diff options
Diffstat (limited to 'src/com/android/launcher3/LauncherAppState.java')
-rw-r--r-- | src/com/android/launcher3/LauncherAppState.java | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java new file mode 100644 index 000000000..fb49d9398 --- /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; + } +} |