src/selector.js

   1 /*!
   2  * Sizzle CSS Selector Engine - v0.9.3
   3  *  Copyright 2009, The Dojo Foundation
   4  *  Released under the MIT, BSD, and GPL Licenses.
   5  *  More information: http://sizzlejs.com/
   6  */
   7 (function(){
   8
   9 var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[]+)+|[>+~])(\s*,\s*)?/g,
  10         done = 0,
  11         toString = Object.prototype.toString;
  12
  13 var Sizzle = function(selector, context, results, seed) {
  14         results = results || [];
  15         context = context || document;
  16
  17         if ( context.nodeType !== 1 && context.nodeType !== 9 )
  18                 return [];
  19
  20         if ( !selector || typeof selector !== "string" ) {
  21                 return results;
  22         }
  23
  24         var parts = [], m, set, checkSet, check, mode, extra, prune = true;
  25
  26         // Reset the position of the chunker regexp (start from head)
  27         chunker.lastIndex = 0;
  28
  29         while ( (m = chunker.exec(selector)) !== null ) {
  30                 parts.push( m[1] );
  31
  32                 if ( m[2] ) {
  33                         extra = RegExp.rightContext;
  34                         break;
  35                 }
  36         }
  37
  38         if ( parts.length > 1 && origPOS.exec( selector ) ) {
  39                 if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
  40                         set = posProcess( parts[0] + parts[1], context );
  41                 } else {
  42                         set = Expr.relative[ parts[0] ] ?
  43                                 [ context ] :
  44                                 Sizzle( parts.shift(), context );
  45
  46                         while ( parts.length ) {
  47                                 selector = parts.shift();
  48
  49                                 if ( Expr.relative[ selector ] )
  50                                         selector += parts.shift();
  51
  52                                 set = posProcess( selector, set );
  53                         }
  54                 }
  55         } else {
  56                 var ret = seed ?
  57                         { expr: parts.pop(), set: makeArray(seed) } :
  58                         Sizzle.find( parts.pop(), parts.length === 1 && context.parentNode ? context.parentNode : context, isXML(context) );
  59                 set = Sizzle.filter( ret.expr, ret.set );
  60
  61                 if ( parts.length > 0 ) {
  62                         checkSet = makeArray(set);
  63                 } else {
  64                         prune = false;
  65                 }
  66
  67                 while ( parts.length ) {
  68                         var cur = parts.pop(), pop = cur;
  69
  70                         if ( !Expr.relative[ cur ] ) {
  71                                 cur = "";
  72                         } else {
  73                                 pop = parts.pop();
  74                         }
  75
  76                         if ( pop == null ) {
  77                                 pop = context;
  78                         }
  79
  80                         Expr.relative[ cur ]( checkSet, pop, isXML(context) );
  81                 }
  82         }
  83
  84         if ( !checkSet ) {
  85                 checkSet = set;
  86         }
  87
  88         if ( !checkSet ) {
  89                 throw "Syntax error, unrecognized expression: " + (cur || selector);
  90         }
  91
  92         if ( toString.call(checkSet) === "[object Array]" ) {
  93                 if ( !prune ) {
  94                         results.push.apply( results, checkSet );
  95                 } else if ( context.nodeType === 1 ) {
  96                         for ( var i = 0; checkSet[i] != null; i++ ) {
  97                                 if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
  98                                         results.push( set[i] );
  99                                 }
 100                         }
 101                 } else {
 102                         for ( var i = 0; checkSet[i] != null; i++ ) {
 103                                 if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
 104                                         results.push( set[i] );
 105                                 }
 106                         }
 107                 }
 108         } else {
 109                 makeArray( checkSet, results );
 110         }
 111
 112         if ( extra ) {
 113                 Sizzle( extra, context, results, seed );
 114
 115                 if ( sortOrder ) {
 116                         hasDuplicate = false;
 117                         results.sort(sortOrder);
 118
 119                         if ( hasDuplicate ) {
 120                                 for ( var i = 1; i < results.length; i++ ) {
 121                                         if ( results[i] === results[i-1] ) {
 122                                                 results.splice(i--, 1);
 123                                         }
 124                                 }
 125                         }
 126                 }
 127         }
 128
 129         return results;
 130 };
 131
 132 Sizzle.matches = function(expr, set){
 133         return Sizzle(expr, null, null, set);
 134 };
 135
 136 Sizzle.find = function(expr, context, isXML){
 137         var set, match;
 138
 139         if ( !expr ) {
 140                 return [];
 141         }
 142
 143         for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
 144                 var type = Expr.order[i], match;
 145
 146                 if ( (match = Expr.match[ type ].exec( expr )) ) {
 147                         var left = RegExp.leftContext;
 148
 149                         if ( left.substr( left.length - 1 ) !== "\\" ) {
 150                                 match[1] = (match[1] || "").replace(/\\/g, "");
 151                                 set = Expr.find[ type ]( match, context, isXML );
 152                                 if ( set != null ) {
 153                                         expr = expr.replace( Expr.match[ type ], "" );
 154                                         break;
 155                                 }
 156                         }
 157                 }
 158         }
 159
 160         if ( !set ) {
 161                 set = context.getElementsByTagName("*");
 162         }
 163
 164         return {set: set, expr: expr};
 165 };
 166
 167 Sizzle.filter = function(expr, set, inplace, not){
 168         var old = expr, result = [], curLoop = set, match, anyFound;
 169
 170         while ( expr && set.length ) {
 171                 for ( var type in Expr.filter ) {
 172                         if ( (match = Expr.match[ type ].exec( expr )) != null ) {
 173                                 var filter = Expr.filter[ type ], found, item;
 174                                 anyFound = false;
 175
 176                                 if ( curLoop == result ) {
 177                                         result = [];
 178                                 }
 179
 180                                 if ( Expr.preFilter[ type ] ) {
 181                                         match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not );
 182
 183                                         if ( !match ) {
 184                                                 anyFound = found = true;
 185                                         } else if ( match === true ) {
 186                                                 continue;
 187                                         }
 188                                 }
 189
 190                                 if ( match ) {
 191                                         for ( var i = 0; (item = curLoop[i]) != null; i++ ) {
 192                                                 if ( item ) {
 193                                                         found = filter( item, match, i, curLoop );
 194                                                         var pass = not ^ !!found;
 195
 196                                                         if ( inplace && found != null ) {
 197                                                                 if ( pass ) {
 198                                                                         anyFound = true;
 199                                                                 } else {
 200                                                                         curLoop[i] = false;
 201                                                                 }
 202                                                         } else if ( pass ) {
 203                                                                 result.push( item );
 204                                                                 anyFound = true;
 205                                                         }
 206                                                 }
 207                                         }
 208                                 }
 209
 210                                 if ( found !== undefined ) {
 211                                         if ( !inplace ) {
 212                                                 curLoop = result;
 213                                         }
 214
 215                                         expr = expr.replace( Expr.match[ type ], "" );
 216
 217                                         if ( !anyFound ) {
 218                                                 return [];
 219                                         }
 220
 221                                         break;
 222                                 }
 223                         }
 224                 }
 225
 226                 // Improper expression
 227                 if ( expr == old ) {
 228                         if ( anyFound == null ) {
 229                                 throw "Syntax error, unrecognized expression: " + expr;
 230                         } else {
 231                                 break;
 232                         }
 233                 }
 234
 235                 old = expr;
 236         }
 237
 238         return curLoop;
 239 };
 240
 241 var Expr = Sizzle.selectors = {
 242         order: [ "ID", "NAME", "TAG" ],
 243         match: {
 244                 ID: /#((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
 245                 CLASS: /\.((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
 246                 NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF_-]|\\.)+)['"]*\]/,
 247                 ATTR: /\[\s*((?:[\w\u00c0-\uFFFF_-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
 248                 TAG: /^((?:[\w\u00c0-\uFFFF\*_-]|\\.)+)/,
 249                 CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,
 250                 POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,
 251                 PSEUDO: /:((?:[\w\u00c0-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
 252         },
 253         attrMap: {
 254                 "class": "className",
 255                 "for": "htmlFor"
 256         },
 257         attrHandle: {
 258                 href: function(elem){
 259                         return elem.getAttribute("href");
 260                 }
 261         },
 262         relative: {
 263                 "+": function(checkSet, part, isXML){
 264                         var     isPartStr = typeof part === "string",
 265                                 isTag = isPartStr && !/\W/.test(part),
 266                                 isPartStrNotTag = isPartStr && !isTag;
 267                         if ( isTag && !isXML ) part = part.toUpperCase();
 268                         for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) {
 269                                 if ( elem = checkSet[i] ) {
 270                                         while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {};
 271                                         checkSet[i] = isPartStrNotTag || elem && elem.nodeName === part ?
 272                                                  elem : elem === part;
 273                                 }
 274                         }
 275                         if (isPartStrNotTag) {
 276                                 Sizzle.filter( part, checkSet, true );
 277                         }
 278                 },
 279                 ">": function(checkSet, part, isXML){
 280                         if ( typeof part === "string" && !/\W/.test(part) ) {
 281                                 part = isXML ? part : part.toUpperCase();
 282
 283                                 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 284                                         var elem = checkSet[i];
 285                                         if ( elem ) {
 286                                                 var parent = elem.parentNode;
 287                                                 checkSet[i] = parent.nodeName === part ? parent : false;
 288                                         }
 289                                 }
 290                         } else {
 291                                 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 292                                         var elem = checkSet[i];
 293                                         if ( elem ) {
 294                                                 checkSet[i] = typeof part === "string" ?
 295                                                         elem.parentNode :
 296                                                         elem.parentNode === part;
 297                                         }
 298                                 }
 299
 300                                 if ( typeof part === "string" ) {
 301                                         Sizzle.filter( part, checkSet, true );
 302                                 }
 303                         }
 304                 },
 305                 "": function(checkSet, part, isXML){
 306                         var doneName = done++, checkFn = dirCheck;
 307
 308                         if ( !part.match(/\W/) ) {
 309                                 var nodeCheck = part = isXML ? part : part.toUpperCase();
 310                                 checkFn = dirNodeCheck;
 311                         }
 312
 313                         checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML);
 314                 },
 315                 "~": function(checkSet, part, isXML){
 316                         var doneName = done++, checkFn = dirCheck;
 317
 318                         if ( typeof part === "string" && !part.match(/\W/) ) {
 319                                 var nodeCheck = part = isXML ? part : part.toUpperCase();
 320                                 checkFn = dirNodeCheck;
 321                         }
 322
 323                         checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML);
 324                 }
 325         },
 326         find: {
 327                 ID: function(match, context, isXML){
 328                         if ( typeof context.getElementById !== "undefined" && !isXML ) {
 329                                 var m = context.getElementById(match[1]);
 330                                 return m ? [m] : [];
 331                         }
 332                 },
 333                 NAME: function(match, context, isXML){
 334                         if ( typeof context.getElementsByName !== "undefined" ) {
 335                                 var ret = context.getElementsByName(match[1]);
 336                                 return ret.length === 0 ? null : ret;
 337                         }
 338                 },
 339                 TAG: function(match, context){
 340                         return context.getElementsByTagName(match[1]);
 341                 }
 342         },
 343         preFilter: {
 344                 CLASS: function(match, curLoop, inplace, result, not){
 345                         match = " " + match[1].replace(/\\/g, "") + " ";
 346
 347                         for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) {
 348                                 if ( elem ) {
 349                                         if ( not ^ (elem.className && (" " + elem.className + " ").indexOf(match) >= 0) ) {
 350                                                 if ( !inplace )
 351                                                         result.push( elem );
 352                                         } else if ( inplace ) {
 353                                                 curLoop[i] = false;
 354                                         }
 355                                 }
 356                         }
 357
 358                         return false;
 359                 },
 360                 ID: function(match){
 361                         return match[1].replace(/\\/g, "");
 362                 },
 363                 TAG: function(match, curLoop){
 364                         for ( var i = 0; curLoop[i] === false; i++ ){}
 365                         return curLoop[i] && isXML(curLoop[i]) ? match[1] : match[1].toUpperCase();
 366                 },
 367                 CHILD: function(match){
 368                         if ( match[1] == "nth" ) {
 369                                 // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
 370                                 var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
 371                                         match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
 372                                         !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);
 373
 374                                 // calculate the numbers (first)n+(last) including if they are negative
 375                                 match[2] = (test[1] + (test[2] || 1)) - 0;
 376                                 match[3] = test[3] - 0;
 377                         }
 378
 379                         // TODO: Move to normal caching system
 380                         match[0] = done++;
 381
 382                         return match;
 383                 },
 384                 ATTR: function(match){
 385                         var name = match[1].replace(/\\/g, "");
 386
 387                         if ( Expr.attrMap[name] ) {
 388                                 match[1] = Expr.attrMap[name];
 389                         }
 390
 391                         if ( match[2] === "~=" ) {
 392                                 match[4] = " " + match[4] + " ";
 393                         }
 394
 395                         return match;
 396                 },
 397                 PSEUDO: function(match, curLoop, inplace, result, not){
 398                         if ( match[1] === "not" ) {
 399                                 // If we're dealing with a complex expression, or a simple one
 400                                 if ( match[3].match(chunker).length > 1 || /^\w/.test(match[3]) ) {
 401                                         match[3] = Sizzle(match[3], null, null, curLoop);
 402                                 } else {
 403                                         var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
 404                                         if ( !inplace ) {
 405                                                 result.push.apply( result, ret );
 406                                         }
 407                                         return false;
 408                                 }
 409                         } else if ( Expr.match.POS.test( match[0] ) ) {
 410                                 return true;
 411                         }
 412
 413                         return match;
 414                 },
 415                 POS: function(match){
 416                         match.unshift( true );
 417                         return match;
 418                 }
 419         },
 420         filters: {
 421                 enabled: function(elem){
 422                         return elem.disabled === false && elem.type !== "hidden";
 423                 },
 424                 disabled: function(elem){
 425                         return elem.disabled === true;
 426                 },
 427                 checked: function(elem){
 428                         return elem.checked === true;
 429                 },
 430                 selected: function(elem){
 431                         // Accessing this property makes selected-by-default
 432                         // options in Safari work properly
 433                         elem.parentNode.selectedIndex;
 434                         return elem.selected === true;
 435                 },
 436                 parent: function(elem){
 437                         return !!elem.firstChild;
 438                 },
 439                 empty: function(elem){
 440                         return !elem.firstChild;
 441                 },
 442                 has: function(elem, i, match){
 443                         return !!Sizzle( match[3], elem ).length;
 444                 },
 445                 header: function(elem){
 446                         return /h\d/i.test( elem.nodeName );
 447                 },
 448                 text: function(elem){
 449                         return "text" === elem.type;
 450                 },
 451                 radio: function(elem){
 452                         return "radio" === elem.type;
 453                 },
 454                 checkbox: function(elem){
 455                         return "checkbox" === elem.type;
 456                 },
 457                 file: function(elem){
 458                         return "file" === elem.type;
 459                 },
 460                 password: function(elem){
 461                         return "password" === elem.type;
 462                 },
 463                 submit: function(elem){
 464                         return "submit" === elem.type;
 465                 },
 466                 image: function(elem){
 467                         return "image" === elem.type;
 468                 },
 469                 reset: function(elem){
 470                         return "reset" === elem.type;
 471                 },
 472                 button: function(elem){
 473                         return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
 474                 },
 475                 input: function(elem){
 476                         return /input|select|textarea|button/i.test(elem.nodeName);
 477                 }
 478         },
 479         setFilters: {
 480                 first: function(elem, i){
 481                         return i === 0;
 482                 },
 483                 last: function(elem, i, match, array){
 484                         return i === array.length - 1;
 485                 },
 486                 even: function(elem, i){
 487                         return i % 2 === 0;
 488                 },
 489                 odd: function(elem, i){
 490                         return i % 2 === 1;
 491                 },
 492                 lt: function(elem, i, match){
 493                         return i < match[3] - 0;
 494                 },
 495                 gt: function(elem, i, match){
 496                         return i > match[3] - 0;
 497                 },
 498                 nth: function(elem, i, match){
 499                         return match[3] - 0 == i;
 500                 },
 501                 eq: function(elem, i, match){
 502                         return match[3] - 0 == i;
 503                 }
 504         },
 505         filter: {
 506                 CHILD: function(elem, match){
 507                         var type = match[1], node = elem;
 508                         switch (type) {
 509                                 case 'only':
 510                                 case 'first':
 511                                         while (node = node.previousSibling)  {
 512                                                 if ( node.nodeType === 1 ) return false;
 513                                         }
 514                                         if ( type == 'first') return true;
 515                                         node = elem;
 516                                 case 'last':
 517                                         while (node = node.nextSibling)  {
 518                                                 if ( node.nodeType === 1 ) return false;
 519                                         }
 520                                         return true;
 521                                 case 'nth':
 522                                         var first = match[2], last = match[3];
 523
 524                                         if ( first == 1 && last == 0 ) {
 525                                                 return true;
 526                                         }
 527
 528                                         var doneName = match[0],
 529                                                 parent = elem.parentNode;
 530
 531                                         if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
 532                                                 var count = 0;
 533                                                 for ( node = parent.firstChild; node; node = node.nextSibling ) {
 534                                                         if ( node.nodeType === 1 ) {
 535                                                                 node.nodeIndex = ++count;
 536                                                         }
 537                                                 }
 538                                                 parent.sizcache = doneName;
 539                                         }
 540
 541                                         var diff = elem.nodeIndex - last;
 542                                         if ( first == 0 ) {
 543                                                 return diff == 0;
 544                                         } else {
 545                                                 return ( diff % first == 0 && diff / first >= 0 );
 546                                         }
 547                         }
 548                 },
 549                 PSEUDO: function(elem, match, i, array){
 550                         var name = match[1], filter = Expr.filters[ name ];
 551
 552                         if ( filter ) {
 553                                 return filter( elem, i, match, array );
 554                         } else if ( name === "contains" ) {
 555                                 return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
 556                         } else if ( name === "not" ) {
 557                                 var not = match[3];
 558
 559                                 for ( var i = 0, l = not.length; i < l; i++ ) {
 560                                         if ( not[i] === elem ) {
 561                                                 return false;
 562                                         }
 563                                 }
 564
 565                                 return true;
 566                         }
 567                 },
 568                 ID: function(elem, match){
 569                         return elem.nodeType === 1 && elem.getAttribute("id") === match;
 570                 },
 571                 TAG: function(elem, match){
 572                         return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
 573                 },
 574                 CLASS: function(elem, match){
 575                         return match.test( elem.className );
 576                 },
 577                 ATTR: function(elem, match){
 578                         var name = match[1],
 579                                 result = Expr.attrHandle[ name ] ?
 580                                         Expr.attrHandle[ name ]( elem ) :
 581                                         elem[ name ] != null ?
 582                                                 elem[ name ] :
 583                                                 elem.getAttribute( name ),
 584                                 value = result + "",
 585                                 type = match[2],
 586                                 check = match[4];
 587
 588                         return result == null ?
 589                                 type === "!=" :
 590                                 type === "=" ?
 591                                 value === check :
 592                                 type === "*=" ?
 593                                 value.indexOf(check) >= 0 :
 594                                 type === "~=" ?
 595                                 (" " + value + " ").indexOf(check) >= 0 :
 596                                 !check ?
 597                                 value && result !== false :
 598                                 type === "!=" ?
 599                                 value != check :
 600                                 type === "^=" ?
 601                                 value.indexOf(check) === 0 :
 602                                 type === "$=" ?
 603                                 value.substr(value.length - check.length) === check :
 604                                 type === "|=" ?
 605                                 value === check || value.substr(0, check.length + 1) === check + "-" :
 606                                 false;
 607                 },
 608                 POS: function(elem, match, i, array){
 609                         var name = match[2], filter = Expr.setFilters[ name ];
 610
 611                         if ( filter ) {
 612                                 return filter( elem, i, match, array );
 613                         }
 614                 }
 615         }
 616 };
 617
 618 var origPOS = Expr.match.POS;
 619
 620 for ( var type in Expr.match ) {
 621         Expr.match[ type ] = RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source );
 622 }
 623
 624 var makeArray = function(array, results) {
 625         array = Array.prototype.slice.call( array );
 626
 627         if ( results ) {
 628                 results.push.apply( results, array );
 629                 return results;
 630         }
 631
 632         return array;
 633 };
 634
 635 // Perform a simple check to determine if the browser is capable of
 636 // converting a NodeList to an array using builtin methods.
 637 try {
 638         Array.prototype.slice.call( document.documentElement.childNodes );
 639
 640 // Provide a fallback method if it does not work
 641 } catch(e){
 642         makeArray = function(array, results) {
 643                 var ret = results || [];
 644
 645                 if ( toString.call(array) === "[object Array]" ) {
 646                         Array.prototype.push.apply( ret, array );
 647                 } else {
 648                         if ( typeof array.length === "number" ) {
 649                                 for ( var i = 0, l = array.length; i < l; i++ ) {
 650                                         ret.push( array[i] );
 651                                 }
 652                         } else {
 653                                 for ( var i = 0; array[i]; i++ ) {
 654                                         ret.push( array[i] );
 655                                 }
 656                         }
 657                 }
 658
 659                 return ret;
 660         };
 661 }
 662
 663 var sortOrder;
 664
 665 if ( Array.prototype.indexOf ) {
 666         var indexOf = Array.prototype.indexOf,
 667                 allSort = document.getElementsByTagName("*");
 668
 669         sortOrder = function( a, b ) {
 670                 var ret = indexOf.call( allSort, a ) - indexOf.call( allSort, b );
 671                 if ( ret === 0 ) {
 672                         hasDuplicate = true;
 673                 }
 674                 return ret;
 675         };
 676 } else if ( document.documentElement.sourceIndex === 1 ) {
 677         sortOrder = function( a, b ) {
 678                 var ret = a.sourceIndex - b.sourceIndex;
 679                 if ( ret === 0 ) {
 680                         hasDuplicate = true;
 681                 }
 682                 return ret;
 683         };
 684 }
 685
 686 // Check to see if the browser returns elements by name when
 687 // querying by getElementById (and provide a workaround)
 688 (function(){
 689         // We're going to inject a fake input element with a specified name
 690         var form = document.createElement("form"),
 691                 id = "script" + (new Date).getTime();
 692         form.innerHTML = "<input name='" + id + "'/>";
 693
 694         // Inject it into the root element, check its status, and remove it quickly
 695         var root = document.documentElement;
 696         root.insertBefore( form, root.firstChild );
 697
 698         // The workaround has to do additional checks after a getElementById
 699         // Which slows things down for other browsers (hence the branching)
 700         if ( !!document.getElementById( id ) ) {
 701                 Expr.find.ID = function(match, context, isXML){
 702                         if ( typeof context.getElementById !== "undefined" && !isXML ) {
 703                                 var m = context.getElementById(match[1]);
 704                                 return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
 705                         }
 706                 };
 707
 708                 Expr.filter.ID = function(elem, match){
 709                         var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");
 710                         return elem.nodeType === 1 && node && node.nodeValue === match;
 711                 };
 712         }
 713
 714         root.removeChild( form );
 715 })();
 716
 717 (function(){
 718         // Check to see if the browser returns only elements
 719         // when doing getElementsByTagName("*")
 720
 721         // Create a fake element
 722         var div = document.createElement("div");
 723         div.appendChild( document.createComment("") );
 724
 725         // Make sure no comments are found
 726         if ( div.getElementsByTagName("*").length > 0 ) {
 727                 Expr.find.TAG = function(match, context){
 728                         var results = context.getElementsByTagName(match[1]);
 729
 730                         // Filter out possible comments
 731                         if ( match[1] === "*" ) {
 732                                 var tmp = [];
 733
 734                                 for ( var i = 0; results[i]; i++ ) {
 735                                         if ( results[i].nodeType === 1 ) {
 736                                                 tmp.push( results[i] );
 737                                         }
 738                                 }
 739
 740                                 results = tmp;
 741                         }
 742
 743                         return results;
 744                 };
 745         }
 746
 747         // Check to see if an attribute returns normalized href attributes
 748         div.innerHTML = "<a href='#'></a>";
 749         if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" &&
 750                         div.firstChild.getAttribute("href") !== "#" ) {
 751                 Expr.attrHandle.href = function(elem){
 752                         return elem.getAttribute("href", 2);
 753                 };
 754         }
 755 })();
 756
 757 if ( document.querySelectorAll ) (function(){
 758         var oldSizzle = Sizzle, div = document.createElement("div");
 759         div.innerHTML = "<p class='TEST'></p>";
 760
 761         // Safari can't handle uppercase or unicode characters when
 762         // in quirks mode.
 763         if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) {
 764                 return;
 765         }
 766
 767         Sizzle = function(query, context, extra, seed){
 768                 context = context || document;
 769
 770                 // Only use querySelectorAll on non-XML documents
 771                 // (ID selectors don't work in non-HTML documents)
 772                 if ( !seed && context.nodeType === 9 && !isXML(context) ) {
 773                         try {
 774                                 return makeArray( context.querySelectorAll(query), extra );
 775                         } catch(e){}
 776                 }
 777
 778                 return oldSizzle(query, context, extra, seed);
 779         };
 780
 781         Sizzle.find = oldSizzle.find;
 782         Sizzle.filter = oldSizzle.filter;
 783         Sizzle.selectors = oldSizzle.selectors;
 784         Sizzle.matches = oldSizzle.matches;
 785 })();
 786
 787 if ( document.getElementsByClassName && document.documentElement.getElementsByClassName ) (function(){
 788         var div = document.createElement("div");
 789         div.innerHTML = "<div class='test e'></div><div class='test'></div>";
 790
 791         // Opera can't find a second classname (in 9.6)
 792         if ( div.getElementsByClassName("e").length === 0 )
 793                 return;
 794
 795         // Safari caches class attributes, doesn't catch changes (in 3.2)
 796         div.lastChild.className = "e";
 797
 798         if ( div.getElementsByClassName("e").length === 1 )
 799                 return;
 800
 801         Expr.order.splice(1, 0, "CLASS");
 802         Expr.find.CLASS = function(match, context) {
 803                 return context.getElementsByClassName(match[1]);
 804         };
 805 })();
 806
 807 function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
 808         var sibDir = dir == "previousSibling" && !isXML;
 809         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 810                 var elem = checkSet[i];
 811                 if ( elem ) {
 812                         if ( sibDir && elem.nodeType === 1 ){
 813                                 elem.sizcache = doneName;
 814                                 elem.sizset = i;
 815                         }
 816                         elem = elem[dir];
 817                         var match = false;
 818
 819                         while ( elem ) {
 820                                 if ( elem.sizcache === doneName ) {
 821                                         match = checkSet[elem.sizset];
 822                                         break;
 823                                 }
 824
 825                                 if ( elem.nodeType === 1 && !isXML ){
 826                                         elem.sizcache = doneName;
 827                                         elem.sizset = i;
 828                                 }
 829
 830                                 if ( elem.nodeName === cur ) {
 831                                         match = elem;
 832                                         break;
 833                                 }
 834
 835                                 elem = elem[dir];
 836                         }
 837
 838                         checkSet[i] = match;
 839                 }
 840         }
 841 }
 842
 843 function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
 844         var sibDir = dir == "previousSibling" && !isXML;
 845         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 846                 var elem = checkSet[i];
 847                 if ( elem ) {
 848                         if ( sibDir && elem.nodeType === 1 ) {
 849                                 elem.sizcache = doneName;
 850                                 elem.sizset = i;
 851                         }
 852                         elem = elem[dir];
 853                         var match = false;
 854
 855                         while ( elem ) {
 856                                 if ( elem.sizcache === doneName ) {
 857                                         match = checkSet[elem.sizset];
 858                                         break;
 859                                 }
 860
 861                                 if ( elem.nodeType === 1 ) {
 862                                         if ( !isXML ) {
 863                                                 elem.sizcache = doneName;
 864                                                 elem.sizset = i;
 865                                         }
 866                                         if ( typeof cur !== "string" ) {
 867                                                 if ( elem === cur ) {
 868                                                         match = true;
 869                                                         break;
 870                                                 }
 871
 872                                         } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
 873                                                 match = elem;
 874                                                 break;
 875                                         }
 876                                 }
 877
 878                                 elem = elem[dir];
 879                         }
 880
 881                         checkSet[i] = match;
 882                 }
 883         }
 884 }
 885
 886 var contains = document.compareDocumentPosition ?  function(a, b){
 887         return a.compareDocumentPosition(b) & 16;
 888 } : function(a, b){
 889         return a !== b && (a.contains ? a.contains(b) : true);
 890 };
 891
 892 var isXML = function(elem){
 893         return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
 894                 !!elem.ownerDocument && isXML( elem.ownerDocument );
 895 };
 896
 897 var posProcess = function(selector, context){
 898         var tmpSet = [], later = "", match,
 899                 root = context.nodeType ? [context] : context;
 900
 901         // Position selectors must be done after the filter
 902         // And so must :not(positional) so we move all PSEUDOs to the end
 903         while ( (match = Expr.match.PSEUDO.exec( selector )) ) {
 904                 later += match[0];
 905                 selector = selector.replace( Expr.match.PSEUDO, "" );
 906         }
 907
 908         selector = Expr.relative[selector] ? selector + "*" : selector;
 909
 910         for ( var i = 0, l = root.length; i < l; i++ ) {
 911                 Sizzle( selector, root[i], tmpSet );
 912         }
 913
 914         return Sizzle.filter( later, tmpSet );
 915 };
 916
 917 // EXPOSE
 918 jQuery.find = Sizzle;
 919 jQuery.filter = Sizzle.filter;
 920 jQuery.expr = Sizzle.selectors;
 921 jQuery.expr[":"] = jQuery.expr.filters;
 922
 923 Sizzle.selectors.filters.hidden = function(elem){
 924         return "hidden" === elem.type ||
 925                 jQuery.css(elem, "display") === "none" ||
 926                 jQuery.css(elem, "visibility") === "hidden";
 927 };
 928
 929 Sizzle.selectors.filters.visible = function(elem){
 930         return "hidden" !== elem.type &&
 931                 jQuery.css(elem, "display") !== "none" &&
 932                 jQuery.css(elem, "visibility") !== "hidden";
 933 };
 934
 935 Sizzle.selectors.filters.animated = function(elem){
 936         return jQuery.grep(jQuery.timers, function(fn){
 937                 return elem === fn.elem;
 938         }).length;
 939 };
 940
 941 jQuery.multiFilter = function( expr, elems, not ) {
 942         if ( not ) {
 943                 expr = ":not(" + expr + ")";
 944         }
 945
 946         return Sizzle.matches(expr, elems);
 947 };
 948
 949 jQuery.dir = function( elem, dir ){
 950         var matched = [], cur = elem[dir];
 951         while ( cur && cur != document ) {
 952                 if ( cur.nodeType == 1 )
 953                         matched.push( cur );
 954                 cur = cur[dir];
 955         }
 956         return matched;
 957 };
 958
 959 jQuery.nth = function(cur, result, dir, elem){
 960         result = result || 1;
 961         var num = 0;
 962
 963         for ( ; cur; cur = cur[dir] )
 964                 if ( cur.nodeType == 1 && ++num == result )
 965                         break;
 966
 967         return cur;
 968 };
 969
 970 jQuery.sibling = function(n, elem){
 971         var r = [];
 972
 973         for ( ; n; n = n.nextSibling ) {
 974                 if ( n.nodeType == 1 && n != elem )
 975                         r.push( n );
 976         }
 977
 978         return r;
 979 };
 980
 981 return;
 982
 983 window.Sizzle = Sizzle;
 984
 985 })();