83 lines
2.7 KiB
JavaScript
83 lines
2.7 KiB
JavaScript
import {
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initEmojiMap,
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getEmojiInfo,
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emojiFallbackImageSrc,
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emojiImageTag,
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FALLBACK_EMOJI_KEY,
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} from '../emoji';
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import isEmojiUnicodeSupported from '../emoji/support';
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class GlEmoji extends HTMLElement {
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connectedCallback() {
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this.initialize();
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}
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initialize() {
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let emojiUnicode = this.textContent.trim();
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const { fallbackSpriteClass, fallbackSrc } = this.dataset;
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let { name, unicodeVersion } = this.dataset;
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return initEmojiMap().then(() => {
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if (!unicodeVersion) {
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const emojiInfo = getEmojiInfo(name);
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if (emojiInfo) {
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if (name !== emojiInfo.name) {
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if (emojiInfo.name === FALLBACK_EMOJI_KEY && this.innerHTML) {
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return; // When fallback emoji is used, but there is a <img> provided, use the <img> instead
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}
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({ name } = emojiInfo);
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this.dataset.name = emojiInfo.name;
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}
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unicodeVersion = emojiInfo.u;
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this.dataset.unicodeVersion = unicodeVersion;
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emojiUnicode = emojiInfo.e;
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this.textContent = emojiInfo.e;
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this.title = emojiInfo.d;
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}
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}
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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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if (
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emojiUnicode &&
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isEmojiUnicode &&
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!isEmojiUnicodeSupported(emojiUnicode, unicodeVersion)
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) {
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const hasImageFallback = fallbackSrc && fallbackSrc.length > 0;
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const hasCssSpriteFallback = fallbackSpriteClass && fallbackSpriteClass.length > 0;
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// CSS sprite fallback takes precedence over image fallback
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if (hasCssSpriteFallback) {
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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 if (hasImageFallback) {
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this.innerHTML = '';
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this.appendChild(emojiImageTag(name, fallbackSrc));
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} else {
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const src = emojiFallbackImageSrc(name);
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this.innerHTML = '';
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this.appendChild(emojiImageTag(name, src));
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}
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}
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});
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}
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}
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export default function installGlEmojiElement() {
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if (!customElements.get('gl-emoji')) {
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customElements.define('gl-emoji', GlEmoji);
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}
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}
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