EmojiTextView.java revision f8ec169d022fbed42fd82091d24c45f3767cdfe7 
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 */
16package android.support.text.emoji.widget;
17
18import android.content.Context;
19import android.os.Build;
20import android.support.annotation.RequiresApi;
21import android.text.InputFilter;
22import android.util.AttributeSet;
23import android.widget.TextView;
24
25/**
26 * TextView widget enhanced with emoji capability by using {@link EmojiTextViewHelper}.
27 */
28public class EmojiTextView extends TextView {
29    private EmojiTextViewHelper mEmojiTextViewHelper;
30    private boolean mInitialized;
31
32    public EmojiTextView(Context context) {
33        super(context);
34        init();
35    }
36
37    public EmojiTextView(Context context, AttributeSet attrs) {
38        super(context, attrs);
39        init();
40    }
41
42    public EmojiTextView(Context context, AttributeSet attrs, int defStyleAttr) {
43        super(context, attrs, defStyleAttr);
44        init();
45    }
46
47    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
48    public EmojiTextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
49        super(context, attrs, defStyleAttr, defStyleRes);
50        init();
51    }
52
53    private void init() {
54        if (!mInitialized) {
55            mInitialized = true;
56            getEmojiTextViewHelper().updateTransformationMethod();
57        }
58    }
59
60    @Override
61    public void setFilters(InputFilter[] filters) {
62        super.setFilters(getEmojiTextViewHelper().getFilters(filters));
63    }
64
65    @Override
66    public void setAllCaps(boolean allCaps) {
67        super.setAllCaps(allCaps);
68        getEmojiTextViewHelper().setAllCaps(allCaps);
69    }
70
71    private EmojiTextViewHelper getEmojiTextViewHelper() {
72        if (mEmojiTextViewHelper == null) {
73            mEmojiTextViewHelper = new EmojiTextViewHelper(this);
74        }
75        return mEmojiTextViewHelper;
76    }
77}
78