/
SearchInPlaceTrait.kt
82 lines (73 loc) · 2.66 KB
/
SearchInPlaceTrait.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.traits
import android.os.Handler
import android.os.Looper
import android.text.Editable
import android.text.TextWatcher
import android.widget.EditText
import com.vanniktech.emoji.EmojiPopup
import com.vanniktech.emoji.internal.EmojiSearchPopup
import com.vanniktech.emoji.search.NoSearchEmoji
/**
* Popup similar to how Telegram and Slack does it to search for an Emoji
*/
class SearchInPlaceTrait(
private val emojiPopup: EmojiPopup,
) : EmojiTraitable {
override fun install(editText: EditText): EmojiTrait {
if (emojiPopup.searchEmoji is NoSearchEmoji) {
return EmptyEmojiTrait
}
val popup = EmojiSearchPopup(emojiPopup.rootView, editText, emojiPopup.theming)
val handler = Handler(Looper.getMainLooper())
val watcher = object : TextWatcher {
override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) = Unit
override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) = Unit
override fun afterTextChanged(s: Editable) {
handler.removeCallbacksAndMessages(null)
// Cheap debounce without RxJava.
handler.postDelayed({
val lastColon = s.indexOfLast { it == ':' }
if (lastColon >= 0) {
val query = s.drop(lastColon + 1).toString()
val isProperQuery = query.all { it.isLetterOrDigit() || it == '_' }
if (isProperQuery) {
popup.show(
emojis = emojiPopup.searchEmoji.search(query),
delegate = {
val new = "${it.unicode} "
editText.text.replace(lastColon, s.length, new, 0, new.length)
},
)
} else {
popup.dismiss()
}
} else {
popup.dismiss()
}
}, 300L)
}
}
editText.addTextChangedListener(watcher)
return object : EmojiTrait {
override fun uninstall() {
popup.dismiss()
editText.removeTextChangedListener(watcher)
}
}
}
}