Move LauncherApplication's state and code to LauncherAppState.
This removes Launcher's static data and other state out of
the Application object. Now LauncherApplication (extends
Application) exists only to instantiate LauncherAppState.
Change-Id: I4e323bd78b77536b92054105536a55c0c2c19ba8
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
new file mode 100644
index 0000000..fb49d93
--- /dev/null
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * 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 com.android.launcher3;
+
+import android.app.SearchManager;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.res.Configuration;
+import android.database.ContentObserver;
+import android.os.Handler;
+
+import java.lang.ref.WeakReference;
+
+public class LauncherAppState {
+ private Context mContext;
+ private LauncherModel mModel;
+ private IconCache mIconCache;
+ private WidgetPreviewLoader.CacheDb mWidgetPreviewCacheDb;
+ private static boolean sIsScreenLarge;
+ private static float sScreenDensity;
+ private static int sLongPressTimeout = 300;
+ private static final String sSharedPreferencesKey = "com.android.launcher3.prefs";
+ WeakReference<LauncherProvider> mLauncherProvider;
+
+ private static LauncherAppState INSTANCE;
+
+ private static final LauncherAppState INSTANCE = new LauncherAppState();
+
+ public static LauncherAppState getInstance() {
+ return INSTANCE;
+ }
+
+ public static void init(Context context) {
+ INSTANCE.initialize(context);
+ }
+
+ public Context getContext() {
+ return mContext;
+ }
+
+ private LauncherAppState() { }
+
+ private void initialize(Context context) {
+ mContext = context;
+
+ // set sIsScreenXLarge and sScreenDensity *before* creating icon cache
+ sIsScreenLarge = context.getResources().getBoolean(R.bool.is_large_screen);
+ sScreenDensity = context.getResources().getDisplayMetrics().density;
+
+ mWidgetPreviewCacheDb = new WidgetPreviewLoader.CacheDb(context);
+ mIconCache = new IconCache(context);
+ mModel = new LauncherModel(context, mIconCache);
+
+ // Register intent receivers
+ IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
+ filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
+ filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
+ filter.addDataScheme("package");
+ context.registerReceiver(mModel, filter);
+ filter = new IntentFilter();
+ filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE);
+ filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
+ filter.addAction(Intent.ACTION_LOCALE_CHANGED);
+ filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
+ context.registerReceiver(mModel, filter);
+ filter = new IntentFilter();
+ filter.addAction(SearchManager.INTENT_GLOBAL_SEARCH_ACTIVITY_CHANGED);
+ context.registerReceiver(mModel, filter);
+ filter = new IntentFilter();
+ filter.addAction(SearchManager.INTENT_ACTION_SEARCHABLES_CHANGED);
+ context.registerReceiver(mModel, filter);
+
+ // Register for changes to the favorites
+ ContentResolver resolver = context.getContentResolver();
+ resolver.registerContentObserver(LauncherSettings.Favorites.CONTENT_URI, true,
+ mFavoritesObserver);
+ }
+
+ /**
+ * Call from Application.onTerminate(), which is not guaranteed to ever be called.
+ */
+ public void onTerminate() {
+ mContext.unregisterReceiver(mModel);
+
+ ContentResolver resolver = mContext.getContentResolver();
+ resolver.unregisterContentObserver(mFavoritesObserver);
+ }
+
+ /**
+ * Receives notifications whenever the user favorites have changed.
+ */
+ private final ContentObserver mFavoritesObserver = new ContentObserver(new Handler()) {
+ @Override
+ public void onChange(boolean selfChange) {
+ // If the database has ever changed, then we really need to force a reload of the
+ // workspace on the next load
+ mModel.resetLoadedState(false, true);
+ mModel.startLoaderFromBackground();
+ }
+ };
+
+ LauncherModel setLauncher(Launcher launcher) {
+ mModel.initialize(launcher);
+ return mModel;
+ }
+
+ IconCache getIconCache() {
+ return mIconCache;
+ }
+
+ LauncherModel getModel() {
+ return mModel;
+ }
+
+ WidgetPreviewLoader.CacheDb getWidgetPreviewCacheDb() {
+ return mWidgetPreviewCacheDb;
+ }
+
+ void setLauncherProvider(LauncherProvider provider) {
+ mLauncherProvider = new WeakReference<LauncherProvider>(provider);
+ }
+
+ LauncherProvider getLauncherProvider() {
+ return mLauncherProvider.get();
+ }
+
+ public static String getSharedPreferencesKey() {
+ return sSharedPreferencesKey;
+ }
+
+ public static boolean isScreenLarge() {
+ return sIsScreenLarge;
+ }
+
+ public static boolean isScreenLandscape(Context context) {
+ return context.getResources().getConfiguration().orientation ==
+ Configuration.ORIENTATION_LANDSCAPE;
+ }
+
+ public static float getScreenDensity() {
+ return sScreenDensity;
+ }
+
+ public static int getLongPressTimeout() {
+ return sLongPressTimeout;
+ }
+}