debian-mirror-gitlab/app/assets/javascripts/behaviors/gl_emoji.js
2019-03-02 22:35:43 +05:30

52 lines
1.9 KiB
JavaScript

import 'document-register-element';
import isEmojiUnicodeSupported from '../emoji/support';
class GlEmoji extends HTMLElement {
constructor() {
super();
const emojiUnicode = this.textContent.trim();
const { name, unicodeVersion, fallbackSrc, fallbackSpriteClass } = this.dataset;
const isEmojiUnicode =
this.childNodes &&
Array.prototype.every.call(this.childNodes, childNode => childNode.nodeType === 3);
const hasImageFallback = fallbackSrc && fallbackSrc.length > 0;
const hasCssSpriteFalback = fallbackSpriteClass && fallbackSpriteClass.length > 0;
if (emojiUnicode && isEmojiUnicode && !isEmojiUnicodeSupported(emojiUnicode, unicodeVersion)) {
// CSS sprite fallback takes precedence over image fallback
if (hasCssSpriteFalback) {
if (!gon.emoji_sprites_css_added && gon.emoji_sprites_css_path) {
const emojiSpriteLinkTag = document.createElement('link');
emojiSpriteLinkTag.setAttribute('rel', 'stylesheet');
emojiSpriteLinkTag.setAttribute('href', gon.emoji_sprites_css_path);
document.head.appendChild(emojiSpriteLinkTag);
gon.emoji_sprites_css_added = true;
}
// IE 11 doesn't like adding multiple at once :(
this.classList.add('emoji-icon');
this.classList.add(fallbackSpriteClass);
} else {
import(/* webpackChunkName: 'emoji' */ '../emoji')
.then(({ emojiImageTag, emojiFallbackImageSrc }) => {
if (hasImageFallback) {
this.innerHTML = emojiImageTag(name, fallbackSrc);
} else {
const src = emojiFallbackImageSrc(name);
this.innerHTML = emojiImageTag(name, src);
}
})
.catch(() => {
// do nothing
});
}
}
}
}
export default function installGlEmojiElement() {
if (!customElements.get('gl-emoji')) {
customElements.define('gl-emoji', GlEmoji);
}
}