tdf#103083 option to show/hide hidden files/folders on Android

The patch was sent for the ULAKBIM/PARDUS project.
Signed-off-by: Mert Tümer <merttumer7@gmail.com>

Change-Id: Iadbb688a1a976279b23d246001818ac1c21b3d47
Reviewed-on: https://gerrit.libreoffice.org/47637
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

3 files changed, 23 insertions, 1 deletions

diff --git a/android/source/res/values/strings.xml b/android/source/res/values/strings.xml
index 1fb23a528c06..9b6ff7abff9c 100644
--- a/android/source/res/values/strings.xml
+++ b/android/source/res/values/strings.xml
@@ -49,6 +49,8 @@
     <string name="pref_category_general">General</string>
     <string name="pref_experimental_editing">Experimental Mode</string>
     <string name="pref_experimental_editing_summary">Enable the experimental editing mode. Use at your own risk.</string>
+    <string name="pref_show_hidden_files">Hidden Files/Folders</string>
+    <string name="pref_show_hidden_files_summary">Enable to show hidden files/folders</string>
 
     <string name="action_about">About</string>
     <string name="action_parts">Parts</string>
diff --git a/android/source/res/xml/libreoffice_preferences.xml b/android/source/res/xml/libreoffice_preferences.xml
index 347709b7d017..17236434daa2 100644
--- a/android/source/res/xml/libreoffice_preferences.xml
+++ b/android/source/res/xml/libreoffice_preferences.xml
@@ -20,6 +20,11 @@
             android:title="File explorer layout"
             android:key="EXPLORER_VIEW_TYPE"
             android:summary="View files as a grid or in a list." />
+        <CheckBoxPreference
+            android:title="@string/pref_show_hidden_files"
+            android:key="ENABLE_SHOW_HIDDEN_FILES"
+            android:summary="@string/pref_show_hidden_files_summary"
+            android:defaultValue="false" />
     </PreferenceCategory>
     <PreferenceCategory
         android:title="@string/pref_category_general"
diff --git a/android/source/src/java/org/libreoffice/ui/LibreOfficeUIActivity.java b/android/source/src/java/org/libreoffice/ui/LibreOfficeUIActivity.java
index 530644667aa9..8d4891f2053a 100644
--- a/android/source/src/java/org/libreoffice/ui/LibreOfficeUIActivity.java
+++ b/android/source/src/java/org/libreoffice/ui/LibreOfficeUIActivity.java
@@ -90,6 +90,7 @@ public class LibreOfficeUIActivity extends AppCompatActivity implements Settings
     private int filterMode = FileUtilities.ALL;
     private int viewMode;
     private int sortMode;
+    private boolean showHiddenFiles;
 
     FileFilter fileFilter;
     FilenameFilter filenameFilter;
@@ -107,6 +108,7 @@ public class LibreOfficeUIActivity extends AppCompatActivity implements Settings
     public static final String EXPLORER_PREFS_KEY = "EXPLORER_PREFS";
     public static final String SORT_MODE_KEY = "SORT_MODE";
     private static final String RECENT_DOCUMENTS_KEY = "RECENT_DOCUMENTS";
+    private static final String ENABLE_SHOW_HIDDEN_FILES_KEY = "ENABLE_SHOW_HIDDEN_FILES";
 
     public static final String NEW_FILE_PATH_KEY = "NEW_FILE_PATH_KEY";
     public static final String NEW_DOC_TYPE_KEY = "NEW_DOC_TYPE_KEY";
@@ -483,8 +485,18 @@ public class LibreOfficeUIActivity extends AppCompatActivity implements Settings
                 // a different thread
                 currentDirectory = dir[0];
                 try {
-                    filePaths = currentDirectory.listFiles(FileUtilities
+                    List<IFile> paths = currentDirectory.listFiles(FileUtilities
                             .getFileFilter(filterMode));
+                    filePaths = new ArrayList<IFile>();
+                    for(IFile file: paths) {
+                        if(showHiddenFiles){
+                            filePaths.add(file);
+                        } else {
+                            if(!file.getName().startsWith(".")){
+                                filePaths.add(file);
+                            }
+                        }
+                    }
                 }
                 catch (final RuntimeException e) {
                     final Activity activity = LibreOfficeUIActivity.this;
@@ -813,6 +825,7 @@ public class LibreOfficeUIActivity extends AppCompatActivity implements Settings
         SharedPreferences defaultPrefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
         viewMode = Integer.valueOf(defaultPrefs.getString(EXPLORER_VIEW_TYPE_KEY, ""+ GRID_VIEW));
         filterMode = Integer.valueOf(defaultPrefs.getString(FILTER_MODE_KEY , "-1"));
+        showHiddenFiles = Boolean.valueOf(defaultPrefs.getBoolean(ENABLE_SHOW_HIDDEN_FILES_KEY, false));
 
         Intent i = this.getIntent();
         if (i.hasExtra(CURRENT_DIRECTORY_KEY)) {
@@ -850,6 +863,7 @@ public class LibreOfficeUIActivity extends AppCompatActivity implements Settings
         outState.putInt(FILTER_MODE_KEY, filterMode);
         outState.putInt(EXPLORER_VIEW_TYPE_KEY , viewMode);
         outState.putInt(DOC_PROVIDER_KEY, documentProvider.getId());
+        outState.putBoolean(ENABLE_SHOW_HIDDEN_FILES_KEY , showHiddenFiles);
 
         Log.d(LOGTAG, currentDirectory.toString() + Integer.toString(filterMode) + Integer.toString(viewMode));
         //prefs.edit().putInt(EXPLORER_VIEW_TYPE, viewType).commit();
@@ -876,6 +890,7 @@ public class LibreOfficeUIActivity extends AppCompatActivity implements Settings
         }
         filterMode = savedInstanceState.getInt(FILTER_MODE_KEY, FileUtilities.ALL);
         viewMode = savedInstanceState.getInt(EXPLORER_VIEW_TYPE_KEY, GRID_VIEW);
+        showHiddenFiles = savedInstanceState.getBoolean(ENABLE_SHOW_HIDDEN_FILES_KEY, false);
         //openDirectory(currentDirectory);
         Log.d(LOGTAG, "onRestoreInstanceState");
         Log.d(LOGTAG, currentDirectory.toString() + Integer.toString(filterMode) + Integer.toString(viewMode));