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/*
Copyright (c) 2003-2012, 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
if ( node.getAttribute( 'data-cke-temp' ) )
continue;
// Exclude stylesheets injected by extensions
if ( sheet.href && sheet.href.substr(0, 9) == 'chrome://' )
continue;
var sheetRules = sheet.cssRules || sheet.rules;
for ( var j = 0; j < sheetRules.length; j++ )
aRules.push( sheetRules[ j ].selectorText );
}
var aClasses = parseClasses( aRules, skipSelectors, validSelectors );
// Add each style to our "Styles" collection.
for ( i = 0; i < aClasses.length; i++ )
{
var oElement = aClasses[ i ].split( '.' ),
element = oElement[ 0 ].toLowerCase(),
sClassName = oElement[ 1 ];
styles.push( {
name : element + '.' + sClassName,
element : element,
attributes : {'class' : sClassName}
});
}
return styles;
}
// Register a plugin named "stylesheetparser".
CKEDITOR.plugins.add( 'stylesheetparser',
{
requires: [ 'styles' ],
onLoad : function()
{
var obj = CKEDITOR.editor.prototype;
obj.getStylesSet = CKEDITOR.tools.override( obj.getStylesSet, function( org )
{
return function( callback )
{
var self = this;
org.call( this, function( definitions )
{
// Rules that must be skipped
var skipSelectors = self.config.stylesheetParser_skipSelectors || ( /(^body\.|^\.)/i ),
// Rules that are valid
validSelectors = self.config.stylesheetParser_validSelectors || ( /\w+\.\w+/ );
callback( ( self._.stylesDefinitions = definitions.concat( LoadStylesCSS( self.document.$, skipSelectors, validSelectors ) ) ) );
});
};
});
}
});
})();
/**
* A regular expression that defines whether a CSS rule will be
* skipped by the Stylesheet Parser plugin. A CSS rule matching
* the regular expression will be ignored and will not be available
* in the Styles drop-down list.
* @name CKEDITOR.config.stylesheetParser_skipSelectors
* @type RegExp
* @default /(^body\.|^\.)/i
* @since 3.6
* @see CKEDITOR.config.stylesheetParser_validSelectors
* @example
* // Ignore rules for body and caption elements, classes starting with "high", and any class defined for no specific element.
* config.stylesheetParser_skipSelectors = /(^body\.|^caption\.|\.high|^\.)/i;
*/
/**
* A regular expression that defines which CSS rules will be used
* by the Stylesheet Parser plugin. A CSS rule matching the regular
* expression will be available in the Styles drop-down list.
* @name CKEDITOR.config.stylesheetParser_validSelectors
* @type RegExp
* @default /\w+\.\w+/
* @since 3.6
* @see CKEDITOR.config.stylesheetParser_skipSelectors
* @example
* // Only add rules for p and span elements.
* config.stylesheetParser_validSelectors = /\^(p|span)\.\w+/;
*/
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