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import installCustomElements from 'document-register-element';
import isEmojiUnicodeSupported from '../emoji/support';
installCustomElements(window);
export default function installGlEmojiElement() {
const GlEmojiElementProto = Object.create(HTMLElement.prototype);
GlEmojiElementProto.createdCallback = function createdCallback() {
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
});
}
}
};
document.registerElement('gl-emoji', {
prototype: GlEmojiElementProto,
});
}
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