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EmojiView.kt
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EmojiView.kt
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/*
* Copyright (C) 2016 - Niklas Baudy, Ruben Gees, Mario Đanić and contributors
*
* 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.vanniktech.emoji
import android.content.Context
import android.graphics.PorterDuff
import android.util.AttributeSet
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.EditText
import android.widget.ImageButton
import android.widget.LinearLayout
import androidx.annotation.DrawableRes
import androidx.appcompat.content.res.AppCompatResources
import androidx.viewpager.widget.ViewPager
import androidx.viewpager.widget.ViewPager.OnPageChangeListener
import com.vanniktech.emoji.internal.EmojiImageView
import com.vanniktech.emoji.internal.EmojiPagerAdapter
import com.vanniktech.emoji.internal.EmojiPagerDelegate
import com.vanniktech.emoji.internal.EmojiSearchDialog
import com.vanniktech.emoji.internal.EmojiVariantPopup
import com.vanniktech.emoji.internal.RepeatListener
import com.vanniktech.emoji.internal.emojiDrawableProvider
import com.vanniktech.emoji.internal.hideKeyboardAndFocus
import com.vanniktech.emoji.internal.showKeyboardAndFocus
import com.vanniktech.emoji.listeners.OnEmojiBackspaceClickListener
import com.vanniktech.emoji.listeners.OnEmojiClickListener
import com.vanniktech.emoji.recent.RecentEmoji
import com.vanniktech.emoji.recent.RecentEmojiManager
import com.vanniktech.emoji.search.NoSearchEmoji
import com.vanniktech.emoji.search.SearchEmoji
import com.vanniktech.emoji.search.SearchEmojiManager
import com.vanniktech.emoji.variant.VariantEmoji
import com.vanniktech.emoji.variant.VariantEmojiManager
import com.vanniktech.ui.Color
import com.vanniktech.ui.themeViewPager
import java.util.concurrent.Executors
import java.util.concurrent.TimeUnit
class EmojiView @JvmOverloads constructor(
context: Context,
attrs: AttributeSet? = null,
) : LinearLayout(context, attrs) {
private var emojiTabs = arrayOfNulls<ImageButton>(0)
private lateinit var theming: EmojiTheming
private lateinit var emojiPagerAdapter: EmojiPagerAdapter
private var editText: EditText? = null
private var onEmojiClickListener: OnEmojiClickListener? = null
private var onEmojiBackspaceClickListener: OnEmojiBackspaceClickListener? = null
private var emojiTabLastSelectedIndex = -1
private lateinit var variantPopup: EmojiVariantPopup
private lateinit var recentEmoji: RecentEmoji
private lateinit var searchEmoji: SearchEmoji
private lateinit var variantEmoji: VariantEmoji
init {
inflate(context, R.layout.emoji_view, this)
orientation = VERTICAL
}
/**
* Call this method to set up the EmojiView.
* Once you're done with it, please call [.tearDown].
*/
@JvmOverloads fun setUp(
rootView: View,
onEmojiClickListener: OnEmojiClickListener?,
onEmojiBackspaceClickListener: OnEmojiBackspaceClickListener?,
editText: EditText?,
theming: EmojiTheming = EmojiTheming.from(rootView.context),
recentEmoji: RecentEmoji = RecentEmojiManager(rootView.context),
searchEmoji: SearchEmoji = SearchEmojiManager(),
variantEmoji: VariantEmoji = VariantEmojiManager(rootView.context),
pageTransformer: ViewPager.PageTransformer? = null,
) {
val context = context
this.editText = editText
this.theming = theming
this.recentEmoji = recentEmoji
this.searchEmoji = searchEmoji
this.variantEmoji = variantEmoji
this.onEmojiBackspaceClickListener = onEmojiBackspaceClickListener
this.onEmojiClickListener = onEmojiClickListener
variantPopup = EmojiVariantPopup(rootView) { emojiImageView: EmojiImageView, emoji: Emoji ->
handleEmojiClick(emoji)
emojiImageView.updateEmoji(emoji) // To reflect new variant in the UI.
dismissVariantPopup()
}
setBackgroundColor(theming.backgroundColor)
val emojisPager: ViewPager = findViewById(R.id.emojiViewPager)
emojisPager.themeViewPager(color = Color(theming.secondaryColor))
val emojiDivider = findViewById<View>(R.id.emojiViewDivider)
emojiDivider.setBackgroundColor(theming.dividerColor)
if (pageTransformer != null) {
emojisPager.setPageTransformer(true, pageTransformer)
}
emojisPager.addOnPageChangeListener(
object : OnPageChangeListener {
override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) = Unit
override fun onPageScrollStateChanged(position: Int) = Unit
override fun onPageSelected(position: Int) = selectPage(position)
},
)
handleEmojiTabs(context, emojisPager)
emojisPager.adapter = emojiPagerAdapter
val startIndex = if (emojiPagerAdapter.hasRecentEmoji()) if (emojiPagerAdapter.numberOfRecentEmojis() > 0) 0 else 1 else 0
emojisPager.currentItem = startIndex
selectPage(startIndex)
}
internal fun selectPage(index: Int) {
if (emojiTabLastSelectedIndex != index) {
if (index == 0) {
emojiPagerAdapter.invalidateRecentEmojis()
}
if (emojiTabLastSelectedIndex >= 0 && emojiTabLastSelectedIndex < emojiTabs.size) {
emojiTabs[emojiTabLastSelectedIndex]!!.isSelected = false
emojiTabs[emojiTabLastSelectedIndex]!!.setColorFilter(theming.primaryColor, PorterDuff.Mode.SRC_IN)
}
emojiTabs[index]?.isSelected = true
emojiTabs[index]?.setColorFilter(theming.secondaryColor, PorterDuff.Mode.SRC_IN)
emojiTabLastSelectedIndex = index
}
}
private fun handleEmojiTabs(
context: Context,
emojisPager: ViewPager,
) {
val categories = EmojiManager.categories()
val emojisTab = findViewById<LinearLayout>(R.id.emojiViewTab)
emojiPagerAdapter = EmojiPagerAdapter(
object : EmojiPagerDelegate {
override fun onEmojiClick(emoji: Emoji) = handleEmojiClick(emoji)
override fun onEmojiLongClick(view: EmojiImageView, emoji: Emoji, variants: List<Emoji>) {
variantPopup.show(view, emoji, variants)
}
},
recentEmoji,
variantEmoji,
theming,
)
val hasBackspace = editText != null || onEmojiBackspaceClickListener != null
val hasSearch = searchEmoji !is NoSearchEmoji
val endIndexes = (if (hasSearch) 1 else 0) + if (hasBackspace) 1 else 0
val recentAdapterItemCount = emojiPagerAdapter.recentAdapterItemCount()
emojiTabs = arrayOfNulls(recentAdapterItemCount + categories.size + endIndexes)
if (emojiPagerAdapter.hasRecentEmoji()) {
emojiTabs[0] = inflateButton(context, R.drawable.emoji_recent, context.getString(R.string.emoji_category_recent), emojisTab)
}
val searchIndex = if (hasSearch) emojiTabs.size - (if (hasBackspace) 2 else 1) else null
val backspaceIndex = if (hasBackspace) emojiTabs.size - 1 else null
val languageCode = context.getString(R.string.emoji_language_code)
val emojiDrawableProvider = EmojiManager.emojiDrawableProvider()
for (i in categories.indices) {
val emojiCategory = categories[i]
val categoryName = emojiCategory.categoryNames[languageCode].orEmpty()
val categoryIcon = emojiDrawableProvider.getIcon(emojiCategory)
emojiTabs[i + recentAdapterItemCount] = inflateButton(context, categoryIcon, categoryName, emojisTab)
}
if (searchIndex != null) {
emojiTabs[searchIndex] = inflateButton(context, R.drawable.emoji_search, context.getString(R.string.emoji_search), emojisTab)
emojiTabs[searchIndex]!!.setOnClickListener {
editText?.hideKeyboardAndFocus()
EmojiSearchDialog.show(
getContext(),
{
handleEmojiClick(it, addWhitespace = true)
editText?.showKeyboardAndFocus()
// Maybe the search was opened from the recent tab and hence we'll invalidate.
emojiPagerAdapter.invalidateRecentEmojis()
},
searchEmoji,
theming,
)
}
}
if (backspaceIndex != null) {
emojiTabs[backspaceIndex] = inflateButton(context, R.drawable.emoji_backspace, context.getString(R.string.emoji_backspace), emojisTab)
//noinspection AndroidLintClickableViewAccessibility
emojiTabs[backspaceIndex]?.setOnTouchListener(
RepeatListener(INITIAL_INTERVAL, NORMAL_INTERVAL.toLong()) {
editText?.backspace()
onEmojiBackspaceClickListener?.onEmojiBackspaceClick()
},
)
}
for (i in 0 until emojiTabs.size - endIndexes) {
emojiTabs[i]?.setOnClickListener(EmojiTabsClickListener(emojisPager, i))
}
}
private fun inflateButton(
context: Context,
@DrawableRes icon: Int,
categoryName: String,
parent: ViewGroup,
): ImageButton {
val button = LayoutInflater.from(context).inflate(R.layout.emoji_view_category, parent, false) as ImageButton
button.setImageDrawable(AppCompatResources.getDrawable(context, icon))
button.setColorFilter(theming.primaryColor, PorterDuff.Mode.SRC_IN)
button.contentDescription = categoryName
parent.addView(button)
return button
}
internal fun handleEmojiClick(emoji: Emoji, addWhitespace: Boolean = false) {
editText?.input(emoji, addWhitespace)
recentEmoji.addEmoji(emoji)
variantEmoji.addVariant(emoji)
onEmojiClickListener?.onEmojiClick(emoji)
}
/**
* Counterpart of [setUp]
*/
fun tearDown() {
dismissVariantPopup()
Executors.newSingleThreadExecutor().submit {
recentEmoji.persist()
variantEmoji.persist()
}
}
private fun dismissVariantPopup() = variantPopup.dismiss()
internal class EmojiTabsClickListener(
private val emojisPager: ViewPager,
private val position: Int,
) : OnClickListener {
override fun onClick(v: View) {
emojisPager.currentItem = position
}
}
internal companion object {
private val INITIAL_INTERVAL = TimeUnit.SECONDS.toMillis(1) / 2
private const val NORMAL_INTERVAL = 50
}
}