SalesSystemOnline/ckeditor_3.6/ckeditor/_source/plugins/stylesheetparser/plugin.js

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/*
Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

/**
 * @stylesheetParser plugin.
 */

(function()
{
	// We want to extract only the elements with classes defined in the stylesheets:
	function parseClasses( aRules, skipSelectors, validSelectors )
	{
		// aRules are just the different rules in the style sheets
		// We want to merge them and them split them by commas, so we end up with only
		// the selectors
		var s = aRules.join(' ');
		// Remove selectors splitting the elements, leave only the class selector (.)
		s = s.replace( /(,|>|\+|~)/g, ' ' );
		// Remove attribute selectors: table[border="0"]
		s = s.replace( /\[[^\]]*/g, '' );
		// Remove Ids: div#main
		s = s.replace( /#[^\s]*/g, '' );
		// Remove pseudo-selectors and pseudo-elements: :hover :nth-child(2n+1) ::before
		s = s.replace( /\:{1,2}[^\s]*/g, '' );

		s = s.replace( /\s+/g, ' ' );

		var aSelectors = s.split( ' ' ),
			aClasses = [];

		for ( var i = 0; i < aSelectors.length ; i++ )
		{
			var selector = aSelectors[ i ];

			if ( validSelectors.test( selector ) && !skipSelectors.test( selector ) )
			{
				// If we still don't know about this one, add it
				if ( CKEDITOR.tools.indexOf( aClasses, selector ) == -1 )
					aClasses.push( selector );
			}
		}

		return aClasses;
	}

	function LoadStylesCSS( theDoc, skipSelectors, validSelectors )
	{
		var styles = [],
			// It will hold all the rules of the applied stylesheets (except those internal to CKEditor)
			aRules = [],
			i;

		for ( i = 0; i < theDoc.styleSheets.length; i++ )
		{
			var sheet = theDoc.styleSheets[ i ],
				node = sheet.ownerNode || sheet.owningElement;

			// Skip the internal stylesheets