1 /* 2 * Copyright (C) 2024 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.service.dreams.utils; 18 19 import android.annotation.NonNull; 20 import android.content.Context; 21 import android.os.Bundle; 22 import android.view.View; 23 import android.view.accessibility.AccessibilityNodeInfo; 24 25 import com.android.internal.R; 26 27 /** 28 * {@link DreamAccessibility} allows customization of accessibility 29 * actions for the root view of the dream overlay. 30 * @hide 31 */ 32 public class DreamAccessibility { 33 private final Context mContext; 34 private final View mView; 35 private final View.AccessibilityDelegate mAccessibilityDelegate; 36 private final Runnable mDismissCallback; 37 DreamAccessibility(@onNull Context context, @NonNull View view, @NonNull Runnable dismissCallback)38 public DreamAccessibility(@NonNull Context context, @NonNull View view, 39 @NonNull Runnable dismissCallback) { 40 mContext = context; 41 mView = view; 42 mAccessibilityDelegate = createNewAccessibilityDelegate(mContext); 43 mDismissCallback = dismissCallback; 44 } 45 46 /** 47 * Adds default accessibility configuration if none exist on the dream 48 */ updateAccessibilityConfiguration()49 public void updateAccessibilityConfiguration() { 50 if (mView.getAccessibilityDelegate() == null) { 51 addAccessibilityConfiguration(); 52 } 53 } 54 55 /** 56 * Configures the accessibility actions for the given root view. 57 */ addAccessibilityConfiguration()58 private void addAccessibilityConfiguration() { 59 mView.setAccessibilityDelegate(mAccessibilityDelegate); 60 } 61 createNewAccessibilityDelegate(Context context)62 private View.AccessibilityDelegate createNewAccessibilityDelegate(Context context) { 63 return new View.AccessibilityDelegate() { 64 @Override 65 public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) { 66 super.onInitializeAccessibilityNodeInfo(host, info); 67 info.addAction(new AccessibilityNodeInfo.AccessibilityAction( 68 AccessibilityNodeInfo.ACTION_DISMISS, 69 context.getResources().getString(R.string.dream_accessibility_action_click) 70 )); 71 } 72 73 @Override 74 public boolean performAccessibilityAction(View host, int action, Bundle args) { 75 switch(action){ 76 case AccessibilityNodeInfo.ACTION_DISMISS: 77 if (mDismissCallback != null) { 78 mDismissCallback.run(); 79 } 80 break; 81 } 82 return true; 83 } 84 }; 85 } 86 } 87