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emoji_map.js
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emoji_map.js
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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
import * as Emoji from 'utils/emoji.jsx';
// Wrap the contents of the store so that we don't need to construct an ES6 map where most of the content
// (the system emojis) will never change. It provides the get/has functions of a map and an iterator so
// that it can be used in for..of loops
export default class EmojiMap {
constructor(customEmojis) {
this.customEmojis = customEmojis;
// Store customEmojis to an array so we can iterate it more easily
this.customEmojisArray = [...customEmojis];
}
has(name) {
return Emoji.EmojiIndicesByAlias.has(name) || this.customEmojis.has(name);
}
hasSystemEmoji(name) {
return Emoji.EmojiIndicesByAlias.has(name);
}
hasUnicode(codepoint) {
return Emoji.EmojiIndicesByUnicode.has(codepoint);
}
get(name) {
if (Emoji.EmojiIndicesByAlias.has(name)) {
return Emoji.Emojis[Emoji.EmojiIndicesByAlias.get(name)];
}
return this.customEmojis.get(name);
}
getUnicode(codepoint) {
return Emoji.Emojis[Emoji.EmojiIndicesByUnicode.get(codepoint)];
}
[Symbol.iterator]() {
const customEmojisArray = this.customEmojisArray;
return {
systemIndex: 0,
customIndex: 0,
next() {
if (this.systemIndex < Emoji.Emojis.length) {
const emoji = Emoji.Emojis[this.systemIndex];
this.systemIndex += 1;
return {value: [emoji.aliases[0], emoji]};
}
if (this.customIndex < customEmojisArray.length) {
const emoji = customEmojisArray[this.customIndex][1];
this.customIndex += 1;
return {value: [emoji.name, emoji]};
}
return {done: true};
},
};
}
}