+jQuery.extend({
+ expr: {
+ "": "m[2]== '*'||a.nodeName.toUpperCase()==m[2].toUpperCase()",
+ "#": "a.getAttribute('id')==m[2]",
+ ":": {
+ // Position Checks
+ lt: "i<m[3]-0",
+ gt: "i>m[3]-0",
+ nth: "m[3]-0==i",
+ eq: "m[3]-0==i",
+ first: "i==0",
+ last: "i==r.length-1",
+ even: "i%2==0",
+ odd: "i%2",
+
+ // Child Checks
+ "nth-child": "jQuery.nth(a.parentNode.firstChild,m[3],'nextSibling')==a",
+ "first-child": "jQuery.nth(a.parentNode.firstChild,1,'nextSibling')==a",
+ "last-child": "jQuery.nth(a.parentNode.lastChild,1,'previousSibling')==a",
+ "only-child": "jQuery.sibling(a.parentNode.firstChild).length==1",
+
+ // Parent Checks
+ parent: "a.firstChild",
+ empty: "!a.firstChild",
+
+ // Text Check
+ contains: "jQuery.fn.text.apply([a]).indexOf(m[3])>=0",
+
+ // Visibility
+ visible: "a.type!='hidden'&&jQuery.css(a,'display')!='none'&&jQuery.css(a,'visibility')!='hidden'",
+ hidden: "a.type=='hidden'||jQuery.css(a,'display')=='none'||jQuery.css(a,'visibility')=='hidden'",
+
+ // Form attributes
+ enabled: "!a.disabled",
+ disabled: "a.disabled",
+ checked: "a.checked",
+ selected: "a.selected || jQuery.attr(a, 'selected')",
+
+ // Form elements
+ text: "a.type=='text'",
+ radio: "a.type=='radio'",
+ checkbox: "a.type=='checkbox'",
+ file: "a.type=='file'",
+ password: "a.type=='password'",
+ submit: "a.type=='submit'",
+ image: "a.type=='image'",
+ reset: "a.type=='reset'",
+ button: "a.type=='button'||a.nodeName=='BUTTON'",
+ input: "/input|select|textarea|button/i.test(a.nodeName)"
+ },
+ ".": "jQuery.className.has(a,m[2])",
+ "@": {
+ "=": "z==m[4]",
+ "!=": "z!=m[4]",
+ "^=": "z && !z.indexOf(m[4])",
+ "$=": "z && z.substr(z.length - m[4].length,m[4].length)==m[4]",
+ "*=": "z && z.indexOf(m[4])>=0",
+ "": "z",
+ _resort: function(m){
+ return ["", m[1], m[3], m[2], m[5]];
+ },
+ _prefix: "z=jQuery.attr(a,m[3]);"
+ },
+ "[": "jQuery.find(m[2],a).length"
+ },
+
+ // The regular expressions that power the parsing engine
+ parse: [
+ // Match: [@value='test'], [@foo]
+ "\\[ *(@)S *([!*$^=]*) *('?\"?)(.*?)\\4 *\\]",
+
+ // Match: [div], [div p]
+ "(\\[)\\s*(.*?)\\s*\\]",
+
+ // Match: :contains('foo')
+ "(:)S\\(\"?'?([^\\)]*?)\"?'?\\)",
+
+ // Match: :even, :last-chlid
+ "([:.#]*)S"
+ ],
+
+ token: [
+ "\\.\\.|/\\.\\.", "a.parentNode",
+ ">|/", "jQuery.sibling(a.firstChild)",
+ "\\+", "jQuery.nth(a,2,'nextSibling')",
+ "~", function(a){
+ var s = jQuery.sibling(a.parentNode.firstChild);
+ return s.slice(0, jQuery.inArray(a,s));
+ }
+ ],
+
+ /**
+ * @name $.find
+ * @type Array<Element>
+ * @private
+ * @cat Core
+ */
+ find: function( t, context ) {
+ // Quickly handle non-string expressions
+ if ( typeof t != "string" )
+ return [ t ];
+
+ // Make sure that the context is a DOM Element
+ if ( context && context.nodeType == undefined )
+ context = null;
+
+ // Set the correct context (if none is provided)
+ context = context || document;
+
+ // Handle the common XPath // expression
+ if ( !t.indexOf("//") ) {
+ context = context.documentElement;
+ t = t.substr(2,t.length);
+
+ // And the / root expression
+ } else if ( !t.indexOf("/") ) {
+ context = context.documentElement;
+ t = t.substr(1,t.length);
+ if ( t.indexOf("/") >= 1 )
+ t = t.substr(t.indexOf("/"),t.length);
+ }
+
+ // Initialize the search
+ var ret = [context], done = [], last = null;
+
+ // Continue while a selector expression exists, and while
+ // we're no longer looping upon ourselves
+ while ( t && last != t ) {
+ var r = [];
+ last = t;
+
+ t = jQuery.trim(t).replace( /^\/\//i, "" );
+
+ var foundToken = false;
+
+ // An attempt at speeding up child selectors that
+ // point to a specific element tag
+ var re = /^[\/>]\s*([a-z0-9*-]+)/i;
+ var m = re.exec(t);
+
+ if ( m ) {
+ // Perform our own iteration and filter
+ for ( var i = 0, rl = ret.length; i < rl; i++ )
+ for ( var c = ret[i].firstChild; c; c = c.nextSibling )
+ if ( c.nodeType == 1 && ( c.nodeName == m[1].toUpperCase() || m[1] == "*" ) )
+ r.push( c );
+
+ ret = r;
+ t = jQuery.trim( t.replace( re, "" ) );
+ foundToken = true;
+ } else {
+ // Look for pre-defined expression tokens
+ for ( var i = 0; i < jQuery.token.length; i += 2 ) {
+ // Attempt to match each, individual, token in
+ // the specified order
+ var re = new RegExp("^(" + jQuery.token[i] + ")");
+ var m = re.exec(t);
+
+ // If the token match was found
+ if ( m ) {
+ // Map it against the token's handler
+ r = ret = jQuery.map( ret, jQuery.token[i+1].constructor == Function ?
+ jQuery.token[i+1] :
+ function(a){ return eval(jQuery.token[i+1]); });
+
+ // And remove the token
+ t = jQuery.trim( t.replace( re, "" ) );
+ foundToken = true;
+ break;
+ }
+ }
+ }
+
+ // See if there's still an expression, and that we haven't already
+ // matched a token
+ if ( t && !foundToken ) {
+ // Handle multiple expressions
+ if ( !t.indexOf(",") || !t.indexOf("|") ) {
+ // Clean teh result set
+ if ( ret[0] == context ) ret.shift();
+
+ // Merge the result sets
+ jQuery.merge( done, ret );
+
+ // Reset the context
+ r = ret = [context];
+
+ // Touch up the selector string
+ t = " " + t.substr(1,t.length);
+
+ } else {
+ // Optomize for the case nodeName#idName
+ var re2 = /^([a-z0-9_-]+)(#)([a-z0-9\\*_-]*)/i;
+ var m = re2.exec(t);
+
+ // Re-organize the results, so that they're consistent
+ if ( m ) {
+ m = [ 0, m[2], m[3], m[1] ];
+
+ } else {
+ // Otherwise, do a traditional filter check for
+ // ID, class, and element selectors
+ re2 = /^([#.]?)([a-z0-9\\*_-]*)/i;
+ m = re2.exec(t);
+ }
+
+ // Try to do a global search by ID, where we can
+ if ( m[1] == "#" && ret[ret.length-1].getElementById ) {
+ // Optimization for HTML document case
+ var oid = ret[ret.length-1].getElementById(m[2]);
+
+ // Do a quick check for node name (where applicable) so
+ // that div#foo searches will be really fast
+ ret = r = oid &&
+ (!m[3] || oid.nodeName == m[3].toUpperCase()) ? [oid] : [];
+
+ // Use the DOM 0 shortcut for the body element
+ } else if ( m[1] == "" && m[2] == "body" ) {
+ ret = r = [ document.body ];
+
+ } else {
+ // Pre-compile a regular expression to handle class searches
+ if ( m[1] == "." )
+ var rec = new RegExp("(^|\\s)" + m[2] + "(\\s|$)");
+
+ // We need to find all descendant elements, it is more
+ // efficient to use getAll() when we are already further down
+ // the tree - we try to recognize that here
+ for ( var i = 0, rl = ret.length; i < rl; i++ )
+ jQuery.merge( r,
+ m[1] != "" && ret.length != 1 ?
+ jQuery.getAll( ret[i], [], m[1], m[2], rec ) :
+ ret[i].getElementsByTagName( m[1] != "" || m[0] == "" ? "*" : m[2] )
+ );
+
+ // It's faster to filter by class and be done with it
+ if ( m[1] == "." && ret.length == 1 )
+ r = jQuery.grep( r, function(e) {
+ return rec.test(e.className);
+ });
+
+ // Same with ID filtering
+ if ( m[1] == "#" && ret.length == 1 ) {
+ // Remember, then wipe out, the result set
+ var tmp = r;
+ r = [];
+
+ // Then try to find the element with the ID
+ for ( var i = 0, tl = tmp.length; i < tl; i++ )
+ if ( tmp[i].getAttribute("id") == m[2] ) {
+ r = [ tmp[i] ];
+ break;
+ }
+ }
+
+ ret = r;
+ }
+
+ t = t.replace( re2, "" );
+ }
+
+ }
+
+ // If a selector string still exists
+ if ( t ) {
+ // Attempt to filter it
+ var val = jQuery.filter(t,r);
+ ret = r = val.r;
+ t = jQuery.trim(val.t);
+ }
+ }
+
+ // Remove the root context
+ if ( ret && ret[0] == context ) ret.shift();
+
+ // And combine the results
+ jQuery.merge( done, ret );
+
+ return done;
+ },
+
+ filter: function(t,r,not) {
+ // Look for common filter expressions
+ while ( t && /^[a-z[({<*:.#]/i.test(t) ) {
+
+ var p = jQuery.parse;
+
+ for ( var i = 0, pl = p.length; i < pl; i++ ) {
+
+ // Look for, and replace, string-like sequences
+ // and finally build a regexp out of it
+ var re = new RegExp(
+ "^" + p[i].replace("S", "([a-z*_-][a-z0-9_-]*)"), "i" );
+
+ var m = re.exec( t );
+
+ if ( m ) {
+ // Re-organize the first match
+ if ( jQuery.expr[ m[1] ]._resort )
+ m = jQuery.expr[ m[1] ]._resort( m );
+
+ // Remove what we just matched
+ t = t.replace( re, "" );
+
+ break;
+ }
+ }
+
+ // :not() is a special case that can be optimized by
+ // keeping it out of the expression list
+ if ( m[1] == ":" && m[2] == "not" )
+ r = jQuery.filter(m[3], r, true).r;
+
+ // Handle classes as a special case (this will help to
+ // improve the speed, as the regexp will only be compiled once)
+ else if ( m[1] == "." ) {
+
+ var re = new RegExp("(^|\\s)" + m[2] + "(\\s|$)");
+ r = jQuery.grep( r, function(e){
+ return re.test(e.className || '');
+ }, not);
+
+ // Otherwise, find the expression to execute
+ } else {
+ var f = jQuery.expr[m[1]];
+ if ( typeof f != "string" )
+ f = jQuery.expr[m[1]][m[2]];
+
+ // Build a custom macro to enclose it
+ eval("f = function(a,i){" +
+ ( jQuery.expr[ m[1] ]._prefix || "" ) +
+ "return " + f + "}");
+
+ // Execute it against the current filter
+ r = jQuery.grep( r, f, not );
+ }
+ }
+
+ // Return an array of filtered elements (r)
+ // and the modified expression string (t)
+ return { r: r, t: t };
+ },
+
+ getAll: function( o, r, token, name, re ) {
+ for ( var s = o.firstChild; s; s = s.nextSibling )
+ if ( s.nodeType == 1 ) {
+ var add = true;
+
+ if ( token == "." )
+ add = s.className && re.test(s.className);
+ else if ( token == "#" )
+ add = s.getAttribute('id') == name;
+
+ if ( add )
+ r.push( s );
+
+ if ( token == "#" && r.length ) break;
+
+ if ( s.firstChild )
+ jQuery.getAll( s, r, token, name, re );
+ }
+
+ return r;
+ },
+
+ /**
+ * All ancestors of a given element.
+ *
+ * @private
+ * @name $.parents
+ * @type Array<Element>
+ * @param Element elem The element to find the ancestors of.
+ * @cat DOM/Traversing
+ */
+ parents: function( elem ){
+ var matched = [];
+ var cur = elem.parentNode;
+ while ( cur && cur != document ) {
+ matched.push( cur );
+ cur = cur.parentNode;
+ }
+ return matched;
+ },
+
+ /**
+ * A handy, and fast, way to traverse in a particular direction and find
+ * a specific element.
+ *
+ * @private
+ * @name $.nth
+ * @type DOMElement
+ * @param DOMElement cur The element to search from.
+ * @param Number|String num The Nth result to match. Can be a number or a string (like 'even' or 'odd').
+ * @param String dir The direction to move in (pass in something like 'previousSibling' or 'nextSibling').
+ * @cat DOM/Traversing
+ */
+ nth: function(cur,result,dir){
+ result = result || 1;
+ var num = 0;
+ for ( ; cur; cur = cur[dir] ) {
+ if ( cur.nodeType == 1 ) num++;
+ if ( num == result || result == "even" && num % 2 == 0 && num > 1 ||
+ result == "odd" && num % 2 == 1 ) return cur;
+ }
+ },
+
+ /**
+ * All elements on a specified axis.
+ *
+ * @private
+ * @name $.sibling
+ * @type Array
+ * @param Element elem The element to find all the siblings of (including itself).
+ * @cat DOM/Traversing
+ */
+ sibling: function( n, elem ) {
+ var r = [];
+
+ for ( ; n; n = n.nextSibling ) {
+ if ( n.nodeType == 1 && (!elem || n != elem) )
+ r.push( n );
+ }
+
+ return r;
+ }
+});
\ No newline at end of file
git.asbjorn.biz / jquery.git / commitdiff