Task.java revision 37c8d8ef855aacb074ee0b702a46dbc62b7551a2
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 17package com.android.systemui.recents.model; 18 19import android.content.Intent; 20import android.graphics.Bitmap; 21import android.graphics.drawable.Drawable; 22import com.android.systemui.recents.Constants; 23 24 25/** 26 * A task represents the top most task in the system's task stack. 27 */ 28public class Task { 29 /* Task callbacks */ 30 public interface TaskCallbacks { 31 /* Notifies when a task has been bound */ 32 public void onTaskDataLoaded(boolean reloadingTaskData); 33 /* Notifies when a task has been unbound */ 34 public void onTaskDataUnloaded(); 35 } 36 37 /* The Task Key represents the unique primary key for the task */ 38 public static class TaskKey { 39 public final int id; 40 public final Intent intent; 41 42 public TaskKey(int id, Intent intent) { 43 this.id = id; 44 this.intent = intent; 45 } 46 47 @Override 48 public boolean equals(Object o) { 49 return hashCode() == o.hashCode(); 50 } 51 52 @Override 53 public int hashCode() { 54 return id; 55 } 56 57 @Override 58 public String toString() { 59 return "Task.Key: " + id + ", " + intent.getComponent().getPackageName(); 60 } 61 } 62 63 public TaskKey key; 64 public String title; 65 public Drawable icon; 66 public Bitmap thumbnail; 67 68 TaskCallbacks mCb; 69 70 public Task(int id, Intent intent, String activityTitle, Drawable icon) { 71 this(id, intent, activityTitle, icon, null); 72 } 73 74 public Task(int id, Intent intent, String activityTitle, Drawable icon, Bitmap thumbnail) { 75 this.key = new TaskKey(id, intent); 76 this.title = activityTitle; 77 this.icon = icon; 78 this.thumbnail = thumbnail; 79 } 80 81 /** Set the callbacks */ 82 public void setCallbacks(TaskCallbacks cb) { 83 mCb = cb; 84 } 85 86 /** Notifies the callback listeners that this task has been loaded */ 87 public void notifyTaskDataLoaded(Bitmap thumbnail, Drawable icon, boolean reloadingTaskData) { 88 this.icon = icon; 89 this.thumbnail = thumbnail; 90 if (mCb != null) { 91 mCb.onTaskDataLoaded(reloadingTaskData); 92 } 93 } 94 95 /** Notifies the callback listeners that this task has been unloaded */ 96 public void notifyTaskDataUnloaded(Bitmap defaultThumbnail, Drawable defaultIcon) { 97 icon = defaultIcon; 98 thumbnail = defaultThumbnail; 99 if (mCb != null) { 100 mCb.onTaskDataUnloaded(); 101 } 102 } 103 104 @Override 105 public boolean equals(Object o) { 106 // If we have multiple task entries for the same task, then we do the simple object 107 // equality check 108 if (Constants.Values.RecentsTaskLoader.TaskEntryMultiplier > 1) { 109 return super.equals(o); 110 } 111 112 // Otherwise, check that the id and intent match (the other fields can be asynchronously 113 // loaded and is unsuitable to testing the identity of this Task) 114 Task t = (Task) o; 115 return key.equals(t.key); 116 } 117 118 @Override 119 public String toString() { 120 return "Task: " + key.intent.getComponent().getPackageName() + " [" + super.toString() + "]"; 121 } 122} 123