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import installCustomElements from 'document-register-element';
import { emojiImageTag, emojiFallbackImageSrc } from '../emoji';
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) {
// IE 11 doesn't like adding multiple at once :(
this.classList.add('emoji-icon');
this.classList.add(fallbackSpriteClass);
} else if (hasImageFallback) {
this.innerHTML = emojiImageTag(name, fallbackSrc);
} else {
const src = emojiFallbackImageSrc(name);
this.innerHTML = emojiImageTag(name, src);
}
}
};
document.registerElement('gl-emoji', {
prototype: GlEmojiElementProto,
});
}
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