168 lines
3.6 KiB
JavaScript
168 lines
3.6 KiB
JavaScript
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( function( window, settings ) {
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function wpEmoji() {
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var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver,
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/**
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* Flag to determine if the browser and the OS support emoji.
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*
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* @since 4.2.0
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*
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* @var Boolean
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*/
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supportsEmoji = false,
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/**
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* Flag to determine if the browser and the OS support flag (two character) emoji.
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*
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* @since 4.2.0
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*
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* @var Boolean
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*/
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supportsFlagEmoji = false,
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/**
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* Flag to determine if we should replace emoji characters with images.
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*
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* @since 4.2.0
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*
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* @var Boolean
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*/
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replaceEmoji = false,
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// Private
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twemoji, timer,
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count = 0;
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/**
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* Runs when the document load event is fired, so we can do our first parse of the page.
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*
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* @since 4.2.0
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*/
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function load() {
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if ( typeof window.twemoji === 'undefined' ) {
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// Break if waiting for longer than 30 sec.
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if ( count > 600 ) {
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return;
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}
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// Still waiting.
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window.clearTimeout( timer );
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timer = window.setTimeout( load, 50 );
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count++;
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return;
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}
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twemoji = window.twemoji;
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if ( MutationObserver ) {
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new MutationObserver( function( mutationRecords ) {
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var i = mutationRecords.length,
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ii, node;
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while ( i-- ) {
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ii = mutationRecords[ i ].addedNodes.length;
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while ( ii-- ) {
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node = mutationRecords[ i ].addedNodes[ ii ];
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if ( node.nodeType === 3 ) {
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node = node.parentNode;
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}
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if ( node && node.nodeType === 1 ) {
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parse( node );
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}
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}
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}
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} ).observe( document.body, {
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childList: true,
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subtree: true
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} );
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}
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parse( document.body );
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}
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/**
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* Given an element or string, parse any emoji characters into Twemoji images.
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*
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* @since 4.2.0
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*
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* @param {HTMLElement|String} object The element or string to parse.
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* @param {Object} args Additional options for Twemoji.
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*/
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function parse( object, args ) {
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if ( ! replaceEmoji ) {
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return object;
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}
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var className = ( args && args.className ) || 'emoji';
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return twemoji.parse( object, {
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base: settings.baseUrl,
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ext: settings.ext,
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className: className,
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callback: function( icon, options ) {
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// Ignore some standard characters that TinyMCE recommends in its character map.
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switch ( icon ) {
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case 'a9':
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case 'ae':
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case '2122':
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case '2194':
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case '2660':
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case '2663':
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case '2665':
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case '2666':
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return false;
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}
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if ( ! supportsFlagEmoji && supportsEmoji &&
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! /^1f1(?:e[6-9a-f]|f[0-9a-f])-1f1(?:e[6-9a-f]|f[0-9a-f])$/.test( icon ) ) {
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return false;
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}
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return ''.concat( options.base, '/', icon, options.ext );
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}
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} );
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}
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// Load when the readyState changes to 'interactive', not 'complete'.
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function onLoad() {
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if ( 'interactive' === document.readyState ) {
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load();
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}
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}
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/**
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* Initialize our emoji support, and set up listeners.
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*/
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if ( settings ) {
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supportsEmoji = window._wpemojiSettings.supports.simple;
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supportsFlagEmoji = window._wpemojiSettings.supports.flag;
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replaceEmoji = ! supportsEmoji || ! supportsFlagEmoji;
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if ( 'loading' == document.readyState ) {
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if ( document.addEventListener ) {
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document.addEventListener( 'readystatechange', onLoad, false );
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} else if ( document.attachEvent ) {
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document.attachEvent( 'onreadystatechange', onLoad );
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}
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} else {
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load();
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}
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}
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return {
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replaceEmoji: replaceEmoji,
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parse: parse
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};
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}
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window.wp = window.wp || {};
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window.wp.emoji = new wpEmoji();
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} )( window, window._wpemojiSettings );
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