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      1 /*
      2  * Copyright (C) 2012 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 com.android.gallery3d.util;
     18 
     19 import android.content.Context;
     20 import androidx.core.view.accessibility.AccessibilityRecordCompat;
     21 import android.view.View;
     22 import android.view.accessibility.AccessibilityEvent;
     23 import android.view.accessibility.AccessibilityManager;
     24 
     25 import com.android.gallery3d.common.ApiHelper;
     26 
     27 /**
     28  * AccessibilityUtils provides functions needed in accessibility mode. All the functions
     29  * in this class are made compatible with gingerbread and later API's
     30 */
     31 public class AccessibilityUtils {
     32     public static void makeAnnouncement(View view, CharSequence announcement) {
     33         if (view == null)
     34             return;
     35         if (ApiHelper.HAS_ANNOUNCE_FOR_ACCESSIBILITY) {
     36             view.announceForAccessibility(announcement);
     37         } else {
     38             // For API 15 and earlier, we need to construct an accessibility event
     39             Context ctx = view.getContext();
     40             AccessibilityManager am = (AccessibilityManager) ctx.getSystemService(
     41                     Context.ACCESSIBILITY_SERVICE);
     42             if (!am.isEnabled()) return;
     43             AccessibilityEvent event = AccessibilityEvent.obtain(
     44                     AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED);
     45             AccessibilityRecordCompat arc = new AccessibilityRecordCompat(event);
     46             arc.setSource(view);
     47             event.setClassName(view.getClass().getName());
     48             event.setPackageName(view.getContext().getPackageName());
     49             event.setEnabled(view.isEnabled());
     50             event.getText().add(announcement);
     51             am.sendAccessibilityEvent(event);
     52         }
     53     }
     54 }