X-Git-Url: https://scm.cri.ensmp.fr/git/ckeditor.git/blobdiff_plain/256592bf803e851aa7fc953e08a6e9e58d970f8c..871bad8291b6dbc29d489d95d185458caab25158:/skins/ckeditor/_source/core/dom/node.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
+*/
+
+/**
+ * @fileOverview Defines the {@link CKEDITOR.dom.node} class which is the base
+ *		class for classes that represent DOM nodes.
+ */
+
+/**
+ * Base class for classes representing DOM nodes. This constructor may return
+ * an instance of a class that inherits from this class, like
+ * {@link CKEDITOR.dom.element} or {@link CKEDITOR.dom.text}.
+ * @augments CKEDITOR.dom.domObject
+ * @param {Object} domNode A native DOM node.
+ * @constructor
+ * @see CKEDITOR.dom.element
+ * @see CKEDITOR.dom.text
+ * @example
+ */
+CKEDITOR.dom.node = function( domNode )
+{
+	if ( domNode )
+	{
+		switch ( domNode.nodeType )
+		{
+			// Safari don't consider document as element node type. (#3389)
+			case CKEDITOR.NODE_DOCUMENT :
+				return new CKEDITOR.dom.document( domNode );
+
+			case CKEDITOR.NODE_ELEMENT :
+				return new CKEDITOR.dom.element( domNode );
+
+			case CKEDITOR.NODE_TEXT :
+				return new CKEDITOR.dom.text( domNode );
+		}
+
+		// Call the base constructor.
+		CKEDITOR.dom.domObject.call( this, domNode );
+	}
+
+	return this;
+};
+
+CKEDITOR.dom.node.prototype = new CKEDITOR.dom.domObject();
+
+/**
+ * Element node type.
+ * @constant
+ * @example
+ */
+CKEDITOR.NODE_ELEMENT = 1;
+
+/**
+ * Document node type.
+ * @constant
+ * @example
+ */
+CKEDITOR.NODE_DOCUMENT = 9;
+
+/**
+ * Text node type.
+ * @constant
+ * @example
+ */
+CKEDITOR.NODE_TEXT = 3;
+
+/**
+ * Comment node type.
+ * @constant
+ * @example
+ */
+CKEDITOR.NODE_COMMENT = 8;
+
+CKEDITOR.NODE_DOCUMENT_FRAGMENT = 11;
+
+CKEDITOR.POSITION_IDENTICAL = 0;
+CKEDITOR.POSITION_DISCONNECTED = 1;
+CKEDITOR.POSITION_FOLLOWING = 2;
+CKEDITOR.POSITION_PRECEDING = 4;
+CKEDITOR.POSITION_IS_CONTAINED = 8;
+CKEDITOR.POSITION_CONTAINS = 16;
+
+CKEDITOR.tools.extend( CKEDITOR.dom.node.prototype,
+	/** @lends CKEDITOR.dom.node.prototype */
+	{
+		/**
+		 * Makes this node a child of another element.
+		 * @param {CKEDITOR.dom.element} element The target element to which
+		 *		this node will be appended.
+		 * @returns {CKEDITOR.dom.element} The target element.
+		 * @example
+		 * var p = new CKEDITOR.dom.element( 'p' );
+		 * var strong = new CKEDITOR.dom.element( 'strong' );
+		 * strong.appendTo( p );
+		 *
+		 * // result: "<p><strong></strong></p>"
+		 */
+		appendTo : function( element, toStart )
+		{
+			element.append( this, toStart );
+			return element;
+		},
+
+		clone : function( includeChildren, cloneId )
+		{
+			var $clone = this.$.cloneNode( includeChildren );
+
+			var removeIds = function( node )
+			{
+				if ( node.nodeType != CKEDITOR.NODE_ELEMENT )
+					return;
+
+				if ( !cloneId )
+					node.removeAttribute( 'id', false );
+				node.removeAttribute( 'data-cke-expando', false );
+
+				if ( includeChildren )
+				{
+					var childs = node.childNodes;
+					for ( var i=0; i < childs.length; i++ )
+						removeIds( childs[ i ] );
+				}
+			};
+
+			// The "id" attribute should never be cloned to avoid duplication.
+			removeIds( $clone );
+
+			return new CKEDITOR.dom.node( $clone );
+		},
+
+		hasPrevious : function()
+		{
+			return !!this.$.previousSibling;
+		},
+
+		hasNext : function()
+		{
+			return !!this.$.nextSibling;
+		},
+
+		/**
+		 * Inserts this element after a node.
+		 * @param {CKEDITOR.dom.node} node The node that will precede this element.
+		 * @returns {CKEDITOR.dom.node} The node preceding this one after
+		 *		insertion.
+		 * @example
+		 * var em = new CKEDITOR.dom.element( 'em' );
+		 * var strong = new CKEDITOR.dom.element( 'strong' );
+		 * strong.insertAfter( em );
+		 *
+		 * // result: "&lt;em&gt;&lt;/em&gt;&lt;strong&gt;&lt;/strong&gt;"
+		 */
+		insertAfter : function( node )
+		{
+			node.$.parentNode.insertBefore( this.$, node.$.nextSibling );
+			return node;
+		},
+
+		/**
+		 * Inserts this element before a node.
+		 * @param {CKEDITOR.dom.node} node The node that will succeed this element.
+		 * @returns {CKEDITOR.dom.node} The node being inserted.
+		 * @example
+		 * var em = new CKEDITOR.dom.element( 'em' );
+		 * var strong = new CKEDITOR.dom.element( 'strong' );
+		 * strong.insertBefore( em );
+		 *
+		 * // result: "&lt;strong&gt;&lt;/strong&gt;&lt;em&gt;&lt;/em&gt;"
+		 */
+		insertBefore : function( node )
+		{
+			node.$.parentNode.insertBefore( this.$, node.$ );
+			return node;
+		},
+
+		insertBeforeMe : function( node )
+		{
+			this.$.parentNode.insertBefore( node.$, this.$ );
+			return node;
+		},
+
+		/**
+		 * Retrieves a uniquely identifiable tree address for this node.
+		 * The tree address returned is an array of integers, with each integer
+		 * indicating a child index of a DOM node, starting from
+		 * <code>document.documentElement</code>.
+		 *
+		 * For example, assuming <code>&lt;body&gt;</code> is the second child
+		 * of <code>&lt;html&gt;</code> (<code>&lt;head&gt;</code> being the first),
+		 * and we would like to address the third child under the
+		 * fourth child of <code>&lt;body&gt;</code>, the tree address returned would be:
+		 * [1, 3, 2]
+		 *
+		 * The tree address cannot be used for finding back the DOM tree node once
+		 * the DOM tree structure has been modified.
+		 */
+		getAddress : function( normalized )
+		{
+			var address = [];
+			var $documentElement = this.getDocument().$.documentElement;
+			var node = this.$;
+
+			while ( node && node != $documentElement )
+			{
+				var parentNode = node.parentNode;
+
+				if ( parentNode )
+				{
+					// Get the node index. For performance, call getIndex
+					// directly, instead of creating a new node object.
+					address.unshift( this.getIndex.call( { $ : node }, normalized ) );
+				}
+
+				node = parentNode;
+			}
+
+			return address;
+		},
+
+		/**
+		 * Gets the document containing this element.
+		 * @returns {CKEDITOR.dom.document} The document.
+		 * @example
+		 * var element = CKEDITOR.document.getById( 'example' );
+		 * alert( <strong>element.getDocument().equals( CKEDITOR.document )</strong> );  // "true"
+		 */
+		getDocument : function()
+		{
+			return new CKEDITOR.dom.document( this.$.ownerDocument || this.$.parentNode.ownerDocument );
+		},
+
+		getIndex : function( normalized )
+		{
+			// Attention: getAddress depends on this.$
+
+			var current = this.$,
+				index = 0;
+
+			while ( ( current = current.previousSibling ) )
+			{
+				// When normalizing, do not count it if this is an
+				// empty text node or if it's a text node following another one.
+				if ( normalized && current.nodeType == 3 &&
+					 ( !current.nodeValue.length ||
+					   ( current.previousSibling && current.previousSibling.nodeType == 3 ) ) )
+				{
+					continue;
+				}
+
+				index++;
+			}
+
+			return index;
+		},
+
+		getNextSourceNode : function( startFromSibling, nodeType, guard )
+		{
+			// If "guard" is a node, transform it in a function.
+			if ( guard && !guard.call )
+			{
+				var guardNode = guard;
+				guard = function( node )
+				{
+					return !node.equals( guardNode );
+				};
+			}
+
+			var node = ( !startFromSibling && this.getFirst && this.getFirst() ),
+				parent;
+
+			// Guarding when we're skipping the current element( no children or 'startFromSibling' ).
+			// send the 'moving out' signal even we don't actually dive into.
+			if ( !node )
+			{
+				if ( this.type == CKEDITOR.NODE_ELEMENT && guard && guard( this, true ) === false )
+					return null;
+				node = this.getNext();
+			}
+
+			while ( !node && ( parent = ( parent || this ).getParent() ) )
+			{
+				// The guard check sends the "true" paramenter to indicate that
+				// we are moving "out" of the element.
+				if ( guard && guard( parent, true ) === false )
+					return null;
+
+				node = parent.getNext();
+			}
+
+			if ( !node )
+				return null;
+
+			if ( guard && guard( node ) === false )
+				return null;
+
+			if ( nodeType && nodeType != node.type )
+				return node.getNextSourceNode( false, nodeType, guard );
+
+			return node;
+		},
+
+		getPreviousSourceNode : function( startFromSibling, nodeType, guard )
+		{
+			if ( guard && !guard.call )
+			{
+				var guardNode = guard;
+				guard = function( node )
+				{
+					return !node.equals( guardNode );
+				};
+			}
+
+			var node = ( !startFromSibling && this.getLast && this.getLast() ),
+				parent;
+
+			// Guarding when we're skipping the current element( no children or 'startFromSibling' ).
+			// send the 'moving out' signal even we don't actually dive into.
+			if ( !node )
+			{
+				if ( this.type == CKEDITOR.NODE_ELEMENT && guard && guard( this, true ) === false )
+					return null;
+				node = this.getPrevious();
+			}
+
+			while ( !node && ( parent = ( parent || this ).getParent() ) )
+			{
+				// The guard check sends the "true" paramenter to indicate that
+				// we are moving "out" of the element.
+				if ( guard && guard( parent, true ) === false )
+					return null;
+
+				node = parent.getPrevious();
+			}
+
+			if ( !node )
+				return null;
+
+			if ( guard && guard( node ) === false )
+				return null;
+
+			if ( nodeType && node.type != nodeType )
+				return node.getPreviousSourceNode( false, nodeType, guard );
+
+			return node;
+		},
+
+		getPrevious : function( evaluator )
+		{
+			var previous = this.$, retval;
+			do
+			{
+				previous = previous.previousSibling;
+				retval = previous && new CKEDITOR.dom.node( previous );
+			}
+			while ( retval && evaluator && !evaluator( retval ) )
+			return retval;
+		},
+
+		/**
+		 * Gets the node that follows this element in its parent's child list.
+		 * @param {Function} evaluator Filtering the result node.
+		 * @returns {CKEDITOR.dom.node} The next node or null if not available.
+		 * @example
+		 * var element = CKEDITOR.dom.element.createFromHtml( '&lt;div&gt;&lt;b&gt;Example&lt;/b&gt; &lt;i&gt;next&lt;/i&gt;&lt;/div&gt;' );
+		 * var first = <strong>element.getFirst().getNext()</strong>;
+		 * alert( first.getName() );  // "i"
+		 */
+		getNext : function( evaluator )
+		{
+			var next = this.$, retval;
+			do
+			{
+				next = next.nextSibling;
+				retval = next && new CKEDITOR.dom.node( next );
+			}
+			while ( retval && evaluator && !evaluator( retval ) )
+			return retval;
+		},
+
+		/**
+		 * Gets the parent element for this node.
+		 * @returns {CKEDITOR.dom.element} The parent element.
+		 * @example
+		 * var node = editor.document.getBody().getFirst();
+		 * var parent = node.<strong>getParent()</strong>;
+		 * alert( node.getName() );  // "body"
+		 */
+		getParent : function()
+		{
+			var parent = this.$.parentNode;
+			return ( parent && parent.nodeType == 1 ) ? new CKEDITOR.dom.node( parent ) : null;
+		},
+
+		getParents : function( closerFirst )
+		{
+			var node = this;
+			var parents = [];
+
+			do
+			{
+				parents[  closerFirst ? 'push' : 'unshift' ]( node );
+			}
+			while ( ( node = node.getParent() ) )
+
+			return parents;
+		},
+
+		getCommonAncestor : function( node )
+		{
+			if ( node.equals( this ) )
+				return this;
+
+			if ( node.contains && node.contains( this ) )
+				return node;
+
+			var start = this.contains ? this : this.getParent();
+
+			do
+			{
+				if ( start.contains( node ) )
+					return start;
+			}
+			while ( ( start = start.getParent() ) );
+
+			return null;
+		},
+
+		getPosition : function( otherNode )
+		{
+			var $ = this.$;
+			var $other = otherNode.$;
+
+			if ( $.compareDocumentPosition )
+				return $.compareDocumentPosition( $other );
+
+			// IE and Safari have no support for compareDocumentPosition.
+
+			if ( $ == $other )
+				return CKEDITOR.POSITION_IDENTICAL;
+
+			// Only element nodes support contains and sourceIndex.
+			if ( this.type == CKEDITOR.NODE_ELEMENT && otherNode.type == CKEDITOR.NODE_ELEMENT )
+			{
+				if ( $.contains )
+				{
+					if ( $.contains( $other ) )
+						return CKEDITOR.POSITION_CONTAINS + CKEDITOR.POSITION_PRECEDING;
+
+					if ( $other.contains( $ ) )
+						return CKEDITOR.POSITION_IS_CONTAINED + CKEDITOR.POSITION_FOLLOWING;
+				}
+
+				if ( 'sourceIndex' in $ )
+				{
+					return ( $.sourceIndex < 0 || $other.sourceIndex < 0 ) ? CKEDITOR.POSITION_DISCONNECTED :
+						( $.sourceIndex < $other.sourceIndex ) ? CKEDITOR.POSITION_PRECEDING :
+						CKEDITOR.POSITION_FOLLOWING;
+				}
+			}
+
+			// For nodes that don't support compareDocumentPosition, contains
+			// or sourceIndex, their "address" is compared.
+
+			var addressOfThis = this.getAddress(),
+				addressOfOther = otherNode.getAddress(),
+				minLevel = Math.min( addressOfThis.length, addressOfOther.length );
+
+				// Determinate preceed/follow relationship.
+				for ( var i = 0 ; i <= minLevel - 1 ; i++ )
+ 				{
+					if ( addressOfThis[ i ] != addressOfOther[ i ] )
+					{
+						if ( i < minLevel )
+						{
+							return addressOfThis[ i ] < addressOfOther[ i ] ?
+						            CKEDITOR.POSITION_PRECEDING : CKEDITOR.POSITION_FOLLOWING;
+						}
+						break;
+					}
+ 				}
+
+				// Determinate contains/contained relationship.
+				return ( addressOfThis.length < addressOfOther.length ) ?
+							CKEDITOR.POSITION_CONTAINS + CKEDITOR.POSITION_PRECEDING :
+							CKEDITOR.POSITION_IS_CONTAINED + CKEDITOR.POSITION_FOLLOWING;
+		},
+
+		/**
+		 * Gets the closest ancestor node of this node, specified by its name.
+		 * @param {String} reference The name of the ancestor node to search or
+		 *		an object with the node names to search for.
+		 * @param {Boolean} [includeSelf] Whether to include the current
+		 *		node in the search.
+		 * @returns {CKEDITOR.dom.node} The located ancestor node or null if not found.
+		 * @since 3.6.1
+		 * @example
+		 * // Suppose we have the following HTML structure:
+		 * // &lt;div id="outer"&gt;&lt;div id="inner"&gt;&lt;p&gt;&lt;b&gt;Some text&lt;/b&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;
+		 * // If node == &lt;b&gt;
+		 * ascendant = node.getAscendant( 'div' );      // ascendant == &lt;div id="inner"&gt
+		 * ascendant = node.getAscendant( 'b' );        // ascendant == null
+		 * ascendant = node.getAscendant( 'b', true );  // ascendant == &lt;b&gt;
+		 * ascendant = node.getAscendant( { div: 1, p: 1} );      // Searches for the first 'div' or 'p': ascendant == &lt;div id="inner"&gt
+		 */
+		getAscendant : function( reference, includeSelf )
+		{
+			var $ = this.$,
+				name;
+
+			if ( !includeSelf )
+				$ = $.parentNode;
+
+			while ( $ )
+			{
+				if ( $.nodeName && ( name = $.nodeName.toLowerCase(), ( typeof reference == 'string' ? name == reference : name in reference ) ) )
+					return new CKEDITOR.dom.node( $ );
+
+				$ = $.parentNode;
+			}
+			return null;
+		},
+
+		hasAscendant : function( name, includeSelf )
+		{
+			var $ = this.$;
+
+			if ( !includeSelf )
+				$ = $.parentNode;
+
+			while ( $ )
+			{
+				if ( $.nodeName && $.nodeName.toLowerCase() == name )
+					return true;
+
+				$ = $.parentNode;
+			}
+			return false;
+		},
+
+		move : function( target, toStart )
+		{
+			target.append( this.remove(), toStart );
+		},
+
+		/**
+		 * Removes this node from the document DOM.
+		 * @param {Boolean} [preserveChildren] Indicates that the children
+		 *		elements must remain in the document, removing only the outer
+		 *		tags.
+		 * @example
+		 * var element = CKEDITOR.dom.element.getById( 'MyElement' );
+		 * <strong>element.remove()</strong>;
+		 */
+		remove : function( preserveChildren )
+		{
+			var $ = this.$;
+			var parent = $.parentNode;
+
+			if ( parent )
+			{
+				if ( preserveChildren )
+				{
+					// Move all children before the node.
+					for ( var child ; ( child = $.firstChild ) ; )
+					{
+						parent.insertBefore( $.removeChild( child ), $ );
+					}
+				}
+
+				parent.removeChild( $ );
+			}
+
+			return this;
+		},
+
+		replace : function( nodeToReplace )
+		{
+			this.insertBefore( nodeToReplace );
+			nodeToReplace.remove();
+		},
+
+		trim : function()
+		{
+			this.ltrim();
+			this.rtrim();
+		},
+
+		ltrim : function()
+		{
+			var child;
+			while ( this.getFirst && ( child = this.getFirst() ) )
+			{
+				if ( child.type == CKEDITOR.NODE_TEXT )
+				{
+					var trimmed = CKEDITOR.tools.ltrim( child.getText() ),
+						originalLength = child.getLength();
+
+					if ( !trimmed )
+					{
+						child.remove();
+						continue;
+					}
+					else if ( trimmed.length < originalLength )
+					{
+						child.split( originalLength - trimmed.length );
+
+						// IE BUG: child.remove() may raise JavaScript errors here. (#81)
+						this.$.removeChild( this.$.firstChild );
+					}
+				}
+				break;
+			}
+		},
+
+		rtrim : function()
+		{
+			var child;
+			while ( this.getLast && ( child = this.getLast() ) )
+			{
+				if ( child.type == CKEDITOR.NODE_TEXT )
+				{
+					var trimmed = CKEDITOR.tools.rtrim( child.getText() ),
+						originalLength = child.getLength();
+
+					if ( !trimmed )
+					{
+						child.remove();
+						continue;
+					}
+					else if ( trimmed.length < originalLength )
+					{
+						child.split( trimmed.length );
+
+						// IE BUG: child.getNext().remove() may raise JavaScript errors here.
+						// (#81)
+						this.$.lastChild.parentNode.removeChild( this.$.lastChild );
+					}
+				}
+				break;
+			}
+
+			if ( !CKEDITOR.env.ie && !CKEDITOR.env.opera )
+			{
+				child = this.$.lastChild;
+
+				if ( child && child.type == 1 && child.nodeName.toLowerCase() == 'br' )
+				{
+					// Use "eChildNode.parentNode" instead of "node" to avoid IE bug (#324).
+					child.parentNode.removeChild( child ) ;
+				}
+			}
+		},
+
+		/**
+		 * Checks if this node is read-only (should not be changed). Additionally
+		 * it returns the element that defines the read-only state of this node
+		 * (if present). It may be the node itself or any of its parent
+		 * nodes.
+		 * @returns {CKEDITOR.dom.element|Boolean} An element containing
+		 *		read-only attributes or "false" if none is found.
+		 * @since 3.5
+		 * @example
+		 * // For the following HTML:
+		 * // &lt;div contenteditable="false"&gt;Some &lt;b&gt;text&lt;/b&gt;&lt;/div&gt;
+		 *
+		 * // If "ele" is the above &lt;div&gt;
+		 * ele.isReadOnly();  // the &lt;div&gt; element
+		 *
+		 * // If "ele" is the above &lt;b&gt;
+		 * ele.isReadOnly();  // the &lt;div&gt; element
+		 */
+		isReadOnly : function()
+		{
+			var current = this;
+			while( current )
+			{
+				if ( current.type == CKEDITOR.NODE_ELEMENT )
+				{
+					if ( current.is( 'body' ) || !!current.data( 'cke-editable' ) )
+						break;
+
+					if ( current.getAttribute( 'contentEditable' ) == 'false' )
+						return current;
+					else if ( current.getAttribute( 'contentEditable' ) == 'true' )
+						break;
+				}
+				current = current.getParent();
+			}
+
+			return false;
+		}
+	}
+);