src/core.js

   1 var jQuery = (function() {
   2
   3 // Define a local copy of jQuery
   4 var jQuery = function( selector, context ) {
   5                 // The jQuery object is actually just the init constructor 'enhanced'
   6                 return new jQuery.fn.init( selector, context, rootjQuery );
   7         },
   8
   9         // Map over jQuery in case of overwrite
  10         _jQuery = window.jQuery,
  11
  12         // Map over the $ in case of overwrite
  13         _$ = window.$,
  14
  15         // A central reference to the root jQuery(document)
  16         rootjQuery,
  17
  18         // A simple way to check for HTML strings
  19         quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$/,
  20
  21         // Check if a string has a non-whitespace character in it
  22         rnotwhite = /\S/,
  23
  24         // Used for trimming whitespace
  25         trimLeft = /^\s+/,
  26         trimRight = /\s+$/,
  27
  28         // Check for non-word characters
  29         rnonword = /\W/,
  30
  31         // Check for digits
  32         rdigit = /\d/,
  33
  34         // Match a standalone tag
  35         rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/,
  36
  37         // JSON RegExp
  38         rvalidchars = /^[\],:{}\s]*$/,
  39         rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,
  40         rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,
  41         rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g,
  42
  43         // Useragent RegExp
  44         rwebkit = /(webkit)[ \/]([\w.]+)/,
  45         ropera = /(opera)(?:.*version)?[ \/]([\w.]+)/,
  46         rmsie = /(msie) ([\w.]+)/,
  47         rmozilla = /(mozilla)(?:.*? rv:([\w.]+))?/,
  48
  49         // Keep a UserAgent string for use with jQuery.browser
  50         userAgent = navigator.userAgent,
  51
  52         // For matching the engine and version of the browser
  53         browserMatch,
  54
  55         // Has the ready events already been bound?
  56         readyBound = false,
  57
  58         // The deferred used on DOM ready
  59         readyList,
  60
  61         // Promise methods
  62         promiseMethods = "then done fail isResolved isRejected promise".split( " " ),
  63
  64         // The ready event handler
  65         DOMContentLoaded,
  66
  67         // Save a reference to some core methods
  68         toString = Object.prototype.toString,
  69         hasOwn = Object.prototype.hasOwnProperty,
  70         push = Array.prototype.push,
  71         slice = Array.prototype.slice,
  72         trim = String.prototype.trim,
  73         indexOf = Array.prototype.indexOf,
  74
  75         // [[Class]] -> type pairs
  76         class2type = {};
  77
  78 jQuery.fn = jQuery.prototype = {
  79         constructor: jQuery,
  80         init: function( selector, context, rootjQuery ) {
  81                 var match, elem, ret, doc;
  82
  83                 // Handle $(""), $(null), or $(undefined)
  84                 if ( !selector ) {
  85                         return this;
  86                 }
  87
  88                 // Handle $(DOMElement)
  89                 if ( selector.nodeType ) {
  90                         this.context = this[0] = selector;
  91                         this.length = 1;
  92                         return this;
  93                 }
  94
  95                 // Handle HTML strings
  96                 if ( typeof selector === "string" ) {
  97                         // Are we dealing with HTML string
  98                         if ( (match = quickExpr.exec( selector )) ) {
  99                                 context = context instanceof jQuery ? context[0] : context;
 100                                 doc = (context ? context.ownerDocument || context : document);
 101
 102                                 // If a single string is passed in and it's a single tag
 103                                 // just do a createElement and skip the rest
 104                                 ret = rsingleTag.exec( selector );
 105
 106                                 if ( ret ) {
 107                                         if ( jQuery.isPlainObject( context ) ) {
 108                                                 selector = [ document.createElement( ret[1] ) ];
 109                                                 jQuery.fn.attr.call( selector, context, true );
 110
 111                                         } else {
 112                                                 selector = [ doc.createElement( ret[1] ) ];
 113                                         }
 114
 115                                 } else {
 116                                         ret = jQuery.buildFragment( [ match[1] ], [ doc ] );
 117                                         selector = (ret.cacheable ? jQuery(ret.fragment).clone()[0] : ret.fragment).childNodes;
 118                                 }
 119
 120                                 return jQuery.merge( this, selector );
 121
 122                         // HANDLE: $(expr, $(...))
 123                         } else if ( !context || context.jquery ) {
 124                                 return (context || rootjQuery).find( selector );
 125
 126                         // HANDLE: $(expr, context)
 127                         // (which is just equivalent to: $(context).find(expr)
 128                         } else {
 129                                 return this.constructor( context ).find( selector );
 130                         }
 131
 132                 // HANDLE: $(function)
 133                 // Shortcut for document ready
 134                 } else if ( jQuery.isFunction( selector ) ) {
 135                         return rootjQuery.ready( selector );
 136                 }
 137
 138                 if (selector.selector !== undefined) {
 139                         this.selector = selector.selector;
 140                         this.context = selector.context;
 141                 }
 142
 143                 return jQuery.makeArray( selector, this );
 144         },
 145
 146         // Start with an empty selector
 147         selector: "",
 148
 149         // The current version of jQuery being used
 150         jquery: "@VERSION",
 151
 152         // The default length of a jQuery object is 0
 153         length: 0,
 154
 155         // The number of elements contained in the matched element set
 156         size: function() {
 157                 return this.length;
 158         },
 159
 160         toArray: function() {
 161                 return slice.call( this, 0 );
 162         },
 163
 164         // Get the Nth element in the matched element set OR
 165         // Get the whole matched element set as a clean array
 166         get: function( num ) {
 167                 return num == null ?
 168
 169                         // Return a 'clean' array
 170                         this.toArray() :
 171
 172                         // Return just the object
 173                         ( num < 0 ? this[ this.length + num ] : this[ num ] );
 174         },
 175
 176         // Take an array of elements and push it onto the stack
 177         // (returning the new matched element set)
 178         pushStack: function( elems, name, selector ) {
 179                 // Build a new jQuery matched element set
 180                 var ret = this.constructor();
 181
 182                 if ( jQuery.isArray( elems ) ) {
 183                         push.apply( ret, elems );
 184
 185                 } else {
 186                         jQuery.merge( ret, elems );
 187                 }
 188
 189                 // Add the old object onto the stack (as a reference)
 190                 ret.prevObject = this;
 191
 192                 ret.context = this.context;
 193
 194                 if ( name === "find" ) {
 195                         ret.selector = this.selector + (this.selector ? " " : "") + selector;
 196                 } else if ( name ) {
 197                         ret.selector = this.selector + "." + name + "(" + selector + ")";
 198                 }
 199
 200                 // Return the newly-formed element set
 201                 return ret;
 202         },
 203
 204         // Execute a callback for every element in the matched set.
 205         // (You can seed the arguments with an array of args, but this is
 206         // only used internally.)
 207         each: function( callback, args ) {
 208                 return jQuery.each( this, callback, args );
 209         },
 210
 211         ready: function() {
 212                 // Attach the listeners
 213                 jQuery.bindReady();
 214
 215                 // Change ready & apply
 216                 return ( jQuery.fn.ready = readyList.done ).apply( this , arguments );
 217         },
 218
 219         eq: function( i ) {
 220                 return i === -1 ?
 221                         this.slice( i ) :
 222                         this.slice( i, +i + 1 );
 223         },
 224
 225         first: function() {
 226                 return this.eq( 0 );
 227         },
 228
 229         last: function() {
 230                 return this.eq( -1 );
 231         },
 232
 233         slice: function() {
 234                 return this.pushStack( slice.apply( this, arguments ),
 235                         "slice", slice.call(arguments).join(",") );
 236         },
 237
 238         map: function( callback ) {
 239                 return this.pushStack( jQuery.map(this, function( elem, i ) {
 240                         return callback.call( elem, i, elem );
 241                 }));
 242         },
 243
 244         end: function() {
 245                 return this.prevObject || this.constructor(null);
 246         },
 247
 248         // For internal use only.
 249         // Behaves like an Array's method, not like a jQuery method.
 250         push: push,
 251         sort: [].sort,
 252         splice: [].splice
 253 };
 254
 255 // Give the init function the jQuery prototype for later instantiation
 256 jQuery.fn.init.prototype = jQuery.fn;
 257
 258 jQuery.extend = jQuery.fn.extend = function() {
 259          var options, name, src, copy, copyIsArray, clone,
 260                 target = arguments[0] || {},
 261                 i = 1,
 262                 length = arguments.length,
 263                 deep = false;
 264
 265         // Handle a deep copy situation
 266         if ( typeof target === "boolean" ) {
 267                 deep = target;
 268                 target = arguments[1] || {};
 269                 // skip the boolean and the target
 270                 i = 2;
 271         }
 272
 273         // Handle case when target is a string or something (possible in deep copy)
 274         if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
 275                 target = {};
 276         }
 277
 278         // extend jQuery itself if only one argument is passed
 279         if ( length === i ) {
 280                 target = this;
 281                 --i;
 282         }
 283
 284         for ( ; i < length; i++ ) {
 285                 // Only deal with non-null/undefined values
 286                 if ( (options = arguments[ i ]) != null ) {
 287                         // Extend the base object
 288                         for ( name in options ) {
 289                                 src = target[ name ];
 290                                 copy = options[ name ];
 291
 292                                 // Prevent never-ending loop
 293                                 if ( target === copy ) {
 294                                         continue;
 295                                 }
 296
 297                                 // Recurse if we're merging plain objects or arrays
 298                                 if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
 299                                         if ( copyIsArray ) {
 300                                                 copyIsArray = false;
 301                                                 clone = src && jQuery.isArray(src) ? src : [];
 302
 303                                         } else {
 304                                                 clone = src && jQuery.isPlainObject(src) ? src : {};
 305                                         }
 306
 307                                         // Never move original objects, clone them
 308                                         target[ name ] = jQuery.extend( deep, clone, copy );
 309
 310                                 // Don't bring in undefined values
 311                                 } else if ( copy !== undefined ) {
 312                                         target[ name ] = copy;
 313                                 }
 314                         }
 315                 }
 316         }
 317
 318         // Return the modified object
 319         return target;
 320 };
 321
 322 jQuery.extend({
 323         noConflict: function( deep ) {
 324                 window.$ = _$;
 325
 326                 if ( deep ) {
 327                         window.jQuery = _jQuery;
 328                 }
 329
 330                 return jQuery;
 331         },
 332
 333         // Is the DOM ready to be used? Set to true once it occurs.
 334         isReady: false,
 335
 336         // A counter to track how many items to wait for before
 337         // the ready event fires. See #6781
 338         readyWait: 1,
 339
 340         // Handle when the DOM is ready
 341         ready: function( wait ) {
 342                 // A third-party is pushing the ready event forwards
 343                 if ( wait === true ) {
 344                         jQuery.readyWait--;
 345                 }
 346
 347                 // Make sure that the DOM is not already loaded
 348                 if ( !jQuery.readyWait || (wait !== true && !jQuery.isReady) ) {
 349                         // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
 350                         if ( !document.body ) {
 351                                 return setTimeout( jQuery.ready, 1 );
 352                         }
 353
 354                         // Remember that the DOM is ready
 355                         jQuery.isReady = true;
 356
 357                         // If a normal DOM Ready event fired, decrement, and wait if need be
 358                         if ( wait !== true && --jQuery.readyWait > 0 ) {
 359                                 return;
 360                         }
 361
 362                         // If there are functions bound, to execute
 363                         readyList.fire( document , [ jQuery ] );
 364
 365                         // Trigger any bound ready events
 366                         if ( jQuery.fn.trigger ) {
 367                                 jQuery( document ).trigger( "ready" ).unbind( "ready" );
 368                         }
 369                 }
 370         },
 371
 372         bindReady: function() {
 373                 if ( readyBound ) {
 374                         return;
 375                 }
 376
 377                 readyBound = true;
 378
 379                 // Catch cases where $(document).ready() is called after the
 380                 // browser event has already occurred.
 381                 if ( document.readyState === "complete" ) {
 382                         // Handle it asynchronously to allow scripts the opportunity to delay ready
 383                         return setTimeout( jQuery.ready, 1 );
 384                 }
 385
 386                 // Mozilla, Opera and webkit nightlies currently support this event
 387                 if ( document.addEventListener ) {
 388                         // Use the handy event callback
 389                         document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false );
 390
 391                         // A fallback to window.onload, that will always work
 392                         window.addEventListener( "load", jQuery.ready, false );
 393
 394                 // If IE event model is used
 395                 } else if ( document.attachEvent ) {
 396                         // ensure firing before onload,
 397                         // maybe late but safe also for iframes
 398                         document.attachEvent("onreadystatechange", DOMContentLoaded);
 399
 400                         // A fallback to window.onload, that will always work
 401                         window.attachEvent( "onload", jQuery.ready );
 402
 403                         // If IE and not a frame
 404                         // continually check to see if the document is ready
 405                         var toplevel = false;
 406
 407                         try {
 408                                 toplevel = window.frameElement == null;
 409                         } catch(e) {}
 410
 411                         if ( document.documentElement.doScroll && toplevel ) {
 412                                 doScrollCheck();
 413                         }
 414                 }
 415         },
 416
 417         // See test/unit/core.js for details concerning isFunction.
 418         // Since version 1.3, DOM methods and functions like alert
 419         // aren't supported. They return false on IE (#2968).
 420         isFunction: function( obj ) {
 421                 return jQuery.type(obj) === "function";
 422         },
 423
 424         isArray: Array.isArray || function( obj ) {
 425                 return jQuery.type(obj) === "array";
 426         },
 427
 428         // A crude way of determining if an object is a window
 429         isWindow: function( obj ) {
 430                 return obj && typeof obj === "object" && "setInterval" in obj;
 431         },
 432
 433         isNaN: function( obj ) {
 434                 return obj == null || !rdigit.test( obj ) || isNaN( obj );
 435         },
 436
 437         type: function( obj ) {
 438                 return obj == null ?
 439                         String( obj ) :
 440                         class2type[ toString.call(obj) ] || "object";
 441         },
 442
 443         isPlainObject: function( obj ) {
 444                 // Must be an Object.
 445                 // Because of IE, we also have to check the presence of the constructor property.
 446                 // Make sure that DOM nodes and window objects don't pass through, as well
 447                 if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
 448                         return false;
 449                 }
 450
 451                 // Not own constructor property must be Object
 452                 if ( obj.constructor &&
 453                         !hasOwn.call(obj, "constructor") &&
 454                         !hasOwn.call(obj.constructor.prototype, "isPrototypeOf") ) {
 455                         return false;
 456                 }
 457
 458                 // Own properties are enumerated firstly, so to speed up,
 459                 // if last one is own, then all properties are own.
 460
 461                 var key;
 462                 for ( key in obj ) {}
 463
 464                 return key === undefined || hasOwn.call( obj, key );
 465         },
 466
 467         isEmptyObject: function( obj ) {
 468                 for ( var name in obj ) {
 469                         return false;
 470                 }
 471                 return true;
 472         },
 473
 474         error: function( msg ) {
 475                 throw msg;
 476         },
 477
 478         parseJSON: function( data ) {
 479                 if ( typeof data !== "string" || !data ) {
 480                         return null;
 481                 }
 482
 483                 // Make sure leading/trailing whitespace is removed (IE can't handle it)
 484                 data = jQuery.trim( data );
 485
 486                 // Make sure the incoming data is actual JSON
 487                 // Logic borrowed from http://json.org/json2.js
 488                 if ( rvalidchars.test(data.replace(rvalidescape, "@")
 489                         .replace(rvalidtokens, "]")
 490                         .replace(rvalidbraces, "")) ) {
 491
 492                         // Try to use the native JSON parser first
 493                         return window.JSON && window.JSON.parse ?
 494                                 window.JSON.parse( data ) :
 495                                 (new Function("return " + data))();
 496
 497                 } else {
 498                         jQuery.error( "Invalid JSON: " + data );
 499                 }
 500         },
 501
 502         // Cross-browser xml parsing
 503         // (xml & tmp used internally)
 504         parseXML: function( data , xml , tmp ) {
 505
 506                 if ( window.DOMParser ) { // Standard
 507                         tmp = new DOMParser();
 508                         xml = tmp.parseFromString( data , "text/xml" );
 509                 } else { // IE
 510                         xml = new ActiveXObject( "Microsoft.XMLDOM" );
 511                         xml.async = "false";
 512                         xml.loadXML( data );
 513                 }
 514
 515                 tmp = xml.documentElement;
 516
 517                 if ( ! tmp || ! tmp.nodeName || tmp.nodeName === "parsererror" ) {
 518                         jQuery.error( "Invalid XML: " + data );
 519                 }
 520
 521                 return xml;
 522         },
 523
 524         noop: function() {},
 525
 526         // Evalulates a script in a global context
 527         globalEval: function( data ) {
 528                 if ( data && rnotwhite.test(data) ) {
 529                         // Inspired by code by Andrea Giammarchi
 530                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 531                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 532                                 script = document.createElement("script");
 533
 534                         script.type = "text/javascript";
 535
 536                         if ( jQuery.support.scriptEval() ) {
 537                                 script.appendChild( document.createTextNode( data ) );
 538                         } else {
 539                                 script.text = data;
 540                         }
 541
 542                         // Use insertBefore instead of appendChild to circumvent an IE6 bug.
 543                         // This arises when a base node is used (#2709).
 544                         head.insertBefore( script, head.firstChild );
 545                         head.removeChild( script );
 546                 }
 547         },
 548
 549         nodeName: function( elem, name ) {
 550                 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
 551         },
 552
 553         // args is for internal usage only
 554         each: function( object, callback, args ) {
 555                 var name, i = 0,
 556                         length = object.length,
 557                         isObj = length === undefined || jQuery.isFunction(object);
 558
 559                 if ( args ) {
 560                         if ( isObj ) {
 561                                 for ( name in object ) {
 562                                         if ( callback.apply( object[ name ], args ) === false ) {
 563                                                 break;
 564                                         }
 565                                 }
 566                         } else {
 567                                 for ( ; i < length; ) {
 568                                         if ( callback.apply( object[ i++ ], args ) === false ) {
 569                                                 break;
 570                                         }
 571                                 }
 572                         }
 573
 574                 // A special, fast, case for the most common use of each
 575                 } else {
 576                         if ( isObj ) {
 577                                 for ( name in object ) {
 578                                         if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
 579                                                 break;
 580                                         }
 581                                 }
 582                         } else {
 583                                 for ( var value = object[0];
 584                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
 585                         }
 586                 }
 587
 588                 return object;
 589         },
 590
 591         // Use native String.trim function wherever possible
 592         trim: trim ?
 593                 function( text ) {
 594                         return text == null ?
 595                                 "" :
 596                                 trim.call( text );
 597                 } :
 598
 599                 // Otherwise use our own trimming functionality
 600                 function( text ) {
 601                         return text == null ?
 602                                 "" :
 603                                 text.toString().replace( trimLeft, "" ).replace( trimRight, "" );
 604                 },
 605
 606         // results is for internal usage only
 607         makeArray: function( array, results ) {
 608                 var ret = results || [];
 609
 610                 if ( array != null ) {
 611                         // The window, strings (and functions) also have 'length'
 612                         // The extra typeof function check is to prevent crashes
 613                         // in Safari 2 (See: #3039)
 614                         // Tweaked logic slightly to handle Blackberry 4.7 RegExp issues #6930
 615                         var type = jQuery.type(array);
 616
 617                         if ( array.length == null || type === "string" || type === "function" || type === "regexp" || jQuery.isWindow( array ) ) {
 618                                 push.call( ret, array );
 619                         } else {
 620                                 jQuery.merge( ret, array );
 621                         }
 622                 }
 623
 624                 return ret;
 625         },
 626
 627         inArray: function( elem, array ) {
 628                 if ( array.indexOf ) {
 629                         return array.indexOf( elem );
 630                 }
 631
 632                 for ( var i = 0, length = array.length; i < length; i++ ) {
 633                         if ( array[ i ] === elem ) {
 634                                 return i;
 635                         }
 636                 }
 637
 638                 return -1;
 639         },
 640
 641         merge: function( first, second ) {
 642                 var i = first.length,
 643                         j = 0;
 644
 645                 if ( typeof second.length === "number" ) {
 646                         for ( var l = second.length; j < l; j++ ) {
 647                                 first[ i++ ] = second[ j ];
 648                         }
 649
 650                 } else {
 651                         while ( second[j] !== undefined ) {
 652                                 first[ i++ ] = second[ j++ ];
 653                         }
 654                 }
 655
 656                 first.length = i;
 657
 658                 return first;
 659         },
 660
 661         grep: function( elems, callback, inv ) {
 662                 var ret = [], retVal;
 663                 inv = !!inv;
 664
 665                 // Go through the array, only saving the items
 666                 // that pass the validator function
 667                 for ( var i = 0, length = elems.length; i < length; i++ ) {
 668                         retVal = !!callback( elems[ i ], i );
 669                         if ( inv !== retVal ) {
 670                                 ret.push( elems[ i ] );
 671                         }
 672                 }
 673
 674                 return ret;
 675         },
 676
 677         // arg is for internal usage only
 678         map: function( elems, callback, arg ) {
 679                 var ret = [], value;
 680
 681                 // Go through the array, translating each of the items to their
 682                 // new value (or values).
 683                 for ( var i = 0, length = elems.length; i < length; i++ ) {
 684                         value = callback( elems[ i ], i, arg );
 685
 686                         if ( value != null ) {
 687                                 ret[ ret.length ] = value;
 688                         }
 689                 }
 690
 691                 // Flatten any nested arrays
 692                 return ret.concat.apply( [], ret );
 693         },
 694
 695         // A global GUID counter for objects
 696         guid: 1,
 697
 698         proxy: function( fn, proxy, thisObject ) {
 699                 if ( arguments.length === 2 ) {
 700                         if ( typeof proxy === "string" ) {
 701                                 thisObject = fn;
 702                                 fn = thisObject[ proxy ];
 703                                 proxy = undefined;
 704
 705                         } else if ( proxy && !jQuery.isFunction( proxy ) ) {
 706                                 thisObject = proxy;
 707                                 proxy = undefined;
 708                         }
 709                 }
 710
 711                 if ( !proxy && fn ) {
 712                         proxy = function() {
 713                                 return fn.apply( thisObject || this, arguments );
 714                         };
 715                 }
 716
 717                 // Set the guid of unique handler to the same of original handler, so it can be removed
 718                 if ( fn ) {
 719                         proxy.guid = fn.guid = fn.guid || proxy.guid || jQuery.guid++;
 720                 }
 721
 722                 // So proxy can be declared as an argument
 723                 return proxy;
 724         },
 725
 726         // Mutifunctional method to get and set values to a collection
 727         // The value/s can be optionally by executed if its a function
 728         access: function( elems, key, value, exec, fn, pass ) {
 729                 var length = elems.length;
 730
 731                 // Setting many attributes
 732                 if ( typeof key === "object" ) {
 733                         for ( var k in key ) {
 734                                 jQuery.access( elems, k, key[k], exec, fn, value );
 735                         }
 736                         return elems;
 737                 }
 738
 739                 // Setting one attribute
 740                 if ( value !== undefined ) {
 741                         // Optionally, function values get executed if exec is true
 742                         exec = !pass && exec && jQuery.isFunction(value);
 743
 744                         for ( var i = 0; i < length; i++ ) {
 745                                 fn( elems[i], key, exec ? value.call( elems[i], i, fn( elems[i], key ) ) : value, pass );
 746                         }
 747
 748                         return elems;
 749                 }
 750
 751                 // Getting an attribute
 752                 return length ? fn( elems[0], key ) : undefined;
 753         },
 754
 755         now: function() {
 756                 return (new Date()).getTime();
 757         },
 758
 759         // Create a simple deferred (one callbacks list)
 760         _Deferred: function() {
 761
 762                 var // callbacks list
 763                         callbacks = [],
 764                         // stored [ context , args ]
 765                         fired,
 766                         // to avoid firing when already doing so
 767                         firing,
 768                         // flag to know if the deferred has been cancelled
 769                         cancelled,
 770                         // the deferred itself
 771                         deferred  = {
 772
 773                                 // done( f1, f2, ...)
 774                                 done: function () {
 775
 776                                         if ( ! cancelled ) {
 777
 778                                                 var args = arguments,
 779                                                         i,
 780                                                         length,
 781                                                         elem,
 782                                                         type,
 783                                                         _fired;
 784
 785                                                 if ( fired ) {
 786                                                         _fired = fired;
 787                                                         fired = 0;
 788                                                 }
 789
 790                                                 for ( i = 0, length = args.length ; i < length ; i++ ) {
 791                                                         elem = args[ i ];
 792                                                         type = jQuery.type( elem );
 793                                                         if ( type === "array" ) {
 794                                                                 deferred.done.apply( deferred , elem );
 795                                                         } else if ( type === "function" ) {
 796                                                                 callbacks.push( elem );
 797                                                         }
 798                                                 }
 799
 800                                                 if ( _fired ) {
 801                                                         deferred.fire( _fired[ 0 ] , _fired[ 1 ] );
 802                                                 }
 803                                         }
 804
 805                                         return this;
 806                                 },
 807
 808                                 // resolve with given context and args
 809                                 fire: function( context , args ) {
 810                                         if ( ! cancelled && ! fired && ! firing ) {
 811
 812                                                 firing = 1;
 813
 814                                                 try {
 815                                                         while( callbacks[ 0 ] ) {
 816                                                                 callbacks.shift().apply( context , args );
 817                                                         }
 818                                                 }
 819                                                 finally {
 820                                                         fired = [ context , args ];
 821                                                         firing = 0;
 822                                                 }
 823                                         }
 824                                         return this;
 825                                 },
 826
 827                                 // resolve with this as context and given arguments
 828                                 resolve: function() {
 829                                         deferred.fire( jQuery.isFunction( this.promise ) ? this.promise() : this , arguments );
 830                                         return this;
 831                                 },
 832
 833                                 // Has this deferred been resolved?
 834                                 isResolved: function() {
 835                                         return !!( firing || fired );
 836                                 },
 837
 838                                 // Cancel
 839                                 cancel: function() {
 840                                         cancelled = 1;
 841                                         callbacks = [];
 842                                         return this;
 843                                 }
 844                         };
 845
 846                 return deferred;
 847         },
 848
 849         // Full fledged deferred (two callbacks list)
 850         // Typical success/error system
 851         Deferred: function( func ) {
 852
 853                 var deferred = jQuery._Deferred(),
 854                         failDeferred = jQuery._Deferred(),
 855                         promise;
 856
 857                 // Add errorDeferred methods, then and promise
 858                 jQuery.extend( deferred , {
 859
 860                         then: function( doneCallbacks , failCallbacks ) {
 861                                 deferred.done( doneCallbacks ).fail( failCallbacks );
 862                                 return this;
 863                         },
 864                         fail: failDeferred.done,
 865                         fireReject: failDeferred.fire,
 866                         reject: failDeferred.resolve,
 867                         isRejected: failDeferred.isResolved,
 868                         // Get a promise for this deferred
 869                         // If obj is provided, the promise aspect is added to the object
 870                         // (i is used internally)
 871                         promise: function( obj , i ) {
 872                                 if ( obj == null ) {
 873                                         if ( promise ) {
 874                                                 return promise;
 875                                         }
 876                                         promise = obj = {};
 877                                 }
 878                                 i = promiseMethods.length;
 879                                 while( i-- ) {
 880                                         obj[ promiseMethods[ i ] ] = deferred[ promiseMethods[ i ] ];
 881                                 }
 882                                 return obj;
 883                         }
 884
 885                 } );
 886
 887                 // Make sure only one callback list will be used
 888                 deferred.then( failDeferred.cancel , deferred.cancel );
 889
 890                 // Unexpose cancel
 891                 delete deferred.cancel;
 892
 893                 // Call given func if any
 894                 if ( func ) {
 895                         func.call( deferred , deferred );
 896                 }
 897
 898                 return deferred;
 899         },
 900
 901         // Deferred helper
 902         when: function( object ) {
 903                 var args = arguments,
 904                         length = args.length,
 905                         deferred = length <= 1 && object && jQuery.isFunction( object.promise ) ?
 906                                 object :
 907                                 jQuery.Deferred(),
 908                         promise = deferred.promise(),
 909                         resolveArray;
 910
 911                 if ( length > 1 ) {
 912                         resolveArray = new Array( length );
 913                         jQuery.each( args, function( index, element, args ) {
 914                                 jQuery.when( element ).done( function( value ) {
 915                                         args = arguments;
 916                                         resolveArray[ index ] = args.length > 1 ? slice.call( args , 0 ) : value;
 917                                         if( ! --length ) {
 918                                                 deferred.fire( promise, resolveArray );
 919                                         }
 920                                 }).fail( function() {
 921                                         deferred.fireReject( promise, arguments );
 922                                 });
 923                                 return !deferred.isRejected();
 924                         });
 925                 } else if ( deferred !== object ) {
 926                         deferred.resolve( object );
 927                 }
 928                 return promise;
 929         },
 930
 931         // Use of jQuery.browser is frowned upon.
 932         // More details: http://docs.jquery.com/Utilities/jQuery.browser
 933         uaMatch: function( ua ) {
 934                 ua = ua.toLowerCase();
 935
 936                 var match = rwebkit.exec( ua ) ||
 937                         ropera.exec( ua ) ||
 938                         rmsie.exec( ua ) ||
 939                         ua.indexOf("compatible") < 0 && rmozilla.exec( ua ) ||
 940                         [];
 941
 942                 return { browser: match[1] || "", version: match[2] || "0" };
 943         },
 944
 945         subclass: function(){
 946                 function jQuerySubclass( selector, context ) {
 947                         return new jQuerySubclass.fn.init( selector, context );
 948                 }
 949                 jQuerySubclass.superclass = this;
 950                 jQuerySubclass.fn = jQuerySubclass.prototype = this();
 951                 jQuerySubclass.fn.constructor = jQuerySubclass;
 952                 jQuerySubclass.subclass = this.subclass;
 953                 jQuerySubclass.fn.init = function init( selector, context ) {
 954                         if (context && context instanceof jQuery && !(context instanceof jQuerySubclass)){
 955                                 context = jQuerySubclass(context);
 956                         }
 957                         return jQuery.fn.init.call( this, selector, context, rootjQuerySubclass );
 958                 };
 959                 jQuerySubclass.fn.init.prototype = jQuerySubclass.fn;
 960                 var rootjQuerySubclass = jQuerySubclass(document);
 961                 return jQuerySubclass;
 962         },
 963
 964         browser: {}
 965 });
 966
 967 // Create readyList deferred
 968 readyList = jQuery._Deferred();
 969
 970 // Populate the class2type map
 971 jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) {
 972         class2type[ "[object " + name + "]" ] = name.toLowerCase();
 973 });
 974
 975 browserMatch = jQuery.uaMatch( userAgent );
 976 if ( browserMatch.browser ) {
 977         jQuery.browser[ browserMatch.browser ] = true;
 978         jQuery.browser.version = browserMatch.version;
 979 }
 980
 981 // Deprecated, use jQuery.browser.webkit instead
 982 if ( jQuery.browser.webkit ) {
 983         jQuery.browser.safari = true;
 984 }
 985
 986 if ( indexOf ) {
 987         jQuery.inArray = function( elem, array ) {
 988                 return indexOf.call( array, elem );
 989         };
 990 }
 991
 992 // IE doesn't match non-breaking spaces with \s
 993 if ( rnotwhite.test( "\xA0" ) ) {
 994         trimLeft = /^[\s\xA0]+/;
 995         trimRight = /[\s\xA0]+$/;
 996 }
 997
 998 // All jQuery objects should point back to these
 999 rootjQuery = jQuery(document);
1000
1001 // Cleanup functions for the document ready method
1002 if ( document.addEventListener ) {
1003         DOMContentLoaded = function() {
1004                 document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
1005                 jQuery.ready();
1006         };
1007
1008 } else if ( document.attachEvent ) {
1009         DOMContentLoaded = function() {
1010                 // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
1011                 if ( document.readyState === "complete" ) {
1012                         document.detachEvent( "onreadystatechange", DOMContentLoaded );
1013                         jQuery.ready();
1014                 }
1015         };
1016 }
1017
1018 // The DOM ready check for Internet Explorer
1019 function doScrollCheck() {
1020         if ( jQuery.isReady ) {
1021                 return;
1022         }
1023
1024         try {
1025                 // If IE is used, use the trick by Diego Perini
1026                 // http://javascript.nwbox.com/IEContentLoaded/
1027                 document.documentElement.doScroll("left");
1028         } catch(e) {
1029                 setTimeout( doScrollCheck, 1 );
1030                 return;
1031         }
1032
1033         // and execute any waiting functions
1034         jQuery.ready();
1035 }
1036
1037 // Expose jQuery to the global object
1038 return (window.jQuery = window.$ = jQuery);
1039
1040 })();