1 /*
2  * Copyright (C) 2019 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.inputmethod.leanback;
18 
19 import android.os.Handler;
20 import android.view.View;
21 import android.view.accessibility.AccessibilityEvent;
22 import android.view.inputmethod.EditorInfo;
23 
24 /**
25  * This class contains common methods used by LeanbackImeService classes
26  */
27 public class LeanbackUtils {
28 
29     private static final int ACCESSIBILITY_DELAY_MS = 250;
30     private static final Handler sAccessibilityHandler = new Handler();
31 
32     /**
33      * checks if the keyCode represents an alphabet char
34      *
35      * @return true if the keyCode represents an alphabet char
36      */
isAlphabet(int keyCode)37     public static boolean isAlphabet(int keyCode) {
38         if (Character.isLetter(keyCode)) {
39             return true;
40         } else {
41             return false;
42         }
43     }
44 
45     /**
46      * get the IME action of the current {@link EditText}
47      */
getImeAction(EditorInfo attribute)48     public static int getImeAction(EditorInfo attribute) {
49         return attribute.imeOptions
50                 & (EditorInfo.IME_MASK_ACTION | EditorInfo.IME_FLAG_NO_ENTER_ACTION);
51     }
52 
53     /**
54      * get the input type class of the current {@link EditText}
55      */
getInputTypeClass(EditorInfo attribute)56     public static int getInputTypeClass(EditorInfo attribute) {
57         return attribute.inputType & EditorInfo.TYPE_MASK_CLASS;
58     }
59 
60     /**
61      * get the input type variation of the current {@link EditText}
62      */
getInputTypeVariation(EditorInfo attribute)63     public static int getInputTypeVariation(EditorInfo attribute) {
64         return attribute.inputType & EditorInfo.TYPE_MASK_VARIATION;
65     }
66 
sendAccessibilityEvent(final View view, boolean focusGained)67     public static void sendAccessibilityEvent(final View view, boolean focusGained) {
68         if (view != null && focusGained) {
69             sAccessibilityHandler.removeCallbacksAndMessages(null);
70             sAccessibilityHandler.postDelayed(new Runnable() {
71                 public void run() {
72                     view.sendAccessibilityEvent(AccessibilityEvent.TYPE_ANNOUNCEMENT);
73                 }
74             }, ACCESSIBILITY_DELAY_MS);
75         }
76     }
77 }
78