var runtil = /Until$/, rparentsprev = /^(?:parents|prevUntil|prevAll)/, // Note: This RegExp should be improved, or likely pulled from Sizzle rmultiselector = /,/, isSimple = /^.[^:#\[\.,]*$/, slice = Array.prototype.slice; 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; } } }); }, not: function( selector ) { return this.pushStack( winnow(this, selector, false), "not", selector); }, filter: function( selector ) { return this.pushStack( winnow(this, selector, true), "filter", selector ); }, is: function( selector ) { return !!selector && jQuery.filter( selector, this ).length > 0; }, closest: function( selectors, context ) { if ( jQuery.isArray( selectors ) ) { var ret = [], cur = this[0], match, matches = {}, selector, level = 1; 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, level: level }); } } cur = cur.parentNode; level++; } } 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; }); }, // Determine the position of an element within // the matched set of elements index: function( elem ) { if ( !elem || typeof elem === "string" ) { return jQuery.inArray( this[0], // If it receives a string, the selector is used // If it receives nothing, the siblings are used elem ? jQuery( elem ) : this.parent().children() ); } // Locate the position of the desired element return jQuery.inArray( // If it receives a jQuery object, the first element is used elem.jquery ? elem[0] : elem, this ); }, 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( isDisconnected( set[0] ) || isDisconnected( all[0] ) ? all : jQuery.unique( all ) ); }, andSelf: function() { return this.add( this.prevObject ); } }); // A painfully simple check to see if an element is disconnected // from a document (should be improved, where feasible). function isDisconnected( node ) { return !node || !node.parentNode || node.parentNode.nodeType === 11; } jQuery.each({ parent: function( elem ) { var parent = elem.parentNode; return parent && parent.nodeType !== 11 ? parent : null; }, 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 || cur.nodeType !== 1 || !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; } }); // Implement the identical functionality for filter and not function winnow( elements, qualifier, keep ) { if ( jQuery.isFunction( qualifier ) ) { return jQuery.grep(elements, function( elem, i ) { var retVal = !!qualifier.call( elem, i, elem ); return retVal === 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, filtered ); } } return jQuery.grep(elements, function( elem, i ) { return (jQuery.inArray( elem, qualifier ) >= 0) === keep; }); }