Update opoc

app/build.gradle

@@ -108,11 +108,13 @@ dependencies {
     implementation "com.android.support:support-v4:${version_library_appcompat}"
     implementation "com.android.support:customtabs:${version_library_appcompat}"
     implementation "com.android.support:cardview-v7:${version_library_appcompat}"
+    implementation "com.android.support:preference-v7:${version_library_appcompat}"
 
     // UI libraries
     implementation "com.github.DASAR:ShiftColorPicker:v0.5"
 
     // Tool libraries
+    implementation 'commons-io:commons-io:2.6'
     implementation "info.guardianproject.netcipher:netcipher:${version_library_netcipher}"
     implementation "info.guardianproject.netcipher:netcipher-webkit:${version_library_netcipher}"
     implementation "com.jakewharton:butterknife:${version_library_butterknife}"

app/src/main/java/net/gsantner/opoc/activity/GsFragmentBase.java

@@ -16,7 +16,10 @@ import android.support.annotation.LayoutRes;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v4.app.Fragment;
+import android.util.Log;
 import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
@@ -33,6 +36,7 @@ public abstract class GsFragmentBase extends Fragment {
 
     protected ContextUtils _cu;
     protected Bundle _savedInstanceState = null;
+    protected Menu _fragmentMenu;
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -51,6 +55,9 @@ public abstract class GsFragmentBase extends Fragment {
         _cu = new ContextUtils(inflater.getContext());
         _cu.setAppLanguage(getAppLanguage());
         _savedInstanceState = savedInstanceState;
+        if (getLayoutResId() == 0) {
+            Log.e(getClass().getCanonicalName(), "Error: GsFragmentbase.onCreateview: Returned 0 for getLayoutResId");
+        }
         View view = inflater.inflate(getLayoutResId(), container, false);
         ButterKnife.bind(this, view);
         return view;
@@ -126,4 +133,14 @@ public abstract class GsFragmentBase extends Fragment {
             }
         }
     }
+
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        super.onCreateOptionsMenu(menu, inflater);
+        _fragmentMenu = menu;
+    }
+
+    public Menu getFragmentMenu() {
+        return _fragmentMenu;
+    }
 }

app/src/main/java/net/gsantner/opoc/preference/PropertyBackend.java

@@ -10,8 +10,6 @@
 #########################################################*/
 package net.gsantner.opoc.preference;
 
-import java.util.Calendar;
-import java.util.Date;
 import java.util.List;
 
 @SuppressWarnings({"UnusedReturnValue", "SpellCheckingInspection", "unused", "SameParameterValue"})

app/src/main/java/net/gsantner/opoc/preference/SharedPreferencesPropertyBackend.java

@@ -532,7 +532,7 @@ public class SharedPreferencesPropertyBackend implements PropertyBackend<String,
      * A method to determine if current hour is between begin and end.
      * This is especially useful for time-based light/dark mode
      */
-    public boolean isCurrentHourOfDayBetween(int begin, int end) {
+    public static boolean isCurrentHourOfDayBetween(int begin, int end) {
         begin = (begin >= 23 || begin < 0) ? 0 : begin;
         end = (end >= 23 || end < 0) ? 0 : end;
         int h = Calendar.getInstance().get(Calendar.HOUR_OF_DAY);
@@ -559,7 +559,7 @@ public class SharedPreferencesPropertyBackend implements PropertyBackend<String,
     public boolean afterDaysTrue(String key, int daysSinceLastTime, int firstTime, final SharedPreferences... pref) {
         Date d = new Date(System.currentTimeMillis());
         if (!contains(key)) {
-            d = getDateOfDaysAgo(daysSinceLastTime-firstTime);
+            d = getDateOfDaysAgo(daysSinceLastTime - firstTime);
             setLong(key, d.getTime());
             return firstTime < 1;
         } else {

app/src/main/java/net/gsantner/opoc/ui/SearchOrCustomTextDialog.java

@@ -12,10 +12,12 @@ package net.gsantner.opoc.ui;
 
 import android.app.Activity;
 import android.graphics.Typeface;
+import android.os.AsyncTask;
 import android.support.annotation.ColorInt;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.annotation.StringRes;
+import android.support.design.widget.Snackbar;
 import android.support.v7.app.AlertDialog;
 import android.support.v7.widget.AppCompatEditText;
 import android.text.Editable;
@@ -24,6 +26,7 @@ import android.text.TextWatcher;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.Window;
 import android.view.WindowManager;
 import android.widget.ArrayAdapter;
 import android.widget.Filter;
@@ -31,12 +34,20 @@ import android.widget.LinearLayout;
 import android.widget.ListView;
 import android.widget.TextView;
 
+import net.gsantner.opoc.util.ActivityUtils;
 import net.gsantner.opoc.util.Callback;
 import net.gsantner.opoc.util.ContextUtils;
 
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.io.filefilter.IOFileFilter;
+
+import java.io.File;
+import java.lang.ref.WeakReference;
 import java.util.ArrayList;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Locale;
+import java.util.regex.Pattern;
 
 @SuppressWarnings("WeakerAccess")
 public class SearchOrCustomTextDialog {
@@ -115,6 +126,7 @@ public class SearchOrCustomTextDialog {
             }
         };
 
+        final ActivityUtils activityUtils = new ActivityUtils(activity);
         final AppCompatEditText searchEditText = new AppCompatEditText(activity);
         searchEditText.setSingleLine(true);
         searchEditText.setMaxLines(1);
@@ -140,6 +152,7 @@ public class SearchOrCustomTextDialog {
         final ListView listView = new ListView(activity);
         final LinearLayout linearLayout = new LinearLayout(activity);
         listView.setAdapter(listAdapter);
+        listView.setVisibility(dopt.data != null && !dopt.data.isEmpty() ? View.VISIBLE : View.GONE);
         linearLayout.setOrientation(LinearLayout.VERTICAL);
         if (dopt.isSearchEnabled) {
             LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
@@ -157,7 +170,7 @@ public class SearchOrCustomTextDialog {
         dialogBuilder.setView(linearLayout)
                 .setTitle(dopt.titleText)
                 .setOnCancelListener(null)
-                .setNegativeButton(dopt.cancelButtonText, null);
+                .setNegativeButton(dopt.cancelButtonText, (dialogInterface, i) -> dialogInterface.dismiss());
         if (dopt.isSearchEnabled) {
             dialogBuilder.setPositiveButton(dopt.okButtonText, (dialogInterface, i) -> {
                 dialogInterface.dismiss();
@@ -186,9 +199,124 @@ public class SearchOrCustomTextDialog {
             return false;
         });
 
-        if (dialog.getWindow() != null) {
+
-            dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
+        Window w;
+        if ((w = dialog.getWindow()) != null && dopt.isSearchEnabled) {
+            w.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE | WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
         }
         dialog.show();
+        if ((w = dialog.getWindow()) != null) {
+            w.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);
+        }
+
+        if (dopt.isSearchEnabled) {
+            searchEditText.requestFocus();
+        }
+    }
+
+
+    public static SearchFilesTask recursiveFileSearch(Activity activity, File searchDir, String query, Callback.a1<List<String>> callback) {
+        query = query.replaceAll("(?<![.])[*]", ".*");
+        SearchFilesTask task = new SearchFilesTask(activity, searchDir, query, callback, query.startsWith("^") || query.contains("*"));
+        task.execute();
+        return task;
+    }
+
+    public static class SearchFilesTask extends AsyncTask<Void, File, List<String>> implements IOFileFilter {
+        private final Callback.a1<List<String>> _callback;
+        private final File _searchDir;
+        private final String _query;
+        private final boolean _isRegex;
+        private final WeakReference<Activity> _activityRef;
+
+        private final Pattern _regex;
+        private Snackbar _snackBar;
+
+        public SearchFilesTask(Activity activity, File searchDir, String query, Callback.a1<List<String>> callback, boolean isRegex) {
+            _searchDir = searchDir;
+            _query = isRegex ? query : query.toLowerCase();
+            _callback = callback;
+            _isRegex = isRegex;
+            _regex = isRegex ? Pattern.compile(_query) : null;
+            _activityRef = new WeakReference<>(activity);
+        }
+
+        // Called for both, file and folder filter
+        @Override
+        public boolean accept(File file) {
+            return isMatching(file, true);
+        }
+
+        // Not called
+        @Override
+        public boolean accept(File dir, String name) {
+            return isMatching(new File(dir, name), true);
+        }
+
+        // In iterateFilesAndDirs, subdirs are only scanned when returning true on it
+        // But those dirs will also occur in iterator
+        // Hence call this aagain with alwaysMatchDir=false
+        public boolean isMatching(File file, boolean alwaysMatchDir) {
+            if (file.isDirectory()) {
+                // Do never scan .git directories, lots of files, lots of time
+                if (file.getName().equals(".git")) {
+                    return false;
+                }
+                if (alwaysMatchDir) {
+                    return true;
+                }
+            }
+            String name = file.getName();
+            file = file.getParentFile();
+            return _isRegex ? _regex.matcher(name).matches() : name.toLowerCase().contains(_query);
+        }
+
+        @Override
+        protected void onPreExecute() {
+            super.onPreExecute();
+            if (_activityRef.get() != null) {
+                _snackBar = Snackbar.make(_activityRef.get().findViewById(android.R.id.content), _query + "...", Snackbar.LENGTH_INDEFINITE);
+                _snackBar.setAction(android.R.string.cancel, (v) -> {
+                    _snackBar.dismiss();
+                    cancel(true);
+                }).show();
+            }
+        }
+
+        @Override
+        protected List<String> doInBackground(Void... voidp) {
+            List<String> ret = new ArrayList<>();
+
+            boolean first = true;
+            Iterator<File> iter = FileUtils.iterateFilesAndDirs(_searchDir, this, this);
+            while (iter.hasNext() && !isCancelled()) {
+                File f = iter.next();
+                if (first) {
+                    first = false;
+                    if (f.equals(_searchDir)) {
+                        continue;
+                    }
+                }
+                if (f.isFile() || (f.isDirectory() && isMatching(f, false))) {
+                    ret.add(f.getAbsolutePath().replace(_searchDir.getAbsolutePath() + "/", ""));
+                }
+            }
+            return ret;
+        }
+
+        @Override
+        protected void onPostExecute(List<String> ret) {
+            super.onPostExecute(ret);
+            if (_snackBar != null) {
+                _snackBar.dismiss();
+            }
+            if (_callback != null) {
+                try {
+                    _callback.callback(ret);
+                } catch (Exception ignored) {
+                }
+            }
+            new ActivityUtils(_activityRef.get()).hideSoftKeyboard().freeContextRef();
+        }
     }
 }

app/src/main/java/net/gsantner/opoc/util/ActivityUtils.java

@@ -17,8 +17,11 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.content.res.TypedArray;
 import android.net.Uri;
 import android.os.Build;
+import android.provider.CalendarContract;
+import android.support.annotation.ColorInt;
 import android.support.annotation.StringRes;
 import android.support.design.widget.Snackbar;
 import android.support.v4.content.ContextCompat;
@@ -47,6 +50,12 @@ public class ActivityUtils extends net.gsantner.opoc.util.ContextUtils {
         _activity = activity;
     }
 
+    @Override
+    public void freeContextRef() {
+        super.freeContextRef();
+        _activity = null;
+    }
+
     //########################
     //##     Methods
     //########################
@@ -85,9 +94,11 @@ public class ActivityUtils extends net.gsantner.opoc.util.ContextUtils {
     }
 
 
-    public void showSnackBar(@StringRes int stringResId, boolean showLong) {
+    public Snackbar showSnackBar(@StringRes int stringResId, boolean showLong) {
-        Snackbar.make(_activity.findViewById(android.R.id.content), stringResId,
+        Snackbar s = Snackbar.make(_activity.findViewById(android.R.id.content), stringResId,
-                showLong ? Snackbar.LENGTH_LONG : Snackbar.LENGTH_SHORT).show();
+                showLong ? Snackbar.LENGTH_LONG : Snackbar.LENGTH_SHORT);
+        s.show();
+        return s;
     }
 
     public void showSnackBar(@StringRes int stringResId, boolean showLong, @StringRes int actionResId, View.OnClickListener listener) {
@@ -97,18 +108,58 @@ public class ActivityUtils extends net.gsantner.opoc.util.ContextUtils {
                 .show();
     }
 
-    public void hideSoftKeyboard() {
+    public ActivityUtils setSoftKeyboardVisibile(boolean visible, View... editView) {
-        InputMethodManager imm = (InputMethodManager) _activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
+        final Activity activity = _activity;
-        if (imm != null && _activity.getCurrentFocus() != null && _activity.getCurrentFocus().getWindowToken() != null) {
+        if (activity != null) {
-            imm.hideSoftInputFromWindow(_activity.getCurrentFocus().getWindowToken(), 0);
+            final View v = (editView != null && editView.length > 0) ? (editView[0]) : (activity.getCurrentFocus() != null && activity.getCurrentFocus().getWindowToken() != null ? activity.getCurrentFocus() : null);
+            final InputMethodManager imm = (InputMethodManager) activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
+            if (v != null && imm != null) {
+                Runnable r = () -> {
+                    if (visible) {
+                        v.requestFocus();
+                        imm.showSoftInput(v, InputMethodManager.SHOW_FORCED);
+                    } else {
+                        imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
+                    }
+                };
+                r.run();
+                for (int d : new int[]{100, 350}) {
+                    v.postDelayed(r, d);
+                }
+            }
         }
+        return this;
     }
 
-    public void showSoftKeyboard() {
+    public ActivityUtils hideSoftKeyboard() {
-        InputMethodManager imm = (InputMethodManager) _activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
+        if (_activity != null) {
-        if (imm != null && _activity.getCurrentFocus() != null && _activity.getCurrentFocus().getWindowToken() != null) {
+            InputMethodManager imm = (InputMethodManager) _activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
-            imm.showSoftInput(_activity.getCurrentFocus(), InputMethodManager.SHOW_FORCED);
+            if (imm != null && _activity.getCurrentFocus() != null && _activity.getCurrentFocus().getWindowToken() != null) {
+                imm.hideSoftInputFromWindow(_activity.getCurrentFocus().getWindowToken(), 0);
+            }
         }
+        return this;
+    }
+
+    public ActivityUtils showSoftKeyboard() {
+        if (_activity != null) {
+            InputMethodManager imm = (InputMethodManager) _activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
+            if (imm != null && _activity.getCurrentFocus() != null && _activity.getCurrentFocus().getWindowToken() != null) {
+                showSoftKeyboard(_activity.getCurrentFocus());
+            }
+        }
+        return this;
+    }
+
+
+    public ActivityUtils showSoftKeyboard(View textInputView) {
+        if (_activity != null) {
+            InputMethodManager imm = (InputMethodManager) _activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
+            if (imm != null && textInputView != null) {
+                imm.showSoftInput(textInputView, InputMethodManager.SHOW_FORCED);
+            }
+        }
+        return this;
     }
 
     public void showDialogWithHtmlTextView(@StringRes int resTitleId, String html) {
@@ -142,7 +193,7 @@ public class ActivityUtils extends net.gsantner.opoc.util.ContextUtils {
     }
 
     // Toggle with no param, else set visibility according to first bool
-    public void toggleStatusbarVisibility(boolean... optionalForceVisible) {
+    public ActivityUtils toggleStatusbarVisibility(boolean... optionalForceVisible) {
         WindowManager.LayoutParams attrs = _activity.getWindow().getAttributes();
         int flag = WindowManager.LayoutParams.FLAG_FULLSCREEN;
         if (optionalForceVisible.length == 0) {
@@ -153,9 +204,10 @@ public class ActivityUtils extends net.gsantner.opoc.util.ContextUtils {
             attrs.flags |= flag;
         }
         _activity.getWindow().setAttributes(attrs);
+        return this;
     }
 
-    public void showGooglePlayEntryForThisApp() {
+    public ActivityUtils showGooglePlayEntryForThisApp() {
         String pkgId = "details?id=" + _activity.getPackageName();
         Intent goToMarket = new Intent(Intent.ACTION_VIEW, Uri.parse("market://" + pkgId));
         goToMarket.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY |
@@ -167,9 +219,10 @@ public class ActivityUtils extends net.gsantner.opoc.util.ContextUtils {
             _activity.startActivity(new Intent(Intent.ACTION_VIEW,
                     Uri.parse("https://play.google.com/store/apps/" + pkgId)));
         }
+        return this;
     }
 
-    public void setStatusbarColor(int color, boolean... fromRes) {
+    public ActivityUtils setStatusbarColor(int color, boolean... fromRes) {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
             if (fromRes != null && fromRes.length > 0 && fromRes[0]) {
                 color = ContextCompat.getColor(_context, color);
@@ -177,13 +230,55 @@ public class ActivityUtils extends net.gsantner.opoc.util.ContextUtils {
 
             _activity.getWindow().setStatusBarColor(color);
         }
+        return this;
     }
 
-    public void setLauncherActivityEnabled(Class activityClass, boolean enable) {
+    public ActivityUtils setLauncherActivityEnabled(Class activityClass, boolean enable) {
         Context context = _context.getApplicationContext();
         PackageManager pkg = context.getPackageManager();
         ComponentName component = new ComponentName(context, activityClass);
-        pkg.setComponentEnabledSetting(component, enable ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED : PackageManager.COMPONENT_ENABLED_STATE_DISABLED
+        pkg.setComponentEnabledSetting(component, enable ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED : PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);
-                , PackageManager.DONT_KILL_APP);
+        return this;
+    }
+
+
+    @ColorInt
+    public Integer getCurrentPrimaryColor() {
+        TypedValue typedValue = new TypedValue();
+        _context.getTheme().resolveAttribute(getResId(ResType.ATTR, "colorPrimary"), typedValue, true);
+        return typedValue.data;
+    }
+
+    @ColorInt
+    public Integer getCurrentPrimaryDarkColor() {
+        TypedValue typedValue = new TypedValue();
+        _context.getTheme().resolveAttribute(getResId(ResType.ATTR, "colorPrimaryDark"), typedValue, true);
+        return typedValue.data;
+    }
+
+    @ColorInt
+    public Integer getCurrentAccentColor() {
+        TypedValue typedValue = new TypedValue();
+        _context.getTheme().resolveAttribute(getResId(ResType.ATTR, "colorAccent"), typedValue, true);
+        return typedValue.data;
+    }
+
+    @ColorInt
+    public Integer getActivityBackgroundColor() {
+        TypedArray array = _activity.getTheme().obtainStyledAttributes(new int[]{
+                android.R.attr.colorBackground,
+        });
+        int c = array.getColor(0, 0xFF0000);
+        array.recycle();
+        return c;
+    }
+
+    public ActivityUtils startCalendarApp() {
+        Uri.Builder builder = CalendarContract.CONTENT_URI.buildUpon();
+        builder.appendPath("time");
+        builder.appendPath(Long.toString(System.currentTimeMillis()));
+        Intent intent = new Intent(Intent.ACTION_VIEW, builder.build());
+        _activity.startActivity(intent);
+        return this;
     }
 }

app/src/main/java/net/gsantner/opoc/util/Callback.java

@@ -31,4 +31,24 @@ public class Callback {
     public interface a5<A, B, C, D, E> {
         void callback(A arg1, B arg2, C arg3, D arg4, E arg5);
     }
+
+    public interface b1<A> {
+        boolean callback(A arg1);
+    }
+
+    public interface b2<A, B> {
+        boolean callback(A arg1, B arg2);
+    }
+
+    public interface b3<A, B, C> {
+        boolean callback(A arg1, B arg2, C arg3);
+    }
+
+    public interface b4<A, B, C, D> {
+        boolean callback(A arg1, B arg2, C arg3, D arg4);
+    }
+
+    public interface b5<A, B, C, D, E> {
+        boolean callback(A arg1, B arg2, C arg3, D arg4, E arg5);
+    }
 }

app/src/main/java/net/gsantner/opoc/util/ContextUtils.java

@@ -38,6 +38,7 @@ import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
 import android.net.Uri;
 import android.os.Build;
+import android.os.Environment;
 import android.os.SystemClock;
 import android.support.annotation.ColorInt;
 import android.support.annotation.ColorRes;
@@ -48,6 +49,7 @@ import android.support.annotation.StringRes;
 import android.support.graphics.drawable.VectorDrawableCompat;
 import android.support.v4.content.ContextCompat;
 import android.support.v4.graphics.drawable.DrawableCompat;
+import android.support.v4.util.Pair;
 import android.text.Html;
 import android.text.InputFilter;
 import android.text.SpannableString;
@@ -74,6 +76,8 @@ import java.io.IOException;
 import java.io.InputStreamReader;
 import java.lang.reflect.Method;
 import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Locale;
 
 import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
@@ -94,6 +98,9 @@ public class ContextUtils {
         return _context;
     }
 
+    public void freeContextRef() {
+        _context = null;
+    }
 
     //
     // Class Methods
@@ -171,15 +178,23 @@ public class ContextUtils {
         return String.format(a ? "#%08X" : "#%06X", (a ? 0xFFFFFFFF : 0xFFFFFF) & intColor);
     }
 
+    public String getAndroidVersion() {
+        return Build.VERSION.RELEASE + " (" + Build.VERSION.SDK_INT + ")";
+    }
+
     public String getAppVersionName() {
+        PackageManager manager = _context.getPackageManager();
         try {
-            PackageManager manager = _context.getPackageManager();
             PackageInfo info = manager.getPackageInfo(getPackageIdManifest(), 0);
             return info.versionName;
         } catch (PackageManager.NameNotFoundException e) {
-            e.printStackTrace();
+            try {
-            return "?";
+                PackageInfo info = manager.getPackageInfo(getPackageIdReal(), 0);
+                return info.versionName;
+            } catch (PackageManager.NameNotFoundException ignored) {
+            }
         }
+        return "?";
     }
 
     public String getAppInstallationSource() {
@@ -519,12 +534,76 @@ public class ContextUtils {
     /**
      * Get the private directory for the current package (usually /data/data/package.name/)
      */
-    public String getAppDataDir() {
+    @SuppressWarnings("StatementWithEmptyBody")
+    public File getAppDataPrivateDir() {
+        File filesDir;
         try {
-            return _context.getPackageManager().getPackageInfo(getPackageIdReal(), 0).applicationInfo.dataDir;
+            filesDir = new File(new File(_context.getPackageManager().getPackageInfo(getPackageIdReal(), 0).applicationInfo.dataDir), "files");
         } catch (PackageManager.NameNotFoundException e) {
-            return _context.getFilesDir().getParent();
+            filesDir = _context.getFilesDir();
         }
+        if (!filesDir.exists() && filesDir.mkdirs()) ;
+        return filesDir;
+    }
+
+    /**
+     * Get public (accessible) appdata folders
+     */
+    @SuppressWarnings("StatementWithEmptyBody")
+    public List<Pair<File, String>> getAppDataPublicDirs(boolean internalStorageFolder, boolean sdcardFolders, boolean storageNameWithoutType) {
+        List<Pair<File, String>> dirs = new ArrayList<>();
+        for (File externalFileDir : ContextCompat.getExternalFilesDirs(_context, null)) {
+            if (externalFileDir == null || Environment.getExternalStorageDirectory() == null) {
+                continue;
+            }
+            boolean isInt = externalFileDir.getAbsolutePath().startsWith(Environment.getExternalStorageDirectory().getAbsolutePath());
+            boolean add = (internalStorageFolder && isInt) || (sdcardFolders && !isInt);
+            if (add) {
+                dirs.add(new Pair<>(externalFileDir, getStorageName(externalFileDir, storageNameWithoutType)));
+                if (!externalFileDir.exists() && externalFileDir.mkdirs()) ;
+            }
+        }
+        return dirs;
+    }
+
+    public String getStorageName(File externalFileDir, boolean storageNameWithoutType) {
+        boolean isInt = externalFileDir.getAbsolutePath().startsWith(Environment.getExternalStorageDirectory().getAbsolutePath());
+
+        String[] split = externalFileDir.getAbsolutePath().split("/");
+        if (split.length > 2) {
+            return isInt ? (storageNameWithoutType ? "Internal Storage" : "") : (storageNameWithoutType ? split[2] : ("SD Card (" + split[2] + ")"));
+        } else {
+            return "Storage";
+        }
+    }
+
+    public List<Pair<File, String>> getStorages(boolean internalStorageFolder, boolean sdcardFolders) {
+        List<Pair<File, String>> storages = new ArrayList<>();
+        for (Pair<File, String> pair : getAppDataPublicDirs(internalStorageFolder, sdcardFolders, true)) {
+            if (pair.first != null && pair.first.getAbsolutePath().lastIndexOf("/Android/data") > 0) {
+                try {
+                    storages.add(new Pair<>(new File(pair.first.getCanonicalPath().replaceFirst("/Android/data.*", "")), pair.second));
+                } catch (IOException ignored) {
+                }
+            }
+        }
+        return storages;
+    }
+
+    public File getStorageRootFolder(File file) {
+        String filepath;
+        try {
+            filepath = file.getCanonicalPath();
+        } catch (Exception ignored) {
+            return null;
+        }
+        for (Pair<File, String> storage : getStorages(false, true)) {
+            //noinspection ConstantConditions
+            if (filepath.startsWith(storage.first.getAbsolutePath())) {
+                return storage.first;
+            }
+        }
+        return null;
     }
 
     /**
@@ -854,6 +933,18 @@ public class ContextUtils {
         }
         return mimeType;
     }
+
+    public Integer parseColor(String colorstr) {
+        if (colorstr == null || colorstr.trim().isEmpty()) {
+            return null;
+        }
+        try {
+            return Color.parseColor(colorstr);
+        } catch (IllegalArgumentException ignored) {
+            return null;
+        }
+    }
+
 }
 
 

app/src/main/java/net/gsantner/opoc/util/FileUtils.java

@@ -405,7 +405,7 @@ public class FileUtils {
      * Analyze given textfile and retrieve multiple information from it
      * Information is written back to the {@link AtomicInteger} parameters
      */
-    public static void retrieveTextFileSummary(File file, AtomicInteger numCharacters, AtomicInteger numLines) {
+    public static void retrieveTextFileSummary(File file, AtomicInteger numCharacters, AtomicInteger numLines, AtomicInteger numWords) {
         BufferedReader br = null;
         try {
             br = new BufferedReader(new FileReader(file));
@@ -413,11 +413,15 @@ public class FileUtils {
             while ((line = br.readLine()) != null) {
                 numLines.getAndIncrement();
                 numCharacters.getAndSet(numCharacters.get() + line.length());
+                if (!line.equals("")) {
+                    numWords.getAndSet(numWords.get() + line.split("\\s+").length);
+                }
             }
         } catch (Exception e) {
             e.printStackTrace();
             numCharacters.set(-1);
             numLines.set(-1);
+            numWords.set(-1);
         } finally {
             if (br != null) {
                 try {

app/src/main/java/net/gsantner/opoc/util/ShareUtil.java

@@ -10,6 +10,8 @@
 #########################################################*/
 package net.gsantner.opoc.util;
 
+import android.Manifest;
+import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.ActivityNotFoundException;
 import android.content.BroadcastReceiver;
@@ -37,19 +39,29 @@ import android.provider.MediaStore;
 import android.support.annotation.DrawableRes;
 import android.support.annotation.Nullable;
 import android.support.annotation.RequiresApi;
+import android.support.annotation.StringRes;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
 import android.support.v4.content.FileProvider;
 import android.support.v4.content.LocalBroadcastManager;
 import android.support.v4.content.pm.ShortcutInfoCompat;
 import android.support.v4.content.pm.ShortcutManagerCompat;
 import android.support.v4.graphics.drawable.IconCompat;
+import android.support.v4.provider.DocumentFile;
+import android.support.v4.util.Pair;
+import android.support.v7.app.AlertDialog;
+import android.support.v7.preference.PreferenceManager;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.View;
 import android.webkit.WebView;
+import android.widget.ImageView;
+import android.widget.Toast;
 
 import java.io.File;
 import java.io.FileDescriptor;
 import java.io.FileInputStream;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
@@ -65,15 +77,17 @@ import static android.app.Activity.RESULT_OK;
  * Also allows to parse/fetch information out of shared information.
  * (M)Permissions are not checked, wrap ShareUtils methods if neccessary
  */
-@SuppressWarnings({"UnusedReturnValue", "WeakerAccess", "SameParameterValue", "unused", "deprecation", "ConstantConditions", "ObsoleteSdkInt", "SpellCheckingInspection"})
+@SuppressWarnings({"UnusedReturnValue", "WeakerAccess", "SameParameterValue", "unused", "deprecation", "ConstantConditions", "ObsoleteSdkInt", "SpellCheckingInspection", "JavadocReference"})
 public class ShareUtil {
     public final static String EXTRA_FILEPATH = "real_file_path_2";
     public final static SimpleDateFormat SDF_RFC3339_ISH = new SimpleDateFormat("yyyy-MM-dd'T'HH-mm", Locale.getDefault());
     public final static SimpleDateFormat SDF_SHORT = new SimpleDateFormat("yyMMdd-HHmm", Locale.getDefault());
     public final static String MIME_TEXT_PLAIN = "text/plain";
+    public final static String PREF_KEY__SAF_TREE_URI = "pref_key__saf_tree_uri";
 
     public final static int REQUEST_CAMERA_PICTURE = 50001;
     public final static int REQUEST_PICK_PICTURE = 50002;
+    public final static int REQUEST_SAF = 50003;
 
     protected static String _lastCameraPictureFilepath;
 
@@ -86,6 +100,10 @@ public class ShareUtil {
         _chooserTitle = "➥";
     }
 
+    public void freeContextRef() {
+        _context = null;
+    }
+
     public String getFileProviderAuthority() {
         if (TextUtils.isEmpty(_fileProviderAuthority)) {
             throw new RuntimeException("Error at ShareUtil.getFileProviderAuthority(): No FileProvider authority provided");
@@ -513,6 +531,15 @@ public class ShareUtil {
                             fileStr = fileStr.substring(prefix.length());
                         }
                     }
+
+                    // external/ prefix for External storage
+                    if (fileStr.startsWith((tmps = "external/"))) {
+                        File f = new File(Uri.decode(Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + fileStr.substring(tmps.length())));
+                        if (f.exists()) {
+                            return f;
+                        }
+                    }
+
                     // Next/OwnCloud Fileprovider
                     for (String fp : new String[]{"org.nextcloud.files", "org.nextcloud.beta.files", "org.owncloud.files"}) {
                         if (fileProvider.equals(fp) && fileStr.startsWith(tmps = "external_files/")) {
@@ -527,6 +554,7 @@ public class ShareUtil {
                     if (fileProvider.equals("com.mi.android.globalFileexplorer.myprovider") && fileStr.startsWith(tmps = "external_files")) {
                         return new File(Uri.decode(Environment.getExternalStorageDirectory().getAbsolutePath() + fileStr.substring(tmps.length())));
                     }
+
                     // URI Encoded paths with full path after content://package/
                     if (fileStr.startsWith("/") || fileStr.startsWith("%2F")) {
                         tmpf = new File(Uri.decode(fileStr));
@@ -557,7 +585,11 @@ public class ShareUtil {
             throw new RuntimeException("Error: ShareUtil.requestGalleryPicture needs an Activity Context.");
         }
         Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
-        ((Activity) _context).startActivityForResult(intent, REQUEST_PICK_PICTURE);
+        try {
+            ((Activity) _context).startActivityForResult(intent, REQUEST_PICK_PICTURE);
+        } catch (Exception ex) {
+            Toast.makeText(_context, "No gallery app installed!", Toast.LENGTH_SHORT).show();
+        }
     }
 
     /**
@@ -565,7 +597,7 @@ public class ShareUtil {
      * Result ({@link String}) will be available from {@link Activity#onActivityResult(int, int, Intent)}.
      * It has set resultCode to {@link Activity#RESULT_OK} with same requestCode, if successfully
      * The requested image savepath has to be stored at caller side (not contained in intent),
-     * it can be retrieved using {@link #extractResultFromActivityResult(int, int, Intent)},
+     * it can be retrieved using {@link #extractResultFromActivityResult(int, int, Intent, Activity...)}
      * returns null if an error happened.
      *
      * @param target Path to file to write to, if folder the filename gets app_name + millis + random filename. If null DCIM folder is used.
@@ -621,7 +653,9 @@ public class ShareUtil {
      * Forward all arguments from activity. Only requestCodes from {@link ShareUtil} get analyzed.
      * Also may forward results via local broadcast
      */
-    public Object extractResultFromActivityResult(int requestCode, int resultCode, Intent data) {
+    @SuppressLint("ApplySharedPref")
+    public Object extractResultFromActivityResult(int requestCode, int resultCode, Intent data, Activity... activityOrNull) {
+        Activity activity = greedyGetActivity(activityOrNull);
         switch (requestCode) {
             case REQUEST_CAMERA_PICTURE: {
                 String picturePath = (resultCode == RESULT_OK) ? _lastCameraPictureFilepath : null;
@@ -676,6 +710,18 @@ public class ShareUtil {
                 }
                 break;
             }
+
+            case REQUEST_SAF: {
+                if (resultCode == RESULT_OK && data != null && data.getData() != null) {
+                    Uri treeUri = data.getData();
+                    PreferenceManager.getDefaultSharedPreferences(_context).edit().putString(PREF_KEY__SAF_TREE_URI, treeUri.toString()).commit();
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+                        activity.getContentResolver().takePersistableUriPermission(treeUri, Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
+                    }
+                    return treeUri;
+                }
+                break;
+            }
         }
         return null;
     }
@@ -822,4 +868,264 @@ public class ShareUtil {
             customTabIntent.setPackage(pkg);
         }
     }
+
+    /***
+     * Request storage access. The user needs to press "Select storage" at the correct storage.
+     * @param activity The activity which will receive the result from startActivityForResult
+     */
+    public void requestStorageAccessFramework(Activity... activity) {
+        Activity a = greedyGetActivity(activity);
+        if (a != null && android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
+            Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
+            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION
+                    | Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+                    | Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION
+                    | Intent.FLAG_GRANT_PREFIX_URI_PERMISSION
+            );
+            a.startActivityForResult(intent, REQUEST_SAF);
+        }
+    }
+
+    /**
+     * Get storage access framework tree uri. The user must have granted access via {@link #requestStorageAccessFramework(Activity...)}
+     *
+     * @return Uri or null if not granted yet
+     */
+    public Uri getStorageAccessFrameworkTreeUri() {
+        String treeStr = PreferenceManager.getDefaultSharedPreferences(_context).getString(PREF_KEY__SAF_TREE_URI, null);
+        if (!TextUtils.isEmpty(treeStr)) {
+            try {
+                return Uri.parse(treeStr);
+            } catch (Exception ignored) {
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Get mounted storage folder root (by tree uri). The user must have granted access via {@link #requestStorageAccessFramework(Activity...)}
+     *
+     * @return File or null if SD not mounted
+     */
+    public File getStorageAccessFolder() {
+        Uri safUri = getStorageAccessFrameworkTreeUri();
+        if (safUri != null) {
+            String safUriStr = safUri.toString();
+            ContextUtils cu = new ContextUtils(_context);
+            for (Pair<File, String> storage : cu.getStorages(false, true)) {
+                @SuppressWarnings("ConstantConditions") String storageFolderName = storage.first.getName();
+                if (safUriStr.contains(storageFolderName)) {
+                    return storage.first;
+                }
+            }
+            cu.freeContextRef();
+        }
+        return null;
+    }
+
+    /**
+     * Check whether or not a file is under a storage access folder (external storage / SD)
+     *
+     * @param file The file object (file/folder)
+     * @return Wether or not the file is under storage access folder
+     */
+    public boolean isUnderStorageAccessFolder(File file) {
+        if (file != null) {
+            ContextUtils cu = new ContextUtils(_context);
+            for (Pair<File, String> storage : cu.getStorages(false, true)) {
+                if (file.getAbsolutePath().startsWith(storage.first.getAbsolutePath())) {
+                    cu.freeContextRef();
+                    return true;
+                }
+            }
+            cu.freeContextRef();
+        }
+        return false;
+    }
+
+    /**
+     * Greedy extract Activity from parameter or convert context if it's a activity
+     */
+    private Activity greedyGetActivity(Activity... activity) {
+        if (activity != null && activity.length != 0 && activity[0] != null) {
+            return activity[0];
+        }
+        if (_context instanceof Activity) {
+            return (Activity) _context;
+        }
+        return null;
+    }
+
+    /**
+     * Check whether or not a file can be written.
+     * Requires storage access framework permission for external storage (SD)
+     *
+     * @param file  The file object (file/folder)
+     * @param isDir Wether or not the given file parameter is a directory
+     * @return Wether or not the file can be written
+     */
+    public boolean canWriteFile(File file, boolean isDir) {
+        if (file == null) {
+            return false;
+        } else if (file.getAbsolutePath().startsWith(Environment.getExternalStorageDirectory().getAbsolutePath())) {
+            boolean s1 = isDir && file.getParentFile().canWrite();
+            return !isDir && file.getParentFile() != null ? file.getParentFile().canWrite() : file.canWrite();
+        } else {
+            DocumentFile dof = getDocumentFile(file, isDir);
+            return dof != null && dof.canWrite();
+        }
+    }
+
+    /**
+     * Get a {@link DocumentFile} object out of a normal java {@link File}.
+     * When used on a external storage (SD), use {@link #requestStorageAccessFramework(Activity...)}
+     * first to get access. Otherwise this will fail.
+     *
+     * @param file  The file/folder to convert
+     * @param isDir Wether or not file is a directory. For non-existing (to be created) files this info is not known hence required.
+     * @return A {@link DocumentFile} object or null if file cannot be converted
+     */
+    public DocumentFile getDocumentFile(File file, boolean isDir) {
+        // On older versions use fromFile
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
+            return DocumentFile.fromFile(file);
+        }
+
+        // Get ContextUtils to find storageRootFolder
+        ContextUtils cu = new ContextUtils(_context);
+        File baseFolderFile = cu.getStorageRootFolder(file);
+        cu.freeContextRef();
+
+        String baseFolder = baseFolderFile == null ? null : baseFolderFile.getAbsolutePath();
+        boolean originalDirectory = false;
+        if (baseFolder == null) {
+            return null;
+        }
+
+        String relPath = null;
+        try {
+            String fullPath = file.getCanonicalPath();
+            if (!baseFolder.equals(fullPath)) {
+                relPath = fullPath.substring(baseFolder.length() + 1);
+            } else {
+                originalDirectory = true;
+            }
+        } catch (IOException e) {
+            return null;
+        } catch (Exception ignored) {
+            originalDirectory = true;
+        }
+        Uri treeUri;
+        if ((treeUri = getStorageAccessFrameworkTreeUri()) == null) {
+            return null;
+        }
+        DocumentFile dof = DocumentFile.fromTreeUri(_context, treeUri);
+        if (originalDirectory) {
+            return dof;
+        }
+        String[] parts = relPath.split("\\/");
+        for (int i = 0; i < parts.length; i++) {
+            DocumentFile nextDof = dof.findFile(parts[i]);
+            if (nextDof == null) {
+                nextDof = ((i < parts.length - 1) || isDir) ? dof.createDirectory(parts[i]) : dof.createFile("image", parts[i]);
+            }
+            dof = nextDof;
+        }
+        return dof;
+    }
+
+    public void showMountSdDialog(@StringRes int title, @StringRes int description, @DrawableRes int mountDescriptionGraphic, Activity... activityOrNull) {
+        Activity activity = greedyGetActivity(activityOrNull);
+        if (activity == null) {
+            return;
+        }
+
+        // Image viewer
+        ImageView imv = new ImageView(activity);
+        imv.setImageResource(mountDescriptionGraphic);
+        imv.setAdjustViewBounds(true);
+
+        AlertDialog.Builder dialog = new AlertDialog.Builder(activity);
+        dialog.setView(imv);
+        dialog.setTitle(title);
+        dialog.setMessage(_context.getString(description) + "\n\n");
+        dialog.setNegativeButton(android.R.string.cancel, null);
+        dialog.setPositiveButton(android.R.string.yes, (dialogInterface, i) -> requestStorageAccessFramework(activity));
+        AlertDialog dialogi = dialog.create();
+        dialogi.show();
+    }
+
+    public void writeFile(File file, boolean isDirectory, Callback.a2<Boolean, FileOutputStream> writeFileCallback) {
+        try {
+            FileOutputStream fileOutputStream = null;
+            ParcelFileDescriptor pfd = null;
+            if (file.canWrite()) {
+                if (isDirectory) {
+                    file.mkdirs();
+                } else {
+                    fileOutputStream = new FileOutputStream(file);
+                }
+            } else {
+                DocumentFile dof = getDocumentFile(file, isDirectory);
+                if (dof != null && dof.getUri() != null && dof.canWrite()) {
+                    if (isDirectory) {
+                        // Nothing to do
+                    } else {
+                        pfd = _context.getContentResolver().openFileDescriptor(dof.getUri(), "w");
+                        fileOutputStream = new FileOutputStream(pfd.getFileDescriptor());
+                    }
+                }
+            }
+            if (writeFileCallback != null) {
+                writeFileCallback.callback(fileOutputStream != null || (isDirectory && file.exists()), fileOutputStream);
+            }
+            if (fileOutputStream != null) {
+                fileOutputStream.close();
+            }
+            if (pfd != null) {
+                pfd.close();
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Call telephone number.
+     * Non direct call, opens up the dialer and pre-sets the telephone number. User needs to press manually.
+     * Direct call requires M permission granted, also add permissions to manifest:
+     * <uses-permission android:name="android.permission.CALL_PHONE" />
+     *
+     * @param telNo      The telephone number to call
+     * @param directCall Direct call number if possible
+     */
+    @SuppressWarnings("SimplifiableConditionalExpression")
+    public void callTelephoneNumber(String telNo, boolean... directCall) {
+        Activity activity = greedyGetActivity();
+        if (activity == null) {
+            throw new RuntimeException("Error: ShareUtil::callTelephoneNumber needs to be contstructed with activity context");
+        }
+        boolean ldirectCall = (directCall != null && directCall.length > 0) ? directCall[0] : true;
+
+
+        if (android.os.Build.VERSION.SDK_INT >= 23 && ldirectCall && activity != null) {
+            if (ContextCompat.checkSelfPermission(activity, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
+                ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.CALL_PHONE}, 4001);
+                ldirectCall = false;
+            } else {
+                try {
+                    Intent callIntent = new Intent(Intent.ACTION_CALL);
+                    callIntent.setData(Uri.parse("tel:" + telNo));
+                    activity.startActivity(callIntent);
+                } catch (Exception ignored) {
+                    ldirectCall = false;
+                }
+            }
+        }
+        // Show dialer up with telephone number pre-inserted
+        if (!ldirectCall) {
+            Intent intent = new Intent(Intent.ACTION_DIAL, Uri.fromParts("tel", telNo, null));
+            activity.startActivity(intent);
+        }
+    }
 }

build.gradle

@@ -13,8 +13,8 @@ import java.text.SimpleDateFormat
 
 buildscript {
     ext {
-        version_gradle_tools = "3.2.1"
+        version_gradle_tools = "3.4.2"
-        version_plugin_kotlin = "1.3.11"
+        version_plugin_kotlin = "1.3.41"
         enable_plugin_kotlin = false
 
         version_compileSdk = 28
@@ -79,7 +79,7 @@ static String findUsedAndroidLocales() {
     Set<String> langs = new HashSet<>()
     new File('.').eachFileRecurse(groovy.io.FileType.DIRECTORIES) {
         final foldername = it.name
-        if (foldername.startsWith('values-') && !it.canonicalPath.contains("build" + File.separator + "intermediates")) {
+        if (foldername.startsWith('values-') && !it.canonicalPath.contains("build" + File.separator + "intermediates") && !it.canonicalPath.contains("gradle" + File.separator + "daemon")) {
             new File(it.toString()).eachFileRecurse(groovy.io.FileType.FILES) {
                 if (it.name.toLowerCase().endsWith(".xml") && it.getCanonicalFile().getText('UTF-8').contains("<string")) {
                     langs.add(foldername.replace("values-", ""))

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
+#Fri Jul 26 02:59:10 CEST 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.5.1-all.zip