source: branches/2.2/filemanager/tp/ckeditor/_source/plugins/removeformat/plugin.js @ 3019

/*
Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

CKEDITOR.plugins.add( 'removeformat',
{
        requires : [ 'selection' ],

        init : function( editor )
        {
                editor.addCommand( 'removeFormat', CKEDITOR.plugins.removeformat.commands.removeformat );
                editor.ui.addButton( 'RemoveFormat',
                        {
                                label : editor.lang.removeFormat,
                                command : 'removeFormat'
                        });
        }
});

CKEDITOR.plugins.removeformat =
{
        commands :
        {
                removeformat :
                {
                        exec : function( editor )
                        {
                                var tagsRegex = editor._.removeFormatRegex ||
                                        ( editor._.removeFormatRegex = new RegExp( '^(?:' + editor.config.removeFormatTags.replace( /,/g,'|' ) + ')$', 'i' ) );

                                var removeAttributes = editor._.removeAttributes ||
                                        ( editor._.removeAttributes = editor.config.removeFormatAttributes.split( ',' ) );

                                var ranges = editor.getSelection().getRanges();

                                for ( var i = 0, range ; range = ranges[ i ] ; i++ )
                                {
                                        if ( range.collapsed )
                                                continue;

                                        range.enlarge( CKEDITOR.ENLARGE_ELEMENT );

                                        // Bookmark the range so we can re-select it after processing.
                                        var bookmark = range.createBookmark();

                                        // The style will be applied within the bookmark boundaries.
                                        var startNode   = bookmark.startNode;
                                        var endNode             = bookmark.endNode;

                                        // We need to check the selection boundaries (bookmark spans) to break
                                        // the code in a way that we can properly remove partially selected nodes.
                                        // For example, removing a <b> style from
                                        //              <b>This is [some text</b> to show <b>the] problem</b>
                                        // ... where [ and ] represent the selection, must result:
                                        //              <b>This is </b>[some text to show the]<b> problem</b>
                                        // The strategy is simple, we just break the partial nodes before the
                                        // removal logic, having something that could be represented this way:
                                        //              <b>This is </b>[<b>some text</b> to show <b>the</b>]<b> problem</b>

                                        var breakParent = function( node )
                                        {
                                                // Let's start checking the start boundary.
                                                var path = new CKEDITOR.dom.elementPath( node );
                                                var pathElements = path.elements;

                                                for ( var i = 1, pathElement ; pathElement = pathElements[ i ] ; i++ )
                                                {
                                                        if ( pathElement.equals( path.block ) || pathElement.equals( path.blockLimit ) )
                                                                break;

                                                        // If this element can be removed (even partially).
                                                        if ( tagsRegex.test( pathElement.getName() ) )
                                                                node.breakParent( pathElement );
                                                }
                                        };

                                        breakParent( startNode );
                                        breakParent( endNode );

                                        // Navigate through all nodes between the bookmarks.
                                        var currentNode = startNode.getNextSourceNode( true, CKEDITOR.NODE_ELEMENT );

                                        while ( currentNode )
                                        {
                                                // If we have reached the end of the selection, stop looping.
                                                if ( currentNode.equals( endNode ) )
                                                        break;

                                                // Cache the next node to be processed. Do it now, because
                                                // currentNode may be removed.
                                                var nextNode = currentNode.getNextSourceNode( false, CKEDITOR.NODE_ELEMENT );

                                                // This node must not be a fake element.
                                                if ( currentNode.getName() != 'img' || !currentNode.getAttribute( '_cke_protected_html' ) )
                                                {
                                                        // Remove elements nodes that match with this style rules.
                                                        if ( tagsRegex.test( currentNode.getName() ) )
                                                                currentNode.remove( true );
                                                        else
                                                                currentNode.removeAttributes( removeAttributes );
                                                }

                                                currentNode = nextNode;
                                        }

                                        range.moveToBookmark( bookmark );
                                }

                                editor.getSelection().selectRanges( ranges );
                        }
                }
        }
};

/**
 * A comma separated list of elements to be removed when executing the "remove
 " format" command. Note that only inline elements are allowed.
 * @type String
 * @default 'b,big,code,del,dfn,em,font,i,ins,kbd,q,samp,small,span,strike,strong,sub,sup,tt,u,var'
 * @example
 */
CKEDITOR.config.removeFormatTags = 'b,big,code,del,dfn,em,font,i,ins,kbd,q,samp,small,span,strike,strong,sub,sup,tt,u,var';

/**
 * A comma separated list of elements attributes to be removed when executing
 * the "remove format" command.
 * @type String
 * @default 'class,style,lang,width,height,align,hspace,valign'
 * @example
 */
CKEDITOR.config.removeFormatAttributes = 'class,style,lang,width,height,align,hspace,valign';