WordPress/wp-includes/js/wp-emoji.js
2015-05-09 23:44:27 +00:00

183 lines
4.7 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;
}
if ( test( node.textContent ) ) {
parse( node );
}
}
}
} ).observe( document.body, {
childList: true,
subtree: true
} );
}
parse( document.body );
}
/**
* Test if a text string contains emoji characters
*
* @since 4.3.0
*
* @param {String} text The string to test
* @returns Boolean
*/
function test( text ) {
// Single char. U+20E3 to detect keycaps. U+00A9 "copyright sign" and U+00AE "registered sign" not included.
var single = /[\u203C\u2049\u20E3\u2122\u2139\u2194-\u2199\u21A9\u21AA\u2300\u231A\u231B\u2328\u2388\u23CF\u23E9-\u23F3\u23F8-\u23FA\u24C2\u25AA\u25AB\u25B6\u25C0\u25FB-\u25FE\u2600-\u2604\u260E\u2611\u2614\u2615\u2618\u261D\u2620\u2622\u2623\u2626\u262A\u262E\u262F\u2638\u2639\u263A\u2648-\u2653\u2660\u2663\u2665\u2666\u2668\u267B\u267F\u2692\u2693\u2694\u2696\u2697\u2699\u269B\u269C\u26A0\u26A1\u26AA\u26AB\u26B0\u26B1\u26BD\u26BE\u26C4\u26C5\u26C8\u26CE\u26CF\u26D1\u26D3\u26D4\u26E9\u26EA\u26F0-\u26F5\u26F7-\u26FA\u26FD\u2702\u2705\u2708-\u270D\u270F\u2712\u2714\u2716\u271D\u2721\u2728\u2733\u2734\u2744\u2747\u274C\u274E\u2753\u2754\u2755\u2757\u2763\u2764\u2795\u2796\u2797\u27A1\u27B0\u27BF\u2934\u2935\u2B05\u2B06\u2B07\u2B1B\u2B1C\u2B50\u2B55\u3030\u303D\u3297\u3299]/,
// Surrogate pair range. Only tests for the second half.
pair = /[\uDC00-\uDFFF]/;
if ( text ) {
return pair.test( text ) || single.test( text );
}
return false;
}
/**
* 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,
test: test
};
}
window.wp = window.wp || {};
window.wp.emoji = new wpEmoji();
} )( window, window._wpemojiSettings );