1 /*
2  * Copyright (C) 2017 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.keyguard;
18 
19 import android.content.Context;
20 import android.text.TextUtils;
21 import android.view.View;
22 import android.view.accessibility.AccessibilityEvent;
23 import android.view.accessibility.AccessibilityNodeInfo;
24 import android.widget.TextView;
25 
26 /**
27  * Replaces fancy colons with regular colons. Only works on TextViews.
28  */
29 class KeyguardClockAccessibilityDelegate extends View.AccessibilityDelegate {
30     private final String mFancyColon;
31 
KeyguardClockAccessibilityDelegate(Context context)32     public KeyguardClockAccessibilityDelegate(Context context) {
33         mFancyColon = context.getString(R.string.keyguard_fancy_colon);
34     }
35 
36     @Override
onInitializeAccessibilityEvent(View host, AccessibilityEvent event)37     public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
38         super.onInitializeAccessibilityEvent(host, event);
39         CharSequence text = event.getContentDescription();
40         if (!TextUtils.isEmpty(text)) {
41             event.setContentDescription(replaceFancyColon(text));
42         }
43     }
44 
45     @Override
onPopulateAccessibilityEvent(View host, AccessibilityEvent event)46     public void onPopulateAccessibilityEvent(View host, AccessibilityEvent event) {
47         CharSequence text = ((TextView) host).getText();
48         if (!TextUtils.isEmpty(text)) {
49             event.getText().add(replaceFancyColon(text));
50         }
51     }
52 
53     @Override
onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info)54     public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
55         super.onInitializeAccessibilityNodeInfo(host, info);
56         if (!TextUtils.isEmpty(info.getText())) {
57             info.setText(replaceFancyColon(info.getText()));
58         }
59         if (!TextUtils.isEmpty(info.getContentDescription())) {
60             info.setContentDescription(replaceFancyColon(info.getContentDescription()));
61         }
62     }
63 
replaceFancyColon(CharSequence text)64     private CharSequence replaceFancyColon(CharSequence text) {
65         return text.toString().replace(mFancyColon, ":");
66     }
67 }
68