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