AppStateBaseBridge.java revision 67cd6ab93a526fe65877743e458590f4e6f187ee
1/* 2 * Copyright (C) 2015 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 */ 16package com.android.settings.applications; 17 18import android.os.Handler; 19import android.os.Looper; 20import android.os.Message; 21 22import com.android.settingslib.applications.ApplicationsState; 23import com.android.settingslib.applications.ApplicationsState.AppEntry; 24import com.android.settingslib.applications.ApplicationsState.Session; 25 26import java.util.ArrayList; 27 28/** 29 * Common base class for bridging information to ApplicationsState. 30 */ 31public abstract class AppStateBaseBridge implements ApplicationsState.Callbacks { 32 33 protected final ApplicationsState mAppState; 34 protected final Session mAppSession; 35 protected final Callback mCallback; 36 protected final BackgroundHandler mHandler; 37 protected final MainHandler mMainHandler; 38 39 public AppStateBaseBridge(ApplicationsState appState, Callback callback) { 40 mAppState = appState; 41 mAppSession = mAppState != null ? mAppState.newSession(this) : null; 42 mCallback = callback; 43 // Running on the same background thread as the ApplicationsState lets 44 // us run in the background and make sure they aren't doing updates at 45 // the same time as us as well. 46 mHandler = new BackgroundHandler(mAppState.getBackgroundLooper()); 47 mMainHandler = new MainHandler(); 48 } 49 50 public void resume() { 51 mHandler.sendEmptyMessage(BackgroundHandler.MSG_LOAD_ALL); 52 mAppSession.resume(); 53 } 54 55 public void pause() { 56 mAppSession.pause(); 57 } 58 59 public void release() { 60 mAppSession.release(); 61 } 62 63 public void forceUpdate(String pkg, int uid) { 64 mHandler.obtainMessage(BackgroundHandler.MSG_FORCE_LOAD_PKG, uid, 0, pkg).sendToTarget(); 65 } 66 67 @Override 68 public void onPackageListChanged() { 69 mHandler.sendEmptyMessage(BackgroundHandler.MSG_LOAD_ALL); 70 } 71 72 @Override 73 public void onLoadEntriesCompleted() { 74 mHandler.sendEmptyMessage(BackgroundHandler.MSG_LOAD_ALL); 75 } 76 77 @Override 78 public void onRunningStateChanged(boolean running) { 79 // No op. 80 } 81 82 @Override 83 public void onRebuildComplete(ArrayList<AppEntry> apps) { 84 // No op. 85 } 86 87 @Override 88 public void onPackageIconChanged() { 89 // No op. 90 } 91 92 @Override 93 public void onPackageSizeChanged(String packageName) { 94 // No op. 95 } 96 97 @Override 98 public void onAllSizesComputed() { 99 // No op. 100 } 101 102 @Override 103 public void onLauncherInfoChanged() { 104 // No op. 105 } 106 107 protected abstract void loadAllExtraInfo(); 108 protected abstract void updateExtraInfo(AppEntry app, String pkg, int uid); 109 110 private class MainHandler extends Handler { 111 private static final int MSG_INFO_UPDATED = 1; 112 113 @Override 114 public void handleMessage(Message msg) { 115 switch (msg.what) { 116 case MSG_INFO_UPDATED: 117 mCallback.onExtraInfoUpdated(); 118 break; 119 } 120 } 121 } 122 123 private class BackgroundHandler extends Handler { 124 private static final int MSG_LOAD_ALL = 1; 125 private static final int MSG_FORCE_LOAD_PKG = 2; 126 127 public BackgroundHandler(Looper looper) { 128 super(looper); 129 } 130 131 @Override 132 public void handleMessage(Message msg) { 133 switch (msg.what) { 134 case MSG_LOAD_ALL: 135 loadAllExtraInfo(); 136 mMainHandler.sendEmptyMessage(MainHandler.MSG_INFO_UPDATED); 137 break; 138 case MSG_FORCE_LOAD_PKG: 139 ArrayList<AppEntry> apps = mAppSession.getAllApps(); 140 final int N = apps.size(); 141 String pkg = (String) msg.obj; 142 int uid = msg.arg1; 143 for (int i = 0; i < N; i++) { 144 AppEntry app = apps.get(i); 145 if (app.info.uid == uid && pkg.equals(app.info.packageName)) { 146 updateExtraInfo(app, pkg, uid); 147 } 148 } 149 mMainHandler.sendEmptyMessage(MainHandler.MSG_INFO_UPDATED); 150 break; 151 } 152 } 153 } 154 155 156 public interface Callback { 157 void onExtraInfoUpdated(); 158 } 159} 160