1 /*
2  * Copyright (C) 2013 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.terminal;
18 
19 import android.app.Service;
20 import android.content.Intent;
21 import android.os.Binder;
22 import android.os.IBinder;
23 import android.util.SparseArray;
24 
25 /**
26  * Background service that keeps {@link Terminal} instances running and warm
27  * when UI isn't present.
28  */
29 public class TerminalService extends Service {
30     private final SparseArray<Terminal> mTerminals = new SparseArray<Terminal>();
31 
32     public class ServiceBinder extends Binder {
getService()33         public TerminalService getService() {
34             return TerminalService.this;
35         }
36     }
37 
38     @Override
onBind(Intent intent)39     public IBinder onBind(Intent intent) {
40         return new ServiceBinder();
41     }
42 
getTerminals()43     public SparseArray<Terminal> getTerminals() {
44         return mTerminals;
45     }
46 
createTerminal()47     public int createTerminal() {
48         // If our first terminal, start ourselves as long-lived service
49         if (mTerminals.size() == 0) {
50             startService(new Intent(this, TerminalService.class));
51         }
52 
53         final Terminal term = new Terminal();
54         term.start();
55         mTerminals.put(term.key, term);
56         return term.key;
57     }
58 
destroyTerminal(int key)59     public void destroyTerminal(int key) {
60         final Terminal term = mTerminals.get(key);
61         term.destroy();
62         mTerminals.delete(key);
63 
64         // If our last terminal, tear down long-lived service
65         if (mTerminals.size() == 0) {
66             stopService(new Intent(this, TerminalService.class));
67         }
68     }
69 }
70