var runtil = /Until$/, rparentsprev = /^(?:parents|prevUntil|prevAll)/, // Note: This RegExp should be improved, or likely pulled from Sizzle rmultiselector = /,/, slice = Array.prototype.slice; // Implement the identical functionality for filter and not var winnow = function( elements, qualifier, keep ) { if ( jQuery.isFunction( qualifier ) ) { return jQuery.grep(elements, function(elem, i) { return !!qualifier.call( elem, i ) === keep; }); } else if ( qualifier.nodeType ) { return jQuery.grep(elements, function(elem, i) { return (elem === qualifier) === keep; }); } else if ( typeof qualifier === "string" ) { var filtered = jQuery.grep(elements, function(elem) { return elem.nodeType === 1; }); if ( isSimple.test( qualifier ) ) { return jQuery.filter(qualifier, filtered, !keep); } else { qualifier = jQuery.filter( qualifier, elements ); } } return jQuery.grep(elements, function(elem, i) { return (jQuery.inArray( elem, qualifier ) >= 0) === keep; }); }; jQuery.fn.extend({ find: function( selector ) { var ret = this.pushStack( "", "find", selector ), length = 0; for ( var i = 0, l = this.length; i < l; i++ ) { length = ret.length; jQuery.find( selector, this[i], ret ); if ( i > 0 ) { // Make sure that the results are unique for ( var n = length; n < ret.length; n++ ) { for ( var r = 0; r < length; r++ ) { if ( ret[r] === ret[n] ) { ret.splice(n--, 1); break; } } } } } return ret; }, has: function( target ) { var targets = jQuery( target ); return this.filter(function() { for ( var i = 0, l = targets.length; i < l; i++ ) { if ( jQuery.contains( this, targets[i] ) ) { return true; } } }); }, contains: function( target ) { return this.has( target ).length > 0; }, not: function( selector ) { return this.pushStack( winnow(this, selector, false), "not", selector); }, filter: function( selector ) { return this.pushStack( winnow(this, selector, true), "filter", selector ); }, closest: function( selectors, context ) { if ( jQuery.isArray( selectors ) ) { var ret = [], cur = this[0], match, matches = {}, selector; if ( cur && selectors.length ) { for ( var i = 0, l = selectors.length; i < l; i++ ) { selector = selectors[i]; if ( !matches[selector] ) { matches[selector] = jQuery.expr.match.POS.test( selector ) ? jQuery( selector, context || this.context ) : selector; } } while ( cur && cur.ownerDocument && cur !== context ) { for ( selector in matches ) { match = matches[selector]; if ( match.jquery ? match.index(cur) > -1 : jQuery(cur).is(match) ) { ret.push({ selector: selector, elem: cur }); delete matches[selector]; } } cur = cur.parentNode; } } return ret; } var pos = jQuery.expr.match.POS.test( selectors ) ? jQuery( selectors, context || this.context ) : null; return this.map(function(i, cur){ while ( cur && cur.ownerDocument && cur !== context ) { if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selectors) ) { return cur; } cur = cur.parentNode; } return null; }); }, add: function( selector, context ) { var set = typeof selector === "string" ? jQuery( selector, context || this.context ) : jQuery.makeArray( selector ), all = jQuery.merge( this.get(), set ); return this.pushStack( set[0] && (set[0].setInterval || set[0].nodeType === 9 || (set[0].parentNode && set[0].parentNode.nodeType !== 11)) ? jQuery.unique( all ) : all ); }, eq: function( i ) { return i === -1 ? this.slice( i ) : this.slice( i, +i + 1 ); }, first: function() { return this.eq( 0 ); }, last: function() { return this.eq( -1 ); }, slice: function() { return this.pushStack( slice.apply( this, arguments ), "slice", slice.call(arguments).join(",") ); }, map: function( callback ) { return this.pushStack( jQuery.map(this, function(elem, i){ return callback.call( elem, i, elem ); })); }, andSelf: function() { return this.add( this.prevObject ); }, end: function() { return this.prevObject || jQuery(null); } }); jQuery.each({ parent: function(elem){return elem.parentNode;}, parents: function(elem){return jQuery.dir(elem,"parentNode");}, parentsUntil: function(elem,i,until){return jQuery.dir(elem,"parentNode",until);}, next: function(elem){return jQuery.nth(elem,2,"nextSibling");}, prev: function(elem){return jQuery.nth(elem,2,"previousSibling");}, nextAll: function(elem){return jQuery.dir(elem,"nextSibling");}, prevAll: function(elem){return jQuery.dir(elem,"previousSibling");}, nextUntil: function(elem,i,until){return jQuery.dir(elem,"nextSibling",until);}, prevUntil: function(elem,i,until){return jQuery.dir(elem,"previousSibling",until);}, siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);}, children: function(elem){return jQuery.sibling(elem.firstChild);}, contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);} }, function(name, fn){ jQuery.fn[ name ] = function( until, selector ) { var ret = jQuery.map( this, fn, until ); if ( !runtil.test( name ) ) { selector = until; } if ( selector && typeof selector === "string" ) { ret = jQuery.filter( selector, ret ); } ret = this.length > 1 ? jQuery.unique( ret ) : ret; if ( (this.length > 1 || rmultiselector.test( selector )) && rparentsprev.test( name ) ) { ret = ret.reverse(); } return this.pushStack( ret, name, slice.call(arguments).join(",") ); }; }); jQuery.extend({ filter: function( expr, elems, not ) { if ( not ) { expr = ":not(" + expr + ")"; } return jQuery.find.matches(expr, elems); }, dir: function( elem, dir, until ) { var matched = [], cur = elem[dir]; while ( cur && cur.nodeType !== 9 && (until === undefined || !jQuery( cur ).is( until )) ) { if ( cur.nodeType === 1 ) { matched.push( cur ); } cur = cur[dir]; } return matched; }, nth: function( cur, result, dir, elem ) { result = result || 1; var num = 0; for ( ; cur; cur = cur[dir] ) { if ( cur.nodeType === 1 && ++num === result ) { break; } } return cur; }, sibling: function( n, elem ) { var r = []; for ( ; n; n = n.nextSibling ) { if ( n.nodeType === 1 && n !== elem ) { r.push( n ); } } return r; } });