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