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define( [
"../core",
"../var/indexOf",
"./var/rneedsContext",
"../selector"
], function( jQuery, indexOf, rneedsContext ) {
"use strict";
var risSimple = /^.[^:#\[\.,]*$/;
// Implement the identical functionality for filter and not
function winnow( elements, qualifier, not ) {
if ( jQuery.isFunction( qualifier ) ) {
return jQuery.grep( elements, function( elem, i ) {
return !!qualifier.call( elem, i, elem ) !== not;
} );
}
// Single element
if ( qualifier.nodeType ) {
return jQuery.grep( elements, function( elem ) {
return ( elem === qualifier ) !== not;
} );
}
// Arraylike of elements (jQuery, arguments, Array)
if ( typeof qualifier !== "string" ) {
return jQuery.grep( elements, function( elem ) {
return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
} );
}
// Simple selector that can be filtered directly, removing non-Elements
if ( risSimple.test( qualifier ) ) {
return jQuery.filter( qualifier, elements, not );
}
// Complex selector, compare the two sets, removing non-Elements
qualifier = jQuery.filter( qualifier, elements );
return jQuery.grep( elements, function( elem ) {
return ( indexOf.call( qualifier, elem ) > -1 ) !== not && elem.nodeType === 1;
} );
}
jQuery.filter = function( expr, elems, not ) {
var elem = elems[ 0 ];
if ( not ) {
expr = ":not(" + expr + ")";
}
if ( elems.length === 1 && elem.nodeType === 1 ) {
return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];
}
return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
return elem.nodeType === 1;
} ) );
};
jQuery.fn.extend( {
find: function( selector ) {
var i, ret,
len = this.length,
self = this;
if ( typeof selector !== "string" ) {
return this.pushStack( jQuery( selector ).filter( function() {
for ( i = 0; i < len; i++ ) {
if ( jQuery.contains( self[ i ], this ) ) {
return true;
}
}
} ) );
}
ret = this.pushStack( [] );
for ( i = 0; i < len; i++ ) {
jQuery.find( selector, self[ i ], ret );
}
return len > 1 ? jQuery.uniqueSort( ret ) : ret;
},
filter: function( selector ) {
return this.pushStack( winnow( this, selector || [], false ) );
},
not: function( selector ) {
return this.pushStack( winnow( this, selector || [], true ) );
},
is: function( selector ) {
return !!winnow(
this,
// If this is a positional/relative selector, check membership in the returned set
// so $("p:first").is("p:last") won't return true for a doc with two "p".
typeof selector === "string" && rneedsContext.test( selector ) ?
jQuery( selector ) :
selector || [],
false
).length;
}
} );
} );
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