Add Enable/Disable Carbon IQs

smack-experimental/src/main/java/org/jivesoftware/smackx/carbons/CarbonManager.java

@@ -34,6 +34,8 @@ import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smack.packet.Message;
 import org.jivesoftware.smack.packet.Packet;
 import org.jivesoftware.smackx.carbons.packet.CarbonExtension;
+import org.jivesoftware.smackx.carbons.packet.Carbon;
+import org.jivesoftware.smackx.carbons.packet.CarbonExtension.Private;
 import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
 
 /**
@@ -85,13 +87,13 @@ public class CarbonManager extends Manager {
     }
 
     private static IQ carbonsEnabledIQ(final boolean new_state) {
-        IQ setIQ = new IQ() {
-            public String getChildElementXML() {
-                return "<" + (new_state? "enable" : "disable") + " xmlns='" + CarbonExtension.NAMESPACE + "'/>";
-            }
-        };
-        setIQ.setType(IQ.Type.set);
-        return setIQ;
+        IQ request;
+        if (new_state) {
+            request = new Carbon.Enable();
+        } else {
+            request = new Carbon.Disable();
+        }
+        return request;
     }
 
     /**
@@ -187,8 +189,10 @@ public class CarbonManager extends Manager {
      * Mark a message as "private", so it will not be carbon-copied.
      *
      * @param msg Message object to mark private
+     * @deprecated use {@link Private#addTo(Message)}
      */
+    @Deprecated
     public static void disableCarbons(Message msg) {
-        msg.addExtension(new CarbonExtension.Private());
+        msg.addExtension(Private.INSTANCE);
     }
 }

smack-experimental/src/main/java/org/jivesoftware/smackx/carbons/packet/Carbon.java

@@ -0,0 +1,52 @@
+/**
+ *
+ * Copyright © 2014 Florian Schmaus
+ *
+ * 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 org.jivesoftware.smackx.carbons.packet;
+
+import org.jivesoftware.smack.packet.IQ;
+
+/**
+ * Carbon IQs
+ */
+public class Carbon {
+    public static final String NAMESPACE = "urn:xmpp:carbons:2";
+
+    public static class Enable extends IQ {
+        public static final String ELEMENT = "enable";
+
+        public Enable() {
+            setType(Type.set);
+        }
+
+        @Override
+        public String getChildElementXML() {
+            return "<" + ELEMENT + " xmlns='" + NAMESPACE + "'/>";
+        }
+    }
+
+    public static class Disable extends IQ {
+        public static final String ELEMENT = "disable";
+
+        public Disable() {
+            setType(Type.set);
+        }
+
+        @Override
+        public String getChildElementXML() {
+            return "<" + ELEMENT + " xmlns='" + NAMESPACE + "'/>";
+        }
+    }
+}

smack-experimental/src/main/java/org/jivesoftware/smackx/carbons/packet/CarbonExtension.java

@@ -33,7 +33,7 @@ import org.jivesoftware.smackx.forward.Forwarded;
  * @author Georg Lukas
  */
 public class CarbonExtension implements PacketExtension {
-    public static final String NAMESPACE = "urn:xmpp:carbons:2";
+    public static final String NAMESPACE = Carbon.NAMESPACE;
 
     private final Direction dir;
     private final Forwarded fwd;
@@ -97,9 +97,9 @@ public class CarbonExtension implements PacketExtension {
      * @return a Carbon if available, null otherwise.
      */
     public static CarbonExtension getFrom(Message msg) {
-        CarbonExtension cc = msg.getExtension(Direction.received.name(), CarbonExtension.NAMESPACE);
+        CarbonExtension cc = msg.getExtension(Direction.received.name(), NAMESPACE);
         if (cc == null)
-            cc = msg.getExtension(Direction.sent.name(), CarbonExtension.NAMESPACE);
+            cc = msg.getExtension(Direction.sent.name(), NAMESPACE);
         return cc;
     }
 
@@ -116,8 +116,12 @@ public class CarbonExtension implements PacketExtension {
      * extension to any message will disallow that message from being copied. 
      */
     public static class Private implements PacketExtension {
+        public static final Private INSTANCE = new Private();
         public static final String ELEMENT = "private";
 
+        private Private() {
+        }
+
         @Override
         public String getElementName() {
             return ELEMENT;
@@ -125,12 +129,22 @@ public class CarbonExtension implements PacketExtension {
 
         @Override
         public String getNamespace() {
-            return CarbonExtension.NAMESPACE;
+            return NAMESPACE;
         }
 
         @Override
         public String toXML() {
-            return "<" + ELEMENT + " xmlns='" + CarbonExtension.NAMESPACE + "'/>";
+            return "<" + ELEMENT + " xmlns='" + NAMESPACE + "'/>";
+        }
+
+        /**
+         * Marks a message "private", so that it will not be carbon-copied, by adding private packet
+         * extension to the message.
+         * 
+         * @param message the message to add the private extension to
+         */
+        public static void addTo(Message message) {
+            message.addExtension(INSTANCE);
         }
     }
 }