6 ], function( jQuery, indexOf, rneedsContext ) {
8 var risSimple = /^.[^:#\[\.,]*$/;
10 // Implement the identical functionality for filter and not
11 function winnow( elements, qualifier, not ) {
12 if ( jQuery.isFunction( qualifier ) ) {
13 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;
27 if ( typeof qualifier === "string" ) {
28 if ( risSimple.test( qualifier ) ) {
29 return jQuery.filter( qualifier, elements, not );
32 qualifier = jQuery.filter( qualifier, elements );
35 return jQuery.grep( elements, function( elem ) {
36 return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
40 jQuery.filter = function( expr, elems, not ) {
41 var elem = elems[ 0 ];
44 expr = ":not(" + expr + ")";
47 return elems.length === 1 && elem.nodeType === 1 ?
48 jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [] :
49 jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
50 return elem.nodeType === 1;
55 find: function( selector ) {
61 if ( typeof selector !== "string" ) {
62 return this.pushStack( jQuery( selector ).filter( function() {
63 for ( i = 0; i < len; i++ ) {
64 if ( jQuery.contains( self[ i ], this ) ) {
71 for ( i = 0; i < len; i++ ) {
72 jQuery.find( selector, self[ i ], ret );
75 // Needed because $( selector, context ) becomes $( context ).find( selector )
76 ret = this.pushStack( len > 1 ? jQuery.unique( ret ) : ret );
77 ret.selector = this.selector ? this.selector + " " + selector : selector;
80 filter: function( selector ) {
81 return this.pushStack( winnow( this, selector || [], false ) );
83 not: function( selector ) {
84 return this.pushStack( winnow( this, selector || [], true ) );
86 is: function( selector ) {
90 // If this is a positional/relative selector, check membership in the returned set
91 // so $("p:first").is("p:last") won't return true for a doc with two "p".
92 typeof selector === "string" && rneedsContext.test( selector ) ?