1 /* 2 * Copyright (C) 2012 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.systemui.recent; 18 19 import android.app.Activity; 20 import android.app.ActivityManager; 21 import android.app.WallpaperManager; 22 import android.content.BroadcastReceiver; 23 import android.content.Context; 24 import android.content.Intent; 25 import android.content.IntentFilter; 26 import android.os.Bundle; 27 import android.os.UserHandle; 28 import android.view.MotionEvent; 29 import android.view.View; 30 import android.view.WindowManager; 31 32 import com.android.systemui.R; 33 import com.android.systemui.statusbar.tablet.StatusBarPanel; 34 35 import java.util.List; 36 37 public class RecentsActivity extends Activity { 38 public static final String TOGGLE_RECENTS_INTENT = "com.android.systemui.recent.action.TOGGLE_RECENTS"; 39 public static final String PRELOAD_INTENT = "com.android.systemui.recent.action.PRELOAD"; 40 public static final String CANCEL_PRELOAD_INTENT = "com.android.systemui.recent.CANCEL_PRELOAD"; 41 public static final String CLOSE_RECENTS_INTENT = "com.android.systemui.recent.action.CLOSE"; 42 public static final String WINDOW_ANIMATION_START_INTENT = "com.android.systemui.recent.action.WINDOW_ANIMATION_START"; 43 public static final String PRELOAD_PERMISSION = "com.android.systemui.recent.permission.PRELOAD"; 44 public static final String WAITING_FOR_WINDOW_ANIMATION_PARAM = "com.android.systemui.recent.WAITING_FOR_WINDOW_ANIMATION"; 45 private static final String WAS_SHOWING = "was_showing"; 46 47 private RecentsPanelView mRecentsPanel; 48 private IntentFilter mIntentFilter; 49 private boolean mShowing; 50 private boolean mForeground; 51 52 private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() { 53 @Override 54 public void onReceive(Context context, Intent intent) { 55 if (CLOSE_RECENTS_INTENT.equals(intent.getAction())) { 56 if (mRecentsPanel != null && mRecentsPanel.isShowing()) { 57 if (mShowing && !mForeground) { 58 // Captures the case right before we transition to another activity 59 mRecentsPanel.show(false); 60 } 61 } 62 } else if (WINDOW_ANIMATION_START_INTENT.equals(intent.getAction())) { 63 if (mRecentsPanel != null) { 64 mRecentsPanel.onWindowAnimationStart(); 65 } 66 } 67 } 68 }; 69 70 public class TouchOutsideListener implements View.OnTouchListener { 71 private StatusBarPanel mPanel; 72 73 public TouchOutsideListener(StatusBarPanel panel) { 74 mPanel = panel; 75 } 76 77 public boolean onTouch(View v, MotionEvent ev) { 78 final int action = ev.getAction(); 79 if (action == MotionEvent.ACTION_OUTSIDE 80 || (action == MotionEvent.ACTION_DOWN 81 && !mPanel.isInContentArea((int) ev.getX(), (int) ev.getY()))) { 82 dismissAndGoHome(); 83 return true; 84 } 85 return false; 86 } 87 } 88 89 @Override 90 public void onPause() { 91 overridePendingTransition( 92 R.anim.recents_return_to_launcher_enter, 93 R.anim.recents_return_to_launcher_exit); 94 mForeground = false; 95 super.onPause(); 96 } 97 98 @Override 99 public void onStop() { 100 mShowing = false; 101 if (mRecentsPanel != null) { 102 mRecentsPanel.onUiHidden(); 103 } 104 super.onStop(); 105 } 106 107 private void updateWallpaperVisibility(boolean visible) { 108 int wpflags = visible ? WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER : 0; 109 int curflags = getWindow().getAttributes().flags 110 & WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER; 111 if (wpflags != curflags) { 112 getWindow().setFlags(wpflags, WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER); 113 } 114 } 115 116 public static boolean forceOpaqueBackground(Context context) { 117 return WallpaperManager.getInstance(context).getWallpaperInfo() != null; 118 } 119 120 @Override 121 public void onStart() { 122 // Hide wallpaper if it's not a static image 123 if (forceOpaqueBackground(this)) { 124 updateWallpaperVisibility(false); 125 } else { 126 updateWallpaperVisibility(true); 127 } 128 mShowing = true; 129 if (mRecentsPanel != null) { 130 mRecentsPanel.refreshViews(); 131 } 132 super.onStart(); 133 } 134 135 @Override 136 public void onResume() { 137 mForeground = true; 138 super.onResume(); 139 } 140 141 @Override 142 public void onBackPressed() { 143 dismissAndGoBack(); 144 } 145 146 public void dismissAndGoHome() { 147 if (mRecentsPanel != null) { 148 Intent homeIntent = new Intent(Intent.ACTION_MAIN, null); 149 homeIntent.addCategory(Intent.CATEGORY_HOME); 150 homeIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK 151 | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED); 152 startActivityAsUser(homeIntent, new UserHandle(UserHandle.USER_CURRENT)); 153 mRecentsPanel.show(false); 154 } 155 } 156 157 public void dismissAndGoBack() { 158 if (mRecentsPanel != null) { 159 final ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); 160 161 final List<ActivityManager.RecentTaskInfo> recentTasks = 162 am.getRecentTasks(2, 163 ActivityManager.RECENT_WITH_EXCLUDED | 164 ActivityManager.RECENT_IGNORE_UNAVAILABLE); 165 if (recentTasks.size() > 1 && 166 mRecentsPanel.simulateClick(recentTasks.get(1).persistentId)) { 167 // recents panel will take care of calling show(false) through simulateClick 168 return; 169 } 170 mRecentsPanel.show(false); 171 } 172 finish(); 173 } 174 175 @Override 176 protected void onCreate(Bundle savedInstanceState) { 177 setContentView(R.layout.status_bar_recent_panel); 178 mRecentsPanel = (RecentsPanelView) findViewById(R.id.recents_root); 179 mRecentsPanel.setOnTouchListener(new TouchOutsideListener(mRecentsPanel)); 180 181 final RecentTasksLoader recentTasksLoader = RecentTasksLoader.getInstance(this); 182 recentTasksLoader.setRecentsPanel(mRecentsPanel, mRecentsPanel); 183 mRecentsPanel.setMinSwipeAlpha( 184 getResources().getInteger(R.integer.config_recent_item_min_alpha) / 100f); 185 186 if (savedInstanceState == null || 187 savedInstanceState.getBoolean(WAS_SHOWING)) { 188 handleIntent(getIntent(), (savedInstanceState == null)); 189 } 190 mIntentFilter = new IntentFilter(); 191 mIntentFilter.addAction(CLOSE_RECENTS_INTENT); 192 mIntentFilter.addAction(WINDOW_ANIMATION_START_INTENT); 193 registerReceiver(mIntentReceiver, mIntentFilter); 194 super.onCreate(savedInstanceState); 195 } 196 197 @Override 198 protected void onSaveInstanceState(Bundle outState) { 199 outState.putBoolean(WAS_SHOWING, mRecentsPanel.isShowing()); 200 } 201 202 @Override 203 protected void onDestroy() { 204 RecentTasksLoader.getInstance(this).setRecentsPanel(null, mRecentsPanel); 205 unregisterReceiver(mIntentReceiver); 206 super.onDestroy(); 207 } 208 209 @Override 210 protected void onNewIntent(Intent intent) { 211 handleIntent(intent, true); 212 } 213 214 private void handleIntent(Intent intent, boolean checkWaitingForAnimationParam) { 215 super.onNewIntent(intent); 216 217 if (TOGGLE_RECENTS_INTENT.equals(intent.getAction())) { 218 if (mRecentsPanel != null) { 219 if (mRecentsPanel.isShowing()) { 220 dismissAndGoBack(); 221 } else { 222 final RecentTasksLoader recentTasksLoader = RecentTasksLoader.getInstance(this); 223 boolean waitingForWindowAnimation = checkWaitingForAnimationParam && 224 intent.getBooleanExtra(WAITING_FOR_WINDOW_ANIMATION_PARAM, false); 225 mRecentsPanel.show(true, recentTasksLoader.getLoadedTasks(), 226 recentTasksLoader.isFirstScreenful(), waitingForWindowAnimation); 227 } 228 } 229 } 230 } 231 232 boolean isForeground() { 233 return mForeground; 234 } 235 236 boolean isActivityShowing() { 237 return mShowing; 238 } 239 } 240