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      1 /*
      2  * Copyright (C) 2018 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.accessibilityservice.cts;
     18 
     19 import static org.junit.Assert.assertTrue;
     20 
     21 import android.accessibilityservice.AccessibilityServiceInfo;
     22 import android.accessibilityservice.cts.utils.AsyncUtils;
     23 import android.app.Instrumentation;
     24 import android.app.UiAutomation;
     25 import android.os.Debug;
     26 import android.support.test.InstrumentationRegistry;
     27 import android.support.test.runner.AndroidJUnit4;
     28 import android.text.TextUtils;
     29 import android.view.WindowManager;
     30 import android.view.accessibility.AccessibilityNodeInfo;
     31 import android.view.accessibility.AccessibilityWindowInfo;
     32 import android.widget.Button;
     33 
     34 import org.junit.After;
     35 import org.junit.Before;
     36 import org.junit.BeforeClass;
     37 import org.junit.Test;
     38 import org.junit.runner.RunWith;
     39 
     40 import java.util.List;
     41 
     42 // Test that an AccessibilityService can display an accessibility overlay
     43 @RunWith(AndroidJUnit4.class)
     44 public class AccessibilityOverlayTest {
     45 
     46     private static Instrumentation sInstrumentation;
     47     private static UiAutomation sUiAutomation;
     48     InstrumentedAccessibilityService mService;
     49 
     50     @BeforeClass
     51     public static void oneTimeSetUp() {
     52         sInstrumentation = InstrumentationRegistry.getInstrumentation();
     53         sUiAutomation = sInstrumentation
     54                 .getUiAutomation(UiAutomation.FLAG_DONT_SUPPRESS_ACCESSIBILITY_SERVICES);
     55         AccessibilityServiceInfo info = sUiAutomation.getServiceInfo();
     56         info.flags |= AccessibilityServiceInfo.FLAG_RETRIEVE_INTERACTIVE_WINDOWS;
     57         sUiAutomation.setServiceInfo(info);
     58     }
     59 
     60     @Before
     61     public void setUp() {
     62         mService = StubAccessibilityButtonService.enableSelf(sInstrumentation);
     63     }
     64 
     65     @After
     66     public void tearDown() {
     67         mService.runOnServiceSync(() -> mService.disableSelf());
     68     }
     69 
     70     @Test
     71     public void testA11yServiceShowsOverlay_shouldAppear() throws Exception {
     72         final Button button = new Button(mService);
     73         button.setText("Button");
     74         final String overlayTitle = "Overlay title";
     75 
     76         sUiAutomation.executeAndWaitForEvent(() -> mService.runOnServiceSync(() -> {
     77             final WindowManager.LayoutParams params = new WindowManager.LayoutParams();
     78             params.width = WindowManager.LayoutParams.MATCH_PARENT;
     79             params.height = WindowManager.LayoutParams.MATCH_PARENT;
     80             params.flags = WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
     81                     | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR;
     82             params.type = WindowManager.LayoutParams.TYPE_ACCESSIBILITY_OVERLAY;
     83             params.setTitle(overlayTitle);
     84             mService.getSystemService(WindowManager.class).addView(button, params);
     85         }), (event) -> findOverlayWindow() != null, AsyncUtils.DEFAULT_TIMEOUT_MS);
     86 
     87         assertTrue(TextUtils.equals(findOverlayWindow().getTitle(), overlayTitle));
     88     }
     89 
     90     private AccessibilityWindowInfo findOverlayWindow() {
     91         List<AccessibilityWindowInfo> windows = sUiAutomation.getWindows();
     92         for (int i = 0; i < windows.size(); i++) {
     93             AccessibilityWindowInfo window = windows.get(i);
     94             if (window.getType() == AccessibilityWindowInfo.TYPE_ACCESSIBILITY_OVERLAY) {
     95                 return window;
     96             }
     97         }
     98         return null;
     99     }
    100 }
    101