2 var chars = jQuery.browser.safari && parseInt(jQuery.browser.version) < 417 ?
4 "(?:[\\w\u0128-\uFFFF*_-]|\\\\.)",
5 quickChild = new RegExp("^[/>]\\s*(" + chars + "+)"),
6 quickID = new RegExp("^(" + chars + "+)(#)(" + chars + "+)"),
7 quickClass = new RegExp("^([#.]?)(" + chars + "*)");
11 "": "m[2]=='*'||jQuery.nodeName(a,m[2])",
12 "#": "a.getAttribute('id')==m[2]",
20 last: "i==r.length-1",
25 "first-child": "a.parentNode.getElementsByTagName('*')[0]==a",
26 "last-child": "jQuery.nth(a.parentNode.lastChild,1,'previousSibling')==a",
27 "only-child": "!jQuery.nth(a.parentNode.lastChild,2,'previousSibling')",
30 parent: "a.firstChild",
31 empty: "!a.firstChild",
34 contains: "(a.textContent||a.innerText||'').indexOf(m[3])>=0",
37 visible: '"hidden"!=a.type&&jQuery.css(a,"display")!="none"&&jQuery.css(a,"visibility")!="hidden"',
38 hidden: '"hidden"==a.type||jQuery.css(a,"display")=="none"||jQuery.css(a,"visibility")=="hidden"',
41 enabled: "!a.disabled",
42 disabled: "a.disabled",
44 selected: "a.selected||jQuery.attr(a,'selected')",
47 text: "'text'==a.type",
48 radio: "'radio'==a.type",
49 checkbox: "'checkbox'==a.type",
50 file: "'file'==a.type",
51 password: "'password'==a.type",
52 submit: "'submit'==a.type",
53 image: "'image'==a.type",
54 reset: "'reset'==a.type",
55 button: '"button"==a.type||jQuery.nodeName(a,"button")',
56 input: "/input|select|textarea|button/i.test(a.nodeName)",
59 has: "jQuery.find(m[3],a).length",
62 header: "/h\\d/i.test(a.nodeName)"
65 "[": "jQuery.find(m[2],a).length"
68 // The regular expressions that power the parsing engine
70 // Match: [@value='test'], [@foo]
71 /^\[ *(@)([\w-]+) *([!*$^~=]*) *('?"?)(.*?)\4 *\]/,
74 // Match: [div], [div p]
75 /^(\[)\s*(.*?(\[.*?\])?[^[]*?)\s*\]/,
77 // Match: :contains('foo')
78 /^(:)([\w-]+)\("?'?(.*?(\(.*?\))?[^(]*?)"?'?\)/,
80 // Match: :even, :last-chlid, #id, .class
81 new RegExp("^([:.#]*)(" + chars + "+)")
84 multiFilter: function( expr, elems, not ) {
87 while ( expr && expr != old ) {
89 var f = jQuery.filter( expr, elems, not );
90 expr = f.t.replace(/^\s*,\s*/, "" );
91 cur = not ? elems = f.r : jQuery.merge( cur, f.r );
97 find: function( t, context ) {
98 // Quickly handle non-string expressions
99 if ( typeof t != "string" )
102 // Make sure that the context is a DOM Element
103 if ( context && !context.nodeType )
106 // Set the correct context (if none is provided)
107 context = context || document;
110 // Handle the common XPath // expression
111 if ( !t.indexOf("//") ) {
112 //context = context.documentElement;
113 t = t.substr(2,t.length);
116 // And the / root expression
117 } else if ( !t.indexOf("/") && !context.ownerDocument ) {
118 context = context.documentElement;
119 t = t.substr(1,t.length);
120 if ( t.indexOf("/") >= 1 )
121 t = t.substr(t.indexOf("/"),t.length);
124 // Initialize the search
125 var ret = [context], done = [], last;
127 // Continue while a selector expression exists, and while
128 // we're no longer looping upon ourselves
129 while ( t && last != t ) {
134 t = jQuery.trim(t).replace( /^\/\//, "" );
136 var foundToken = false;
138 // An attempt at speeding up child selectors that
139 // point to a specific element tag
144 var nodeName = m[1].toUpperCase();
146 // Perform our own iteration and filter
147 for ( var i = 0; ret[i]; i++ )
148 for ( var c = ret[i].firstChild; c; c = c.nextSibling )
149 if ( c.nodeType == 1 && (nodeName == "*" || c.nodeName.toUpperCase() == nodeName.toUpperCase()) )
153 t = t.replace( re, "" );
154 if ( t.indexOf(" ") == 0 ) continue;
157 // (.. and /) DEPRECATED
158 re = /^((\/?\.\.)|([>\/+~]))\s*(\w*)/i;
160 if ( (m = re.exec(t)) != null ) {
163 var nodeName = m[4], mergeNum = jQuery.mergeNum++;
166 for ( var j = 0, rl = ret.length; j < rl; j++ )
167 if ( m.indexOf("..") < 0 ) {
168 var n = m == "~" || m == "+" ? ret[j].nextSibling : ret[j].firstChild;
169 for ( ; n; n = n.nextSibling )
170 if ( n.nodeType == 1 ) {
171 if ( m == "~" && n.mergeNum == mergeNum ) break;
173 if (!nodeName || n.nodeName.toUpperCase() == nodeName.toUpperCase() ) {
174 if ( m == "~" ) n.mergeNum = mergeNum;
178 if ( m == "+" ) break;
182 r.push( ret[j].parentNode );
186 // And remove the token
187 t = jQuery.trim( t.replace( re, "" ) );
192 // See if there's still an expression, and that we haven't already
194 if ( t && !foundToken ) {
195 // Handle multiple expressions
196 if ( !t.indexOf(",") ) {
197 // Clean the result set
198 if ( context == ret[0] ) ret.shift();
200 // Merge the result sets
201 done = jQuery.merge( done, ret );
206 // Touch up the selector string
207 t = " " + t.substr(1,t.length);
210 // Optimize for the case nodeName#idName
214 // Re-organize the results, so that they're consistent
216 m = [ 0, m[2], m[3], m[1] ];
219 // Otherwise, do a traditional filter check for
220 // ID, class, and element selectors
225 m[2] = m[2].replace(/\\/g, "");
227 var elem = ret[ret.length-1];
229 // Try to do a global search by ID, where we can
230 if ( m[1] == "#" && elem && elem.getElementById && !jQuery.isXMLDoc(elem) ) {
231 // Optimization for HTML document case
232 var oid = elem.getElementById(m[2]);
234 // Do a quick check for the existence of the actual ID attribute
235 // to avoid selecting by the name attribute in IE
236 // also check to insure id is a string to avoid selecting an element with the name of 'id' inside a form
237 if ( (jQuery.browser.msie||jQuery.browser.opera) && oid && typeof oid.id == "string" && oid.id != m[2] )
238 oid = jQuery('[@id="'+m[2]+'"]', elem)[0];
240 // Do a quick check for node name (where applicable) so
241 // that div#foo searches will be really fast
242 ret = r = oid && (!m[3] || jQuery.nodeName(oid, m[3])) ? [oid] : [];
244 // We need to find all descendant elements
245 for ( var i = 0; ret[i]; i++ ) {
246 // Grab the tag name being searched for
247 var tag = m[1] == "#" && m[3] ? m[3] : m[1] != "" || m[0] == "" ? "*" : m[2];
249 // Handle IE7 being really dumb about <object>s
250 if ( tag == "*" && ret[i].nodeName.toLowerCase() == "object" )
253 r = jQuery.merge( r, ret[i].getElementsByTagName( tag ));
256 // It's faster to filter by class and be done with it
258 r = jQuery.classFilter( r, m[2] );
260 // Same with ID filtering
264 // Try to find the element with the ID
265 for ( var i = 0; r[i]; i++ )
266 if ( r[i].getAttribute("id") == m[2] ) {
277 t = t.replace( re2, "" );
282 // If a selector string still exists
284 // Attempt to filter it
285 var val = jQuery.filter(t,r);
287 t = jQuery.trim(val.t);
291 // An error occurred with the selector;
292 // just return an empty set instead
296 // Remove the root context
297 if ( ret && context == ret[0] )
300 // And combine the results
301 done = jQuery.merge( done, ret );
306 classFilter: function(r,m,not){
309 for ( var i = 0; r[i]; i++ ) {
310 var pass = (" " + r[i].className + " ").indexOf( m ) >= 0;
311 if ( !not && pass || not && !pass )
317 filter: function(t,r,not) {
320 // Look for common filter expressions
321 while ( t && t != last ) {
324 var p = jQuery.parse, m;
326 for ( var i = 0; p[i]; i++ ) {
330 // Remove what we just matched
331 t = t.substring( m[0].length );
333 m[2] = m[2].replace(/\\/g, "");
341 // :not() is a special case that can be optimized by
342 // keeping it out of the expression list
343 if ( m[1] == ":" && m[2] == "not" )
344 r = jQuery.filter(m[3], r, true).r;
346 // We can get a big speed boost by filtering by class here
347 else if ( m[1] == "." )
348 r = jQuery.classFilter(r, m[2], not);
350 else if ( m[1] == "@" ) {
351 var tmp = [], type = m[3];
353 for ( var i = 0, rl = r.length; i < rl; i++ ) {
354 var a = r[i], z = a[ jQuery.props[m[2]] || m[2] ];
356 if ( z == null || /href|src|selected/.test(m[2]) )
357 z = jQuery.attr(a,m[2]) || '';
359 if ( (type == "" && !!z ||
360 type == "=" && z == m[5] ||
361 type == "!=" && z != m[5] ||
362 type == "^=" && z && !z.indexOf(m[5]) ||
363 type == "$=" && z.substr(z.length - m[5].length) == m[5] ||
364 (type == "*=" || type == "~=") && z.indexOf(m[5]) >= 0) ^ not )
370 // We can get a speed boost by handling nth-child here
371 } else if ( m[1] == ":" && m[2] == "nth-child" ) {
372 var num = jQuery.mergeNum++, tmp = [],
373 test = /(\d*)n\+?(\d*)/.exec(
374 m[3] == "even" && "2n" || m[3] == "odd" && "2n+1" ||
375 !/\D/.test(m[3]) && "n+" + m[3] || m[3]),
376 first = (test[1] || 1) - 0, last = test[2] - 0;
378 for ( var i = 0, rl = r.length; i < rl; i++ ) {
379 var node = r[i], parentNode = node.parentNode;
381 if ( num != parentNode.mergeNum ) {
384 for ( var n = parentNode.firstChild; n; n = n.nextSibling )
385 if ( n.nodeType == 1 )
388 parentNode.mergeNum = num;
394 if ( last == 0 || node.nodeIndex == last )
396 } else if ( (node.nodeIndex + last) % first == 0 )
405 // Otherwise, find the expression to execute
407 var f = jQuery.expr[m[1]];
408 if ( typeof f != "string" )
409 f = jQuery.expr[m[1]][m[2]];
411 // Build a custom macro to enclose it
412 f = eval("false||function(a,i){return " + f + "}");
414 // Execute it against the current filter
415 r = jQuery.grep( r, f, not );
419 // Return an array of filtered elements (r)
420 // and the modified expression string (t)
421 return { r: r, t: t };
424 parents: function( elem ){
426 var cur = elem.parentNode;
427 while ( cur && cur != document ) {
429 cur = cur.parentNode;
434 nth: function(cur,result,dir,elem){
435 result = result || 1;
438 for ( ; cur; cur = cur[dir] )
439 if ( cur.nodeType == 1 && ++num == result )
445 sibling: function( n, elem ) {
448 for ( ; n; n = n.nextSibling ) {
449 if ( n.nodeType == 1 && (!elem || n != elem) )