1 /*
2  * Copyright (C) 2008 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 android.view.cts;
18 
19 import android.app.Activity;
20 import android.os.Bundle;
21 import android.os.SystemClock;
22 import android.util.Log;
23 import android.view.cts.R;
24 
25 public class ViewTestCtsActivity extends Activity {
26     private boolean mHasWindowFocus = false;
27     private Object mHasWindowFocusLock = new Object();
28 
29     @Override
onCreate(Bundle icicle)30     protected void onCreate(Bundle icicle) {
31         super.onCreate(icicle);
32         setContentView(R.layout.view_layout);
33     }
34 
35     @Override
onWindowFocusChanged(boolean hasFocus)36     public void onWindowFocusChanged(boolean hasFocus) {
37         super.onWindowFocusChanged(hasFocus);
38         if (!hasFocus) {
39             Log.w("ViewTestCtsActivity", "ViewTestCtsActivity lost window focus");
40         }
41         synchronized(mHasWindowFocusLock) {
42             mHasWindowFocus = hasFocus;
43             mHasWindowFocusLock.notify();
44         }
45     }
46 
47     /**
48      * Blocks the calling thread until the {@link ViewTestCtsActivity} has window focus or the
49      * specified duration (in milliseconds) has passed.
50      */
waitForWindowFocus(long durationMillis)51     public boolean waitForWindowFocus(long durationMillis) {
52         long elapsedMillis = SystemClock.elapsedRealtime();
53         synchronized(mHasWindowFocusLock) {
54             mHasWindowFocus = hasWindowFocus();
55             while (!mHasWindowFocus && durationMillis > 0) {
56                 long newElapsedMillis = SystemClock.elapsedRealtime();
57                 durationMillis -= (newElapsedMillis - elapsedMillis);
58                 elapsedMillis = newElapsedMillis;
59                 if (durationMillis > 0) {
60                     try {
61                         mHasWindowFocusLock.wait(durationMillis);
62                     } catch (InterruptedException e) {
63                     }
64                 }
65             }
66             return mHasWindowFocus;
67         }
68     }
69 }
70