Merge "Refactor DashboardFragment."

src/com/android/settings/dashboard/DashboardFragment.java

@@ -17,6 +17,7 @@ package com.android.settings.dashboard;
 
 import android.app.Activity;
 import android.content.Context;
+import android.os.Bundle;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceScreen;
 import android.text.TextUtils;
@@ -45,6 +46,7 @@ public abstract class DashboardFragment extends SettingsPreferenceFragment
             new ArrayMap<>();
 
     protected DashboardFeatureProvider mDashboardFeatureProvider;
+    private boolean mListeningToCategoryChange;
 
     @Override
     public void onAttach(Context context) {
@@ -53,11 +55,32 @@ public abstract class DashboardFragment extends SettingsPreferenceFragment
                 FeatureFactory.getFactory(context).getDashboardFeatureProvider(context);
     }
 
+    @Override
+    public void onCategoriesChanged() {
+        final DashboardCategory category = getDashboardTiles();
+        if (category == null) {
+            return;
+        }
+        refreshAllPreferences(getLogTag());
+    }
+
+    @Override
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+        super.onCreatePreferences(savedInstanceState, rootKey);
+        refreshAllPreferences(getLogTag());
+    }
+
     @Override
     public void onStart() {
         super.onStart();
+        final DashboardCategory category = getDashboardTiles();
+        if (category == null) {
+            return;
+        }
+
         final Activity activity = getActivity();
         if (activity instanceof SettingsDrawerActivity) {
+            mListeningToCategoryChange = true;
             ((SettingsDrawerActivity) activity).addCategoryListener(this);
         }
     }
@@ -77,9 +100,12 @@ public abstract class DashboardFragment extends SettingsPreferenceFragment
     @Override
     public void onStop() {
         super.onStop();
-        final Activity activity = getActivity();
-        if (activity instanceof SettingsDrawerActivity) {
-            ((SettingsDrawerActivity) activity).remCategoryListener(this);
+        if (mListeningToCategoryChange) {
+            final Activity activity = getActivity();
+            if (activity instanceof SettingsDrawerActivity) {
+                ((SettingsDrawerActivity) activity).remCategoryListener(this);
+            }
+            mListeningToCategoryChange = false;
         }
     }
 
@@ -92,9 +118,28 @@ public abstract class DashboardFragment extends SettingsPreferenceFragment
         mPreferenceControllers.put(controller.getClass(), controller);
     }
 
-    protected final void displayTilesAsPreference(String TAG, PreferenceScreen screen,
-            DashboardCategory category) {
+    /**
+     * Returns {@link DashboardCategory} for this fragment.
+     */
+    protected abstract DashboardCategory getDashboardTiles();
+
+    /**
+     * Displays resource based tiles.
+     */
+    protected abstract void displayResourceTiles();
+
+    protected abstract String getLogTag();
+
+    /**
+     * Displays dashboard tiles as preference.
+     */
+    private final void displayDashboardTiles(final String TAG, PreferenceScreen screen) {
         final Context context = getContext();
+        final DashboardCategory category = getDashboardTiles();
+        if (category == null) {
+            Log.d(TAG, "NO dynamic tiles for " + TAG);
+            return;
+        }
         List<Tile> tiles = category.tiles;
         if (tiles == null) {
             Log.d(TAG, "tile list is empty, skipping category " + category.title);
@@ -123,4 +168,19 @@ public abstract class DashboardFragment extends SettingsPreferenceFragment
             screen.addPreference(pref);
         }
     }
+
+    /**
+     * Refresh preference items using system category dashboard items.
+     */
+    private void refreshAllPreferences(final String TAG) {
+        // First remove old preferences.
+        PreferenceScreen screen = getPreferenceScreen();
+        if (screen != null) {
+            screen.removeAll();
+        }
+        // Add resource based tiles.
+        displayResourceTiles();
+        // Add dashboard tiles.
+        displayDashboardTiles(TAG, getPreferenceScreen());
+    }
 }

src/com/android/settings/dashboard/SummaryLoader.java

@@ -80,8 +80,7 @@ public class SummaryLoader {
         mWorker = new Worker(mWorkerThread.getLooper());
         mActivity = activity;
         List<Tile> tiles = categories.tiles;
-        for (int j = 0; j < tiles.size(); j++) {
-            Tile tile = tiles.get(j);
+        for (Tile tile :tiles) {
             mWorker.obtainMessage(Worker.MSG_GET_PROVIDER, tile).sendToTarget();
         }
     }

src/com/android/settings/deviceinfo/StorageDashboardFragment.java

@@ -17,16 +17,14 @@
 package com.android.settings.deviceinfo;
 
 import android.content.Context;
-import android.os.Bundle;
-import android.os.UserManager;
 import android.provider.SearchIndexableResource;
-import android.support.v7.preference.PreferenceScreen;
 
 import com.android.settings.R;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.search.Indexable;
+import com.android.settingslib.drawer.DashboardCategory;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -41,6 +39,11 @@ public class StorageDashboardFragment extends DashboardFragment {
         return STORAGE_CATEGORY_FRAGMENT;
     }
 
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
     @Override
     public void onAttach(Context context) {
         super.onAttach(context);
@@ -48,28 +51,16 @@ public class StorageDashboardFragment extends DashboardFragment {
     }
 
     @Override
-    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
-        super.onCreatePreferences(savedInstanceState, rootKey);
-        refreshAllPreferences();
+    protected DashboardCategory getDashboardTiles() {
+        return mDashboardFeatureProvider.getTilesForStorageCategory();
     }
 
     @Override
-    public void onCategoriesChanged() {
-        refreshAllPreferences();
-    }
-
-    private void refreshAllPreferences() {
-        PreferenceScreen screen = getPreferenceScreen();
-        if (screen != null) {
-            screen.removeAll();
-        }
+    protected void displayResourceTiles() {
         addPreferencesFromResource(R.xml.storage_dashboard_fragment);
 
         getPreferenceController(ManageStoragePreferenceController.class)
                 .displayPreference(getPreferenceScreen());
-
-        displayTilesAsPreference(TAG, getPreferenceScreen(),
-                mDashboardFeatureProvider.getTilesForStorageCategory());
     }
 
     /**

src/com/android/settings/system/SystemDashboardFragment.java

@@ -16,10 +16,8 @@
 package com.android.settings.system;
 
 import android.content.Context;
-import android.os.Bundle;
 import android.os.UserManager;
 import android.provider.SearchIndexableResource;
-import android.support.v7.preference.PreferenceScreen;
 
 import com.android.settings.R;
 import com.android.settings.dashboard.DashboardFragment;
@@ -27,15 +25,14 @@ import com.android.settings.deviceinfo.SystemUpdatePreferenceController;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.search.Indexable;
-import com.android.settingslib.drawer.SettingsDrawerActivity;
+import com.android.settingslib.drawer.DashboardCategory;
 
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
 
-public class SystemDashboardFragment extends DashboardFragment
-        implements SettingsDrawerActivity.CategoryListener, Indexable {
+public class SystemDashboardFragment extends DashboardFragment {
 
     private static final String TAG = "SystemDashboardFrag";
 
@@ -44,6 +41,11 @@ public class SystemDashboardFragment extends DashboardFragment
         return SYSTEM_CATEGORY_FRAGMENT;
     }
 
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
     @Override
     public void onAttach(Context context) {
         super.onAttach(context);
@@ -52,32 +54,16 @@ public class SystemDashboardFragment extends DashboardFragment
     }
 
     @Override
-    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
-        super.onCreatePreferences(savedInstanceState, rootKey);
-        refreshAllPreferences();
-    }
-
-    @Override
-    public void onCategoriesChanged() {
-        refreshAllPreferences();
-    }
-
-    /**
-     * Refresh preference items using system category dashboard items.
-     */
-    private void refreshAllPreferences() {
-        PreferenceScreen screen = getPreferenceScreen();
-        if (screen != null) {
-            screen.removeAll();
-        }
-
+    protected void displayResourceTiles() {
         addPreferencesFromResource(R.xml.system_dashboard_fragment);
 
         getPreferenceController(SystemUpdatePreferenceController.class)
                 .displayPreference(getPreferenceScreen());
+    }
 
-        displayTilesAsPreference(TAG, getPreferenceScreen(),
-                mDashboardFeatureProvider.getTilesForSystemCategory());
+    @Override
+    protected DashboardCategory getDashboardTiles() {
+        return mDashboardFeatureProvider.getTilesForSystemCategory();
     }
 
     /**