static class Reflector_R extends Reflector
+	{
+		public Reflector_R()
+		{
+			super(50, "Ref-R", "QYHOGNECVPUZTFDJAXWMKJSRBL",
+				  new int[]{16,24,7,14,6,13,4,2,21,15,20,25,19,5,3,9,0,23,22,12,10,8,18,17,1,11});
+		}
+	}
+
+	/**
+	 * Reflector as used in the Enigma name T (Tirpitz)
+	 * G E K P B T A U M O C N I L J D X Z Y F H W V Q S R
+	 */
+	public static class ReflectorEnigma_T extends Reflector
+	{
+		public ReflectorEnigma_T()
+		{
+			super(60, "Ref-T", "GEKPBTAUMOCNILJDXZYFHWVQSR",
+				  new int[]{6,4,10,15,1,19,0,20,12,14,2,13,8,11,9,3,23,25,24,5,7,22,21,16,18,17});
+		}
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer.java

@@ -0,0 +1,192 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.widget.ArrayAdapter;
+import android.widget.EditText;
+import android.widget.Spinner;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.SettingsActivity;
+import de.vanitasvitae.enigmandroid.enigma.Enigma;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.inputPreparer.EditTextAdapter;
+import de.vanitasvitae.enigmandroid.enigma.inputPreparer.InputPreparer;
+
+/**
+ * Abstract LayoutContainer for Enigma machines
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public abstract class LayoutContainer
+{
+	final EditText inputView;
+	private final EditText outputView;
+
+	EditTextAdapter input;
+	EditTextAdapter output;
+
+	InputPreparer inputPreparer;
+	final MainActivity main;
+
+	public abstract Enigma getEnigma();
+	protected abstract void assembleLayout();
+	public abstract void resetLayout();
+	protected abstract void setLayoutState(EnigmaStateBundle state);
+	public abstract void syncStateFromLayoutToEnigma();
+	public void syncStateFromEnigmaToLayout()
+	{
+		this.setLayoutState(getEnigma().getState());
+	}
+	public abstract void showRingSettingsDialog();
+
+	LayoutContainer()
+	{
+		main = (MainActivity) MainActivity.ActivitySingleton.getInstance().getActivity();
+		setEnigmaLayout();
+		this.inputView = (EditText) main.findViewById(R.id.input);
+		this.outputView = (EditText) main.findViewById(R.id.output);
+		input = EditTextAdapter.createEditTextAdapter(inputView,
+						SettingsActivity.SettingsSingleton.getInstance().getPrefMessageFormatting());
+		output = EditTextAdapter.createEditTextAdapter(outputView,
+						SettingsActivity.SettingsSingleton.getInstance().getPrefMessageFormatting());
+		inputPreparer = InputPreparer.createInputPreparer();
+		assembleLayout();
+		finishLayout();
+	}
+
+	public void doCrypto()
+	{
+		if(inputView.getText().length()!=0)
+		{
+			syncStateFromLayoutToEnigma();
+			String message = inputView.getText().toString();
+			message = inputPreparer.prepareString(message);
+			input.setText(message);
+			output.setText(getEnigma().encryptString(message));
+			setLayoutState(getEnigma().getState());
+		}
+	}
+
+	public EditTextAdapter getInput()
+	{
+		return this.input;
+	}
+
+	public EditTextAdapter getOutput()
+	{
+		return this.output;
+	}
+
+	public static LayoutContainer createLayoutContainer()
+	{
+		return createLayoutContainer(SettingsActivity.SettingsSingleton.getInstance().getPrefMachineType());
+	}
+
+	private static LayoutContainer createLayoutContainer(String enigmaType)
+	{
+		switch (enigmaType) {
+			case "I":
+				return new LayoutContainer_I();
+			case "M3":
+				return new LayoutContainer_M3();
+			case "M4":
+				return new LayoutContainer_M4();
+			case "D":
+				return new LayoutContainer_D();
+			case "K":
+				return new LayoutContainer_K();
+			case "KS":
+				return new LayoutContainer_K_Swiss();
+			case "KSA":
+				return new LayoutContainer_K_Swiss_Airforce();
+			case "T":
+				return new LayoutContainer_T();
+			case "R":
+				return new LayoutContainer_R();
+			case "G31":
+				return new LayoutContainer_G31();
+			case "G312":
+				return new LayoutContainer_G312();
+			case "G260":
+				return new LayoutContainer_G260();
+			case "KD":
+				return new LayoutContainer_KD();
+			default:
+				return new LayoutContainer_I();
+		}
+	}
+
+	/**
+	 * Add ArrayAdapter, contents and layouts to Spinner
+	 * @param view Spinner
+	 * @param resourceID ID of the referenced array (eg. R.array.rotor_1_8)
+	 */
+	void prepareSpinnerAdapter(Spinner view, int resourceID) {
+		MainActivity main = (MainActivity) MainActivity.ActivitySingleton.getInstance().getActivity();
+
+		ArrayAdapter<CharSequence> ad = new ArrayAdapter<CharSequence>(main,
+				android.R.layout.simple_spinner_item,
+				main.getResources().getTextArray(resourceID));
+
+		ad.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+		ad.setDropDownViewTheme(main.getTheme());
+		view.setAdapter(ad);
+	}
+
+	/**
+	 * Add ArrayAdapter, contents and layouts to Spinner
+	 * @param view Spinner
+	 * @param array Character array
+	 */
+	void prepareSpinnerAdapter(Spinner view, Character[] array)
+	{
+		MainActivity main = (MainActivity) MainActivity.ActivitySingleton.getInstance().getActivity();
+		ArrayAdapter<Character> adapter = new ArrayAdapter<>(main,
+															 android.R.layout.simple_spinner_item, array);
+		adapter.setDropDownViewResource(
+				android.R.layout.simple_spinner_dropdown_item);
+		adapter.setDropDownViewTheme(main.getTheme());
+		view.setAdapter(adapter);
+	}
+
+	public void setInputPreparer(InputPreparer inputPreparer)
+	{
+		this.inputPreparer = inputPreparer;
+	}
+
+	public void setEditTextAdapter(String type)
+	{
+		String in = input.getText();
+		String out = output.getText();
+		input = EditTextAdapter.createEditTextAdapter(inputView, type);
+		input.setText(in);
+		output = EditTextAdapter.createEditTextAdapter(outputView, type);
+		output.setText(out);
+	}
+
+	protected void setMainActivityLayout()
+	{
+		setEnigmaLayout();
+	}
+
+	abstract protected void setEnigmaLayout();
+
+	private void finishLayout()
+	{
+		//TODO
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_D.java

@@ -0,0 +1,117 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.view.View;
+import android.widget.Button;
+import android.widget.Spinner;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.Enigma_D;
+
+/**
+ * Concrete LayoutContainer for the D layout.
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_D extends LayoutContainer
+{
+    private Enigma_D enigma;
+
+    private Spinner rotor1PositionView;
+    private Spinner rotor2PositionView;
+    private Spinner rotor3PositionView;
+    private Spinner reflectorPositionView;
+
+    public LayoutContainer_D()
+    {
+        super();
+        main.setTitle("D - EnigmAndroid");
+        this.resetLayout();
+    }
+
+    @Override
+    protected void setEnigmaLayout()
+    {
+        MainActivity.ActivitySingleton.getInstance().getActivity().setContentView(R.layout.activity_main_d);
+    }
+
+    @Override
+    protected void assembleLayout()
+    {
+        this.rotor1PositionView = (Spinner) main.findViewById(R.id.rotor1position);
+        this.rotor2PositionView = (Spinner) main.findViewById(R.id.rotor2position);
+        this.rotor3PositionView = (Spinner) main.findViewById(R.id.rotor3position);
+        this.reflectorPositionView = (Spinner) main.findViewById(R.id.reflector_position);
+        Button reflectorWiring = (Button) main.findViewById(R.id.button_reflector);
+        reflectorWiring.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                new PluggableDialogBuilder(getEnigma().getState()).showDialogReflector();
+            }
+        });
+
+        Character[] rotorPositionArray = new Character[26];
+        for(int i=0; i<26; i++) {rotorPositionArray[i] = (char) (65+i); /*Fill with A..Z*/}
+
+        prepareSpinnerAdapter(rotor1PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor2PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor3PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(reflectorPositionView, rotorPositionArray);
+    }
+
+    @Override
+    public void resetLayout()
+    {
+        enigma = new Enigma_D();
+        setLayoutState(enigma.getState());
+        output.setText("");
+        input.setText("");
+    }
+
+    @Override
+    public void setLayoutState(EnigmaStateBundle state)
+    {
+        this.rotor1PositionView.setSelection(state.getRotationRotor1());
+        this.rotor2PositionView.setSelection(state.getRotationRotor2());
+        this.rotor3PositionView.setSelection(state.getRotationRotor3());
+        this.reflectorPositionView.setSelection(state.getRotationReflector());
+    }
+
+    @Override
+    public void syncStateFromLayoutToEnigma()
+    {
+        EnigmaStateBundle state = getEnigma().getState();
+        state.setRotationRotor1(rotor1PositionView.getSelectedItemPosition());
+        state.setRotationRotor2(rotor2PositionView.getSelectedItemPosition());
+        state.setRotationRotor3(rotor3PositionView.getSelectedItemPosition());
+        state.setRotationReflector(reflectorPositionView.getSelectedItemPosition());
+        getEnigma().setState(state);
+    }
+
+    public Enigma_D getEnigma()
+    {
+        return this.enigma;
+    }
+
+    @Override
+    public void showRingSettingsDialog()
+    {
+        new RingSettingsDialogBuilder.RingSettingsDialogBuilderRotRotRotRef().
+                createRingSettingsDialog(getEnigma().getState());
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_G260.java

@@ -0,0 +1,40 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import de.vanitasvitae.enigmandroid.enigma.Enigma_G260;
+
+/**
+ * LayoutContainer for the Enigma Model G260
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_G260 extends LayoutContainer_G31
+{
+	public LayoutContainer_G260()
+	{
+		super();
+		main.setTitle("G260 - EnigmAndroid");
+		this.resetLayout();
+	}
+
+	@Override
+	public void resetLayout() {
+		enigma = new Enigma_G260();
+		setLayoutState(enigma.getState());
+		output.setText("");
+		input.setText("");
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_G31.java

@@ -0,0 +1,123 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.widget.Spinner;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.Enigma;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.Enigma_G31;
+
+/**
+ * LayoutContainer for the Enigma Model G31
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_G31 extends LayoutContainer
+{
+	Enigma enigma;
+
+	private Spinner rotor1View;
+	private Spinner rotor2View;
+	private Spinner rotor3View;
+
+	private Spinner rotor1PositionView;
+	private Spinner rotor2PositionView;
+	private Spinner rotor3PositionView;
+	private Spinner reflectorPositionView;
+
+	public LayoutContainer_G31()
+	{
+		super();
+		main.setTitle("G31 - EnigmAndroid");
+		this.resetLayout();
+	}
+
+	@Override
+	protected void setEnigmaLayout()
+	{
+		MainActivity.ActivitySingleton.getInstance().getActivity().setContentView(R.layout.activity_main_g_k_r_t);
+	}
+
+	@Override
+	public Enigma getEnigma() {
+		return this.enigma;
+	}
+
+	@Override
+	protected void assembleLayout() {
+		this.rotor1View = (Spinner) main.findViewById(R.id.rotor1);
+		this.rotor2View = (Spinner) main.findViewById(R.id.rotor2);
+		this.rotor3View = (Spinner) main.findViewById(R.id.rotor3);
+		this.rotor1PositionView = (Spinner) main.findViewById(R.id.rotor1position);
+		this.rotor2PositionView = (Spinner) main.findViewById(R.id.rotor2position);
+		this.rotor3PositionView = (Spinner) main.findViewById(R.id.rotor3position);
+		this.reflectorPositionView = (Spinner) main.findViewById(R.id.reflector_position);
+
+		Character[] rotorPositionArray = new Character[26];
+		for(int i=0; i<26; i++) {rotorPositionArray[i] = (char) (65+i); /*Fill with A..Z*/}
+
+		prepareSpinnerAdapter(rotor1View, R.array.rotors_1_3);
+		prepareSpinnerAdapter(rotor2View, R.array.rotors_1_3);
+		prepareSpinnerAdapter(rotor3View, R.array.rotors_1_3);
+		prepareSpinnerAdapter(rotor1PositionView, rotorPositionArray);
+		prepareSpinnerAdapter(rotor2PositionView, rotorPositionArray);
+		prepareSpinnerAdapter(rotor3PositionView, rotorPositionArray);
+		prepareSpinnerAdapter(reflectorPositionView, rotorPositionArray);
+	}
+
+	@Override
+	public void resetLayout() {
+		enigma = new Enigma_G31();
+		setLayoutState(enigma.getState());
+		output.setText("");
+		input.setText("");
+	}
+
+	@Override
+	public void setLayoutState(EnigmaStateBundle state)
+	{
+		this.rotor1View.setSelection(state.getTypeRotor1());
+		this.rotor2View.setSelection(state.getTypeRotor2());
+		this.rotor3View.setSelection(state.getTypeRotor3());
+		this.rotor1PositionView.setSelection(state.getRotationRotor1());
+		this.rotor2PositionView.setSelection(state.getRotationRotor2());
+		this.rotor3PositionView.setSelection(state.getRotationRotor3());
+		this.reflectorPositionView.setSelection(state.getRotationReflector());
+	}
+
+	@Override
+	public void syncStateFromLayoutToEnigma()
+	{
+		EnigmaStateBundle state = getEnigma().getState();
+		state.setTypeRotor1(rotor1View.getSelectedItemPosition());
+		state.setTypeRotor2(rotor2View.getSelectedItemPosition());
+		state.setTypeRotor3(rotor3View.getSelectedItemPosition());
+		state.setRotationRotor1(rotor1PositionView.getSelectedItemPosition());
+		state.setRotationRotor2(rotor2PositionView.getSelectedItemPosition());
+		state.setRotationRotor3(rotor3PositionView.getSelectedItemPosition());
+		state.setRotationReflector(reflectorPositionView.getSelectedItemPosition());
+		getEnigma().setState(state);
+	}
+
+	@Override
+	public void showRingSettingsDialog()
+	{
+		new RingSettingsDialogBuilder.RingSettingsDialogBuilderRotRotRotRef().
+				createRingSettingsDialog(getEnigma().getState());
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_G312.java

@@ -0,0 +1,40 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import de.vanitasvitae.enigmandroid.enigma.Enigma_G312;
+
+/**
+ * LayoutContainer for the Enigma Model G312
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_G312 extends LayoutContainer_G31
+{
+    public LayoutContainer_G312()
+    {
+        super();
+        main.setTitle("G312 - EnigmAndroid");
+        this.resetLayout();
+    }
+
+    @Override
+    public void resetLayout() {
+        enigma = new Enigma_G312();
+        setLayoutState(enigma.getState());
+        output.setText("");
+        input.setText("");
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_I.java

@@ -0,0 +1,132 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.view.View;
+import android.widget.Button;
+import android.widget.Spinner;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.Enigma_I;
+
+/**
+ * Concrete LayoutContainer for the Enigma I layout.
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_I extends LayoutContainer
+{
+    private Enigma_I enigma;
+
+    Spinner rotor1View;
+    Spinner rotor2View;
+    Spinner rotor3View;
+    Spinner reflectorView;
+    Spinner rotor1PositionView;
+    Spinner rotor2PositionView;
+    Spinner rotor3PositionView;
+
+    public LayoutContainer_I()
+    {
+        super();
+        main.setTitle("I - EnigmAndroid");
+        this.resetLayout();
+    }
+
+    @Override
+    protected void setEnigmaLayout()
+    {
+        MainActivity.ActivitySingleton.getInstance().getActivity().setContentView(R.layout.activity_main_i_m3);
+    }
+
+    @Override
+    protected void assembleLayout()
+    {
+        this.rotor1View = (Spinner) main.findViewById(R.id.rotor1);
+        this.rotor2View = (Spinner) main.findViewById(R.id.rotor2);
+        this.rotor3View = (Spinner) main.findViewById(R.id.rotor3);
+        this.rotor1PositionView = (Spinner) main.findViewById(R.id.rotor1position);
+        this.rotor2PositionView = (Spinner) main.findViewById(R.id.rotor2position);
+        this.rotor3PositionView = (Spinner) main.findViewById(R.id.rotor3position);
+        this.reflectorView = (Spinner) main.findViewById(R.id.reflector);
+        Button setPlugboardButton = (Button) main.findViewById(R.id.button_plugboard);
+        setPlugboardButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                new PluggableDialogBuilder(getEnigma().getState()).showDialogPlugboard();
+            }
+        });
+
+        Character[] rotorPositionArray = new Character[26];
+        for(int i=0; i<26; i++) {rotorPositionArray[i] = (char) (65+i); /*Fill with A..Z*/}
+
+        prepareSpinnerAdapter(rotor1View, R.array.rotors_1_5);
+        prepareSpinnerAdapter(rotor2View, R.array.rotors_1_5);
+        prepareSpinnerAdapter(rotor3View, R.array.rotors_1_5);
+        prepareSpinnerAdapter(reflectorView, R.array.reflectors_a_c);
+        prepareSpinnerAdapter(rotor1PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor2PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor3PositionView, rotorPositionArray);
+    }
+
+    @Override
+    public void resetLayout()
+    {
+        enigma = new Enigma_I();
+        setLayoutState(enigma.getState());
+        output.setText("");
+        input.setText("");
+    }
+
+    @Override
+    public void setLayoutState(EnigmaStateBundle state)
+    {
+        this.rotor1View.setSelection(state.getTypeRotor1());
+        this.rotor2View.setSelection(state.getTypeRotor2());
+        this.rotor3View.setSelection(state.getTypeRotor3());
+        this.reflectorView.setSelection(state.getTypeReflector());
+        this.rotor1PositionView.setSelection(state.getRotationRotor1());
+        this.rotor2PositionView.setSelection(state.getRotationRotor2());
+        this.rotor3PositionView.setSelection(state.getRotationRotor3());
+    }
+
+    @Override
+    public void syncStateFromLayoutToEnigma()
+    {
+        EnigmaStateBundle state = getEnigma().getState();
+        state.setTypeRotor1(rotor1View.getSelectedItemPosition());
+        state.setTypeRotor2(rotor2View.getSelectedItemPosition());
+        state.setTypeRotor3(rotor3View.getSelectedItemPosition());
+        state.setTypeReflector(reflectorView.getSelectedItemPosition());
+        state.setRotationRotor1(rotor1PositionView.getSelectedItemPosition());
+        state.setRotationRotor2(rotor2PositionView.getSelectedItemPosition());
+        state.setRotationRotor3(rotor3PositionView.getSelectedItemPosition());
+        getEnigma().setState(state);
+    }
+
+    public Enigma_I getEnigma()
+    {
+        return this.enigma;
+    }
+
+    @Override
+    public void showRingSettingsDialog()
+    {
+        new RingSettingsDialogBuilder.RingSettingsDialogBuilderRotRotRot().
+                createRingSettingsDialog(getEnigma().getState());
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_K.java

@@ -0,0 +1,124 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.widget.Spinner;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.Enigma;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.Enigma_K;
+
+/**
+ * LayoutContainer for the Enigma Model K
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_K extends LayoutContainer
+{
+    Enigma enigma;
+
+    private Spinner rotor1View;
+    private Spinner rotor2View;
+    private Spinner rotor3View;
+
+    private Spinner rotor1PositionView;
+    private Spinner rotor2PositionView;
+    private Spinner rotor3PositionView;
+    private Spinner reflectorPositionView;
+
+    public LayoutContainer_K()
+    {
+        super();
+        main.setTitle("K - EnigmAndroid");
+        this.resetLayout();
+    }
+
+    @Override
+    protected void setEnigmaLayout()
+    {
+        MainActivity.ActivitySingleton.getInstance().getActivity().setContentView(R.layout.activity_main_g_k_r_t);
+    }
+
+    @Override
+    public Enigma getEnigma() {
+        return this.enigma;
+    }
+
+    @Override
+    protected void assembleLayout() {
+        this.rotor1View = (Spinner) main.findViewById(R.id.rotor1);
+        this.rotor2View = (Spinner) main.findViewById(R.id.rotor2);
+        this.rotor3View = (Spinner) main.findViewById(R.id.rotor3);
+        this.rotor1PositionView = (Spinner) main.findViewById(R.id.rotor1position);
+        this.rotor2PositionView = (Spinner) main.findViewById(R.id.rotor2position);
+        this.rotor3PositionView = (Spinner) main.findViewById(R.id.rotor3position);
+        this.reflectorPositionView = (Spinner) main.findViewById(R.id.reflector_position);
+
+        Character[] rotorPositionArray = new Character[26];
+        for(int i=0; i<26; i++) {rotorPositionArray[i] = (char) (65+i); /*Fill with A..Z*/}
+
+        prepareSpinnerAdapter(rotor1View, R.array.rotors_1_3);
+        prepareSpinnerAdapter(rotor2View, R.array.rotors_1_3);
+        prepareSpinnerAdapter(rotor3View, R.array.rotors_1_3);
+
+        prepareSpinnerAdapter(rotor1PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor2PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor3PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(reflectorPositionView, rotorPositionArray);
+    }
+
+    @Override
+    public void resetLayout() {
+        enigma = new Enigma_K();
+        setLayoutState(enigma.getState());
+        output.setText("");
+        input.setText("");
+    }
+
+    @Override
+    public void setLayoutState(EnigmaStateBundle state)
+    {
+        this.rotor1View.setSelection(state.getTypeRotor1());
+        this.rotor2View.setSelection(state.getTypeRotor2());
+        this.rotor3View.setSelection(state.getTypeRotor3());
+        this.rotor1PositionView.setSelection(state.getRotationRotor1());
+        this.rotor2PositionView.setSelection(state.getRotationRotor2());
+        this.rotor3PositionView.setSelection(state.getRotationRotor3());
+        this.reflectorPositionView.setSelection(state.getRotationReflector());
+    }
+
+    @Override
+    public void syncStateFromLayoutToEnigma()
+    {
+        EnigmaStateBundle state = getEnigma().getState();
+        state.setTypeRotor1(rotor1View.getSelectedItemPosition());
+        state.setTypeRotor2(rotor2View.getSelectedItemPosition());
+        state.setTypeRotor3(rotor3View.getSelectedItemPosition());
+        state.setRotationRotor1(rotor1PositionView.getSelectedItemPosition());
+        state.setRotationRotor2(rotor2PositionView.getSelectedItemPosition());
+        state.setRotationRotor3(rotor3PositionView.getSelectedItemPosition());
+        state.setRotationReflector(reflectorPositionView.getSelectedItemPosition());
+        getEnigma().setState(state);
+    }
+
+    @Override
+    public void showRingSettingsDialog()
+    {
+        new RingSettingsDialogBuilder.RingSettingsDialogBuilderRotRotRotRef().
+                createRingSettingsDialog(getEnigma().getState());
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_KD.java

@@ -0,0 +1,133 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.view.View;
+import android.widget.Button;
+import android.widget.Spinner;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.Enigma;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.Enigma_KD;
+
+/**
+ * LayoutContainer for the Enigma Model K
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_KD extends LayoutContainer
+{
+	private Enigma enigma;
+
+	private Spinner rotor1View;
+	private Spinner rotor2View;
+	private Spinner rotor3View;
+
+	private Spinner rotor1PositionView;
+	private Spinner rotor2PositionView;
+	private Spinner rotor3PositionView;
+	private Spinner reflectorPositionView;
+
+	public LayoutContainer_KD()
+	{
+		super();
+		main.setTitle("KD - EnigmAndroid");
+		this.resetLayout();
+	}
+
+	@Override
+	protected void setEnigmaLayout()
+	{
+		MainActivity.ActivitySingleton.getInstance().getActivity().setContentView(R.layout.activity_main_kd);
+	}
+
+	@Override
+	public Enigma getEnigma() {
+		return this.enigma;
+	}
+
+	@Override
+	protected void assembleLayout() {
+		this.rotor1View = (Spinner) main.findViewById(R.id.rotor1);
+		this.rotor2View = (Spinner) main.findViewById(R.id.rotor2);
+		this.rotor3View = (Spinner) main.findViewById(R.id.rotor3);
+		this.rotor1PositionView = (Spinner) main.findViewById(R.id.rotor1position);
+		this.rotor2PositionView = (Spinner) main.findViewById(R.id.rotor2position);
+		this.rotor3PositionView = (Spinner) main.findViewById(R.id.rotor3position);
+		this.reflectorPositionView = (Spinner) main.findViewById(R.id.reflector_position);
+		Button reflectorWiring = (Button) main.findViewById(R.id.button_reflector);
+		reflectorWiring.setOnClickListener(new View.OnClickListener() {
+			@Override
+			public void onClick(View v) {
+				new PluggableDialogBuilder(getEnigma().getState()).showDialogReflector();
+			}
+		});
+
+		Character[] rotorPositionArray = new Character[26];
+		for(int i=0; i<26; i++) {rotorPositionArray[i] = (char) (65+i); /*Fill with A..Z*/}
+
+		prepareSpinnerAdapter(rotor1View, R.array.rotors_1_3);
+		prepareSpinnerAdapter(rotor2View, R.array.rotors_1_3);
+		prepareSpinnerAdapter(rotor3View, R.array.rotors_1_3);
+
+		prepareSpinnerAdapter(rotor1PositionView, rotorPositionArray);
+		prepareSpinnerAdapter(rotor2PositionView, rotorPositionArray);
+		prepareSpinnerAdapter(rotor3PositionView, rotorPositionArray);
+		prepareSpinnerAdapter(reflectorPositionView, rotorPositionArray);
+	}
+
+	@Override
+	public void resetLayout() {
+		enigma = new Enigma_KD();
+		setLayoutState(enigma.getState());
+		output.setText("");
+		input.setText("");
+	}
+
+	@Override
+	public void setLayoutState(EnigmaStateBundle state)
+	{
+		this.rotor1View.setSelection(state.getTypeRotor1());
+		this.rotor2View.setSelection(state.getTypeRotor2());
+		this.rotor3View.setSelection(state.getTypeRotor3());
+		this.rotor1PositionView.setSelection(state.getRotationRotor1());
+		this.rotor2PositionView.setSelection(state.getRotationRotor2());
+		this.rotor3PositionView.setSelection(state.getRotationRotor3());
+		this.reflectorPositionView.setSelection(state.getRotationReflector());
+	}
+
+	@Override
+	public void syncStateFromLayoutToEnigma()
+	{
+		EnigmaStateBundle state = getEnigma().getState();
+		state.setTypeRotor1(rotor1View.getSelectedItemPosition());
+		state.setTypeRotor2(rotor2View.getSelectedItemPosition());
+		state.setTypeRotor3(rotor3View.getSelectedItemPosition());
+		state.setRotationRotor1(rotor1PositionView.getSelectedItemPosition());
+		state.setRotationRotor2(rotor2PositionView.getSelectedItemPosition());
+		state.setRotationRotor3(rotor3PositionView.getSelectedItemPosition());
+		state.setRotationReflector(reflectorPositionView.getSelectedItemPosition());
+		getEnigma().setState(state);
+	}
+
+	@Override
+	public void showRingSettingsDialog()
+	{
+		new RingSettingsDialogBuilder.RingSettingsDialogBuilderRotRotRotRef().
+				createRingSettingsDialog(getEnigma().getState());
+	}
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_K_Swiss.java

@@ -0,0 +1,40 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import de.vanitasvitae.enigmandroid.enigma.Enigma_K_Swiss_Standard;
+
+/**
+ * LayoutContainer for the Enigma Model K
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_K_Swiss extends LayoutContainer_K
+{
+    public LayoutContainer_K_Swiss()
+    {
+        super();
+        main.setTitle("KS - EnigmAndroid");
+        this.resetLayout();
+    }
+
+    @Override
+    public void resetLayout() {
+        enigma = new Enigma_K_Swiss_Standard();
+        setLayoutState(enigma.getState());
+        output.setText("");
+        input.setText("");
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_K_Swiss_Airforce.java

@@ -0,0 +1,40 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import de.vanitasvitae.enigmandroid.enigma.Enigma_K_Swiss_Airforce;
+
+/**
+ * LayoutContainer for the Enigma Model K
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_K_Swiss_Airforce extends LayoutContainer_K
+{
+    public LayoutContainer_K_Swiss_Airforce()
+    {
+        super();
+        main.setTitle("KSA - EnigmAndroid");
+        this.resetLayout();
+    }
+
+    @Override
+    public void resetLayout() {
+        enigma = new Enigma_K_Swiss_Airforce();
+        setLayoutState(enigma.getState());
+        output.setText("");
+        input.setText("");
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_M3.java

@@ -0,0 +1,111 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.view.View;
+import android.widget.Button;
+import android.widget.Spinner;
+
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.Enigma_M3;
+
+/**
+ * Concrete LayoutContainer for the M3 layout.
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_M3 extends LayoutContainer_I
+{
+    private Enigma_M3 enigma;
+
+    public LayoutContainer_M3()
+    {
+        super();
+        main.setTitle("M3 - EnigmAndroid");
+        this.resetLayout();
+    }
+
+    @Override
+    protected void assembleLayout()
+    {
+        this.rotor1View = (Spinner) main.findViewById(R.id.rotor1);
+        this.rotor2View = (Spinner) main.findViewById(R.id.rotor2);
+        this.rotor3View = (Spinner) main.findViewById(R.id.rotor3);
+        this.rotor1PositionView = (Spinner) main.findViewById(R.id.rotor1position);
+        this.rotor2PositionView = (Spinner) main.findViewById(R.id.rotor2position);
+        this.rotor3PositionView = (Spinner) main.findViewById(R.id.rotor3position);
+        this.reflectorView = (Spinner) main.findViewById(R.id.reflector);
+        Button setPlugboardButton = (Button) main.findViewById(R.id.button_plugboard);
+        setPlugboardButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                new PluggableDialogBuilder(getEnigma().getState()).showDialogPlugboard();
+            }
+        });
+
+        Character[] rotorPositionArray = new Character[26];
+        for(int i=0; i<26; i++) {rotorPositionArray[i] = (char) (65+i); /*Fill with A..Z*/}
+
+        prepareSpinnerAdapter(rotor1View, R.array.rotors_1_8);
+        prepareSpinnerAdapter(rotor2View, R.array.rotors_1_8);
+        prepareSpinnerAdapter(rotor3View, R.array.rotors_1_8);
+        prepareSpinnerAdapter(reflectorView, R.array.reflectors_b_c);
+        prepareSpinnerAdapter(rotor1PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor2PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor3PositionView, rotorPositionArray);
+    }
+
+    @Override
+    public void resetLayout()
+    {
+        enigma = new Enigma_M3();
+        setLayoutState(enigma.getState());
+        output.setText("");
+        input.setText("");
+    }
+
+    @Override
+    public void setLayoutState(EnigmaStateBundle state)
+    {
+        this.rotor1View.setSelection(state.getTypeRotor1());
+        this.rotor2View.setSelection(state.getTypeRotor2());
+        this.rotor3View.setSelection(state.getTypeRotor3());
+        this.reflectorView.setSelection(state.getTypeReflector());
+        this.rotor1PositionView.setSelection(state.getRotationRotor1());
+        this.rotor2PositionView.setSelection(state.getRotationRotor2());
+        this.rotor3PositionView.setSelection(state.getRotationRotor3());
+    }
+
+    @Override
+    public void syncStateFromLayoutToEnigma()
+    {
+        EnigmaStateBundle state = getEnigma().getState();
+        state.setTypeRotor1(rotor1View.getSelectedItemPosition());
+        state.setTypeRotor2(rotor2View.getSelectedItemPosition());
+        state.setTypeRotor3(rotor3View.getSelectedItemPosition());
+        state.setTypeReflector(reflectorView.getSelectedItemPosition());
+        state.setRotationRotor1(rotor1PositionView.getSelectedItemPosition());
+        state.setRotationRotor2(rotor2PositionView.getSelectedItemPosition());
+        state.setRotationRotor3(rotor3PositionView.getSelectedItemPosition());
+        getEnigma().setState(state);
+    }
+
+    @Override
+    public Enigma_M3 getEnigma()
+    {
+        return this.enigma;
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_M4.java

@@ -0,0 +1,139 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.view.View;
+import android.widget.Button;
+import android.widget.Spinner;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.Enigma_M4;
+
+/**
+ * Concrete LayoutContainer for the M4 layout.
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_M4 extends LayoutContainer
+{
+    private Enigma_M4 enigma;
+
+    private Spinner rotor1View;
+    private Spinner rotor2View;
+    private Spinner rotor3View;
+    private Spinner rotor4View;
+    private Spinner reflectorView;
+    private Spinner rotor1PositionView;
+    private Spinner rotor2PositionView;
+    private Spinner rotor3PositionView;
+    private Spinner rotor4PositionView;
+
+    public LayoutContainer_M4()
+    {
+        super();
+        main.setTitle("M4 - EnigmAndroid");
+        this.resetLayout();
+    }
+
+    @Override
+    protected void setEnigmaLayout()
+    {
+        MainActivity.ActivitySingleton.getInstance().getActivity().setContentView(R.layout.activity_main_m4);
+    }
+
+
+    public Enigma_M4 getEnigma()
+    {
+        return this.enigma;
+    }
+
+    @Override
+    protected void assembleLayout() {
+        this.rotor1View = (Spinner) main.findViewById(R.id.rotor1);
+        this.rotor2View = (Spinner) main.findViewById(R.id.rotor2);
+        this.rotor3View = (Spinner) main.findViewById(R.id.rotor3);
+        this.rotor4View = (Spinner) main.findViewById(R.id.thin_rotor);
+        this.rotor1PositionView = (Spinner) main.findViewById(R.id.rotor1position);
+        this.rotor2PositionView = (Spinner) main.findViewById(R.id.rotor2position);
+        this.rotor3PositionView = (Spinner) main.findViewById(R.id.rotor3position);
+        this.rotor4PositionView = (Spinner) main.findViewById(R.id.thin_rotor_position);
+        this.reflectorView = (Spinner) main.findViewById(R.id.reflector);
+        Button setPlugboardButton = (Button) main.findViewById(R.id.button_plugboard);
+        if(setPlugboardButton != null) setPlugboardButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                new PluggableDialogBuilder(getEnigma().getState()).showDialogPlugboard();
+            }
+        });
+
+        Character[] rotorPositionArray = new Character[26];
+        for(int i=0; i<26; i++) {rotorPositionArray[i] = (char) (65+i); /*Fill with A..Z*/}
+
+        prepareSpinnerAdapter(rotor1View, R.array.rotors_1_8);
+        prepareSpinnerAdapter(rotor2View, R.array.rotors_1_8);
+        prepareSpinnerAdapter(rotor3View, R.array.rotors_1_8);
+        prepareSpinnerAdapter(rotor4View, R.array.rotors_beta_gamma);
+        prepareSpinnerAdapter(reflectorView, R.array.reflectors_b_c);
+        prepareSpinnerAdapter(rotor1PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor2PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor3PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor4PositionView, rotorPositionArray);
+    }
+
+    @Override
+    public void resetLayout() {
+        enigma = new Enigma_M4();
+        setLayoutState(enigma.getState());
+        output.setText("");
+        input.setText("");
+    }
+
+    @Override
+    public void setLayoutState(EnigmaStateBundle state) {
+        this.rotor1View.setSelection(state.getTypeRotor1());
+        this.rotor2View.setSelection(state.getTypeRotor2());
+        this.rotor3View.setSelection(state.getTypeRotor3());
+        this.rotor4View.setSelection(state.getTypeRotor4());
+        this.reflectorView.setSelection(state.getTypeReflector());
+        this.rotor1PositionView.setSelection(state.getRotationRotor1());
+        this.rotor2PositionView.setSelection(state.getRotationRotor2());
+        this.rotor3PositionView.setSelection(state.getRotationRotor3());
+        this.rotor4PositionView.setSelection(state.getRotationRotor4());
+    }
+
+    @Override
+    public void syncStateFromLayoutToEnigma() {
+        EnigmaStateBundle state = getEnigma().getState();
+        state.setTypeRotor1(rotor1View.getSelectedItemPosition());
+        state.setTypeRotor2(rotor2View.getSelectedItemPosition());
+        state.setTypeRotor3(rotor3View.getSelectedItemPosition());
+        state.setTypeRotor4(rotor4View.getSelectedItemPosition());
+        state.setTypeReflector(reflectorView.getSelectedItemPosition());
+        state.setRotationRotor1(rotor1PositionView.getSelectedItemPosition());
+        state.setRotationRotor2(rotor2PositionView.getSelectedItemPosition());
+        state.setRotationRotor3(rotor3PositionView.getSelectedItemPosition());
+        state.setRotationRotor4(rotor4PositionView.getSelectedItemPosition());
+        getEnigma().setState(state);
+    }
+
+    @Override
+    public void showRingSettingsDialog()
+    {
+        new RingSettingsDialogBuilder.RingSettingsDialogBuilderRotRotRotRot().
+                createRingSettingsDialog(getEnigma().getState());
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_R.java

@@ -0,0 +1,123 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.widget.Spinner;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.Enigma;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.Enigma_R;
+
+/**
+ * LayoutContainer for the Enigma Model R
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_R extends LayoutContainer
+{
+    private Enigma_R enigma;
+
+    private Spinner rotor1View;
+    private Spinner rotor2View;
+    private Spinner rotor3View;
+
+    private Spinner rotor1PositionView;
+    private Spinner rotor2PositionView;
+    private Spinner rotor3PositionView;
+    private Spinner reflectorPositionView;
+
+    public LayoutContainer_R()
+    {
+        super();
+        main.setTitle("R - EnigmAndroid");
+        this.resetLayout();
+    }
+
+    @Override
+    protected void setEnigmaLayout()
+    {
+        MainActivity.ActivitySingleton.getInstance().getActivity().setContentView(R.layout.activity_main_g_k_r_t);
+    }
+
+    @Override
+    public Enigma getEnigma() {
+        return this.enigma;
+    }
+
+    @Override
+    protected void assembleLayout() {
+        this.rotor1View = (Spinner) main.findViewById(R.id.rotor1);
+        this.rotor2View = (Spinner) main.findViewById(R.id.rotor2);
+        this.rotor3View = (Spinner) main.findViewById(R.id.rotor3);
+        this.rotor1PositionView = (Spinner) main.findViewById(R.id.rotor1position);
+        this.rotor2PositionView = (Spinner) main.findViewById(R.id.rotor2position);
+        this.rotor3PositionView = (Spinner) main.findViewById(R.id.rotor3position);
+        this.reflectorPositionView = (Spinner) main.findViewById(R.id.reflector_position);
+
+        Character[] rotorPositionArray = new Character[26];
+        for(int i=0; i<26; i++) {rotorPositionArray[i] = (char) (65+i); /*Fill with A..Z*/}
+
+        prepareSpinnerAdapter(rotor1View, R.array.rotors_1_3);
+        prepareSpinnerAdapter(rotor2View, R.array.rotors_1_3);
+        prepareSpinnerAdapter(rotor3View, R.array.rotors_1_3);
+        prepareSpinnerAdapter(rotor1PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor2PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor3PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(reflectorPositionView, rotorPositionArray);
+    }
+
+    @Override
+    public void resetLayout() {
+        enigma = new Enigma_R();
+        setLayoutState(enigma.getState());
+        output.setText("");
+        input.setText("");
+    }
+
+    @Override
+    public void setLayoutState(EnigmaStateBundle state)
+    {
+        this.rotor1View.setSelection(state.getTypeRotor1());
+        this.rotor2View.setSelection(state.getTypeRotor2());
+        this.rotor3View.setSelection(state.getTypeRotor3());
+        this.rotor1PositionView.setSelection(state.getRotationRotor1());
+        this.rotor2PositionView.setSelection(state.getRotationRotor2());
+        this.rotor3PositionView.setSelection(state.getRotationRotor3());
+        this.reflectorPositionView.setSelection(state.getRotationReflector());
+    }
+
+    @Override
+    public void syncStateFromLayoutToEnigma()
+    {
+        EnigmaStateBundle state = getEnigma().getState();
+        state.setTypeRotor1(rotor1View.getSelectedItemPosition());
+        state.setTypeRotor2(rotor2View.getSelectedItemPosition());
+        state.setTypeRotor3(rotor3View.getSelectedItemPosition());
+        state.setRotationRotor1(rotor1PositionView.getSelectedItemPosition());
+        state.setRotationRotor2(rotor2PositionView.getSelectedItemPosition());
+        state.setRotationRotor3(rotor3PositionView.getSelectedItemPosition());
+        state.setRotationReflector(reflectorPositionView.getSelectedItemPosition());
+        getEnigma().setState(state);
+    }
+
+    @Override
+    public void showRingSettingsDialog()
+    {
+        new RingSettingsDialogBuilder.RingSettingsDialogBuilderRotRotRotRef().
+                createRingSettingsDialog(getEnigma().getState());
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/LayoutContainer_T.java

@@ -0,0 +1,143 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.widget.Spinner;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.Enigma;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+import de.vanitasvitae.enigmandroid.enigma.Enigma_T;
+
+/**
+ * LayoutContainer for the Enigma Model T
+ * This class contains the layout and controls the layout elements such as spinners and stuff
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class LayoutContainer_T extends LayoutContainer
+{
+    private Enigma_T enigma;
+
+    private Spinner rotor1View;
+    private Spinner rotor2View;
+    private Spinner rotor3View;
+
+    private Spinner rotor1PositionView;
+    private Spinner rotor2PositionView;
+    private Spinner rotor3PositionView;
+    private Spinner reflectorPositionView;
+
+    public LayoutContainer_T()
+    {
+        super();
+        main.setTitle("T - EnigmAndroid");
+        this.resetLayout();
+    }
+
+    @Override
+    public void doCrypto()
+    {
+        if(inputView.getText().length()!=0)
+        {
+            syncStateFromLayoutToEnigma();
+            String message = inputView.getText().toString();
+			//<Insert funny comment here>
+			boolean egg = false;
+			if(message.hashCode() == -1475861192) egg = true;
+			message = inputPreparer.prepareString(message);
+			input.setText(message);
+			if(egg) output.setText("ENIGMA<TURINGMACHINE");
+			else output.setText(getEnigma().encryptString(message));
+			setLayoutState(getEnigma().getState());
+        }
+    }
+
+    @Override
+    protected void setEnigmaLayout()
+    {
+        MainActivity.ActivitySingleton.getInstance().getActivity().setContentView(
+            R.layout.activity_main_g_k_r_t);
+    }
+
+    @Override
+    public Enigma getEnigma() {
+        return this.enigma;
+    }
+
+    @Override
+    protected void assembleLayout() {
+        this.rotor1View = (Spinner) main.findViewById(R.id.rotor1);
+        this.rotor2View = (Spinner) main.findViewById(R.id.rotor2);
+        this.rotor3View = (Spinner) main.findViewById(R.id.rotor3);
+        this.rotor1PositionView = (Spinner) main.findViewById(R.id.rotor1position);
+        this.rotor2PositionView = (Spinner) main.findViewById(R.id.rotor2position);
+        this.rotor3PositionView = (Spinner) main.findViewById(R.id.rotor3position);
+        this.reflectorPositionView = (Spinner) main.findViewById(R.id.reflector_position);
+
+        Character[] rotorPositionArray = new Character[26];
+        for(int i=0; i<26; i++) {rotorPositionArray[i] = (char) (65+i); /*Fill with A..Z*/}
+
+        prepareSpinnerAdapter(rotor1View, R.array.rotors_1_8);
+        prepareSpinnerAdapter(rotor2View, R.array.rotors_1_8);
+        prepareSpinnerAdapter(rotor3View, R.array.rotors_1_8);
+        prepareSpinnerAdapter(rotor1PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor2PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(rotor3PositionView, rotorPositionArray);
+        prepareSpinnerAdapter(reflectorPositionView, rotorPositionArray);
+    }
+
+    @Override
+    public void resetLayout() {
+        enigma = new Enigma_T();
+        setLayoutState(enigma.getState());
+        output.setText("");
+        input.setText("");
+    }
+
+    @Override
+    public void setLayoutState(EnigmaStateBundle state)
+    {
+        this.rotor1View.setSelection(state.getTypeRotor1());
+        this.rotor2View.setSelection(state.getTypeRotor2());
+        this.rotor3View.setSelection(state.getTypeRotor3());
+
+        this.rotor1PositionView.setSelection(state.getRotationRotor1());
+        this.rotor2PositionView.setSelection(state.getRotationRotor2());
+        this.rotor3PositionView.setSelection(state.getRotationRotor3());
+        this.reflectorPositionView.setSelection(state.getRotationReflector());
+    }
+
+    @Override
+    public void syncStateFromLayoutToEnigma()
+    {
+        EnigmaStateBundle state = getEnigma().getState();
+        state.setTypeRotor1(rotor1View.getSelectedItemPosition());
+        state.setTypeRotor2(rotor2View.getSelectedItemPosition());
+        state.setTypeRotor3(rotor3View.getSelectedItemPosition());
+        state.setRotationRotor1(rotor1PositionView.getSelectedItemPosition());
+        state.setRotationRotor2(rotor2PositionView.getSelectedItemPosition());
+        state.setRotationRotor3(rotor3PositionView.getSelectedItemPosition());
+        state.setRotationReflector(reflectorPositionView.getSelectedItemPosition());
+        getEnigma().setState(state);
+    }
+
+    @Override
+    public void showRingSettingsDialog()
+    {
+        new RingSettingsDialogBuilder.RingSettingsDialogBuilderRotRotRotRef().
+                createRingSettingsDialog(getEnigma().getState());
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/PassphraseDialogBuilder.java

@@ -0,0 +1,109 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+
+/**
+ * Builder for the dialog that is used to obtain a passphrase to generate
+ * a enigma configuration from it.
+ * Alternatively the user can enter the content String from a EnigmAndroid QR-Code here.
+ * That would have the same effect as scanning the QR-Code.
+ * Copyright (C) 2015  Paul Schaub
+ */
+public class PassphraseDialogBuilder
+{
+    private final MainActivity main;
+    private final View passphraseDialogView;
+    private final EditText passphrase;
+    private Button positive;
+    public PassphraseDialogBuilder()
+    {
+        main = (MainActivity) MainActivity.ActivitySingleton.getInstance().getActivity();
+        passphraseDialogView = View.inflate(main, R.layout.dialog_passphrase, null);
+        passphrase = (EditText) passphraseDialogView.findViewById(R.id.passphrase);
+        passphrase.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+                //Do nothing
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+                //Do nothing
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                //Count input text and enable positive button if length > 0.
+                //Disable else
+                if(s.length() > 0) positive.setEnabled(true);
+                else positive.setEnabled(false);
+            }
+        });
+    }
+
+    /**
+     * create and show the dialog
+     */
+    public void showDialog()
+    {
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(main);
+        builder.setTitle(R.string.hint_configuration);
+        Dialog d = builder.setView(passphraseDialogView)
+                .setCancelable(true)
+                .setPositiveButton(R.string.dialog_positive, new DialogInterface.OnClickListener()
+                {
+                    public void onClick(DialogInterface dialog, int id)
+                    {
+                        String pass = passphrase.getText().toString();
+                        if(pass.startsWith(MainActivity.APP_ID+"/"))
+						{
+							main.restoreStateFromCode(pass);
+							Toast.makeText(main, R.string.dialog_passphrase_was_coded_state, Toast.LENGTH_LONG).show();
+						}
+						else
+						{
+							main.applyStateFromSeed(pass);
+                            String message = String.format(main.getResources().getString(
+                                    R.string.dialog_passphrase_set), " \'"+pass+"\'");
+							Toast.makeText(main, message, Toast.LENGTH_LONG).show();
+						}
+                    }
+                })
+                .setNegativeButton(R.string.dialog_negative, new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int id) {
+                        dialog.cancel();
+                        Toast.makeText(main, R.string.dialog_abort,
+                                Toast.LENGTH_SHORT).show();
+                    }
+                }).create();
+        d.show();
+        positive = ((AlertDialog)d).getButton(AlertDialog.BUTTON_POSITIVE);
+        positive.setEnabled(false);
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/PluggableDialogBuilder.java

@@ -0,0 +1,432 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.content.res.Resources;
+import android.view.View;
+import android.view.WindowManager;
+import android.widget.Button;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Iterator;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+
+/**
+ * Builder for the dialog that is used to plug the plugboard/wire the
+ * rewirable reflector.
+ * Copyright (C) 2015  Paul Schaub
+ */
+class PluggableDialogBuilder
+{
+    private ArrayList<ButtonWrapper> buttons;
+    private View dialogView;
+    private final MainActivity main;
+    private final EnigmaStateBundle state;
+
+    private boolean allowIncompleteConnections;
+    private Button positive;
+
+    private HashSet<Integer> colors;
+
+    private int previouslyPressedButton = -1;
+
+    /**
+     * Constructor that prepares layout and buttons.
+     * @param state EnigmaStateBundle from which dialog gets restored and which gets manipulated
+     */
+    public PluggableDialogBuilder(EnigmaStateBundle state)
+    {
+        this.state = state;
+        main = (MainActivity) MainActivity.ActivitySingleton.getInstance().getActivity();
+        initializeLayout();
+        setButtonListeners();
+    }
+
+    /**
+     * Show dialog for the plugboard
+     */
+    public void showDialogPlugboard()
+    {
+        allowIncompleteConnections = true;
+        restoreConfigurationPlugboard();
+        AlertDialog.Builder adb = new AlertDialog.Builder(main);
+        adb.setTitle(R.string.title_plugboard_dialog);
+        Dialog d = adb.setView(dialogView)
+                .setCancelable(true)
+                .setPositiveButton(R.string.dialog_positive, new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int id) {
+                        int[] plugs = new int[26];
+                        for (int i = 0; i < 26; i++) {
+                            plugs[i] = buttons.get(i).getConnectedButton();
+                        }
+                        state.setConfigurationPlugboard(plugs);
+                        main.onDialogFinished(state);
+                        Toast.makeText(main.getApplication(), R.string.dialog_plugboard_set, Toast.LENGTH_SHORT).show();
+                    }
+                })
+                .setNegativeButton(R.string.dialog_negative, new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int id) {
+                        dialog.cancel();
+                        Toast.makeText(main, R.string.dialog_abort,
+                                Toast.LENGTH_SHORT).show();
+                    }
+                }).create();
+
+        WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
+        lp.copyFrom(d.getWindow().getAttributes());
+        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
+        lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
+        d.show();
+        d.getWindow().setAttributes(lp);
+    }
+
+    /**
+     * Show the dialog for the reflector. This can only be positively closed when all
+     * connections are made.
+     */
+    public void showDialogReflector()
+    {
+        allowIncompleteConnections = false;
+        restoreConfigurationReflector();
+        AlertDialog.Builder adb = new AlertDialog.Builder(main);
+        adb.setTitle(R.string.title_reflector_dialog);
+        Dialog d = adb.setView(dialogView)
+                .setCancelable(true)
+                .setPositiveButton(R.string.dialog_positive, new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int id) {
+                        int[] plugs = new int[26];
+                        for (int i = 0; i < 26; i++) {
+                            plugs[i] = buttons.get(i).getConnectedButton();
+                        }
+                        state.setConfigurationReflector(plugs);
+                        main.onDialogFinished(state);
+                        Toast.makeText(main.getApplication(), R.string.dialog_reflector_set, Toast.LENGTH_SHORT).show();
+                    }
+                })
+                .setNegativeButton(R.string.dialog_negative, new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int id) {
+                        dialog.cancel();
+                        Toast.makeText(main, R.string.dialog_abort,
+                                Toast.LENGTH_SHORT).show();
+                    }
+                }).create();
+
+        WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
+        lp.copyFrom(d.getWindow().getAttributes());
+        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
+        lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
+        d.show();
+        positive = ((AlertDialog)d).getButton(AlertDialog.BUTTON_POSITIVE);
+        if(!allConnectionsDone())
+        {
+            positive.setEnabled(false);
+        }
+        d.getWindow().setAttributes(lp);
+    }
+
+    /**
+     * Initialize array of buttons, initialize background-color hashset.
+     */
+    private void initializeLayout()
+    {
+        buttons = new ArrayList<>();
+        dialogView = View.inflate(main, R.layout.dialog_plugs, null);
+
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.A),0));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.B),1));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.C),2));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.D),3));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.E),4));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.F),5));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.G),6));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.H),7));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.I),8));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.J),9));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.K),10));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.L),11));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.M),12));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.N),13));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.O),14));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.P),15));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.Q),16));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.R),17));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.S),18));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.T),19));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.U),20));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.V),21));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.W),22));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.X),23));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.Y),24));
+        buttons.add(new ButtonWrapper((Button) dialogView.findViewById(R.id.Z),25));
+
+        colors = new HashSet<>();
+        colors.add(R.drawable.button_orange);
+        colors.add(R.drawable.button_olive);
+        colors.add(R.drawable.button_blue);
+        colors.add(R.drawable.button_red);
+        colors.add(R.drawable.button_yellow);
+        colors.add(R.drawable.button_purple);
+        colors.add(R.drawable.button_green);
+        colors.add(R.drawable.button_cyan);
+        colors.add(R.drawable.button_berry);
+        colors.add(R.drawable.button_brown);
+        colors.add(R.drawable.button_pink);
+        colors.add(R.drawable.button_elder);
+        colors.add(R.drawable.button_black);
+    }
+
+    /**
+     * Set listeners for all buttons
+     */
+    private void setButtonListeners()
+    {
+        for(int i=0; i<26; i++)
+        {
+            Button b = buttons.get(i).getButton();
+            final int id = i;
+            b.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    buttonPressed(id);
+                }
+            });
+        }
+    }
+
+    /**
+     * Check, whether all connections are done. If so, return true.
+     * return false otherwise
+     * @return boolean
+     */
+    private boolean allConnectionsDone()
+    {
+        for(int i=0; i<buttons.size(); i++)
+        {
+            ButtonWrapper b = buttons.get(i);
+            if(b.getConnectedButton() == i || b.getConnectedButton() == -1) return false;
+        }
+        return true;
+    }
+
+    /**
+     * restore the connections according to the plugboard
+     */
+    private void restoreConfigurationPlugboard()
+    {
+        restoreConfiguration(state.getConfigurationPlugboard());
+    }
+
+    /**
+     * restore the connections according to the reflector
+     */
+    private void restoreConfigurationReflector()
+    {
+        restoreConfiguration(state.getConfigurationReflector());
+    }
+
+    /**
+     * Connect all the buttons according to c.
+     * @param c array of connections
+     */
+    private void restoreConfiguration(int[] c)
+    {
+        for(int i=0; i<26; i++)
+        {
+            setPlug(i, c[i]);
+        }
+    }
+
+    /**
+     * Connect button1 and button2. If two buttons got pressed afterwards and they are not the same
+     * they get connected. If one or both of them was connected beforehand, these connections get
+     * resolved. If both events come from the same button, the buttons connections (if any) get
+     * resolved.
+     * @param button1 first and
+     * @param button2 second button
+     */
+    private void setPlug(int button1, int button2)
+    {
+        if(button1 == button2)
+        {
+            setButtonFree(buttons.get(button1).getConnectedButton());
+            setButtonFree(button1);
+        }
+        else
+        {
+            ButtonWrapper b1 = buttons.get(button1);
+            ButtonWrapper b2 = buttons.get(button2);
+
+            if (b1.getConnectedButton() != button1) {
+                setButtonFree(b1.getConnectedButton());
+            }
+            if (b2.getConnectedButton() != button2) {
+                setButtonFree(b2.getConnectedButton());
+            }
+
+            b1.setConnectedButton(button2);
+            b2.setConnectedButton(button1);
+
+            int res;
+            Iterator<Integer> it = colors.iterator();
+            res = it.next();
+            if(res == 0) res = it.next();
+            colors.remove(res);
+
+            b1.setResourceID(res);
+            b2.setResourceID(res);
+        }
+        updatePositiveButton();
+    }
+
+    /**
+     * Update state of positive button. Check, if all connections are done and if so, enable positive
+     * button. Otherwise disable it.
+     */
+    private void updatePositiveButton()
+    {
+        if(!allowIncompleteConnections && positive != null)
+        {
+            if(allConnectionsDone()) positive.setEnabled(true);
+            else positive.setEnabled(false);
+        }
+    }
+
+    /**
+     * Set buttons to not connected. That includes changing background to grey, set connection to
+     * itself.
+     * @param b index of button
+     */
+    private void setButtonFree(int b)
+    {
+        ButtonWrapper button = buttons.get(b);
+        int res = button.getResourceID();
+        if(res != R.drawable.button_grey)
+            colors.add(button.getResourceID());
+        button.setResourceID(R.drawable.button_grey);
+        button.setConnectedButton(b);
+    }
+
+    /**
+     * Handle button pressed events.
+     * @param button button that got pressed
+     */
+    private void buttonPressed(int button)
+    {
+        if(previouslyPressedButton != -1)
+        {
+            setPlug(previouslyPressedButton, button);
+            previouslyPressedButton = -1;
+        }
+        else
+        {
+            previouslyPressedButton = button;
+            buttons.get(button).setWaiting();
+        }
+    }
+
+    /**
+     * Wrapper class for Buttons, that also stores the index of both, the connected button, as well
+     * as the button itself and resourceID of used material.
+     */
+    private static class ButtonWrapper
+    {
+        private Button button;
+        private int connectedButton;
+        private int resourceID;
+        private int index;
+
+        /**
+         * Create ButtonWrapper
+         * @param button underlying Button
+         * @param index index of the button in the buttons array
+         */
+        public ButtonWrapper(Button button, int index)
+        {
+            this.button = button;
+            this.index = index;
+            this.connectedButton = index;
+        }
+
+        /**
+         * set the index of the connected button and update buttons text
+         * @param other index
+         */
+        public void setConnectedButton(int other)
+        {
+            this.connectedButton = other;
+			Resources res = MainActivity.ActivitySingleton.getInstance().getActivity().getResources();
+            this.getButton().setText(String.format(
+					res.getText(R.string.button_plug_title).toString(),
+					""+(char) (index+65),
+					""+(char) (connectedButton+65)));
+        }
+
+        /**
+         * return index of the connected button
+         * @return index of connected button
+         */
+        public int getConnectedButton()
+        {
+            return this.connectedButton;
+        }
+
+        /**
+         * Indicate, that this button is waiting for another button to connect to.
+         */
+        public void setWaiting()
+        {
+			Resources res = MainActivity.ActivitySingleton.getInstance().getActivity().getResources();
+			this.getButton().setText(String.format(
+					res.getText(R.string.button_plug_title).toString(),
+					""+(char) (index+65)," "));
+        }
+
+        /**
+         * Set buttons background and store value in resourceID
+         * @param r resourceID of background material
+         */
+        public void setResourceID(int r)
+        {
+            button.setBackgroundResource(r);
+            this.resourceID = r;
+        }
+
+        /**
+         * get resourceID of buttons background as store in resourceID
+         * @return resourceID
+         */
+        public int getResourceID()
+        {
+            return this.resourceID;
+        }
+
+        /**
+         * Return stored button object
+         * @return button
+         */
+        public Button getButton()
+        {
+            return button;
+        }
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/layout/RingSettingsDialogBuilder.java

@@ -0,0 +1,405 @@
+/**
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.vanitasvitae.enigmandroid.layout;
+
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.util.Log;
+import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import de.vanitasvitae.enigmandroid.MainActivity;
+import de.vanitasvitae.enigmandroid.R;
+import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
+
+/**
+ * Builder for the dialog that is used to get settings for the rings
+ * Copyright (C) 2015  Paul Schaub
+ */
+public abstract class RingSettingsDialogBuilder
+{
+    protected abstract void showDialog(EnigmaStateBundle stateBundle, ArrayAdapter[] adapters, int[] rIDs, Actions actions);
+    public abstract void createRingSettingsDialog(EnigmaStateBundle stateBundle);
+
+    private static ArrayAdapter createAdapter(Integer[] array)
+    {
+        ArrayAdapter adapter = new ArrayAdapter<>(
+                MainActivity.ActivitySingleton.getInstance().getActivity(),
+                android.R.layout.simple_spinner_item, array);
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        return adapter;
+    }
+
+    /**
+     * Creates a ArrayAdapter working over an array of numbers 1 to 26.
+     * @return ArrayAdapter
+     */
+    private static ArrayAdapter createAdapter1_26()
+    {
+        Integer[] ringArray = new Integer[26];
+        for(int i=1; i<=26; i++) {ringArray[i-1] = i;}
+        return createAdapter(ringArray);
+    }
+
+
+    /**
+     * DialogBuilder for 3 Spinners and ringSettingRotor1-3
+     */
+    public static class RingSettingsDialogBuilderRotRotRot extends RingSettingsDialogBuilder
+    {
+        public void createRingSettingsDialog(final EnigmaStateBundle state)
+        {
+            this.showDialog(state,
+                    new ArrayAdapter[]{
+                            createAdapter1_26(),
+                            createAdapter1_26(),
+                            createAdapter1_26()},
+                    new int[]{
+                            R.string.hint_rotor1,
+                            R.string.hint_rotor2,
+                            R.string.hint_rotor3},
+                    new Actions3(state) {
+                        @Override
+                        protected void firstSpinnerItemSelected(int pos) {
+                            state.setRingSettingRotor1(pos);
+                        }
+
+                        @Override
+                        protected void secondSpinnerItemSelected(int pos) {
+                            state.setRingSettingRotor2(pos);
+                        }
+
+                        @Override
+                        protected void thirdSpinnerItemSelected(int pos) {
+                            state.setRingSettingRotor3(pos);
+                        }
+
+                        @Override
+                        protected int getFirstValueFromBundle() {
+                            return state.getRingSettingRotor1();
+                        }
+
+                        @Override
+                        protected int getSecondValueFromBundle() {
+                            return state.getRingSettingRotor2();
+                        }
+
+                        @Override
+                        protected int getThirdValueFromBundle() {
+                            return state.getRingSettingRotor3();
+                        }
+                    });
+        }
+
+        @Override
+        protected void showDialog(final EnigmaStateBundle stateBundle, ArrayAdapter[] adapters, int[] rIDs, Actions actions)
+        {
+            if(adapters.length != 3 || rIDs.length != 3)
+            {
+                Log.e(MainActivity.APP_ID, "RingSettingsDialogBuilderRotRotRot.showDialog():" +
+						" Length of adapters array or length of rIDs array not equal to 3!");
+            }
+            final Actions3 action = (Actions3) actions;
+            final MainActivity main = (MainActivity) MainActivity.ActivitySingleton.getInstance().getActivity();
+            View ringSettingsView = View.inflate(main, R.layout.dialog_ringsettings_3, null);
+
+            TextView ring1Title = (TextView) ringSettingsView.findViewById(R.id.dialog_text_rotor1);
+            ring1Title.setText(rIDs[0]);
+            TextView ring2Title = (TextView) ringSettingsView.findViewById(R.id.dialog_text_rotor2);
+            ring2Title.setText(rIDs[1]);
+            TextView ring3Title = (TextView) ringSettingsView.findViewById(R.id.dialog_text_rotor3);
+            ring3Title.setText(rIDs[2]);
+
+            final Spinner ring1 = (Spinner) ringSettingsView.findViewById(R.id.rotor1ring);
+            ring1.setAdapter(adapters[0]);
+            ring1.setSelection(action.getFirstValueFromBundle());
+
+            final Spinner ring2 = (Spinner) ringSettingsView.findViewById(R.id.rotor2ring);
+            ring2.setAdapter(adapters[1]);
+            ring2.setSelection(action.getSecondValueFromBundle());
+
+            final Spinner ring3 = (Spinner) ringSettingsView.findViewById(R.id.rotor3ring);
+            ring3.setAdapter(adapters[2]);
+            ring3.setSelection(action.getThirdValueFromBundle());
+
+            AlertDialog.Builder builder = new AlertDialog.Builder(main);
+            builder.setTitle(R.string.title_ring_setting);
+            builder.setView(ringSettingsView)
+                    .setCancelable(true)
+                    .setPositiveButton(R.string.dialog_positive, new DialogInterface.OnClickListener()
+                    {
+                        public void onClick(DialogInterface dialog, int id)
+                        {
+                            action.firstSpinnerItemSelected(ring1.getSelectedItemPosition());
+                            action.secondSpinnerItemSelected(ring2.getSelectedItemPosition());
+                            action.thirdSpinnerItemSelected(ring3.getSelectedItemPosition());
+                            String message = String.format(main.getResources().getString(
+															R.string.dialog_ring_settings_success),
+                                    (ring1.getSelectedItemPosition()+1) + ", " +
+                                    (ring2.getSelectedItemPosition()+1) + ", " +
+                                    (ring3.getSelectedItemPosition()+1));
+                            main.onDialogFinished(stateBundle);
+                            Toast.makeText(main, message, Toast.LENGTH_LONG).show();
+                        }
+                    })
+                    .setNegativeButton(R.string.dialog_negative, new DialogInterface.OnClickListener() {
+                        public void onClick(DialogInterface dialog, int id) {
+                            dialog.cancel();
+                            Toast.makeText(main, R.string.dialog_abort,
+                                    Toast.LENGTH_SHORT).show();
+                        }
+                    }).show();
+        }
+    }
+
+    /**
+     * DialogBuilder for 4 Spinners and ringSettingRotor1-3, ringSettingReflector
+     */
+    public static class RingSettingsDialogBuilderRotRotRotRef extends RingSettingsDialogBuilder
+    {
+        @Override
+        public void createRingSettingsDialog(final EnigmaStateBundle state) {
+            this.showDialog(state,
+                    new ArrayAdapter[]{
+                            createAdapter1_26(),
+                            createAdapter1_26(),
+                            createAdapter1_26(),
+                            createAdapter1_26()},
+                    new int[]{
+                            R.string.hint_rotor1,
+                            R.string.hint_rotor2,
+                            R.string.hint_rotor3,
+                            R.string.hint_reflector},
+                    new Actions4(state) {
+
+                        @Override
+                        protected void firstSpinnerItemSelected(int pos) {
+                            state.setRingSettingRotor1(pos);
+                        }
+
+                        @Override
+                        protected void secondSpinnerItemSelected(int pos) {
+                            state.setRingSettingRotor2(pos);
+                        }
+
+                        @Override
+                        protected void thirdSpinnerItemSelected(int pos) {
+                            state.setRingSettingRotor3(pos);
+                        }
+
+                        @Override
+                        protected int getFirstValueFromBundle() {
+                            return state.getRingSettingRotor1();
+                        }
+
+                        @Override
+                        protected int getSecondValueFromBundle() {
+                            return state.getRingSettingRotor2();
+                        }
+
+                        @Override
+                        protected int getThirdValueFromBundle() {
+                            return state.getRingSettingRotor3();
+                        }
+
+                        @Override
+                        protected void fourthSpinnerItemSelected(int pos) {
+                            state.setRingSettingReflector(pos);
+                        }
+
+                        @Override
+                        protected int getFourthValueFromBundle() {
+                            return state.getRingSettingReflector();
+                        }
+                    });
+        }
+        @Override
+        protected void showDialog(final EnigmaStateBundle stateBundle, ArrayAdapter[] adapters, int[] rIDs, Actions actions) {
+            if(adapters.length != 4 || rIDs.length != 4)
+            {
+                Log.d(MainActivity.APP_ID, "RingSettingsDialogBuilderRotRotRotRef.showDialog():" +
+                        "Length of adapters array or length of rIDs array not equal to 4!");
+            }
+            final Actions4 action = (Actions4) actions;
+            final MainActivity main = (MainActivity) MainActivity.ActivitySingleton.getInstance().getActivity();
+            View ringSettingsView = View.inflate(main, R.layout.dialog_ringsettings_4, null);
+
+            TextView ring1Title = (TextView) ringSettingsView.findViewById(R.id.dialog_text_rotor1);
+            ring1Title.setText(rIDs[0]);
+            TextView ring2Title = (TextView) ringSettingsView.findViewById(R.id.dialog_text_rotor2);
+            ring2Title.setText(rIDs[1]);
+            TextView ring3Title = (TextView) ringSettingsView.findViewById(R.id.dialog_text_rotor3);
+            ring3Title.setText(rIDs[2]);
+            TextView ring4Title = (TextView) ringSettingsView.findViewById(R.id.dialog_text_rotor4);
+            ring4Title.setText(rIDs[3]);
+
+            final Spinner ring1 = (Spinner) ringSettingsView.findViewById(R.id.rotor1ring);
+            ring1.setAdapter(adapters[0]);
+            ring1.setSelection(action.getFirstValueFromBundle());
+
+            final Spinner ring2 = (Spinner) ringSettingsView.findViewById(R.id.rotor2ring);
+            ring2.setAdapter(adapters[1]);
+            ring2.setSelection(action.getSecondValueFromBundle());
+
+            final Spinner ring3 = (Spinner) ringSettingsView.findViewById(R.id.rotor3ring);
+            ring3.setAdapter(adapters[2]);
+            ring3.setSelection(action.getThirdValueFromBundle());
+
+            final Spinner ring4 = (Spinner) ringSettingsView.findViewById(R.id.rotor4ring);
+            ring4.setAdapter(adapters[3]);
+            ring4.setSelection(action.getFourthValueFromBundle());
+
+            AlertDialog.Builder builder = new AlertDialog.Builder(main);
+            builder.setTitle(R.string.title_ring_setting);
+            builder.setView(ringSettingsView)
+                    .setCancelable(true)
+                    .setPositiveButton(R.string.dialog_positive, new DialogInterface.OnClickListener()
+                    {
+                        public void onClick(DialogInterface dialog, int id)
+                        {
+                            action.firstSpinnerItemSelected(ring1.getSelectedItemPosition());
+                            action.secondSpinnerItemSelected(ring2.getSelectedItemPosition());
+                            action.thirdSpinnerItemSelected(ring3.getSelectedItemPosition());
+                            action.fourthSpinnerItemSelected(ring4.getSelectedItemPosition());
+                            String message = String.format(main.getResources().getString(
+																   R.string.dialog_ring_settings_success),
+                                    (ring1.getSelectedItemPosition()+1) + ", " +
+                                    (ring2.getSelectedItemPosition()+1) + ", " +
+                                    (ring3.getSelectedItemPosition()+1) + ", " +
+                                    (ring4.getSelectedItemPosition()+1));
+                            main.onDialogFinished(stateBundle);
+                            Toast.makeText(main, message, Toast.LENGTH_LONG).show();
+                        }
+                    })
+                    .setNegativeButton(R.string.dialog_negative, new DialogInterface.OnClickListener() {
+                        public void onClick(DialogInterface dialog, int id) {
+                            dialog.cancel();
+                            Toast.makeText(main, R.string.dialog_abort,
+                                    Toast.LENGTH_SHORT).show();
+                        }
+                    }).show();
+        }
+    }
+
+    /**
+     * DialogBuilder for 4 Spinners and ringSettingRotor1-4
+     */
+    public static class RingSettingsDialogBuilderRotRotRotRot extends RingSettingsDialogBuilderRotRotRotRef
+    {
+        @Override
+        public void createRingSettingsDialog(final EnigmaStateBundle state) {
+            this.showDialog(state,
+                    new ArrayAdapter[]{
+                            createAdapter1_26(),
+                            createAdapter1_26(),
+                            createAdapter1_26(),
+                            createAdapter1_26()},
+                    new int[]{
+                            R.string.hint_rotor1,
+                            R.string.hint_rotor2,
+                            R.string.hint_rotor3,
+                            R.string.hint_thin_rotor},
+                    new Actions4(state) {
+
+                        @Override
+                        protected void firstSpinnerItemSelected(int pos) {
+                            state.setRingSettingRotor1(pos);
+                        }
+
+                        @Override
+                        protected void secondSpinnerItemSelected(int pos) {
+                            state.setRingSettingRotor2(pos);
+                        }
+
+                        @Override
+                        protected void thirdSpinnerItemSelected(int pos) {
+                            state.setRingSettingRotor3(pos);
+                        }
+
+                        @Override
+                        protected int getFirstValueFromBundle() {
+                            return state.getRingSettingRotor1();
+                        }
+
+                        @Override
+                        protected int getSecondValueFromBundle() {
+                            return state.getRingSettingRotor2();
+                        }
+
+                        @Override
+                        protected int getThirdValueFromBundle() {
+                            return state.getRingSettingRotor3();
+                        }
+
+                        @Override
+                        protected void fourthSpinnerItemSelected(int pos) {
+                            state.setRingSettingRotor4(pos);
+                        }
+
+                        @Override
+                        protected int getFourthValueFromBundle() {
+                            return state.getRingSettingRotor4();
+                        }
+                    });
+        }
+    }
+
+    /**
+     * Abstract class that defines how Spinners correspond to the EnigmaStateBundle
+     */
+    public static abstract class Actions
+    {
+        final EnigmaStateBundle stateBundle;
+        public Actions(EnigmaStateBundle bundle)
+        {
+            this.stateBundle = bundle;
+        }
+    }
+
+    /**
+     * Abstract class that defines, how the 3 Spinners correspond to 3 values in the
+     * EnigmaStateBundle
+     */
+    public static abstract class Actions3 extends Actions
+    {
+        public Actions3(EnigmaStateBundle bundle)
+        {
+            super(bundle);
+        }
+        protected abstract void firstSpinnerItemSelected(int pos);
+        protected abstract void secondSpinnerItemSelected(int pos);
+        protected abstract void thirdSpinnerItemSelected(int pos);
+        protected abstract int getFirstValueFromBundle();
+        protected abstract int getSecondValueFromBundle();
+        protected abstract int getThirdValueFromBundle();
+    }
+
+    /**
+     * Extension of Actions3 which forces implementing classes to implement methods for the fourth
+     * Spinner.
+     */
+    public static abstract class Actions4 extends Actions3
+    {
+        public Actions4(EnigmaStateBundle bundle)
+        {
+            super(bundle);
+        }
+        protected abstract void fourthSpinnerItemSelected(int pos);
+        protected abstract int getFourthValueFromBundle();
+    }
+}

app/src/main/java/de/vanitasvitae/enigmandroid/rotors/Reflector.java

@@ -1,93 +0,0 @@
-package de.vanitasvitae.enigmandroid.rotors;
-
-/**
- * Created by vanitas on 11.08.15.
- */
-public class Reflector
-{
-    protected String name;
-    protected int type;
-    protected Integer[] connections;
-
-    protected Reflector(String name, int type, Integer[] connections)
-    {
-        this.name = name;
-        this.type = type;
-        this.connections = connections;
-    }
-
-    public static Reflector createReflectorA()
-    {
-        return new ReflectorA();
-    }
-
-    public static Reflector createReflectorB()
-    {
-        return new ReflectorB();
-    }
-
-    public static Reflector createReflectorC()
-    {
-        return new ReflectorC();
-    }
-
-    public static Reflector createReflector(int type)
-    {
-        switch (type)
-        {
-            case 1: return createReflectorA();
-            case 2: return createReflectorB();
-            default: return createReflectorC();
-        }
-    }
-
-    public int encrypt(int input)
-    {
-        return this.connections[normalize(input)];
-    }
-
-    public int getType()
-    {
-        return this.type;
-    }
-
-    public String getName()
-    {
-        return this.name;
-    }
-
-    private int getRotorSize()
-    {
-        return this.connections.length;
-    }
-
-    private int normalize(int input)
-    {
-        return (input + this.getRotorSize()) % this.getRotorSize();
-    }
-
-    private static class ReflectorA extends Reflector
-    {
-        public ReflectorA()
-        {
-            super("A", 1, new Integer[]{4, 9, 12, 25, 0, 11, 24, 23, 21, 1, 22, 5, 2, 17, 16, 20, 14, 13, 19, 18, 15, 8, 10, 7, 6, 3});
-        }
-    }
-
-    private static class ReflectorB extends Reflector
-    {
-        public ReflectorB()
-        {
-            super("B", 2, new Integer[]{24, 17, 20, 7, 16, 18, 11, 3, 15, 23, 13, 6, 14, 10, 12, 8, 4, 1, 5, 25, 2, 22, 21, 9, 0, 19});
-        }
-    }
-
-    private static class ReflectorC extends Reflector
-    {
-        public ReflectorC()
-        {
-            super("C", 3, new Integer[]{5, 21, 15, 9, 8, 0, 14, 24, 4, 3, 17, 25, 23, 22, 6, 2, 19, 10, 20, 16, 18, 1, 13, 12, 7, 11});
-        }
-    }
-
-}

app/src/main/java/de/vanitasvitae/enigmandroid/rotors/Rotor.java

@@ -1,208 +0,0 @@
-package de.vanitasvitae.enigmandroid.rotors;
-
-/**
- * Created by vanitas on 11.08.15.
- */
-public class Rotor
-{
-    protected String name;
-    protected int type;
-    protected Integer[] connections;
-    protected Integer[] reversedConnections;
-    protected int turnOverNotch;
-
-    protected int ringSetting;
-    protected int rotation;
-
-    protected Rotor(String name, int type, Integer[] connections, Integer[] reversedConnections,
-                    int turnOverNotch, int ringSetting, int rotation)
-    {
-        this.name = name;
-        this.type = type;
-        this.connections = connections;
-        this.reversedConnections = reversedConnections;
-        this.turnOverNotch = turnOverNotch;
-        this.ringSetting = ringSetting;
-        this.rotation = rotation;
-    }
-
-    public static Rotor createRotor(int type, int ringSetting, int rotation)
-    {
-        switch (type)
-        {
-            case 1: return createRotorI(ringSetting, rotation);
-            case 2: return createRotorII(ringSetting, rotation);
-            case 3: return createRotorIII(ringSetting, rotation);
-            case 4: return createRotorIV(ringSetting, rotation);
-            default: return createRotorV(ringSetting, rotation);
-        }
-    }
-
-    public static Rotor createRotorI(int ringSetting, int rotation)
-    {
-        return new RotorI(ringSetting, rotation);
-    }
-
-    public static Rotor createRotorII(int ringSetting, int rotation)
-    {
-        return new RotorII(ringSetting, rotation);
-    }
-
-    public static Rotor createRotorIII(int ringSetting, int rotation)
-    {
-        return new RotorIII(ringSetting, rotation);
-    }
-
-    public static Rotor createRotorIV(int ringSetting, int rotation)
-    {
-        return new RotorIV(ringSetting, rotation);
-    }
-
-    public static Rotor createRotorV(int ringSetting, int rotation)
-    {
-        return new RotorV(ringSetting, rotation);
-    }
-
-    public int encryptForward(int input)
-    {
-        return this.connections[normalize(input)];
-    }
-
-    public int encryptBackward(int input)
-    {
-        return this.reversedConnections[normalize(input)];
-    }
-
-    public int getType()
-    {
-        return this.type;
-    }
-
-    public int getRotation()
-    {
-        return this.rotation - this.getRingSetting();
-    }
-
-    /**
-     * increment rotation of the rotor by one.
-     */
-    public void rotate()
-    {
-        this.rotation = normalize(this.getRotation()+1);
-    }
-
-    /**
-     * Return true, if rotor is at a position, where it turns over the next rotor
-     *
-     * @return boolean
-     */
-    public boolean isAtTurnoverPosition()
-    {
-        return this.rotation == this.turnOverNotch;
-    }
-
-    /**
-     * The Double Turn Anomaly (deutsch: Doppelsprung Anomalie) is an anomaly in the rotor movement
-     * caused by the mechanical implementation of the enigma.
-     * Whenever the rightmost rotor turns the middle rotor AND the middle rotor is only one move
-     * from turning the leftmost rotor, the middle rotor turns again with the next character.
-     * So technically there are only 26*25*26 possible rotor settings for any but firmly 3 rotors.
-     *
-     * @return boolean
-     */
-    public boolean doubleTurnAnomaly()
-    {
-        return this.rotation == this.turnOverNotch - 1;
-    }
-
-    @SuppressWarnings("unused")
-    /**
-     * Returns the position of the turnover notch
-     *
-     * @return turnOver
-     */
-    public int getTurnOver()
-    {
-        return this.turnOverNotch;
-    }
-
-    @SuppressWarnings("unused")
-    /**
-     * Return ringSettings of the rotor
-     * @return ringSetting
-     */
-    public int getRingSetting()
-    {
-        return this.ringSetting;
-    }
-
-    public String getName()
-    {
-        return this.name;
-    }
-
-    public int getRotorSize()
-    {
-        return this.connections.length;
-    }
-
-    public int normalize(int input)
-    {
-        return (input + this.getRotorSize()) % this.getRotorSize();
-    }
-
-    private static class RotorI extends Rotor
-    {
-        public RotorI(int ringSetting, int rotation)
-        {
-            super("I", 1,
-                    new Integer[]{4, 10, 12, 5, 11, 6, 3, 16, 21, 25, 13, 19, 14, 22, 24, 7, 23, 20, 18, 15, 0, 8, 1, 17, 2, 9},
-                    new Integer[]{20, 22, 24, 6, 0, 3, 5, 15, 21, 25, 1, 4, 2, 10, 12, 19, 7, 23, 18, 11, 17, 8, 13, 16, 14, 9},
-                    17, ringSetting, rotation);
-        }
-    }
-
-    private static class RotorII extends Rotor
-    {
-        public RotorII(int ringSetting, int rotation)
-        {
-            super("II", 2,
-                    new Integer[]{0, 9, 3, 10, 18, 8, 17, 20, 23, 1, 11, 7, 22, 19, 12, 2, 16, 6, 25, 13, 15, 24, 5, 21, 14, 4},
-                    new Integer[]{0, 9, 15, 2, 25, 22, 17, 11, 5, 1, 3, 10, 14, 19, 24, 20, 16, 6, 4, 13, 7, 23, 12, 8, 21, 18},
-                    5, ringSetting, rotation);
-        }
-    }
-
-    private static class RotorIII extends Rotor
-    {
-        public RotorIII(int ringSetting, int rotation)
-        {
-            super("III", 3,
-                    new Integer[]{1, 3, 5, 7, 9, 11, 2, 15, 17, 19, 23, 21, 25, 13, 24, 4, 8, 22, 6, 0, 10, 12, 20, 18, 16, 14},
-                    new Integer[]{19, 0, 6, 1, 15, 2, 18, 3, 16, 4, 20, 5, 21, 13, 25, 7, 24, 8, 23, 9, 22, 11, 17, 10, 14, 12},
-                    22, ringSetting, rotation);
-        }
-    }
-
-    private static class RotorIV extends Rotor
-    {
-        public RotorIV(int ringSetting, int rotation)
-        {
-            super("IV", 4,
-                    new Integer[]{4, 18, 14, 21, 15, 25, 9, 0, 24, 16, 20, 8, 17, 7, 23, 11, 13, 5, 19, 6, 10, 3, 2, 12, 22, 1},
-                    new Integer[]{7, 25, 22, 21, 0, 17, 19, 13, 11, 6, 20, 15, 23, 16, 2, 4, 9, 12, 1, 18, 10, 3, 24, 14, 8, 5},
-                    10, ringSetting, rotation);
-        }
-    }
-
-    private static class RotorV extends Rotor
-    {
-        public RotorV(int ringSetting, int rotation)
-        {
-            super("V", 5,
-                    new Integer[]{21, 25, 1, 17, 6, 8, 19, 24, 20, 15, 18, 3, 13, 7, 11, 23, 0, 22, 12, 9, 16, 14, 5, 4, 2, 10},
-                    new Integer[]{16, 2, 24, 11, 23, 22, 4, 13, 5, 19, 25, 14, 18, 12, 21, 9, 20, 3, 10, 6, 8, 0, 17, 15, 7, 1},
-                    0, ringSetting, rotation);
-        }
-    }
-}

app/src/main/res/drawable/button_berry.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#ea138f" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#810e41"
+                android:endColor="#930e52"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#52082e" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_black.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#444552" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#23262e"
+                android:endColor="#24252e"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#181719" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_blue.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#b94b52e4" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#b94b52e4"
+                android:endColor="#a74e55ff"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#1e2153" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_brown.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#de9307" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#864f07"
+                android:endColor="#9c6007"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#462606" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_cyan.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#15dbdc" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#139e9f"
+                android:endColor="#13aeaf"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#115c5d" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_elder.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#c895ad" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#815f6b"
+                android:endColor="#8e6a77"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#53353f" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_green.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#6aff46" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#54bb32"
+                android:endColor="#56cc33"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#3b7727" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_grey.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#666670" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#3f4046"
+                android:endColor="#3c3d43"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#181719" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_olive.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#a4e82b" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#4f7d1d"
+                android:endColor="#5f8e1e"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#365013" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_pink.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#95ff168e" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#d1156d"
+                android:endColor="#e5157f"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#8c0e49" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_purple.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#cf54ff" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#9944c2"
+                android:endColor="#de9944c2"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#703290" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_red.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#ff4f52" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#d9ef241e"
+                android:endColor="#bdef3f3f"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#5a1717" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/button_yellow.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+    <item android:state_pressed="true" >
+        <shape>
+            <solid
+                android:color="#cbfffc0f" />
+            <stroke
+                android:width="1dp"
+                android:color="#222222" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <gradient
+                android:startColor="#b7b40e"
+                android:endColor="#d2cf0e"
+                android:angle="270" />
+            <stroke
+                android:width="1dp"
+                android:color="#5c5903" />
+            <corners
+                android:radius="4dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>

app/src/main/res/layout-land/activity_main_d.xml

@@ -0,0 +1,123 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context=".MainActivity">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_names_1">
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_reflector_position"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor3_position"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor2_position"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor1_position"/>
+    </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_1"
+        android:layout_below="@+id/lin_lay_names_1">
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/reflector_position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor3position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor2position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor1position">
+        </Spinner>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/lin_lay_1"
+        android:layout_above="@+id/buttons_lay"
+        android:id="@+id/text_layer">
+        <EditText
+            android:layout_width="0dp"
+            android:layout_weight=".50"
+            android:layout_height="match_parent"
+            android:id="@+id/input"
+            android:inputType="textNoSuggestions|textMultiLine"
+            android:hint="@string/hint_enigma_type_here" />
+
+        <EditText
+            android:layout_width="0dp"
+            android:layout_weight=".50"
+            android:layout_height="match_parent"
+            android:inputType="none"
+            android:textIsSelectable="true"
+            android:id="@+id/output"
+            android:hint="@string/hint_enigma_code"/>
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:id="@+id/buttons_lay"
+        android:layout_alignParentBottom="true"
+        android:orientation="horizontal">
+
+        <Button
+            android:layout_width="0dp"
+            android:layout_weight="50"
+            android:layout_height="match_parent"
+            android:id="@+id/button_reflector"
+            android:text="@string/hint_enigma_reflector_wiring"
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle"/>
+        <Button
+            android:layout_width="0dp"
+            android:layout_weight="50"
+            android:layout_height="match_parent"
+            android:id="@+id/button_crypt"
+            android:onClick="doCrypto"
+            android:text="@string/button_crypt"
+            android:background="@drawable/button_orange"
+            tools:ignore="ButtonStyle"/>
+
+    </LinearLayout>
+
+</RelativeLayout>

app/src/main/res/layout-land/activity_main_g_k_r_t.xml

@@ -0,0 +1,144 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context=".MainActivity">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_names_1">
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor3"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor2"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor1"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_reflector_position"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor3_position"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor2_position"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor1_position"/>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_1"
+        android:layout_below="@+id/lin_lay_names_1">
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor3">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor2">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor1">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/reflector_position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor3position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor2position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor1position">
+        </Spinner>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/lin_lay_1"
+        android:layout_above="@+id/buttons_lay"
+        android:id="@+id/text_layer">
+        <EditText
+            android:layout_width="0dp"
+            android:layout_weight=".50"
+            android:layout_height="match_parent"
+            android:id="@+id/input"
+            android:inputType="textNoSuggestions|textMultiLine"
+            android:hint="@string/hint_enigma_type_here" />
+
+        <EditText
+            android:layout_width="0dp"
+            android:layout_weight=".50"
+            android:layout_height="match_parent"
+            android:inputType="none"
+            android:textIsSelectable="true"
+            android:id="@+id/output"
+            android:hint="@string/hint_enigma_code"/>
+
+        </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:id="@+id/buttons_lay"
+        android:layout_alignParentBottom="true">
+        <Button
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:id="@+id/button_crypt"
+            android:onClick="doCrypto"
+            android:text="@string/button_crypt"
+            android:background="@drawable/button_orange"
+            />
+        </LinearLayout>
+
+</RelativeLayout>

app/src/main/res/layout-land/activity_main_i_m3.xml

@@ -119,41 +119,13 @@
 
     </LinearLayout>
 
-    <!-- Plugboard and button-->
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:id="@+id/buttons_lay"
-        android:layout_below="@+id/lin_lay_1"
-        android:orientation="horizontal">
-
-        <EditText
-            android:layout_width="0dp"
-            android:layout_weight="75"
-            android:layout_height="match_parent"
-            android:id="@+id/plugboard"
-            android:hint="@string/hint_enigma_plugboard">
-
-        </EditText>
-
-        <Button
-            android:layout_width="0dp"
-            android:layout_weight="25"
-            android:layout_height="wrap_content"
-            android:id="@+id/button_crypt"
-            android:onClick="doCrypto"
-            android:text="@string/button_crypt"
-            android:background="@drawable/button"/>
-
-    </LinearLayout>
-
     <!-- Textboxes for input and output -->
 
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_below="@+id/buttons_lay"
-        android:layout_alignParentBottom="true"
+        android:layout_below="@+id/lin_lay_1"
+        android:layout_above="@id/buttons_lay"
         android:id="@+id/text_layer">
 
         <EditText
@@ -174,4 +146,34 @@
 
         </LinearLayout>
 
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:id="@+id/buttons_lay"
+        android:layout_alignParentBottom="true"
+        android:orientation="horizontal">
+
+        <Button
+            android:layout_width="0dp"
+            android:layout_weight="50"
+            android:layout_height="match_parent"
+            android:layout_gravity="bottom"
+            android:text="@string/title_plugboard_dialog"
+            android:background="@drawable/button_grey"
+            android:id="@+id/button_plugboard"
+            tools:ignore="ButtonStyle"/>
+
+        <Button
+            android:layout_width="0dp"
+            android:layout_weight="50"
+            android:layout_height="match_parent"
+            android:layout_gravity="bottom"
+            android:id="@+id/button_crypt"
+            android:onClick="doCrypto"
+            android:text="@string/button_crypt"
+            android:background="@drawable/button_orange"
+            tools:ignore="ButtonStyle"/>
+
+    </LinearLayout>
+
 </RelativeLayout>

app/src/main/res/layout-land/activity_main_m4.xml

@@ -0,0 +1,201 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context=".MainActivity">
+
+    <!-- Hints of the spinners-->
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_names_1">
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_reflector"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_thin_rotor"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor3"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor2"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor1"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_thin_rotor_position"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor3_position"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor2_position"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor1_position"/>
+
+    </LinearLayout>
+
+    <!-- Spinners -->
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_1"
+        android:layout_below="@+id/lin_lay_names_1">
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/reflector">
+        </Spinner>
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/thin_rotor"/>
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor3">
+        </Spinner>
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor2">
+        </Spinner>
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor1">
+        </Spinner>
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/thin_rotor_position">
+        </Spinner>
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor3position">
+        </Spinner>
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor2position">
+        </Spinner>
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor1position">
+        </Spinner>
+
+    </LinearLayout>
+
+    <!-- Textboxes for input and output -->
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/lin_lay_1"
+        android:layout_above="@id/buttons_lay"
+        android:id="@+id/text_layer">
+
+        <EditText
+            android:layout_width="0dp"
+            android:layout_weight=".50"
+            android:layout_height="match_parent"
+            android:id="@+id/input"
+            android:hint="@string/hint_enigma_type_here" />
+
+        <EditText
+            android:layout_width="0dp"
+            android:layout_weight=".50"
+            android:layout_height="match_parent"
+            android:inputType="none"
+            android:textIsSelectable="true"
+            android:id="@+id/output"
+            android:hint="@string/hint_enigma_code"/>
+
+        </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:id="@+id/buttons_lay"
+        android:layout_alignParentBottom="true"
+        android:orientation="horizontal">
+
+        <Button
+            android:layout_width="0dp"
+            android:layout_weight="50"
+            android:layout_height="match_parent"
+            android:id="@+id/button_plugboard"
+            android:text="@string/title_plugboard_dialog"
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle"/>
+        <Button
+            android:layout_width="0dp"
+            android:layout_weight="50"
+            android:layout_height="match_parent"
+            android:id="@+id/button_crypt"
+            android:onClick="doCrypto"
+            android:text="@string/button_crypt"
+            android:background="@drawable/button_orange"
+            tools:ignore="ButtonStyle"/>
+
+    </LinearLayout>
+
+
+</RelativeLayout>

app/src/main/res/layout-land/dialog_plugs.xml

@@ -0,0 +1,254 @@
+<RelativeLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:paddingStart="5dp"
+    android:paddingEnd="5dp">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/first_row">
+
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/Q"
+            android:text="Q: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/W"
+            android:text="W: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/E"
+            android:text="E: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/R"
+            android:text="R: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/T"
+            android:text="T: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/Z"
+            android:text="Z: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/U"
+            android:text="U: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/I"
+            android:text="I: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/O"
+            android:text="O: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:layout_below="@id/first_row"
+        android:id="@+id/second_row">
+
+        <android.support.v4.widget.Space
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/A"
+            android:text="A: "
+            android:background="@drawable/button_grey"
+            tools:ignore="HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/S"
+            android:text="S: "
+            android:background="@drawable/button_grey"
+            tools:ignore="HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/D"
+            android:text="D: "
+            android:background="@drawable/button_grey"
+            tools:ignore="HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/F"
+            android:text="F: "
+            android:background="@drawable/button_grey"
+            tools:ignore="HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/G"
+            android:text="G: "
+            android:background="@drawable/button_grey"
+            tools:ignore="HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/H"
+            android:text="H: "
+            android:background="@drawable/button_grey"
+            tools:ignore="HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/J"
+            android:text="J: "
+            android:background="@drawable/button_grey"
+            tools:ignore="HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/K"
+            android:text="K: "
+            android:background="@drawable/button_grey"
+            tools:ignore="HardcodedText" />
+        <android.support.v4.widget.Space
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:layout_below="@id/second_row"
+        android:id="@+id/third_row">
+
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/P"
+            android:text="P: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/Y"
+            android:text="Y: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/X"
+            android:text="X: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/C"
+            android:text="C: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/V"
+            android:text="V: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/B"
+            android:text="B: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/N"
+            android:text="N: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/M"
+            android:text="M: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+        <Button
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:id="@+id/L"
+            android:text="L: "
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle,HardcodedText" />
+
+    </LinearLayout>
+
+</RelativeLayout>

app/src/main/res/layout-v14/dialog_about.xml

@@ -0,0 +1,88 @@
+<ScrollView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    android:paddingStart="5dp"
+    android:paddingEnd="5dp">
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:id="@+id/ringstellung_layout_hint">
+
+        <!-- About Enigma. -->
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@android:style/TextAppearance.Medium"
+            android:text="@string/title_about_dialog"
+            android:id="@+id/title_section_app_description_text"/>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@android:style/TextAppearance.Holo.Small"
+            android:text="@string/description_text"
+            android:id="@+id/about_app_description"/>
+
+        <!-- About Version -->
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@android:style/TextAppearance.Holo.Medium"
+            android:text="@string/action_version"
+            android:id="@+id/title_section_version"/>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@android:style/TextAppearance.Holo.Small"
+            android:id="@+id/about_version_section"/>
+
+        <!-- About How To -->
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@android:style/TextAppearance.Holo.Medium"
+            android:text="@string/title_section_how_to_use"
+            android:id="@+id/title_section_how_to_use"/>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@android:style/TextAppearance.Holo.Small"
+            android:text="@string/section_how_to_use"
+            android:id="@+id/section_how_to_use"/>
+
+        <!-- About Developer -->
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@android:style/TextAppearance.Holo.Medium"
+            android:text="@string/title_section_developer"
+            android:id="@+id/title_section_developer_text"/>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@android:style/TextAppearance.Holo.Small"
+            android:text="@string/section_developer"
+            android:id="@+id/about_developer_section"/>
+
+        <!-- About Disclaimer -->
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@android:style/TextAppearance.Holo.Medium"
+            android:text="@string/title_section_disclaimer"
+            android:id="@+id/title_section_disclaimer_text"/>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@android:style/TextAppearance.Holo.Small"
+            android:text="@string/section_disclaimer"
+            android:id="@+id/about_disclaimer_section"/>
+
+    </LinearLayout>
+</ScrollView>

app/src/main/res/layout/activity_main_d.xml

@@ -0,0 +1,123 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context=".MainActivity">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_names_2">
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_reflector_position"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor3_position"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor2_position"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor1_position"/>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_2"
+        android:layout_below="@+id/lin_lay_names_2">
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/reflector_position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor3position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor2position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor1position">
+        </Spinner>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/lin_lay_2"
+        android:layout_above="@+id/buttons_lay"
+        android:id="@+id/text_layer">
+        <EditText
+            android:layout_width="0dp"
+            android:layout_weight=".50"
+            android:layout_height="match_parent"
+            android:id="@+id/input"
+            android:inputType="textNoSuggestions|textMultiLine"
+            android:hint="@string/hint_enigma_type_here" />
+
+        <EditText
+            android:layout_width="0dp"
+            android:layout_weight=".50"
+            android:layout_height="match_parent"
+            android:inputType="none"
+            android:textIsSelectable="true"
+            android:id="@+id/output"
+            android:hint="@string/hint_enigma_code"/>
+
+        </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:id="@+id/buttons_lay"
+        android:layout_alignParentBottom="true">
+        <Button
+            android:layout_width="0dp"
+            android:layout_weight="50"
+            android:layout_height="match_parent"
+            android:id="@+id/button_reflector"
+            android:text="@string/hint_enigma_reflector_wiring"
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle"/>
+        <Button
+            android:layout_width="0dp"
+            android:layout_weight="50"
+            android:layout_height="match_parent"
+            android:id="@+id/button_crypt"
+            android:onClick="doCrypto"
+            android:text="@string/button_crypt"
+            android:background="@drawable/button_orange"
+            tools:ignore="ButtonStyle"/>
+        </LinearLayout>
+
+</RelativeLayout>

app/src/main/res/layout/activity_main_g_k_r_t.xml

@@ -0,0 +1,162 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context=".MainActivity">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_names_1">
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor3"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor2"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor1"/>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_1"
+        android:layout_below="@+id/lin_lay_names_1">
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor3">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor2">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor1">
+        </Spinner>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:layout_below="@+id/lin_lay_1"
+        android:id="@+id/lin_lay_names_2">
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_reflector_position"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor3_position"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor2_position"/>
+        <TextView
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_rotor1_position"/>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:id="@+id/lin_lay_2"
+        android:layout_below="@+id/lin_lay_names_2">
+
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/reflector_position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor3position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor2position">
+        </Spinner>
+        <Spinner
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:id="@+id/rotor1position">
+        </Spinner>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/lin_lay_2"
+        android:layout_above="@+id/buttons_lay"
+        android:id="@+id/text_layer">
+        <EditText
+            android:layout_width="0dp"
+            android:layout_weight=".50"
+            android:layout_height="match_parent"
+            android:id="@+id/input"
+            android:inputType="textNoSuggestions|textMultiLine"
+            android:hint="@string/hint_enigma_type_here" />
+
+        <EditText
+            android:layout_width="0dp"
+            android:layout_weight=".50"
+            android:layout_height="match_parent"
+            android:inputType="none"
+            android:textIsSelectable="true"
+            android:id="@+id/output"
+            android:hint="@string/hint_enigma_code"/>
+
+        </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:id="@+id/buttons_lay"
+        android:layout_alignParentBottom="true">
+        <Button
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:id="@+id/button_crypt"
+            android:onClick="doCrypto"
+            android:text="@string/button_crypt"
+            android:background="@drawable/button_orange"
+            />
+        </LinearLayout>
+
+</RelativeLayout>

app/src/main/res/layout/activity_main_i_m3.xml

@@ -78,7 +78,7 @@
         android:layout_below="@+id/lin_lay_1"
         android:id="@+id/lin_lay_names_2">
 
-        <Space
+        <android.support.v4.widget.Space
             android:layout_width="0dp"
             android:layout_weight=".125"
             android:layout_height="wrap_content" />
@@ -99,7 +99,7 @@
             android:layout_weight=".25"
             android:layout_height="wrap_content"
             android:text="@string/hint_rotor1_position"/>
-        <Space
+        <android.support.v4.widget.Space
             android:layout_width="0dp"
             android:layout_weight=".125"
             android:layout_height="wrap_content" />
@@ -112,7 +112,7 @@
         android:id="@+id/lin_lay_2"
         android:layout_below="@+id/lin_lay_names_2">
 
-        <Space
+        <android.support.v4.widget.Space
             android:layout_width="0dp"
             android:layout_weight=".125"
             android:layout_height="wrap_content" />
@@ -134,23 +134,16 @@
             android:layout_height="wrap_content"
             android:id="@+id/rotor1position">
         </Spinner>
-        <Space
+        <android.support.v4.widget.Space
             android:layout_width="0dp"
             android:layout_weight=".125"
             android:layout_height="wrap_content" />
     </LinearLayout>
 
-    <EditText
-        android:layout_width="match_parent"
-        android:layout_height="30pt"
-        android:id="@+id/plugboard"
-        android:hint="@string/hint_enigma_plugboard"
-        android:layout_below="@+id/lin_lay_2"/>
-
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_below="@+id/plugboard"
+        android:layout_below="@+id/lin_lay_2"
         android:layout_above="@+id/buttons_lay"
         android:id="@+id/text_layer">
         <EditText
@@ -158,13 +151,14 @@
             android:layout_weight=".50"
             android:layout_height="match_parent"
             android:id="@+id/input"
+            android:inputType="textNoSuggestions|textMultiLine"
             android:hint="@string/hint_enigma_type_here" />
 
         <EditText
             android:layout_width="0dp"
             android:layout_weight=".50"
             android:layout_height="match_parent"
-            android:editable="false"
+            android:inputType="none"
             android:textIsSelectable="true"
             android:id="@+id/output"
             android:hint="@string/hint_enigma_code"/>
@@ -176,14 +170,22 @@
         android:id="@+id/buttons_lay"
         android:layout_alignParentBottom="true">
         <Button
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_below="@+id/text_layer"
+            android:layout_width="0dp"
+            android:layout_weight="50"
+            android:text="@string/title_plugboard_dialog"
+            android:id="@+id/button_plugboard"
+            android:layout_height="match_parent"
+            android:background="@drawable/button_grey"
+            tools:ignore="ButtonStyle"/>
+        <Button
+            android:layout_width="0dp"
+            android:layout_weight="50"
+            android:layout_height="match_parent"
             android:id="@+id/button_crypt"
             android:onClick="doCrypto"
             android:text="@string/button_crypt"
-            android:background="@drawable/button"
-            />
+            android:background="@drawable/button_orange"
+            tools:ignore="ButtonStyle"/>
         </LinearLayout>
 
 </RelativeLayout>