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// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
import AppDispatcher from '../dispatcher/app_dispatcher.jsx';
import Constants from 'utils/constants.jsx';
import EventEmitter from 'events';
import EmojiJson from 'utils/emoji.json';
const ActionTypes = Constants.ActionTypes;
const CHANGE_EVENT = 'changed';
class EmojiStore extends EventEmitter {
constructor() {
super();
this.dispatchToken = AppDispatcher.register(this.handleEventPayload.bind(this));
this.emojis = new Map(EmojiJson);
this.systemEmojis = new Map(EmojiJson);
this.unicodeEmojis = new Map();
for (const [, emoji] of this.systemEmojis) {
if (emoji.unicode) {
this.unicodeEmojis.set(emoji.unicode, emoji);
}
}
this.receivedCustomEmojis = false;
this.customEmojis = new Map();
}
addChangeListener(callback) {
this.on(CHANGE_EVENT, callback);
}
removeChangeListener(callback) {
this.removeListener(CHANGE_EVENT, callback);
}
emitChange() {
this.emit(CHANGE_EVENT);
}
hasReceivedCustomEmojis() {
return this.receivedCustomEmojis;
}
setCustomEmojis(customEmojis) {
this.customEmojis = new Map();
for (const emoji of customEmojis) {
this.addCustomEmoji(emoji);
}
// add custom emojis to the map first so that they can't override system ones
this.emojis = new Map([...this.customEmojis, ...this.systemEmojis]);
}
addCustomEmoji(emoji) {
this.customEmojis.set(emoji.name, emoji);
}
removeCustomEmoji(id) {
for (const [name, emoji] of this.customEmojis) {
if (emoji.id === id) {
this.customEmojis.delete(name);
break;
}
}
}
getSystemEmojis() {
return this.systemEmojis;
}
getCustomEmojiMap() {
return this.customEmojis;
}
getEmojis() {
return this.emojis;
}
has(name) {
return this.emojis.has(name);
}
get(name) {
// prioritize system emojis so that custom ones can't override them
return this.emojis.get(name);
}
hasUnicode(codepoint) {
return this.unicodeEmojis.has(codepoint);
}
getUnicode(codepoint) {
return this.unicodeEmojis.get(codepoint);
}
getEmojiImageUrl(emoji) {
if (emoji.id) {
// must match Client.getCustomEmojiImageUrl
return `/api/v3/emoji/${emoji.id}`;
}
const filename = emoji.unicode || emoji.filename || emoji.name;
return Constants.EMOJI_PATH + '/' + filename + '.png';
}
handleEventPayload(payload) {
const action = payload.action;
switch (action.type) {
case ActionTypes.RECEIVED_CUSTOM_EMOJIS:
this.setCustomEmojis(action.emojis);
this.receivedCustomEmojis = true;
this.emitChange();
break;
case ActionTypes.RECEIVED_CUSTOM_EMOJI:
this.addCustomEmoji(action.emoji);
this.emitChange();
break;
case ActionTypes.REMOVED_CUSTOM_EMOJI:
this.removeCustomEmoji(action.id);
this.emitChange();
break;
}
}
}
export default new EmojiStore();
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