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      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 
     17 package android.support.v7.widget;
     18 
     19 import android.app.Activity;
     20 import android.os.Bundle;
     21 import android.os.Handler;
     22 import android.os.Looper;
     23 import android.support.test.runner.MonitoringInstrumentation;
     24 import android.view.WindowManager;
     25 
     26 import java.util.concurrent.CountDownLatch;
     27 import java.util.concurrent.TimeUnit;
     28 
     29 public class TestActivity extends Activity {
     30     // This is not great but the only way to do this until test runner adds support to not kill
     31     // activities after tests.
     32     private static final String TEST_RUNNER =
     33             MonitoringInstrumentation.class.getCanonicalName() + "$" + MonitoringInstrumentation
     34                     .ActivityFinisher.class.getSimpleName();
     35     private volatile TestedFrameLayout mContainer;
     36     boolean mVisible;
     37     boolean mAllowFinish;
     38     private Handler mHandler;
     39 
     40     @Override
     41     protected void onCreate(Bundle savedInstanceState) {
     42         super.onCreate(savedInstanceState);
     43         overridePendingTransition(0, 0);
     44 
     45         mContainer = new TestedFrameLayout(this);
     46         mHandler = new Handler(Looper.getMainLooper());
     47 
     48         getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
     49         getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
     50         setContentView(mContainer);
     51         getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
     52     }
     53 
     54     public TestedFrameLayout getContainer() {
     55         return mContainer;
     56     }
     57 
     58     public void resetContent() throws InterruptedException {
     59         final CountDownLatch done = new CountDownLatch(1);
     60         mHandler.post(new Runnable() {
     61             @Override
     62             public void run() {
     63                 mContainer = new TestedFrameLayout(TestActivity.this);
     64                 setContentView(mContainer);
     65                 done.countDown();
     66             }
     67         });
     68         if (!done.await(5, TimeUnit.SECONDS)) {
     69             throw new AssertionError("could not cleanup activity contents in 5 seconds");
     70         }
     71     }
     72 
     73     @Override
     74     protected void onPause() {
     75         super.onPause();
     76         mVisible = false;
     77     }
     78 
     79     @Override
     80     public void onResume() {
     81         super.onResume();
     82         mVisible = true;
     83     }
     84 
     85     @Override
     86     public void finish() {
     87         if (!mAllowFinish) {
     88             StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
     89             // this is terrible but easy workaround for selective finishing
     90             for (StackTraceElement element : stackTrace) {
     91 
     92                 if (TEST_RUNNER.equals(element.getClassName())) {
     93                     // don't allow activity finisher to finish this.
     94                     return;
     95                 }
     96             }
     97         }
     98         super.finish();
     99     }
    100 
    101     public void setAllowFinish(boolean allowFinish) {
    102         mAllowFinish = allowFinish;
    103     }
    104 
    105     public boolean canBeReUsed() {
    106         return getWindow() != null && mVisible && !mAllowFinish;
    107     }
    108 }
    109