| /* |
| * Copyright (C) 2014 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.systemui.recents; |
| |
| import android.appwidget.AppWidgetHost; |
| import android.appwidget.AppWidgetHostView; |
| import android.appwidget.AppWidgetProviderInfo; |
| import android.content.Context; |
| |
| /** Our special app widget host for the Search widget */ |
| public class RecentsAppWidgetHost extends AppWidgetHost { |
| |
| /* Callbacks to notify when an app package changes */ |
| interface RecentsAppWidgetHostCallbacks { |
| void refreshSearchWidgetView(); |
| } |
| |
| RecentsAppWidgetHostCallbacks mCb; |
| boolean mIsListening; |
| |
| public RecentsAppWidgetHost(Context context, int hostId) { |
| super(context, hostId); |
| } |
| |
| public void startListening(RecentsAppWidgetHostCallbacks cb) { |
| mCb = cb; |
| if (!mIsListening) { |
| mIsListening = true; |
| super.startListening(); |
| } |
| } |
| |
| @Override |
| public void stopListening() { |
| if (mIsListening) { |
| super.stopListening(); |
| } |
| // Ensure that we release any references to the callbacks |
| mCb = null; |
| mIsListening = false; |
| } |
| |
| @Override |
| protected AppWidgetHostView onCreateView(Context context, int appWidgetId, |
| AppWidgetProviderInfo appWidget) { |
| return new RecentsAppWidgetHostView(context); |
| } |
| |
| /** |
| * Note: this is only called for packages that have updated, not removed. |
| */ |
| @Override |
| protected void onProviderChanged(int appWidgetId, AppWidgetProviderInfo appWidgetInfo) { |
| super.onProviderChanged(appWidgetId, appWidgetInfo); |
| if (mIsListening && mCb != null) { |
| mCb.refreshSearchWidgetView(); |
| } |
| } |
| } |