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 package androidx.emoji.widget; 17 18 import android.content.Context; 19 import android.os.Build; 20 import android.text.InputFilter; 21 import android.util.AttributeSet; 22 import android.widget.TextView; 23 24 import androidx.annotation.RequiresApi; 25 26 /** 27 * TextView widget enhanced with emoji capability by using {@link EmojiTextViewHelper}. When used 28 * on devices running API 18 or below, this widget acts as a regular {@link TextView}. 29 */ 30 public class EmojiTextView extends TextView { 31 private EmojiTextViewHelper mEmojiTextViewHelper; 32 33 /** 34 * Prevent calling {@link #init()} multiple times in case super() constructors 35 * call other constructors. 36 */ 37 private boolean mInitialized; 38 39 public EmojiTextView(Context context) { 40 super(context); 41 init(); 42 } 43 44 public EmojiTextView(Context context, AttributeSet attrs) { 45 super(context, attrs); 46 init(); 47 } 48 49 public EmojiTextView(Context context, AttributeSet attrs, int defStyleAttr) { 50 super(context, attrs, defStyleAttr); 51 init(); 52 } 53 54 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) 55 public EmojiTextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 56 super(context, attrs, defStyleAttr, defStyleRes); 57 init(); 58 } 59 60 private void init() { 61 if (!mInitialized) { 62 mInitialized = true; 63 getEmojiTextViewHelper().updateTransformationMethod(); 64 } 65 } 66 67 @Override 68 public void setFilters(InputFilter[] filters) { 69 super.setFilters(getEmojiTextViewHelper().getFilters(filters)); 70 } 71 72 @Override 73 public void setAllCaps(boolean allCaps) { 74 super.setAllCaps(allCaps); 75 getEmojiTextViewHelper().setAllCaps(allCaps); 76 } 77 78 private EmojiTextViewHelper getEmojiTextViewHelper() { 79 if (mEmojiTextViewHelper == null) { 80 mEmojiTextViewHelper = new EmojiTextViewHelper(this); 81 } 82 return mEmojiTextViewHelper; 83 } 84 } 85
