WordPress/wp-includes/js/wp-emoji.js
2015-07-17 20:17:27 +00:00

159 lines
3.4 KiB
JavaScript

( function( window, settings ) {
function wpEmoji() {
var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver,
/**
* Flag to determine if we should replace emoji characters with images.
*
* @since 4.2.0
*
* @var Boolean
*/
replaceEmoji = false,
// Private
twemoji, timer,
loaded = false,
count = 0;
/**
* Runs when the document load event is fired, so we can do our first parse of the page.
*
* @since 4.2.0
*/
function load() {
if ( loaded ) {
return;
}
if ( typeof window.twemoji === 'undefined' ) {
// Break if waiting for longer than 30 sec.
if ( count > 600 ) {
return;
}
// Still waiting.
window.clearTimeout( timer );
timer = window.setTimeout( load, 50 );
count++;
return;
}
twemoji = window.twemoji;
loaded = true;
if ( MutationObserver ) {
new MutationObserver( function( mutationRecords ) {
var i = mutationRecords.length,
addedNodes, removedNodes, ii, node;
while ( i-- ) {
addedNodes = mutationRecords[ i ].addedNodes;
removedNodes = mutationRecords[ i ].removedNodes;
ii = addedNodes.length;
if (
ii === 1 && removedNodes.length === 1 &&
addedNodes[0].nodeType === 3 &&
removedNodes[0].nodeName === 'IMG' &&
addedNodes[0].data === removedNodes[0].alt
) {
return;
}
while ( ii-- ) {
node = addedNodes[ ii ];
if ( node.nodeType === 3 ) {
node = node.parentNode;
}
if ( ! node || node.nodeType !== 1 || ( 'ownerSVGElement' in node ) ||
( node.className && typeof node.className === 'string' && node.className.indexOf( 'wp-exclude-emoji' ) !== -1 ) ) {
continue;
}
parse( node );
}
}
} ).observe( document.body, {
childList: true,
subtree: true
} );
}
parse( document.body );
}
/**
* Given an element or string, parse any emoji characters into Twemoji images.
*
* @since 4.2.0
*
* @param {HTMLElement|String} object The element or string to parse.
* @param {Object} args Additional options for Twemoji.
*/
function parse( object, args ) {
if ( ! replaceEmoji || ! twemoji ) {
return object;
}
args = args || {};
return twemoji.parse( object, {
base: settings.baseUrl,
ext: settings.ext,
className: args.className || 'emoji',
imgAttr: args.imgAttr,
callback: function( icon, options ) {
// Ignore some standard characters that TinyMCE recommends in its character map.
switch ( icon ) {
case 'a9':
case 'ae':
case '2122':
case '2194':
case '2660':
case '2663':
case '2665':
case '2666':
return false;
}
if ( ! settings.supports.flag && settings.supports.simple &&
! /^1f1(?:e[6-9a-f]|f[0-9a-f])-1f1(?:e[6-9a-f]|f[0-9a-f])$/.test( icon ) ) {
return false;
}
return ''.concat( options.base, icon, options.ext );
}
} );
}
/**
* Initialize our emoji support, and set up listeners.
*/
if ( settings ) {
replaceEmoji = ! settings.supports.simple || ! settings.supports.flag;
if ( settings.DOMReady ) {
load();
} else {
settings.readyCallback = load;
}
}
return {
replaceEmoji: replaceEmoji,
parse: parse
};
}
window.wp = window.wp || {};
window.wp.emoji = new wpEmoji();
} )( window, window._wpemojiSettings );