mirror of
https://github.com/jquery/jquery.git
synced 2024-11-23 02:54:22 +00:00
324 lines
7.9 KiB
JavaScript
324 lines
7.9 KiB
JavaScript
(function( jQuery ) {
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var runtil = /Until$/,
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rparentsprev = /^(?:parents|prevUntil|prevAll)/,
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// Note: This RegExp should be improved, or likely pulled from Sizzle
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rmultiselector = /,/,
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isSimple = /^.[^:#\[\.,]*$/,
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slice = Array.prototype.slice,
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POS = jQuery.expr.match.globalPOS,
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// methods guaranteed to produce a unique set when starting from a unique set
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guaranteedUnique = {
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children: true,
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contents: true,
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next: true,
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prev: true
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};
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jQuery.fn.extend({
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find: function( selector ) {
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var self = this,
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i, l;
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if ( typeof selector !== "string" ) {
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return jQuery( selector ).filter(function() {
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for ( i = 0, l = self.length; i < l; i++ ) {
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if ( jQuery.contains( self[ i ], this ) ) {
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return true;
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}
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}
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});
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}
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var ret = this.pushStack( "", "find", selector ),
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length, n, r;
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for ( i = 0, l = this.length; i < l; i++ ) {
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length = ret.length;
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jQuery.find( selector, this[i], ret );
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if ( i > 0 ) {
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// Make sure that the results are unique
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for ( n = length; n < ret.length; n++ ) {
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for ( r = 0; r < length; r++ ) {
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if ( ret[r] === ret[n] ) {
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ret.splice(n--, 1);
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break;
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}
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}
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}
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}
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}
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return ret;
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},
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has: function( target ) {
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var targets = jQuery( target, this );
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return this.filter(function() {
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for ( var i = 0, l = targets.length; i < l; i++ ) {
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if ( jQuery.contains( this, targets[i] ) ) {
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return true;
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}
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}
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});
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},
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not: function( selector ) {
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return this.pushStack( winnow(this, selector, false), "not", selector);
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},
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filter: function( selector ) {
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return this.pushStack( winnow(this, selector, true), "filter", selector );
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},
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is: function( selector ) {
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return !!selector && (
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typeof selector === "string" ?
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// If this is a positional selector, check membership in the returned set
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// so $("p:first").is("p:last") won't return true for a doc with two "p".
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POS.test( selector ) ?
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jQuery( selector, this.context ).index( this[0] ) >= 0 :
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jQuery.filter( selector, this ).length > 0 :
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this.filter( selector ).length > 0 );
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},
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closest: function( selectors, context ) {
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var ret = [], i, l, cur = this[0];
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// Array (deprecated as of jQuery 1.7)
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if ( jQuery.isArray( selectors ) ) {
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var level = 1;
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while ( cur && cur.ownerDocument && cur !== context ) {
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for ( i = 0; i < selectors.length; i++ ) {
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if ( jQuery( cur ).is( selectors[ i ] ) ) {
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ret.push({ selector: selectors[ i ], elem: cur, level: level });
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}
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}
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cur = cur.parentNode;
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level++;
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}
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return ret;
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}
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// String
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var pos = POS.test( selectors ) || typeof selectors !== "string" ?
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jQuery( selectors, context || this.context ) :
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0;
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for ( i = 0, l = this.length; i < l; i++ ) {
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cur = this[i];
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while ( cur ) {
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if ( pos ? pos.index(cur) > -1 : jQuery.find.matchesSelector(cur, selectors) ) {
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ret.push( cur );
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break;
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} else {
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cur = cur.parentNode;
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if ( !cur || !cur.ownerDocument || cur === context || cur.nodeType === 11 ) {
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break;
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}
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}
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}
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}
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ret = ret.length > 1 ? jQuery.unique( ret ) : ret;
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return this.pushStack( ret, "closest", selectors );
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},
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// Determine the position of an element within
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// the matched set of elements
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index: function( elem ) {
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// No argument, return index in parent
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if ( !elem ) {
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return ( this[0] && this[0].parentNode ) ? this.prevAll().length : -1;
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}
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// index in selector
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if ( typeof elem === "string" ) {
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return jQuery.inArray( this[0], jQuery( elem ) );
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}
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// Locate the position of the desired element
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return jQuery.inArray(
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// If it receives a jQuery object, the first element is used
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elem.jquery ? elem[0] : elem, this );
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},
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add: function( selector, context ) {
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var set = typeof selector === "string" ?
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jQuery( selector, context ) :
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jQuery.makeArray( selector && selector.nodeType ? [ selector ] : selector ),
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all = jQuery.merge( this.get(), set );
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return this.pushStack( isDisconnected( set[0] ) || isDisconnected( all[0] ) ?
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all :
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jQuery.unique( all ) );
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},
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andSelf: function() {
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return this.add( this.prevObject );
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}
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});
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// A painfully simple check to see if an element is disconnected
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// from a document (should be improved, where feasible).
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function isDisconnected( node ) {
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return !node || !node.parentNode || node.parentNode.nodeType === 11;
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}
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jQuery.each({
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parent: function( elem ) {
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var parent = elem.parentNode;
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return parent && parent.nodeType !== 11 ? parent : null;
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},
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parents: function( elem ) {
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return jQuery.dir( elem, "parentNode" );
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},
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parentsUntil: function( elem, i, until ) {
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return jQuery.dir( elem, "parentNode", until );
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},
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next: function( elem ) {
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return jQuery.nth( elem, "nextSibling" );
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},
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prev: function( elem ) {
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return jQuery.nth( elem, "previousSibling" );
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},
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nextAll: function( elem ) {
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return jQuery.dir( elem, "nextSibling" );
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},
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prevAll: function( elem ) {
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return jQuery.dir( elem, "previousSibling" );
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},
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nextUntil: function( elem, i, until ) {
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return jQuery.dir( elem, "nextSibling", until );
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},
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prevUntil: function( elem, i, until ) {
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return jQuery.dir( elem, "previousSibling", until );
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},
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siblings: function( elem ) {
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return jQuery.sibling( ( elem.parentNode || {} ).firstChild, elem );
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},
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children: function( elem ) {
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return jQuery.sibling( elem.firstChild );
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},
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contents: function( elem ) {
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return jQuery.nodeName( elem, "iframe" ) ?
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elem.contentDocument || elem.contentWindow.document :
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jQuery.makeArray( elem.childNodes );
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}
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}, function( name, fn ) {
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jQuery.fn[ name ] = function( until, selector ) {
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var ret = jQuery.map( this, fn, until );
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if ( !runtil.test( name ) ) {
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selector = until;
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}
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if ( selector && typeof selector === "string" ) {
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ret = jQuery.filter( selector, ret );
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}
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ret = this.length > 1 && !guaranteedUnique[ name ] ? jQuery.unique( ret ) : ret;
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if ( (this.length > 1 || rmultiselector.test( selector )) && rparentsprev.test( name ) ) {
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ret = ret.reverse();
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}
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return this.pushStack( ret, name, slice.call( arguments ).join(",") );
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};
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});
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jQuery.extend({
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filter: function( expr, elems, not ) {
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if ( not ) {
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expr = ":not(" + expr + ")";
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}
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return elems.length === 1 ?
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jQuery.find.matchesSelector(elems[0], expr) ? [ elems[0] ] : [] :
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jQuery.find.matches(expr, elems);
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},
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dir: function( elem, dir, until ) {
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var matched = [],
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cur = elem[ dir ];
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while ( cur && cur.nodeType !== 9 && (until === undefined || cur.nodeType !== 1 || !jQuery( cur ).is( until )) ) {
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if ( cur.nodeType === 1 ) {
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matched.push( cur );
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}
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cur = cur[dir];
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}
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return matched;
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},
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nth: function( cur, dir ) {
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var num = 0;
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for ( ; cur; cur = cur[dir] ) {
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if ( cur.nodeType === 1 && num++ === 1 ) {
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break;
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}
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}
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return cur;
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},
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sibling: function( n, elem ) {
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var r = [];
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for ( ; n; n = n.nextSibling ) {
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if ( n.nodeType === 1 && n !== elem ) {
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r.push( n );
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}
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}
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return r;
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}
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});
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// Implement the identical functionality for filter and not
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function winnow( elements, qualifier, keep ) {
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// Can't pass null or undefined to indexOf in Firefox 4
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// Set to 0 to skip string check
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qualifier = qualifier || 0;
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if ( jQuery.isFunction( qualifier ) ) {
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return jQuery.grep(elements, function( elem, i ) {
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var retVal = !!qualifier.call( elem, i, elem );
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return retVal === keep;
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});
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} else if ( qualifier.nodeType ) {
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return jQuery.grep(elements, function( elem, i ) {
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return ( elem === qualifier ) === keep;
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});
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} else if ( typeof qualifier === "string" ) {
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var filtered = jQuery.grep(elements, function( elem ) {
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return elem.nodeType === 1;
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});
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if ( isSimple.test( qualifier ) ) {
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return jQuery.filter(qualifier, filtered, !keep);
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} else {
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qualifier = jQuery.filter( qualifier, filtered );
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}
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}
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return jQuery.grep(elements, function( elem, i ) {
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return ( jQuery.inArray( elem, qualifier ) >= 0 ) === keep;
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});
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}
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})( jQuery );
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