mirror of https://github.com/zulip/zulip.git
69 lines
2.6 KiB
TypeScript
69 lines
2.6 KiB
TypeScript
import google_sheet from "emoji-datasource-google/img/google/sheets-256/64.png";
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import google_blob_sheet from "emoji-datasource-google-blob/img/google/sheets-256/64.png";
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import twitter_sheet from "emoji-datasource-twitter/img/twitter/sheets-256/64.png";
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import octopus_url from "../../static/generated/emoji/images-google-64/1f419.png";
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import {user_settings} from "./user_settings";
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import google_blob_css from "!style-loader?injectType=lazyStyleTag!css-loader!../generated/emoji-styles/google-blob-sprite.css";
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import google_css from "!style-loader?injectType=lazyStyleTag!css-loader!../generated/emoji-styles/google-sprite.css";
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import twitter_css from "!style-loader?injectType=lazyStyleTag!css-loader!../generated/emoji-styles/twitter-sprite.css";
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type EmojiSet = {
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css: {use: () => void; unuse: () => void};
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sheet: string;
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};
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const emojisets = new Map<string, EmojiSet>([
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["google", {css: google_css, sheet: google_sheet}],
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["google-blob", {css: google_blob_css, sheet: google_blob_sheet}],
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["twitter", {css: twitter_css, sheet: twitter_sheet}],
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]);
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// For `text` emoji set we fallback to `google` emoji set
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// for displaying emojis in emoji picker and typeahead.
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emojisets.set("text", emojisets.get("google")!);
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let current_emojiset: EmojiSet | undefined;
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export async function select(name: string): Promise<void> {
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const new_emojiset = emojisets.get(name);
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if (new_emojiset === current_emojiset) {
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return;
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}
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if (!new_emojiset) {
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throw new Error("Unknown emojiset " + name);
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}
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await new Promise((resolve, reject) => {
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const sheet = new Image();
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sheet.addEventListener("load", resolve);
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sheet.addEventListener("error", () => {
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// Unfortunately, the "event" we get doesn't have any
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// useful information on it, as it's not the window-level
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// error handler.
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reject(new Error("Failed to load emojiset " + name + " from " + sheet.src));
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});
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sheet.src = new_emojiset.sheet;
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});
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if (current_emojiset) {
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current_emojiset.css.unuse();
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}
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new_emojiset.css.use();
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current_emojiset = new_emojiset;
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}
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export function initialize(): void {
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void select(user_settings.emojiset);
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// Load the octopus image in the background, so that the browser
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// will cache it for later use. Note that we hardcode the octopus
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// emoji to the old Google one because it's better.
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//
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// TODO: We should probably just make this work just like the Zulip emoji.
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const octopus_image = new Image();
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octopus_image.src = octopus_url;
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}
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