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CustomTextView.kt
/* * Copyright (C) 2017 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.example.android.emojicompat import android.content.Context import android.support.text.emoji.widget.EmojiTextViewHelper import android.support.v7.widget.AppCompatTextView import android.text.InputFilter import android.util.AttributeSet /** * A sample implementation of custom TextView. * * You can use [EmojiTextViewHelper] to make your custom TextView compatible with * EmojiCompat. */ class CustomTextView @JvmOverloads constructor( context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) : AppCompatTextView(context, attrs, defStyleAttr) { private var mEmojiTextViewHelper: EmojiTextViewHelper? = null /** * Returns the [EmojiTextViewHelper] for this TextView. * * This property can be called from super constructors through [#setFilters] or [#setAllCaps]. */ private val emojiTextViewHelper: EmojiTextViewHelper get() { if (mEmojiTextViewHelper == null) { mEmojiTextViewHelper = EmojiTextViewHelper(this) } return mEmojiTextViewHelper as EmojiTextViewHelper } init { emojiTextViewHelper.updateTransformationMethod() } override fun setFilters(filters: Array
) { super.setFilters(emojiTextViewHelper.getFilters(filters)) } override fun setAllCaps(allCaps: Boolean) { super.setAllCaps(allCaps) emojiTextViewHelper.setAllCaps(allCaps) } }