public/ckeditor/4.4dev/core/dom/range.js
function() {
			var walkerRange = this.clone();

			// Optimize and analyze the range to avoid DOM destructive nature of walker. (#5780)
			walkerRange.optimize();
			if ( walkerRange.startContainer.type != CKEDITOR.NODE_ELEMENT || walkerRange.endContainer.type != CKEDITOR.NODE_ELEMENT )
				return null;

			var walker = new CKEDITOR.dom.walker( walkerRange ),
				isNotBookmarks = CKEDITOR.dom.walker.bookmark( false, true ),
				isNotWhitespaces = CKEDITOR.dom.walker.whitespaces( true );

			walker.evaluator = function( node ) {
				return isNotWhitespaces( node ) && isNotBookmarks( node );
			};
			var node = walker.next();
			walker.reset();
			return node && node.equals( walker.previous() ) ? node : null;
		}
function() {
			var walkerRange = this.clone();

			// Optimize and analyze the range to avoid DOM destructive nature of walker. (#5780)
			walkerRange.optimize();
			if ( walkerRange.startContainer.type != CKEDITOR.NODE_ELEMENT || walkerRange.endContainer.type != CKEDITOR.NODE_ELEMENT )
				return null;

			var walker = new CKEDITOR.dom.walker( walkerRange ),
				isNotBookmarks = CKEDITOR.dom.walker.bookmark( false, true ),
				isNotWhitespaces = CKEDITOR.dom.walker.whitespaces( true );

			walker.evaluator = function( node ) {
				return isNotWhitespaces( node ) && isNotBookmarks( node );
			};
			var node = walker.next();
			walker.reset();
			return node && node.equals( walker.previous() ) ? node : null;
		}
function ( ) { var walkerRange = this . clone ( ) ; // Optimize and analyze the range to avoid DOM destructive nature of walker. (#5780) walkerRange . optimize ( ) ; if ( walkerRange . startContainer . type != CKEDITOR . NODE_ELEMENT || walkerRange . endContainer . type != CKEDITOR . NODE_ELEMENT ) return null ; var walker = new CKEDITOR . dom . walker ( walkerRange ) , isNotBookmarks = CKEDITOR . dom . walker . bookmark ( false , true ) , isNotWhitespaces = CKEDITOR . dom . walker . whitespaces ( true ) ; walker . evaluator = function ( node ) { return isNotWhitespaces ( node ) && isNotBookmarks ( node ) ; } ; var node = walker . next ( ) ; walker . reset ( ) ; return node && node . equals ( walker . previous ( ) ) ? node : null ; }
Get the single node enclosed within the range if there's one.

@returns {CKEDITOR.dom.node}
Get the single node enclosed within the range if there s one .