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      1 /*
      2  * Copyright (C) 2014 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.recents;
     18 
     19 /**
     20  * The launch state of the RecentsActivity.
     21  *
     22  * Current Constraints:
     23  *  - needed in onStart() before onNewIntent()
     24  *  - needs to be reset when Recents is hidden
     25  *  - needs to be computed in Recents component
     26  *  - needs to be accessible by views
     27  */
     28 public class RecentsActivityLaunchState {
     29 
     30     public boolean launchedWithAltTab;
     31     public boolean launchedFromApp;
     32     public boolean launchedFromBlacklistedApp;
     33     public boolean launchedFromHome;
     34     public boolean launchedViaDragGesture;
     35     public boolean launchedViaDockGesture;
     36     public int launchedToTaskId;
     37     public int launchedNumVisibleTasks;
     38     public int launchedNumVisibleThumbnails;
     39 
     40     public void reset() {
     41         launchedFromHome = false;
     42         launchedFromApp = false;
     43         launchedFromBlacklistedApp = false;
     44         launchedToTaskId = -1;
     45         launchedWithAltTab = false;
     46         launchedViaDragGesture = false;
     47         launchedViaDockGesture = false;
     48     }
     49 
     50     /**
     51      * Returns the task to focus given the current launch state.
     52      */
     53     public int getInitialFocusTaskIndex(int numTasks) {
     54         RecentsDebugFlags debugFlags = Recents.getDebugFlags();
     55         RecentsActivityLaunchState launchState = Recents.getConfiguration().getLaunchState();
     56         if (launchedFromApp) {
     57             if (!launchState.launchedWithAltTab && debugFlags.isFastToggleRecentsEnabled()) {
     58                 // If fast toggling, focus the front most task so that the next tap will launch the
     59                 // task
     60                 return numTasks - 1;
     61             }
     62 
     63             if (launchState.launchedFromBlacklistedApp) {
     64                 // If we are launching from a blacklisted app, focus the front most task so that the
     65                 // next tap will launch the task
     66                 return numTasks - 1;
     67             }
     68 
     69             // If coming from another app, focus the next task
     70             return Math.max(0, numTasks - 2);
     71         } else {
     72             if (!launchState.launchedWithAltTab && debugFlags.isFastToggleRecentsEnabled()) {
     73                 // If fast toggling, defer focusing until the next tap (which will automatically
     74                 // focus the front most task)
     75                 return -1;
     76             }
     77 
     78             // If coming from home, focus the front most task
     79             return numTasks - 1;
     80         }
     81     }
     82 }
     83