3 "": "m[2]=='*'||jQuery.nodeName(a,m[2])",
4 "#": "a.getAttribute('id')==m[2]",
12 last: "i==r.length-1",
17 "nth-child": "jQuery.nth(a.parentNode.firstChild,m[3],'nextSibling',a)==a",
18 "first-child": "jQuery.nth(a.parentNode.firstChild,1,'nextSibling')==a",
19 "last-child": "jQuery.nth(a.parentNode.lastChild,1,'previousSibling')==a",
20 "only-child": "jQuery.sibling(a.parentNode.firstChild).length==1",
23 parent: "a.firstChild",
24 empty: "!a.firstChild",
27 contains: "jQuery.fn.text.apply([a]).indexOf(m[3])>=0",
30 visible: 'a.type!="hidden"&&jQuery.css(a,"display")!="none"&&jQuery.css(a,"visibility")!="hidden"',
31 hidden: 'a.type=="hidden"||jQuery.css(a,"display")=="none"||jQuery.css(a,"visibility")=="hidden"',
34 enabled: "!a.disabled",
35 disabled: "a.disabled",
37 selected: "a.selected||jQuery.attr(a,'selected')",
40 text: "a.type=='text'",
41 radio: "a.type=='radio'",
42 checkbox: "a.type=='checkbox'",
43 file: "a.type=='file'",
44 password: "a.type=='password'",
45 submit: "a.type=='submit'",
46 image: "a.type=='image'",
47 reset: "a.type=='reset'",
48 button: 'a.type=="button"||jQuery.nodeName(a,"button")',
49 input: "/input|select|textarea|button/i.test(a.nodeName)"
51 ".": "jQuery.className.has(a,m[2])",
55 "^=": "z&&!z.indexOf(m[4])",
56 "$=": "z&&z.substr(z.length - m[4].length,m[4].length)==m[4]",
57 "*=": "z&&z.indexOf(m[4])>=0",
60 return ["", m[1], m[3], m[2], m[5]];
62 _prefix: "z=a[m[3]];if(!z||/href|src/.test(m[3]))z=jQuery.attr(a,m[3]);"
64 "[": "jQuery.find(m[2],a).length"
67 // The regular expressions that power the parsing engine
69 // Match: [@value='test'], [@foo]
70 /^\[ *(@)([\w-]+) *([!*$^=]*) *('?"?)(.*?)\4 *\]/i,
72 // Match: [div], [div p]
73 /^(\[)\s*(.*?(\[.*?\])?[^[]*?)\s*\]/,
75 // Match: :contains('foo')
76 /^(:)([\w-]+)\("?'?(.*?(\(.*?\))?[^(]*?)"?'?\)/i,
78 // Match: :even, :last-chlid, #id, .class
79 /^([:.#]*)([\w\u0128-\uFFFF*-]+)/i
83 /^(\/?\.\.)/, "a.parentNode",
84 /^(>|\/)/, "jQuery.sibling(a.firstChild)",
85 /^(\+)/, "jQuery.nth(a,2,'nextSibling')",
87 var s = jQuery.sibling(a.parentNode.firstChild);
88 return s.slice(jQuery.inArray(a,s) + 1);
92 multiFilter: function( expr, elems, not ) {
95 while ( expr && expr != old ) {
97 var f = jQuery.filter( expr, elems, not );
98 expr = f.t.replace(/^\s*,\s*/, "" );
99 cur = not ? elems = f.r : jQuery.merge( cur, f.r );
107 * @type Array<Element>
111 find: function( t, context ) {
112 // Quickly handle non-string expressions
113 if ( typeof t != "string" )
116 // Make sure that the context is a DOM Element
117 if ( context && !context.nodeType )
120 // Set the correct context (if none is provided)
121 context = context || document;
123 // Handle the common XPath // expression
124 if ( !t.indexOf("//") ) {
125 context = context.documentElement;
126 t = t.substr(2,t.length);
128 // And the / root expression
129 } else if ( !t.indexOf("/") && !context.ownerDocument ) {
130 context = context.documentElement;
131 t = t.substr(1,t.length);
132 if ( t.indexOf("/") >= 1 )
133 t = t.substr(t.indexOf("/"),t.length);
136 // Initialize the search
137 var ret = [context], done = [], last;
139 // Continue while a selector expression exists, and while
140 // we're no longer looping upon ourselves
141 while ( t && last != t ) {
145 t = jQuery.trim(t).replace( /^\/\//, "" );
147 var foundToken = false;
149 // An attempt at speeding up child selectors that
150 // point to a specific element tag
151 var re = /^[\/>]\s*([\w*-]+)/i;
155 // Perform our own iteration and filter
156 jQuery.each( ret, function(){
157 for ( var c = this.firstChild; c; c = c.nextSibling )
158 if ( c.nodeType == 1 && ( jQuery.nodeName(c, m[1]) || m[1] == "*" ) )
163 t = t.replace( re, "" );
164 if ( t.indexOf(" ") == 0 ) continue;
167 // Look for pre-defined expression tokens
168 for ( var i = 0; i < jQuery.token.length; i += 2 ) {
169 // Attempt to match each, individual, token in
170 // the specified order
171 var re = jQuery.token[i];
174 // If the token match was found
176 // Map it against the token's handler
177 r = ret = jQuery.map( ret, jQuery.isFunction( jQuery.token[i+1] ) ?
179 function(a){ return eval(jQuery.token[i+1]); });
181 // And remove the token
182 t = jQuery.trim( t.replace( re, "" ) );
189 // See if there's still an expression, and that we haven't already
191 if ( t && !foundToken ) {
192 // Handle multiple expressions
193 if ( !t.indexOf(",") ) {
194 // Clean the result set
195 if ( ret[0] == context ) ret.shift();
197 // Merge the result sets
198 done = jQuery.merge( done, ret );
203 // Touch up the selector string
204 t = " " + t.substr(1,t.length);
207 // Optomize for the case nodeName#idName
208 var re2 = /^(\w+)(#)([\w\u0128-\uFFFF*-]+)/i;
211 // Re-organize the results, so that they're consistent
213 m = [ 0, m[2], m[3], m[1] ];
216 // Otherwise, do a traditional filter check for
217 // ID, class, and element selectors
218 re2 = /^([#.]?)([\w\u0128-\uFFFF*-]*)/i;
222 var elem = ret[ret.length-1];
224 // Try to do a global search by ID, where we can
225 if ( m[1] == "#" && elem && elem.getElementById ) {
226 // Optimization for HTML document case
227 var oid = elem.getElementById(m[2]);
229 // Do a quick check for the existence of the actual ID attribute
230 // to avoid selecting by the name attribute in IE
231 if ( jQuery.browser.msie && oid && oid.id != m[2] )
232 oid = jQuery('[@id="'+m[2]+'"]', elem)[0];
234 // Do a quick check for node name (where applicable) so
235 // that div#foo searches will be really fast
236 ret = r = oid && (!m[3] || jQuery.nodeName(oid, m[3])) ? [oid] : [];
239 // Pre-compile a regular expression to handle class searches
241 var rec = new RegExp("(^|\\s)" + m[2] + "(\\s|$)");
243 // We need to find all descendant elements, it is more
244 // efficient to use getAll() when we are already further down
245 // the tree - we try to recognize that here
246 for ( var i = 0, rl = ret.length; i < rl; i++ ) {
247 // Grab the tag name being searched for
248 var tag = m[1] != "" || m[0] == "" ? "*" : m[2];
250 // Handle IE7 being really dumb about <object>s
251 if ( tag == "*" && ret[i].nodeName.toLowerCase() == "object" )
254 r = jQuery.merge( r, ret[i].getElementsByTagName( tag ));
257 // It's faster to filter by class and be done with it
259 r = jQuery.grep( r, function(e) {
260 return rec.test(e.className);
263 // Same with ID filtering
265 // Remember, then wipe out, the result set
269 // Then try to find the element with the ID
270 jQuery.each( tmp, function(){
271 if ( this.getAttribute("id") == m[2] ) {
281 t = t.replace( re2, "" );
286 // If a selector string still exists
288 // Attempt to filter it
289 var val = jQuery.filter(t,r);
291 t = jQuery.trim(val.t);
295 // An error occurred with the selector;
296 // just return an empty set instead
300 // Remove the root context
301 if ( ret && ret[0] == context )
304 // And combine the results
305 done = jQuery.merge( done, ret );
310 filter: function(t,r,not) {
313 // Look for common filter expressions
314 while ( t && t != last ) {
317 var p = jQuery.parse, m;
319 jQuery.each( p, function(i,re){
321 // Look for, and replace, string-like sequences
322 // and finally build a regexp out of it
326 // Remove what we just matched
327 t = t.substring( m[0].length );
329 // Re-organize the first match
330 if ( jQuery.expr[ m[1] ]._resort )
331 m = jQuery.expr[ m[1] ]._resort( m );
340 // :not() is a special case that can be optimized by
341 // keeping it out of the expression list
342 if ( m[1] == ":" && m[2] == "not" )
343 r = jQuery.filter(m[3], r, true).r;
345 // Handle classes as a special case (this will help to
346 // improve the speed, as the regexp will only be compiled once)
347 else if ( m[1] == "." ) {
349 var re = new RegExp("(^|\\s)" + m[2] + "(\\s|$)");
350 r = jQuery.grep( r, function(e){
351 return re.test(e.className || "");
354 // Otherwise, find the expression to execute
356 var f = jQuery.expr[m[1]];
357 if ( typeof f != "string" )
358 f = jQuery.expr[m[1]][m[2]];
360 // Build a custom macro to enclose it
361 eval("f = function(a,i){" +
362 ( jQuery.expr[ m[1] ]._prefix || "" ) +
363 "return " + f + "}");
365 // Execute it against the current filter
366 r = jQuery.grep( r, f, not );
370 // Return an array of filtered elements (r)
371 // and the modified expression string (t)
372 return { r: r, t: t };
376 * All ancestors of a given element.
380 * @type Array<Element>
381 * @param Element elem The element to find the ancestors of.
382 * @cat DOM/Traversing
384 parents: function( elem ){
386 var cur = elem.parentNode;
387 while ( cur && cur != document ) {
389 cur = cur.parentNode;
395 * A handy, and fast, way to traverse in a particular direction and find
396 * a specific element.
401 * @param DOMElement cur The element to search from.
402 * @param String|Number num The Nth result to match. Can be a number or a string (like 'even' or 'odd').
403 * @param String dir The direction to move in (pass in something like 'previousSibling' or 'nextSibling').
404 * @cat DOM/Traversing
406 nth: function(cur,result,dir,elem){
407 result = result || 1;
409 for ( ; cur; cur = cur[dir] ) {
410 if ( cur.nodeType == 1 ) num++;
411 if ( num == result || result == "even" && num % 2 == 0 && num > 1 && cur == elem ||
412 result == "odd" && num % 2 == 1 && cur == elem ) return cur;
417 * All elements on a specified axis.
422 * @param Element elem The element to find all the siblings of (including itself).
423 * @cat DOM/Traversing
425 sibling: function( n, elem ) {
428 for ( ; n; n = n.nextSibling ) {
429 if ( n.nodeType == 1 && (!elem || n != elem) )