Task.java revision 4f0a49e6b9ad1b00972dbe8a751263aa6c482538 
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;
22
23
24/**
25 * A task represents the top most task in the system's task stack.
26 */
27public class Task {
28    /* Task callbacks */
29    public interface TaskCallbacks {
30        /* Notifies when a task has been bound */
31        public void onTaskDataLoaded(boolean reloadingTaskData);
32        /* Notifies when a task has been unbound */
33        public void onTaskDataUnloaded();
34    }
35
36    /* The Task Key represents the unique primary key for the task */
37    public static class TaskKey {
38        public final int id;
39        public final Intent baseIntent;
40        public final int userId;
41
42        public TaskKey(int id, Intent intent, int userId) {
43            this.id = id;
44            this.baseIntent = intent;
45            this.userId = userId;
46        }
47
48        @Override
49        public boolean equals(Object o) {
50            if (!(o instanceof TaskKey)) {
51                return false;
52            }
53            return id == ((TaskKey) o).id
54                    && userId == ((TaskKey) o).userId;
55        }
56
57        @Override
58        public int hashCode() {
59            return (id << 5) + userId;
60        }
61
62        @Override
63        public String toString() {
64            return "Task.Key: " + id + ", "
65                    + "u" + userId + ", "
66                    + baseIntent.getComponent().getPackageName();
67        }
68    }
69
70    public TaskKey key;
71    public Drawable applicationIcon;
72    public String activityLabel;
73    public Bitmap activityIcon;
74    public Bitmap thumbnail;
75    public boolean isActive;
76    public int userId;
77
78    TaskCallbacks mCb;
79
80    public Task(int id, boolean isActive, Intent intent, String activityTitle,
81                Bitmap activityIcon, int userId) {
82        this.key = new TaskKey(id, intent, userId);
83        this.activityLabel = activityTitle;
84        this.activityIcon = activityIcon;
85        this.isActive = isActive;
86        this.userId = userId;
87    }
88
89    /** Set the callbacks */
90    public void setCallbacks(TaskCallbacks cb) {
91        mCb = cb;
92    }
93
94    /** Notifies the callback listeners that this task has been loaded */
95    public void notifyTaskDataLoaded(Bitmap thumbnail, Drawable applicationIcon,
96                                     boolean reloadingTaskData) {
97        this.applicationIcon = applicationIcon;
98        this.thumbnail = thumbnail;
99        if (mCb != null) {
100            mCb.onTaskDataLoaded(reloadingTaskData);
101        }
102    }
103
104    /** Notifies the callback listeners that this task has been unloaded */
105    public void notifyTaskDataUnloaded(Bitmap defaultThumbnail, Drawable defaultApplicationIcon) {
106        applicationIcon = defaultApplicationIcon;
107        thumbnail = defaultThumbnail;
108        if (mCb != null) {
109            mCb.onTaskDataUnloaded();
110        }
111    }
112
113    @Override
114    public boolean equals(Object o) {
115        // Check that the id matches
116        Task t = (Task) o;
117        return key.equals(t.key);
118    }
119
120    @Override
121    public String toString() {
122        return "Task: " + key.baseIntent.getComponent().getPackageName() + " [" + super.toString() + "]";
123    }
124}
125