1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.email.provider; 18 19 import android.app.Service; 20 import android.appwidget.AppWidgetManager; 21 import android.appwidget.AppWidgetProvider; 22 import android.content.ComponentName; 23 import android.content.Context; 24 import android.content.Intent; 25 import android.util.Log; 26 import android.widget.RemoteViewsService; 27 28 import com.android.email.Email; 29 import com.android.email.R; 30 import com.android.email.widget.EmailWidget; 31 import com.android.email.widget.WidgetManager; 32 import com.android.emailcommon.Logging; 33 34 import java.io.FileDescriptor; 35 import java.io.PrintWriter; 36 37 public class WidgetProvider extends AppWidgetProvider { 38 @Override onEnabled(final Context context)39 public void onEnabled(final Context context) { 40 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 41 Log.d(EmailWidget.TAG, "onEnabled"); 42 } 43 super.onEnabled(context); 44 } 45 46 @Override onDisabled(Context context)47 public void onDisabled(Context context) { 48 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 49 Log.d(EmailWidget.TAG, "onDisabled"); 50 } 51 context.stopService(new Intent(context, WidgetService.class)); 52 super.onDisabled(context); 53 } 54 55 @Override onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds)56 public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { 57 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 58 Log.d(EmailWidget.TAG, "onUpdate"); 59 } 60 super.onUpdate(context, appWidgetManager, appWidgetIds); 61 WidgetManager.getInstance().updateWidgets(context, appWidgetIds); 62 } 63 64 @Override onDeleted(Context context, int[] appWidgetIds)65 public void onDeleted(Context context, int[] appWidgetIds) { 66 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 67 Log.d(EmailWidget.TAG, "onDeleted"); 68 } 69 WidgetManager.getInstance().deleteWidgets(context, appWidgetIds); 70 super.onDeleted(context, appWidgetIds); 71 } 72 73 @Override onReceive(final Context context, Intent intent)74 public void onReceive(final Context context, Intent intent) { 75 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 76 Log.d(EmailWidget.TAG, "onReceive"); 77 } 78 super.onReceive(context, intent); 79 80 if (EmailProvider.ACTION_NOTIFY_MESSAGE_LIST_DATASET_CHANGED.equals(intent.getAction())) { 81 // Retrieve the list of current widgets. 82 final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context); 83 final ComponentName component = new ComponentName(context, WidgetProvider.class); 84 final int[] widgetIds = appWidgetManager.getAppWidgetIds(component); 85 86 // Ideally, this would only call notify AppWidgetViewDataChanged for the widgets, where 87 // the account had the change, but the current intent doesn't include this information. 88 89 // Calling notifyAppWidgetViewDataChanged will cause onDataSetChanged() to be called 90 // on the RemoteViewsService.RemoteViewsFactory, starting the service if necessary. 91 appWidgetManager.notifyAppWidgetViewDataChanged(widgetIds, R.id.message_list); 92 } 93 } 94 95 /** 96 * We use the WidgetService for two purposes: 97 * 1) To provide a widget factory for RemoteViews, and 98 * 2) Catch our command Uri's (i.e. take actions on user clicks) and let EmailWidget 99 * handle them. 100 */ 101 public static class WidgetService extends RemoteViewsService { 102 @Override onGetViewFactory(Intent intent)103 public RemoteViewsFactory onGetViewFactory(Intent intent) { 104 // Which widget do we want (nice alliteration, huh?) 105 int widgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1); 106 if (widgetId == -1) return null; 107 // Find the existing widget or create it 108 return WidgetManager.getInstance().getOrCreateWidget(this, widgetId); 109 } 110 111 @Override onStartCommand(Intent intent, int flags, int startId)112 public int onStartCommand(Intent intent, int flags, int startId) { 113 if (intent.getData() != null) { 114 // EmailWidget creates intents, so it knows how to handle them. 115 EmailWidget.processIntent(this, intent); 116 } 117 return Service.START_NOT_STICKY; 118 } 119 120 @Override dump(FileDescriptor fd, PrintWriter writer, String[] args)121 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 122 WidgetManager.getInstance().dump(fd, writer, args); 123 } 124 } 125 } 126