X-Git-Url: https://scm.cri.ensmp.fr/git/ckeditor.git/blobdiff_plain/256592bf803e851aa7fc953e08a6e9e58d970f8c..871bad8291b6dbc29d489d95d185458caab25158:/skins/ckeditor/_source/plugins/htmldataprocessor/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
+*/
+
+(function()
+{
+	// Regex to scan for   at the end of blocks, which are actually placeholders.
+	// Safari transforms the   to \xa0. (#4172)
+	var tailNbspRegex = /^[\t\r\n ]*(?: |\xa0)$/;
+
+	var protectedSourceMarker = '{cke_protected}';
+
+	// Return the last non-space child node of the block (#4344).
+	function lastNoneSpaceChild( block )
+	{
+		var lastIndex = block.children.length,
+			last = block.children[ lastIndex - 1 ];
+		while (  last && last.type == CKEDITOR.NODE_TEXT && !CKEDITOR.tools.trim( last.value ) )
+			last = block.children[ --lastIndex ];
+		return last;
+	}
+
+	function trimFillers( block, fromSource )
+	{
+		// If the current node is a block, and if we're converting from source or
+		// we're not in IE then search for and remove any tailing BR node.
+		//
+		// Also, any   at the end of blocks are fillers, remove them as well.
+		// (#2886)
+		var children = block.children, lastChild = lastNoneSpaceChild( block );
+		if ( lastChild )
+		{
+			if ( ( fromSource || !CKEDITOR.env.ie ) && lastChild.type == CKEDITOR.NODE_ELEMENT && lastChild.name == 'br' )
+				children.pop();
+			if ( lastChild.type == CKEDITOR.NODE_TEXT && tailNbspRegex.test( lastChild.value ) )
+				children.pop();
+		}
+	}
+
+	function blockNeedsExtension( block, fromSource, extendEmptyBlock )
+	{
+		if( !fromSource && ( !extendEmptyBlock ||
+			typeof extendEmptyBlock == 'function' && ( extendEmptyBlock( block ) === false ) ) )
+			return false;
+
+        // 1. For IE version >=8,  empty blocks are displayed correctly themself in wysiwiyg;
+        // 2. For the rest, at least table cell and list item need no filler space.
+        // (#6248)
+        if ( fromSource && CKEDITOR.env.ie &&
+                ( document.documentMode > 7
+                || block.name in CKEDITOR.dtd.tr
+                || block.name in CKEDITOR.dtd.$listItem ) )
+            return false;
+
+		var lastChild = lastNoneSpaceChild( block );
+
+		return !lastChild || lastChild &&
+				( lastChild.type == CKEDITOR.NODE_ELEMENT && lastChild.name == 'br'
+				// Some of the controls in form needs extension too,
+				// to move cursor at the end of the form. (#4791)
+				|| block.name == 'form' && lastChild.name == 'input' );
+	}
+
+	function getBlockExtension( isOutput, emptyBlockFiller )
+	{
+		return function( node )
+		{
+			trimFillers( node, !isOutput );
+
+			if ( blockNeedsExtension( node, !isOutput, emptyBlockFiller ) )
+			{
+				if ( isOutput || CKEDITOR.env.ie )
+					node.add( new CKEDITOR.htmlParser.text( '\xa0' ) );
+				else
+					node.add( new CKEDITOR.htmlParser.element( 'br', {} ) );
+			}
+		};
+	}
+
+	var dtd = CKEDITOR.dtd;
+
+	// Define orders of table elements.
+	var tableOrder = [ 'caption', 'colgroup', 'col', 'thead', 'tfoot', 'tbody' ];
+
+	// Find out the list of block-like tags that can contain <br>.
+	var blockLikeTags = CKEDITOR.tools.extend( {}, dtd.$block, dtd.$listItem, dtd.$tableContent );
+	for ( var i in blockLikeTags )
+	{
+		if ( ! ( 'br' in dtd[i] ) )
+			delete blockLikeTags[i];
+	}
+	// We just avoid filler in <pre> right now.
+	// TODO: Support filler for <pre>, line break is also occupy line height.
+	delete blockLikeTags.pre;
+	var defaultDataFilterRules =
+	{
+		elements : {},
+		attributeNames :
+		[
+			// Event attributes (onXYZ) must not be directly set. They can become
+			// active in the editing area (IE|WebKit).
+			[ ( /^on/ ), 'data-cke-pa-on' ]
+		]
+	};
+
+	var defaultDataBlockFilterRules = { elements : {} };
+
+	for ( i in blockLikeTags )
+		defaultDataBlockFilterRules.elements[ i ] = getBlockExtension();
+
+	var defaultHtmlFilterRules =
+		{
+			elementNames :
+			[
+				// Remove the "cke:" namespace prefix.
+				[ ( /^cke:/ ), '' ],
+
+				// Ignore <?xml:namespace> tags.
+				[ ( /^\?xml:namespace$/ ), '' ]
+			],
+
+			attributeNames :
+			[
+				// Attributes saved for changes and protected attributes.
+				[ ( /^data-cke-(saved|pa)-/ ), '' ],
+
+				// All "data-cke-" attributes are to be ignored.
+				[ ( /^data-cke-.*/ ), '' ],
+
+				[ 'hidefocus', '' ]
+			],
+
+			elements :
+			{
+				$ : function( element )
+				{
+					var attribs = element.attributes;
+
+					if ( attribs )
+					{
+						// Elements marked as temporary are to be ignored.
+						if ( attribs[ 'data-cke-temp' ] )
+							return false;
+
+						// Remove duplicated attributes - #3789.
+						var attributeNames = [ 'name', 'href', 'src' ],
+							savedAttributeName;
+						for ( var i = 0 ; i < attributeNames.length ; i++ )
+						{
+							savedAttributeName = 'data-cke-saved-' + attributeNames[ i ];
+							savedAttributeName in attribs && ( delete attribs[ attributeNames[ i ] ] );
+						}
+					}
+
+					return element;
+				},
+
+				// The contents of table should be in correct order (#4809).
+				table : function( element )
+				{
+					var children = element.children;
+					children.sort( function ( node1, node2 )
+								   {
+									   return node1.type == CKEDITOR.NODE_ELEMENT && node2.type == node1.type ?
+											CKEDITOR.tools.indexOf( tableOrder, node1.name )  > CKEDITOR.tools.indexOf( tableOrder, node2.name ) ? 1 : -1 : 0;
+								   } );
+				},
+
+				embed : function( element )
+				{
+					var parent = element.parent;
+
+					// If the <embed> is child of a <object>, copy the width
+					// and height attributes from it.
+					if ( parent && parent.name == 'object' )
+					{
+						var parentWidth = parent.attributes.width,
+							parentHeight = parent.attributes.height;
+						parentWidth && ( element.attributes.width = parentWidth );
+						parentHeight && ( element.attributes.height = parentHeight );
+					}
+				},
+				// Restore param elements into self-closing.
+				param : function( param )
+				{
+					param.children = [];
+					param.isEmpty = true;
+					return param;
+				},
+
+				// Remove empty link but not empty anchor.(#3829)
+				a : function( element )
+				{
+					if ( !( element.children.length ||
+							element.attributes.name ||
+							element.attributes[ 'data-cke-saved-name' ] ) )
+					{
+						return false;
+					}
+				},
+
+				// Remove dummy span in webkit.
+				span: function( element )
+				{
+					if ( element.attributes[ 'class' ] == 'Apple-style-span' )
+						delete element.name;
+				},
+
+				// Empty <pre> in IE is reported with filler node (&nbsp;).
+				pre : function( element ) { CKEDITOR.env.ie && trimFillers( element ); },
+
+				html : function( element )
+				{
+					delete element.attributes.contenteditable;
+					delete element.attributes[ 'class' ];
+				},
+
+				body : function( element )
+				{
+					delete element.attributes.spellcheck;
+					delete element.attributes.contenteditable;
+				},
+
+				style : function( element )
+				{
+					var child = element.children[ 0 ];
+					child && child.value && ( child.value = CKEDITOR.tools.trim( child.value ));
+
+					if ( !element.attributes.type )
+						element.attributes.type = 'text/css';
+				},
+
+				title : function( element )
+				{
+					var titleText = element.children[ 0 ];
+					titleText && ( titleText.value = element.attributes[ 'data-cke-title' ] || '' );
+				}
+			},
+
+			attributes :
+			{
+				'class' : function( value, element )
+				{
+					// Remove all class names starting with "cke_".
+					return CKEDITOR.tools.ltrim( value.replace( /(?:^|\s+)cke_[^\s]*/g, '' ) ) || false;
+				}
+			}
+		};
+
+	if ( CKEDITOR.env.ie )
+	{
+		// IE outputs style attribute in capital letters. We should convert
+		// them back to lower case, while not hurting the values (#5930)
+		defaultHtmlFilterRules.attributes.style = function( value, element )
+		{
+			return value.replace( /(^|;)([^\:]+)/g, function( match )
+				{
+					return match.toLowerCase();
+				});
+		};
+	}
+
+	function protectReadOnly( element )
+	{
+		var attrs = element.attributes;
+
+		// We should flag that the element was locked by our code so
+		// it'll be editable by the editor functions (#6046).
+		if ( attrs.contenteditable != "false" )
+			attrs[ 'data-cke-editable' ] = attrs.contenteditable ? 'true' : 1;
+
+		attrs.contenteditable = "false";
+	}
+	function unprotectReadyOnly( element )
+	{
+		var attrs = element.attributes;
+		switch( attrs[ 'data-cke-editable' ] )
+		{
+			case 'true':	attrs.contenteditable = 'true';	break;
+			case '1':		delete attrs.contenteditable;	break;
+		}
+	}
+	// Disable form elements editing mode provided by some browers. (#5746)
+	for ( i in { input : 1, textarea : 1 } )
+	{
+		defaultDataFilterRules.elements[ i ] = protectReadOnly;
+		defaultHtmlFilterRules.elements[ i ] = unprotectReadyOnly;
+	}
+
+	var protectElementRegex = /<(a|area|img|input)\b([^>]*)>/gi,
+		protectAttributeRegex = /\b(href|src|name)\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|(?:[^ "'>]+))/gi;
+
+	var protectElementsRegex = /(?:<style(?=[ >])[^>]*>[\s\S]*<\/style>)|(?:<(:?link|meta|base)[^>]*>)/gi,
+		encodedElementsRegex = /<cke:encoded>([^<]*)<\/cke:encoded>/gi;
+
+	var protectElementNamesRegex = /(<\/?)((?:object|embed|param|html|body|head|title)[^>]*>)/gi,
+		unprotectElementNamesRegex = /(<\/?)cke:((?:html|body|head|title)[^>]*>)/gi;
+
+	var protectSelfClosingRegex = /<cke:(param|embed)([^>]*?)\/?>(?!\s*<\/cke:\1)/gi;
+
+	function protectAttributes( html )
+	{
+		return html.replace( protectElementRegex, function( element, tag, attributes )
+		{
+			return '<' +  tag + attributes.replace( protectAttributeRegex, function( fullAttr, attrName )
+			{
+				// We should not rewrite the existed protected attributes, e.g. clipboard content from editor. (#5218)
+				if ( attributes.indexOf( 'data-cke-saved-' + attrName ) == -1 )
+					return ' data-cke-saved-' + fullAttr + ' ' + fullAttr;
+
+				return fullAttr;
+			}) + '>';
+		});
+	}
+
+	function protectElements( html )
+	{
+		return html.replace( protectElementsRegex, function( match )
+			{
+				return '<cke:encoded>' + encodeURIComponent( match ) + '</cke:encoded>';
+			});
+	}
+
+	function unprotectElements( html )
+	{
+		return html.replace( encodedElementsRegex, function( match, encoded )
+			{
+				return decodeURIComponent( encoded );
+			});
+	}
+
+	function protectElementsNames( html )
+	{
+		return html.replace( protectElementNamesRegex, '$1cke:$2');
+	}
+
+	function unprotectElementNames( html )
+	{
+		return html.replace( unprotectElementNamesRegex, '$1$2' );
+	}
+
+	function protectSelfClosingElements( html )
+	{
+		return html.replace( protectSelfClosingRegex, '<cke:$1$2></cke:$1>' );
+	}
+
+	function protectPreFormatted( html )
+	{
+		return html.replace( /(<pre\b[^>]*>)(\r\n|\n)/g, '$1$2$2' );
+	}
+
+	function protectRealComments( html )
+	{
+		return html.replace( /<!--(?!{cke_protected})[\s\S]+?-->/g, function( match )
+			{
+				return '<!--' + protectedSourceMarker +
+						'{C}' +
+						encodeURIComponent( match ).replace( /--/g, '%2D%2D' ) +
+						'-->';
+			});
+	}
+
+	function unprotectRealComments( html )
+	{
+		return html.replace( /<!--\{cke_protected\}\{C\}([\s\S]+?)-->/g, function( match, data )
+			{
+				return decodeURIComponent( data );
+			});
+	}
+
+	function unprotectSource( html, editor )
+	{
+		var store = editor._.dataStore;
+
+		return html.replace( /<!--\{cke_protected\}([\s\S]+?)-->/g, function( match, data )
+			{
+				return decodeURIComponent( data );
+			}).replace( /\{cke_protected_(\d+)\}/g, function( match, id )
+			{
+				return store && store[ id ] || '';
+			});
+	}
+
+	function protectSource( data, editor )
+	{
+		var protectedHtml = [],
+			protectRegexes = editor.config.protectedSource,
+			store = editor._.dataStore || ( editor._.dataStore = { id : 1 } ),
+			tempRegex = /<\!--\{cke_temp(comment)?\}(\d*?)-->/g;
+
+		var regexes =
+			[
+				// Script tags will also be forced to be protected, otherwise
+				// IE will execute them.
+				( /<script[\s\S]*?<\/script>/gi ),
+
+				// <noscript> tags (get lost in IE and messed up in FF).
+				/<noscript[\s\S]*?<\/noscript>/gi
+			]
+			.concat( protectRegexes );
+
+		// First of any other protection, we must protect all comments
+		// to avoid loosing them (of course, IE related).
+		// Note that we use a different tag for comments, as we need to
+		// transform them when applying filters.
+		data = data.replace( (/<!--[\s\S]*?-->/g), function( match )
+			{
+				return  '<!--{cke_tempcomment}' + ( protectedHtml.push( match ) - 1 ) + '-->';
+			});
+
+		for ( var i = 0 ; i < regexes.length ; i++ )
+		{
+			data = data.replace( regexes[i], function( match )
+				{
+					match = match.replace( tempRegex, 		// There could be protected source inside another one. (#3869).
+						function( $, isComment, id )
+						{
+							return protectedHtml[ id ];
+						}
+					);
+
+					// Avoid protecting over protected, e.g. /\{.*?\}/
+					return ( /cke_temp(comment)?/ ).test( match ) ? match
+						: '<!--{cke_temp}' + ( protectedHtml.push( match ) - 1 ) + '-->';
+				});
+		}
+		data = data.replace( tempRegex,	function( $, isComment, id )
+			{
+				return '<!--' + protectedSourceMarker +
+						( isComment ? '{C}' : '' ) +
+						encodeURIComponent( protectedHtml[ id ] ).replace( /--/g, '%2D%2D' ) +
+						'-->';
+			}
+		);
+
+		// Different protection pattern is used for those that
+		// live in attributes to avoid from being HTML encoded.
+		return data.replace( /(['"]).*?\1/g, function ( match )
+		{
+			return match.replace( /<!--\{cke_protected\}([\s\S]+?)-->/g, function( match, data )
+			{
+				store[ store.id ] = decodeURIComponent( data );
+				return '{cke_protected_'+ ( store.id++ )  + '}';
+			});
+		});
+	}
+
+	CKEDITOR.plugins.add( 'htmldataprocessor',
+	{
+		requires : [ 'htmlwriter' ],
+
+		init : function( editor )
+		{
+			var dataProcessor = editor.dataProcessor = new CKEDITOR.htmlDataProcessor( editor );
+
+			dataProcessor.writer.forceSimpleAmpersand = editor.config.forceSimpleAmpersand;
+
+			dataProcessor.dataFilter.addRules( defaultDataFilterRules );
+			dataProcessor.dataFilter.addRules( defaultDataBlockFilterRules );
+			dataProcessor.htmlFilter.addRules( defaultHtmlFilterRules );
+
+			var defaultHtmlBlockFilterRules = { elements : {} };
+			for ( i in blockLikeTags )
+				defaultHtmlBlockFilterRules.elements[ i ] = getBlockExtension( true, editor.config.fillEmptyBlocks );
+
+			dataProcessor.htmlFilter.addRules( defaultHtmlBlockFilterRules );
+		},
+
+		onLoad : function()
+		{
+			! ( 'fillEmptyBlocks' in CKEDITOR.config ) && ( CKEDITOR.config.fillEmptyBlocks = 1 );
+		}
+	});
+
+	CKEDITOR.htmlDataProcessor = function( editor )
+	{
+		this.editor = editor;
+
+		this.writer = new CKEDITOR.htmlWriter();
+		this.dataFilter = new CKEDITOR.htmlParser.filter();
+		this.htmlFilter = new CKEDITOR.htmlParser.filter();
+	};
+
+	CKEDITOR.htmlDataProcessor.prototype =
+	{
+		toHtml : function( data, fixForBody )
+		{
+			// The source data is already HTML, but we need to clean
+			// it up and apply the filter.
+
+			data = protectSource( data, this.editor );
+
+			// Before anything, we must protect the URL attributes as the
+			// browser may changing them when setting the innerHTML later in
+			// the code.
+			data = protectAttributes( data );
+
+			// Protect elements than can't be set inside a DIV. E.g. IE removes
+			// style tags from innerHTML. (#3710)
+			data = protectElements( data );
+
+			// Certain elements has problem to go through DOM operation, protect
+			// them by prefixing 'cke' namespace. (#3591)
+			data = protectElementsNames( data );
+
+			// All none-IE browsers ignore self-closed custom elements,
+			// protecting them into open-close. (#3591)
+			data = protectSelfClosingElements( data );
+
+			// Compensate one leading line break after <pre> open as browsers
+			// eat it up. (#5789)
+			data = protectPreFormatted( data );
+
+			// Call the browser to help us fixing a possibly invalid HTML
+			// structure.
+			var div = new CKEDITOR.dom.element( 'div' );
+			// Add fake character to workaround IE comments bug. (#3801)
+			div.setHtml( 'a' + data );
+			data = div.getHtml().substr( 1 );
+
+			// Unprotect "some" of the protected elements at this point.
+			data = unprotectElementNames( data );
+
+			data = unprotectElements( data );
+
+			// Restore the comments that have been protected, in this way they
+			// can be properly filtered.
+			data = unprotectRealComments( data );
+
+			// Now use our parser to make further fixes to the structure, as
+			// well as apply the filter.
+			var fragment = CKEDITOR.htmlParser.fragment.fromHtml( data, fixForBody ),
+				writer = new CKEDITOR.htmlParser.basicWriter();
+
+			fragment.writeHtml( writer, this.dataFilter );
+			data = writer.getHtml( true );
+
+			// Protect the real comments again.
+			data = protectRealComments( data );
+
+			return data;
+		},
+
+		toDataFormat : function( html, fixForBody )
+		{
+			var writer = this.writer,
+				fragment = CKEDITOR.htmlParser.fragment.fromHtml( html, fixForBody );
+
+			writer.reset();
+
+			fragment.writeHtml( writer, this.htmlFilter );
+
+			var data = writer.getHtml( true );
+
+			// Restore those non-HTML protected source. (#4475,#4880)
+			data = unprotectRealComments( data );
+			data = unprotectSource( data, this.editor );
+
+			return data;
+		}
+	};
+})();
+
+/**
+ * Whether to force using "&" instead of "&amp;amp;" in elements attributes
+ * values, it's not recommended to change this setting for compliance with the
+ * W3C XHTML 1.0 standards (<a href="http://www.w3.org/TR/xhtml1/#C_12">C.12, XHTML 1.0</a>).
+ * @name CKEDITOR.config.forceSimpleAmpersand
+ * @name CKEDITOR.config.forceSimpleAmpersand
+ * @type Boolean
+ * @default false
+ * @example
+ * config.forceSimpleAmpersand = false;
+ */
+
+/**
+ * Whether a filler text (non-breaking space entity - &nbsp;) will be inserted into empty block elements in HTML output,
+ * this is used to render block elements properly with line-height; When a function is instead specified,
+ * it'll be passed a {@link CKEDITOR.htmlParser.element} to decide whether adding the filler text
+ * by expecting a boolean return value.
+ * @name CKEDITOR.config.fillEmptyBlocks
+ * @since 3.5
+ * @type Boolean
+ * @default true
+ * @example
+ * config.fillEmptyBlocks = false;	// Prevent filler nodes in all empty blocks.
+ *
+ * // Prevent filler node only in float cleaners.
+ * config.fillEmptyBlocks = function( element )
+ * {
+ * 	if ( element.attributes[ 'class' ].indexOf ( 'clear-both' ) != -1 )
+ * 		return false;
+ * }
+ */