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      1 /*
      2  * Copyright (C) 2015 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.widget;
     18 
     19 import com.android.frameworks.coretests.R;
     20 
     21 import android.app.Activity;
     22 import android.os.Bundle;
     23 import android.os.SystemClock;
     24 import android.util.Log;
     25 
     26 /**
     27  * An activity for testing the TextView widget.
     28  *
     29  * This class is copied from {@link android.text.method.cts.KeyListenerCtsActivity} in
     30  * CtsTextTestCase.  The original class is located at
     31  * cts/tests/tests/text/src/android/text/method/cts/KeyListenerCtsActivity.java
     32  */
     33 public class TextViewActivity extends Activity {
     34     private boolean mHasWindowFocus = false;
     35     private Object mHasWindowFocusLock = new Object();
     36 
     37     @Override
     38     protected void onCreate(Bundle savedInstanceState) {
     39         super.onCreate(savedInstanceState);
     40         setContentView(R.layout.activity_text_view);
     41     }
     42 
     43     @Override
     44     public void onWindowFocusChanged(boolean hasFocus) {
     45         super.onWindowFocusChanged(hasFocus);
     46         if (!hasFocus) {
     47             Log.w("TextViewActivity", "TextViewActivity lost window focus");
     48         }
     49         synchronized(mHasWindowFocusLock) {
     50             mHasWindowFocus = hasFocus;
     51             mHasWindowFocusLock.notify();
     52         }
     53     }
     54 
     55     /**
     56      * Blocks the calling thread until the {@link KeyListenerCtsActivity} has window focus or the
     57      * specified duration (in milliseconds) has passed.
     58      */
     59     public boolean waitForWindowFocus(long durationMillis) {
     60         long elapsedMillis = SystemClock.elapsedRealtime();
     61         synchronized(mHasWindowFocusLock) {
     62             mHasWindowFocus = hasWindowFocus();
     63             while (!mHasWindowFocus && durationMillis > 0) {
     64                 long newElapsedMillis = SystemClock.elapsedRealtime();
     65                 durationMillis -= (newElapsedMillis - elapsedMillis);
     66                 elapsedMillis = newElapsedMillis;
     67                 if (durationMillis > 0) {
     68                     try {
     69                         mHasWindowFocusLock.wait(durationMillis);
     70                     } catch (InterruptedException e) {
     71                     }
     72                 }
     73             }
     74             return mHasWindowFocus;
     75         }
     76     }
     77 }
     78