Add option to grey out apps requiring anti-features.

app/src/main/java/org/fdroid/fdroid/AppFilter.java

@@ -32,7 +32,9 @@ public class AppFilter {
                 }
             }
         }
-
+        if (app.antiFeatures != null && Preferences.get().filterAppsWithAntiFeatures()) {
+            return true;
+        }
         return false;
     }
 

app/src/main/java/org/fdroid/fdroid/FDroidApp.java

@@ -234,6 +234,16 @@ public class FDroidApp extends Application {
             }
         });
 
+        // If the user changes the preference to do with filtering anti-feature apps,
+        // it is easier to just notify a change in the app provider,
+        // so that the newly updated list will correctly filter relevant apps.
+        Preferences.get().registerAppsRequiringAntiFeaturesChangeListener(new Preferences.ChangeListener() {
+            @Override
+            public void onPreferenceChange() {
+                getContentResolver().notifyChange(AppProvider.getContentUri(), null);
+            }
+        });
+
         // This is added so that the bluetooth:// scheme we use for URLs the BluetoothDownloader
         // understands is not treated as invalid by the java.net.URL class. The actual Handler does
         // nothing, but its presence is enough.

app/src/main/java/org/fdroid/fdroid/Preferences.java

@@ -49,6 +49,7 @@ public final class Preferences implements SharedPreferences.OnSharedPreferenceCh
     public static final String PREF_UPD_NOTIFY = "updateNotify";
     public static final String PREF_UPD_HISTORY = "updateHistoryDays";
     public static final String PREF_ROOTED = "rooted";
+    public static final String PREF_ANTI_FEATURE_APPS = "hideAntiFeatureApps";
     public static final String PREF_INCOMP_VER = "incompatibleVersions";
     public static final String PREF_THEME = "theme";
     public static final String PREF_IGN_TOUCH = "ignoreTouchscreen";
@@ -68,6 +69,7 @@ public final class Preferences implements SharedPreferences.OnSharedPreferenceCh
     public static final String PREF_POST_PRIVILEGED_INSTALL = "postPrivilegedInstall";
 
     private static final boolean DEFAULT_ROOTED = true;
+    private static final boolean DEFAULT_ANTI_FEATURE_APPS = false;
     private static final int DEFAULT_UPD_HISTORY = 14;
     private static final boolean DEFAULT_PRIVILEGED_INSTALLER = true;
     //private static final boolean DEFAULT_LOCAL_REPO_BONJOUR = true;
@@ -92,10 +94,12 @@ public final class Preferences implements SharedPreferences.OnSharedPreferenceCh
     }
 
     private boolean filterAppsRequiringRoot = DEFAULT_ROOTED;
+    private boolean filterAppsWithAntiFeatures = DEFAULT_ANTI_FEATURE_APPS;
 
     private final Map<String, Boolean> initialized = new HashMap<>();
 
     private final List<ChangeListener> filterAppsRequiringRootListeners = new ArrayList<>();
+    private final List<ChangeListener> filterAppsRequiringAntiFeaturesListeners = new ArrayList<>();
     private final List<ChangeListener> updateHistoryListeners = new ArrayList<>();
     private final List<ChangeListener> localRepoNameListeners = new ArrayList<>();
     private final List<ChangeListener> localRepoHttpsListeners = new ArrayList<>();
@@ -300,6 +304,20 @@ public final class Preferences implements SharedPreferences.OnSharedPreferenceCh
         return filterAppsRequiringRoot;
     }
 
+    /**
+     * This is cached as it is called several times inside the AppListAdapter.
+     * Providing it here means the shared preferences file only needs to be
+     * read once, and we will keep our copy up to date by listening to changes
+     * in PREF_ANTI_FEATURE_APPS.
+     */
+    public boolean filterAppsWithAntiFeatures() {
+        if (!isInitialized(PREF_ANTI_FEATURE_APPS)) {
+            initialize(PREF_ANTI_FEATURE_APPS);
+            filterAppsWithAntiFeatures = preferences.getBoolean(PREF_ANTI_FEATURE_APPS, DEFAULT_ANTI_FEATURE_APPS);
+        }
+        return filterAppsWithAntiFeatures;
+    }
+
     public void registerAppsRequiringRootChangeListener(ChangeListener listener) {
         filterAppsRequiringRootListeners.add(listener);
     }
@@ -308,6 +326,14 @@ public final class Preferences implements SharedPreferences.OnSharedPreferenceCh
         filterAppsRequiringRootListeners.remove(listener);
     }
 
+    public void registerAppsRequiringAntiFeaturesChangeListener(ChangeListener listener) {
+        filterAppsRequiringAntiFeaturesListeners.add(listener);
+    }
+
+    public void unregisterAppsRequiringAntiFeaturesChangeListener(ChangeListener listener) {
+        filterAppsRequiringAntiFeaturesListeners.remove(listener);
+    }
+
     public void registerUnstableUpdatesChangeListener(ChangeListener listener) {
         unstableUpdatesListeners.add(listener);
     }
@@ -327,6 +353,11 @@ public final class Preferences implements SharedPreferences.OnSharedPreferenceCh
                     listener.onPreferenceChange();
                 }
                 break;
+            case PREF_ANTI_FEATURE_APPS:
+                for (ChangeListener listener : filterAppsRequiringAntiFeaturesListeners) {
+                    listener.onPreferenceChange();
+                }
+                break;
             case PREF_UPD_HISTORY:
                 for (ChangeListener listener : updateHistoryListeners) {
                     listener.onPreferenceChange();

app/src/main/java/org/fdroid/fdroid/views/fragments/AppListFragment.java

@@ -51,13 +51,15 @@ public abstract class AppListFragment extends ListFragment implements
             AppMetadataTable.Cols.SuggestedApk.VERSION_NAME,
             AppMetadataTable.Cols.SUGGESTED_VERSION_CODE,
             AppMetadataTable.Cols.REQUIREMENTS, // Needed for filtering apps that require root.
+            AppMetadataTable.Cols.ANTI_FEATURES // Needed for filtering apps that require anti-features.
     };
 
     private static final String APP_SORT = AppMetadataTable.Cols.NAME;
 
     private AppListAdapter appAdapter;
 
-    @Nullable private String searchQuery;
+    @Nullable
+    private String searchQuery;
 
     protected abstract AppListAdapter getAppListAdapter();
 
@@ -85,6 +87,7 @@ public abstract class AppListFragment extends ListFragment implements
     /**
      * Alerts the child class that the user is no longer performing a search.
      * This is triggered every time the search query is blank.
+     *
      * @see AppListFragment#onSearch()
      */
     protected void onSearchStopped() {
@@ -166,7 +169,7 @@ public abstract class AppListFragment extends ListFragment implements
                 Bundle bundle = ActivityOptionsCompat
                         .makeSceneTransitionAnimation(getActivity(),
                                 iconTransitionPair)
-                                .toBundle();
+                        .toBundle();
                 startActivityForResult(intent, REQUEST_APPDETAILS, bundle);
             } else {
                 startActivityForResult(intent, REQUEST_APPDETAILS);
@@ -204,6 +207,7 @@ public abstract class AppListFragment extends ListFragment implements
      * Notifies the subclass via {@link AppListFragment#onSearch()} and {@link AppListFragment#onSearchStopped()}
      * about whether or not a search is taking place and changes empty message
      * appropriately.
+     *
      * @return True if a user is searching.
      */
     private boolean updateSearchStatus() {

app/src/main/java/org/fdroid/fdroid/views/fragments/PreferencesFragment.java

@@ -33,6 +33,7 @@ public class PreferencesFragment extends PreferenceFragment
         Preferences.PREF_UPD_NOTIFY,
         Preferences.PREF_UPD_HISTORY,
         Preferences.PREF_ROOTED,
+        Preferences.PREF_ANTI_FEATURE_APPS,
         Preferences.PREF_INCOMP_VER,
         Preferences.PREF_THEME,
         Preferences.PREF_IGN_TOUCH,
@@ -123,6 +124,10 @@ public class PreferencesFragment extends PreferenceFragment
                 checkSummary(key, R.string.rooted_on);
                 break;
 
+            case Preferences.PREF_ANTI_FEATURE_APPS:
+                checkSummary(key, R.string.anti_feature_apps_on);
+                break;
+
             case Preferences.PREF_IGN_TOUCH:
                 checkSummary(key, R.string.ignoreTouch_on);
                 break;

app/src/main/res/values/strings.xml

@@ -148,6 +148,8 @@
     <string name="show_incompat_versions_on">Show app versions incompatible with the device</string>
     <string name="rooted">Ignore root</string>
     <string name="rooted_on">Do not grey out apps requiring root privileges</string>
+    <string name="anti_feature_apps">Grey out anti-feature apps</string>
+    <string name="anti_feature_apps_on">Grey out apps requiring anti-features</string>
     <string name="ignoreTouch">Ignore touchscreen</string>
     <string name="ignoreTouch_on">Always include apps that require touchscreen</string>
 

app/src/main/res/xml/preferences.xml

@@ -42,6 +42,9 @@
         <CheckBoxPreference android:title="@string/rooted"
             android:defaultValue="true"
             android:key="rooted" />
+        <CheckBoxPreference android:title="@string/anti_feature_apps"
+            android:defaultValue="false"
+            android:key="hideAntiFeatureApps" />
         <CheckBoxPreference android:title="@string/ignoreTouch"
             android:defaultValue="false"
             android:key="ignoreTouchscreen" />