1 /*
  2 Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.
  3 For licensing, see LICENSE.html or http://ckeditor.com/license
  4 */
  5
  6 CKEDITOR.plugins.add( 'removeformat',
  7 {
  8 	requires : [ 'selection' ],
  9
 10 	init : function( editor, pluginPath )
 11 	{
 12 		editor.addCommand( 'removeFormat', CKEDITOR.plugins.removeformat.commands.removeformat );
 13 		editor.ui.addButton( 'RemoveFormat',
 14 			{
 15 				label : editor.lang.removeFormat,
 16 				command : 'removeFormat'
 17 			});
 18 	}
 19 });
 20
 21 CKEDITOR.plugins.removeformat =
 22 {
 23 	commands :
 24 	{
 25 		removeformat :
 26 		{
 27 			exec : function( editor )
 28 			{
 29 				var tagsRegex = editor._.removeFormatRegex ||
 30 					( editor._.removeFormatRegex = new RegExp( '^(?:' + editor.config.removeFormatTags.replace( /,/g,'|' ) + ')$', 'i' ) );
 31
 32 				var removeAttributes = editor._.removeAttributes ||
 33 					( editor._.removeAttributes = editor.config.removeFormatAttributes.split( ',' ) );
 34
 35 				var ranges = editor.getSelection().getRanges();
 36
 37 				for ( var i = 0, range ; range = ranges[ i ] ; i++ )
 38 				{
 39 					if ( range.collapsed )
 40 						continue;
 41
 42 					range.enlarge( CKEDITOR.ENLARGE_ELEMENT );
 43
 44 					// Bookmark the range so we can re-select it after processing.
 45 					var bookmark = range.createBookmark();
 46
 47 					// The style will be applied within the bookmark boundaries.
 48 					var startNode	= bookmark.startNode;
 49 					var endNode		= bookmark.endNode;
 50
 51 					// We need to check the selection boundaries (bookmark spans) to break
 52 					// the code in a way that we can properly remove partially selected nodes.
 53 					// For example, removing a <b> style from
 54 					//		<b>This is [some text</b> to show <b>the] problem</b>
 55 					// ... where [ and ] represent the selection, must result:
 56 					//		<b>This is </b>[some text to show the]<b> problem</b>
 57 					// The strategy is simple, we just break the partial nodes before the
 58 					// removal logic, having something that could be represented this way:
 59 					//		<b>This is </b>[<b>some text</b> to show <b>the</b>]<b> problem</b>
 60
 61 					var breakParent = function( node )
 62 					{
 63 						// Let's start checking the start boundary.
 64 						var path = new CKEDITOR.dom.elementPath( node );
 65 						var pathElements = path.elements;
 66
 67 						for ( var i = 1, pathElement ; pathElement = pathElements[ i ] ; i++ )
 68 						{
 69 							if ( pathElement.equals( path.block ) || pathElement.equals( path.blockLimit ) )
 70 								break;
 71
 72 							// If this element can be removed (even partially).
 73 							if ( tagsRegex.test( pathElement.getName() ) )
 74 								node.breakParent( pathElement );
 75 						}
 76 					};
 77
 78 					breakParent( startNode );
 79 					breakParent( endNode );
 80
 81 					// Navigate through all nodes between the bookmarks.
 82 					var currentNode = startNode.getNextSourceNode( true, CKEDITOR.NODE_ELEMENT );
 83
 84 					while ( currentNode )
 85 					{
 86 						// If we have reached the end of the selection, stop looping.
 87 						if ( currentNode.equals( endNode ) )
 88 							break;
 89
 90 						// Cache the next node to be processed. Do it now, because
 91 						// currentNode may be removed.
 92 						var nextNode = currentNode.getNextSourceNode( false, CKEDITOR.NODE_ELEMENT );
 93
 94 						// This node must not be a fake element.
 95 						if ( currentNode.getName() != 'img' || !currentNode.getAttribute( '_cke_protected_html' ) )
 96 						{
 97 							// Remove elements nodes that match with this style rules.
 98 							if ( tagsRegex.test( currentNode.getName() ) )
 99 								currentNode.remove( true );
100 							else
101 								currentNode.removeAttributes( removeAttributes );
102 						}
103
104 						currentNode = nextNode;
105 					}
106
107 					range.moveToBookmark( bookmark );
108 				}
109
110 				editor.getSelection().selectRanges( ranges );
111 			}
112 		}
113 	}
114 };
115
116 // Only inline elements are valid.
117 CKEDITOR.config.removeFormatTags = 'b,big,code,del,dfn,em,font,i,ins,kbd,q,samp,small,span,strike,strong,sub,sup,tt,u,var';
118
119 CKEDITOR.config.removeFormatAttributes = 'class,style,lang,width,height,align,hspace,valign';
120