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jQuery.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.multiFilter(qualifier, filtered, !keep);
else qualifier = jQuery.multiFilter( 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;
},
not: function( selector ) {
return this.pushStack( jQuery.winnow(this, selector, false), "not", selector);
},
filter: function( selector ) {
return this.pushStack( jQuery.winnow(this, selector, true), "filter", selector );
},
closest: function( selector ) {
var pos = jQuery.expr.match.POS.test( selector ) ? jQuery(selector) : null,
closer = 0,
context = this.context;
return this.map(function(){
var cur = this;
while ( cur && cur.ownerDocument && cur !== context ) {
if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selector) ) {
jQuery.data(cur, "closest", closer);
return cur;
}
cur = cur.parentNode;
closer++;
}
});
},
add: function( selector ) {
return this.pushStack( jQuery.unique( jQuery.merge(
this.get(),
typeof selector === "string" ?
jQuery( selector ) :
jQuery.makeArray( selector )
)));
},
eq: function( i ) {
return this.slice( i, +i + 1 );
},
slice: function() {
return this.pushStack( Array.prototype.slice.apply( this, arguments ),
"slice", Array.prototype.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");},
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");},
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( selector ) {
var ret = jQuery.map( this, fn );
if ( selector && typeof selector == "string" )
ret = jQuery.multiFilter( selector, ret );
return this.pushStack( jQuery.unique( ret ), name, selector );
};
});
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