1 /* 2 * Copyright (C) 2009 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.launcher2; 18 19 import android.appwidget.AppWidgetHostView; 20 import android.content.ComponentName; 21 import android.content.ContentValues; 22 import android.content.Context; 23 24 /** 25 * Represents a widget (either instantiated or about to be) in the Launcher. 26 */ 27 class LauncherAppWidgetInfo extends ItemInfo { 28 29 /** 30 * Indicates that the widget hasn't been instantiated yet. 31 */ 32 static final int NO_ID = -1; 33 34 /** 35 * Identifier for this widget when talking with 36 * {@link android.appwidget.AppWidgetManager} for updates. 37 */ 38 int appWidgetId = NO_ID; 39 40 ComponentName providerName; 41 42 // TODO: Are these necessary here? 43 int minWidth = -1; 44 int minHeight = -1; 45 46 private boolean mHasNotifiedInitialWidgetSizeChanged; 47 48 /** 49 * View that holds this widget after it's been created. This view isn't created 50 * until Launcher knows it's needed. 51 */ 52 AppWidgetHostView hostView = null; 53 LauncherAppWidgetInfo(int appWidgetId, ComponentName providerName)54 LauncherAppWidgetInfo(int appWidgetId, ComponentName providerName) { 55 itemType = LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET; 56 this.appWidgetId = appWidgetId; 57 this.providerName = providerName; 58 59 // Since the widget isn't instantiated yet, we don't know these values. Set them to -1 60 // to indicate that they should be calculated based on the layout and minWidth/minHeight 61 spanX = -1; 62 spanY = -1; 63 } 64 65 @Override onAddToDatabase(Context context, ContentValues values)66 void onAddToDatabase(Context context, ContentValues values) { 67 super.onAddToDatabase(context, values); 68 values.put(LauncherSettings.Favorites.APPWIDGET_ID, appWidgetId); 69 } 70 71 /** 72 * When we bind the widget, we should notify the widget that the size has changed if we have not 73 * done so already (only really for default workspace widgets). 74 */ onBindAppWidget(Launcher launcher)75 void onBindAppWidget(Launcher launcher) { 76 if (!mHasNotifiedInitialWidgetSizeChanged) { 77 notifyWidgetSizeChanged(launcher); 78 } 79 } 80 81 /** 82 * Trigger an update callback to the widget to notify it that its size has changed. 83 */ notifyWidgetSizeChanged(Launcher launcher)84 void notifyWidgetSizeChanged(Launcher launcher) { 85 AppWidgetResizeFrame.updateWidgetSizeRanges(hostView, launcher, spanX, spanY); 86 mHasNotifiedInitialWidgetSizeChanged = true; 87 } 88 89 @Override toString()90 public String toString() { 91 return "AppWidget(id=" + Integer.toString(appWidgetId) + ")"; 92 } 93 94 @Override unbind()95 void unbind() { 96 super.unbind(); 97 hostView = null; 98 } 99 } 100