7 ], function( jQuery, indexOf, isFunction, rneedsContext ) {
11 // Implement the identical functionality for filter and not
12 function winnow( elements, qualifier, not ) {
13 if ( isFunction( qualifier ) ) {
14 return jQuery.grep( elements, function( elem, i ) {
15 return !!qualifier.call( elem, i, elem ) !== not;
20 if ( qualifier.nodeType ) {
21 return jQuery.grep( elements, function( elem ) {
22 return ( elem === qualifier ) !== not;
26 // Arraylike of elements (jQuery, arguments, Array)
27 if ( typeof qualifier !== "string" ) {
28 return jQuery.grep( elements, function( elem ) {
29 return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
33 // Filtered directly for both simple and complex selectors
34 return jQuery.filter( qualifier, elements, not );
37 jQuery.filter = function( expr, elems, not ) {
38 var elem = elems[ 0 ];
41 expr = ":not(" + expr + ")";
44 if ( elems.length === 1 && elem.nodeType === 1 ) {
45 return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];
48 return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
49 return elem.nodeType === 1;
54 find: function( selector ) {
59 if ( typeof selector !== "string" ) {
60 return this.pushStack( jQuery( selector ).filter( function() {
61 for ( i = 0; i < len; i++ ) {
62 if ( jQuery.contains( self[ i ], this ) ) {
69 ret = this.pushStack( [] );
71 for ( i = 0; i < len; i++ ) {
72 jQuery.find( selector, self[ i ], ret );
75 return len > 1 ? jQuery.uniqueSort( ret ) : ret;
77 filter: function( selector ) {
78 return this.pushStack( winnow( this, selector || [], false ) );
80 not: function( selector ) {
81 return this.pushStack( winnow( this, selector || [], true ) );
83 is: function( selector ) {
87 // If this is a positional/relative selector, check membership in the returned set
88 // so $("p:first").is("p:last") won't return true for a doc with two "p".
89 typeof selector === "string" && rneedsContext.test( selector ) ?