src/event.js

   1 /*
   2  * A number of helper functions used for managing events.
   3  * Many of the ideas behind this code originated from
   4  * Dean Edwards' addEvent library.
   5  */
   6 jQuery.event = {
   7
   8         // Bind an event to an element
   9         // Original by Dean Edwards
  10         add: function( elem, types, handler, data ) {
  11                 if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
  12                         return;
  13                 }
  14
  15                 // For whatever reason, IE has trouble passing the window object
  16                 // around, causing it to be cloned in the process
  17                 if ( elem.setInterval && ( elem !== window && !elem.frameElement ) ) {
  18                         elem = window;
  19                 }
  20
  21                 // Make sure that the function being executed has a unique ID
  22                 if ( !handler.guid ) {
  23                         handler.guid = this.guid++;
  24                 }
  25
  26                 // if data is passed, bind to handler
  27                 if ( data !== undefined ) {
  28                         // Create temporary function pointer to original handler
  29                         var fn = handler;
  30
  31                         // Create unique handler function, wrapped around original handler
  32                         handler = this.proxy( fn );
  33
  34                         // Store data in unique handler
  35                         handler.data = data;
  36                 }
  37
  38                 // Init the element's event structure
  39                 var events = jQuery.data( elem, "events" ) || jQuery.data( elem, "events", {} ),
  40                         handle = jQuery.data( elem, "handle" ) || jQuery.data( elem, "handle", function() {
  41                                 // Handle the second event of a trigger and when
  42                                 // an event is called after a page has unloaded
  43                                 return typeof jQuery !== "undefined" && !jQuery.event.triggered ?
  44                                         jQuery.event.handle.apply( arguments.callee.elem, arguments ) :
  45                                         undefined;
  46                         });
  47                 // Add elem as a property of the handle function
  48                 // This is to prevent a memory leak with non-native
  49                 // event in IE.
  50                 handle.elem = elem;
  51
  52                 // Handle multiple events separated by a space
  53                 // jQuery(...).bind("mouseover mouseout", fn);
  54                 types = types.split( /\s+/ );
  55                 var type, i=0;
  56                 while ( (type = types[ i++ ]) ) {
  57                         // Namespaced event handlers
  58                         var namespaces = type.split(".");
  59                         type = namespaces.shift();
  60                         handler.type = namespaces.slice(0).sort().join(".");
  61
  62                         // Get the current list of functions bound to this event
  63                         var handlers = events[ type ],
  64                                 special = this.special[ type ] || {};
  65
  66                         if ( special.add ) {
  67                                 var modifiedHandler = special.add.call( elem, handler, data, namespaces );
  68                                 if ( modifiedHandler && jQuery.isFunction( modifiedHandler ) ) {
  69                                         modifiedHandler.guid = modifiedHandler.guid || handler.guid;
  70                                         handler = modifiedHandler;
  71                                 }
  72                         }
  73
  74                         // Init the event handler queue
  75                         if ( !handlers ) {
  76                                 handlers = events[ type ] = {};
  77
  78                                 // Check for a special event handler
  79                                 // Only use addEventListener/attachEvent if the special
  80                                 // events handler returns false
  81                                 if ( !special.setup || special.setup.call( elem, data, namespaces ) === false ) {
  82                                         // Bind the global event handler to the element
  83                                         if ( elem.addEventListener ) {
  84                                                 elem.addEventListener( type, handle, false );
  85                                         } else if ( elem.attachEvent ) {
  86                                                 elem.attachEvent( "on" + type, handle );
  87                                         }
  88                                 }
  89                         }
  90
  91                         // Add the function to the element's handler list
  92                         handlers[ handler.guid ] = handler;
  93
  94                         // Keep track of which events have been used, for global triggering
  95                         this.global[ type ] = true;
  96                 }
  97
  98                 // Nullify elem to prevent memory leaks in IE
  99                 elem = null;
 100         },
 101
 102         guid: 1,
 103         global: {},
 104
 105         // Detach an event or set of events from an element
 106         remove: function( elem, types, handler ) {
 107                 // don't do events on text and comment nodes
 108                 if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
 109                         return;
 110                 }
 111
 112                 var events = jQuery.data( elem, "events" ), ret, type;
 113
 114                 if ( events ) {
 115                         // Unbind all events for the element
 116                         if ( types === undefined || (typeof types === "string" && types.charAt(0) === ".") ) {
 117                                 for ( type in events ) {
 118                                         this.remove( elem, type + (types || "") );
 119                                 }
 120                         } else {
 121                                 // types is actually an event object here
 122                                 if ( types.type ) {
 123                                         handler = types.handler;
 124                                         types = types.type;
 125                                 }
 126
 127                                 // Handle multiple events seperated by a space
 128                                 // jQuery(...).unbind("mouseover mouseout", fn);
 129                                 types = types.split(/\s+/);
 130                                 var i = 0;
 131                                 while ( (type = types[ i++ ]) ) {
 132                                         // Namespaced event handlers
 133                                         var namespaces = type.split(".");
 134                                         type = namespaces.shift();
 135                                         var all = !namespaces.length,
 136                                                 namespace = new RegExp("(^|\\.)" + namespaces.slice().sort().join("\\.(?:.*\\.)?") + "(\\.|$)"),
 137                                                 special = this.special[ type ] || {};
 138
 139                                         if ( events[ type ] ) {
 140                                                 // remove the given handler for the given type
 141                                                 if ( handler ) {
 142                                                         delete events[ type ][ handler.guid ];
 143
 144                                                 // remove all handlers for the given type
 145                                                 } else {
 146                                                         for ( var handle in events[ type ] ) {
 147                                                                 // Handle the removal of namespaced events
 148                                                                 if ( all || namespace.test( events[ type ][ handle ].type ) ) {
 149                                                                         delete events[ type ][ handle ];
 150                                                                 }
 151                                                         }
 152                                                 }
 153
 154                                                 if ( special.remove ) {
 155                                                         special.remove.call( elem, namespaces );
 156                                                 }
 157
 158                                                 // remove generic event handler if no more handlers exist
 159                                                 for ( ret in events[ type ] ) {
 160                                                         break;
 161                                                 }
 162                                                 if ( !ret ) {
 163                                                         if ( !special.teardown || special.teardown.call( elem, namespaces ) === false ) {
 164                                                                 if ( elem.removeEventListener ) {
 165                                                                         elem.removeEventListener( type, jQuery.data( elem, "handle" ), false );
 166                                                                 } else if ( elem.detachEvent ) {
 167                                                                         elem.detachEvent( "on" + type, jQuery.data( elem, "handle" ) );
 168                                                                 }
 169                                                         }
 170                                                         ret = null;
 171                                                         delete events[ type ];
 172                                                 }
 173                                         }
 174                                 }
 175                         }
 176
 177                         // Remove the expando if it's no longer used
 178                         for ( ret in events ) {
 179                                 break;
 180                         }
 181                         if ( !ret ) {
 182                                 var handle = jQuery.data( elem, "handle" );
 183                                 if ( handle ) {
 184                                         handle.elem = null;
 185                                 }
 186                                 jQuery.removeData( elem, "events" );
 187                                 jQuery.removeData( elem, "handle" );
 188                         }
 189                 }
 190         },
 191
 192         // bubbling is internal
 193         trigger: function( event, data, elem /*, bubbling */ ) {
 194                 // Event object or event type
 195                 var type = event.type || event,
 196                         bubbling = arguments[3];
 197
 198                 if ( !bubbling ) {
 199                         event = typeof event === "object" ?
 200                                 // jQuery.Event object
 201                                 event[expando] ? event :
 202                                 // Object literal
 203                                 jQuery.extend( jQuery.Event(type), event ) :
 204                                 // Just the event type (string)
 205                                 jQuery.Event(type);
 206
 207                         if ( type.indexOf("!") >= 0 ) {
 208                                 event.type = type = type.slice(0, -1);
 209                                 event.exclusive = true;
 210                         }
 211
 212                         // Handle a global trigger
 213                         if ( !elem ) {
 214                                 // Don't bubble custom events when global (to avoid too much overhead)
 215                                 event.stopPropagation();
 216                                 // Only trigger if we've ever bound an event for it
 217                                 if ( this.global[ type ] ) {
 218                                         jQuery.each( jQuery.cache, function() {
 219                                                 if ( this.events && this.events[type] ) {
 220                                                         jQuery.event.trigger( event, data, this.handle.elem );
 221                                                 }
 222                                         });
 223                                 }
 224                         }
 225
 226                         // Handle triggering a single element
 227
 228                         // don't do events on text and comment nodes
 229                         if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
 230                                 return undefined;
 231                         }
 232
 233                         // Clean up in case it is reused
 234                         event.result = undefined;
 235                         event.target = elem;
 236
 237                         // Clone the incoming data, if any
 238                         data = jQuery.makeArray( data );
 239                         data.unshift( event );
 240                 }
 241
 242                 event.currentTarget = elem;
 243
 244                 // Trigger the event, it is assumed that "handle" is a function
 245                 var handle = jQuery.data( elem, "handle" );
 246                 if ( handle ) {
 247                         handle.apply( elem, data );
 248                 }
 249
 250                 var nativeFn, nativeHandler;
 251                 try {
 252                         nativeFn = elem[ type ];
 253                         nativeHandler = elem[ "on" + type ];
 254                 // prevent IE from throwing an error for some elements with some event types, see #3533
 255                 } catch (e) {}
 256                 // Handle triggering native .onfoo handlers (and on links since we don't call .click() for links)
 257                 if ( (!nativeFn || (jQuery.nodeName(elem, 'a') && type === "click")) && nativeHandler && nativeHandler.apply( elem, data ) === false ) {
 258                         event.result = false;
 259                 }
 260
 261                 // Trigger the native events (except for clicks on links)
 262                 if ( !bubbling && nativeFn && !event.isDefaultPrevented() && !(jQuery.nodeName(elem, 'a') && type === "click") ) {
 263                         this.triggered = true;
 264                         try {
 265                                 nativeFn();
 266                         // prevent IE from throwing an error for some hidden elements
 267                         } catch (e) {}
 268                 }
 269
 270                 this.triggered = false;
 271
 272                 if ( !event.isPropagationStopped() ) {
 273                         var parent = elem.parentNode || elem.ownerDocument;
 274                         if ( parent ) {
 275                                 jQuery.event.trigger( event, data, parent, true );
 276                         }
 277                 }
 278         },
 279
 280         handle: function( event ) {
 281                 // returned undefined or false
 282                 var all, handlers;
 283
 284                 event = arguments[0] = jQuery.event.fix( event || window.event );
 285                 event.currentTarget = this;
 286
 287                 // Namespaced event handlers
 288                 var namespaces = event.type.split(".");
 289                 event.type = namespaces.shift();
 290
 291                 // Cache this now, all = true means, any handler
 292                 all = !namespaces.length && !event.exclusive;
 293
 294                 var namespace = new RegExp("(^|\\.)" + namespaces.slice().sort().join("\\.(?:.*\\.)?") + "(\\.|$)");
 295
 296                 handlers = ( jQuery.data(this, "events") || {} )[ event.type ];
 297
 298                 for ( var j in handlers ) {
 299                         var handler = handlers[ j ];
 300
 301                         // Filter the functions by class
 302                         if ( all || namespace.test(handler.type) ) {
 303                                 // Pass in a reference to the handler function itself
 304                                 // So that we can later remove it
 305                                 event.handler = handler;
 306                                 event.data = handler.data;
 307
 308                                 var ret = handler.apply( this, arguments );
 309
 310                                 if ( ret !== undefined ) {
 311                                         event.result = ret;
 312                                         if ( ret === false ) {
 313                                                 event.preventDefault();
 314                                                 event.stopPropagation();
 315                                         }
 316                                 }
 317
 318                                 if ( event.isImmediatePropagationStopped() ) {
 319                                         break;
 320                                 }
 321
 322                         }
 323                 }
 324         },
 325
 326         props: "altKey attrChange attrName bubbles button cancelable charCode clientX clientY ctrlKey currentTarget data detail eventPhase fromElement handler keyCode layerX layerY metaKey newValue offsetX offsetY originalTarget pageX pageY prevValue relatedNode relatedTarget screenX screenY shiftKey srcElement target toElement view wheelDelta which".split(" "),
 327
 328         fix: function( event ) {
 329                 if ( event[ expando ] ) {
 330                         return event;
 331                 }
 332
 333                 // store a copy of the original event object
 334                 // and "clone" to set read-only properties
 335                 var originalEvent = event;
 336                 event = jQuery.Event( originalEvent );
 337
 338                 for ( var i = this.props.length, prop; i; ) {
 339                         prop = this.props[ --i ];
 340                         event[ prop ] = originalEvent[ prop ];
 341                 }
 342
 343                 // Fix target property, if necessary
 344                 if ( !event.target ) {
 345                         event.target = event.srcElement || document; // Fixes #1925 where srcElement might not be defined either
 346                 }
 347
 348                 // check if target is a textnode (safari)
 349                 if ( event.target.nodeType === 3 ) {
 350                         event.target = event.target.parentNode;
 351                 }
 352
 353                 // Add relatedTarget, if necessary
 354                 if ( !event.relatedTarget && event.fromElement ) {
 355                         event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;
 356                 }
 357
 358                 // Calculate pageX/Y if missing and clientX/Y available
 359                 if ( event.pageX == null && event.clientX != null ) {
 360                         var doc = document.documentElement, body = document.body;
 361                         event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
 362                         event.pageY = event.clientY + (doc && doc.scrollTop  || body && body.scrollTop  || 0) - (doc && doc.clientTop  || body && body.clientTop  || 0);
 363                 }
 364
 365                 // Add which for key events
 366                 if ( !event.which && ((event.charCode || event.charCode === 0) ? event.charCode : event.keyCode) ) {
 367                         event.which = event.charCode || event.keyCode;
 368                 }
 369
 370                 // Add metaKey to non-Mac browsers (use ctrl for PC's and Meta for Macs)
 371                 if ( !event.metaKey && event.ctrlKey ) {
 372                         event.metaKey = event.ctrlKey;
 373                 }
 374
 375                 // Add which for click: 1 == left; 2 == middle; 3 == right
 376                 // Note: button is not normalized, so don't use it
 377                 if ( !event.which && event.button !== undefined ) {
 378                         event.which = (event.button & 1 ? 1 : ( event.button & 2 ? 3 : ( event.button & 4 ? 2 : 0 ) ));
 379                 }
 380
 381                 return event;
 382         },
 383
 384         proxy: function( fn, proxy, thisObject ) {
 385                 if ( proxy !== undefined && !jQuery.isFunction( proxy ) ) {
 386                         thisObject = proxy;
 387                         proxy = undefined;
 388                 }
 389                 // FIXME: Should proxy be redefined to be applied with thisObject if defined?
 390                 proxy = proxy || function() { return fn.apply( thisObject !== undefined ? thisObject : this, arguments ); };
 391                 // Set the guid of unique handler to the same of original handler, so it can be removed
 392                 proxy.guid = fn.guid = fn.guid || proxy.guid || this.guid++;
 393                 // So proxy can be declared as an argument
 394                 return proxy;
 395         },
 396
 397         special: {
 398                 ready: {
 399                         // Make sure the ready event is setup
 400                         setup: bindReady,
 401                         teardown: function() {}
 402                 },
 403
 404                 live: {
 405                         add: function( proxy, data, namespaces ) {
 406                                 jQuery.extend( proxy, data || {} );
 407                                 proxy.guid += data.selector + data.live;
 408                                 jQuery.event.add( this, data.live, liveHandler, data );
 409                         },
 410
 411                         remove: function( namespaces ) {
 412                                 if ( namespaces.length ) {
 413                                         var remove = 0, name = new RegExp("(^|\\.)" + namespaces[0] + "(\\.|$)");
 414
 415                                         jQuery.each( (jQuery.data(this, "events").live || {}), function() {
 416                                                 if ( name.test(this.type) ) {
 417                                                         remove++;
 418                                                 }
 419                                         });
 420
 421                                         if ( remove < 1 ) {
 422                                                 jQuery.event.remove( this, namespaces[0], liveHandler );
 423                                         }
 424                                 }
 425                         }
 426                 }
 427         }
 428 };
 429
 430 jQuery.Event = function( src ){
 431         // Allow instantiation without the 'new' keyword
 432         if ( !this.preventDefault ) {
 433                 return new jQuery.Event( src );
 434         }
 435
 436         // Event object
 437         if ( src && src.type ) {
 438                 this.originalEvent = src;
 439                 this.type = src.type;
 440         // Event type
 441         } else {
 442                 this.type = src;
 443         }
 444
 445         // timeStamp is buggy for some events on Firefox(#3843)
 446         // So we won't rely on the native value
 447         this.timeStamp = now();
 448
 449         // Mark it as fixed
 450         this[ expando ] = true;
 451 };
 452
 453 function returnFalse() {
 454         return false;
 455 }
 456 function returnTrue() {
 457         return true;
 458 }
 459
 460 // jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
 461 // http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
 462 jQuery.Event.prototype = {
 463         preventDefault: function() {
 464                 this.isDefaultPrevented = returnTrue;
 465
 466                 var e = this.originalEvent;
 467                 if ( !e ) {
 468                         return;
 469                 }
 470
 471                 // if preventDefault exists run it on the original event
 472                 if ( e.preventDefault ) {
 473                         e.preventDefault();
 474                 }
 475                 // otherwise set the returnValue property of the original event to false (IE)
 476                 e.returnValue = false;
 477         },
 478         stopPropagation: function() {
 479                 this.isPropagationStopped = returnTrue;
 480
 481                 var e = this.originalEvent;
 482                 if ( !e ) {
 483                         return;
 484                 }
 485                 // if stopPropagation exists run it on the original event
 486                 if ( e.stopPropagation ) {
 487                         e.stopPropagation();
 488                 }
 489                 // otherwise set the cancelBubble property of the original event to true (IE)
 490                 e.cancelBubble = true;
 491         },
 492         stopImmediatePropagation: function(){
 493                 this.isImmediatePropagationStopped = returnTrue;
 494                 this.stopPropagation();
 495         },
 496         isDefaultPrevented: returnFalse,
 497         isPropagationStopped: returnFalse,
 498         isImmediatePropagationStopped: returnFalse
 499 };
 500 // Checks if an event happened on an element within another element
 501 // Used in jQuery.event.special.mouseenter and mouseleave handlers
 502 var withinElement = function( event ) {
 503         // Check if mouse(over|out) are still within the same parent element
 504         var parent = event.relatedTarget;
 505         // Traverse up the tree
 506         while ( parent && parent != this ) {
 507                 // Firefox sometimes assigns relatedTarget a XUL element
 508                 // which we cannot access the parentNode property of
 509                 try { parent = parent.parentNode; }
 510                 // assuming we've left the element since we most likely mousedover a xul element
 511                 catch(e) { break; }
 512         }
 513
 514         if ( parent != this ) {
 515                 // set the correct event type
 516                 event.type = event.data;
 517                 // handle event if we actually just moused on to a non sub-element
 518                 jQuery.event.handle.apply( this, arguments );
 519         }
 520
 521 },
 522
 523 // In case of event delegation, we only need to rename the event.type,
 524 // liveHandler will take care of the rest.
 525 delegate = function( event ) {
 526         event.type = event.data;
 527         jQuery.event.handle.apply( this, arguments );
 528 };
 529
 530 // Create mouseenter and mouseleave events
 531 jQuery.each({
 532         mouseover: "mouseenter",
 533         mouseout: "mouseleave"
 534 }, function( orig, fix ) {
 535         jQuery.event.special[ fix ] = {
 536                 setup: function(data){
 537                         jQuery.event.add( this, orig, data && data.selector ? delegate : withinElement, fix );
 538                 },
 539                 teardown: function(data){
 540                         jQuery.event.remove( this, orig, data && data.selector ? delegate : withinElement );
 541                 }
 542         };
 543 });
 544
 545 (function() {
 546
 547         var event = jQuery.event,
 548                 special = event.special,
 549                 handle  = event.handle;
 550
 551         special.submit = {
 552                 setup: function(data, namespaces) {
 553                         if(data.selector) {
 554                                 event.add(this, 'click.specialSubmit', function(e, eventData) {
 555                                         if(jQuery(e.target).filter(":submit, :image").closest(data.selector).length) {
 556                                                 e.type = "submit";
 557                                                 return handle.call( this, e, eventData );
 558                                         }
 559                                 });
 560
 561                                 event.add(this, 'keypress.specialSubmit', function( e, eventData ) {
 562                                         if(jQuery(e.target).filter(":text, :password").closest(data.selector).length) {
 563                                                 e.type = "submit";
 564                                                 return handle.call( this, e, eventData );
 565                                         }
 566                                 });
 567                         } else {
 568                                 return false;
 569                         }
 570                 },
 571
 572                 remove: function(namespaces) {
 573                         event.remove(this, 'click.specialSubmit');
 574                         event.remove(this, 'keypress.specialSubmit');
 575                 }
 576         };
 577
 578 })();
 579
 580 // Create "bubbling" focus and blur events
 581 jQuery.each({
 582         focus: "focusin",
 583         blur: "focusout"
 584 }, function( orig, fix ){
 585         var event = jQuery.event,
 586                 handle = event.handle;
 587
 588         function ieHandler() {
 589                 arguments[0].type = orig;
 590                 return handle.apply(this, arguments);
 591         }
 592
 593         event.special[orig] = {
 594                 setup:function() {
 595                         if ( this.addEventListener )
 596                                 this.addEventListener( orig, handle, true );
 597                         else
 598                                 event.add( this, fix, ieHandler );
 599                 },
 600                 teardown:function() {
 601                         if ( this.removeEventListener )
 602                                 this.removeEventListener( orig, handle, true );
 603                         else
 604                                 event.remove( this, fix, ieHandler );
 605                 }
 606         };
 607 });
 608
 609 jQuery.fn.extend({
 610         // TODO: make bind(), unbind() and one() DRY!
 611         bind: function( type, data, fn, thisObject ) {
 612                 // Handle object literals
 613                 if ( typeof type === "object" ) {
 614                         for ( var key in type ) {
 615                                 this.bind(key, data, type[key], fn);
 616                         }
 617                         return this;
 618                 }
 619
 620                 if ( jQuery.isFunction( data ) ) {
 621                         thisObject = fn;
 622                         fn = data;
 623                         data = undefined;
 624                 }
 625                 fn = thisObject === undefined ? fn : jQuery.event.proxy( fn, thisObject );
 626                 return type === "unload" ? this.one(type, data, fn, thisObject) : this.each(function() {
 627                         jQuery.event.add( this, type, fn, data );
 628                 });
 629         },
 630
 631         one: function( type, data, fn, thisObject ) {
 632                 // Handle object literals
 633                 if ( typeof type === "object" ) {
 634                         for ( var key in type ) {
 635                                 this.one(key, data, type[key], fn);
 636                         }
 637                         return this;
 638                 }
 639
 640                 if ( jQuery.isFunction( data ) ) {
 641                         thisObject = fn;
 642                         fn = data;
 643                         data = undefined;
 644                 }
 645                 fn = thisObject === undefined ? fn : jQuery.event.proxy( fn, thisObject );
 646                 var one = jQuery.event.proxy( fn, function( event ) {
 647                         jQuery( this ).unbind( event, one );
 648                         return fn.apply( this, arguments );
 649                 });
 650                 return this.each(function() {
 651                         jQuery.event.add( this, type, one, data );
 652                 });
 653         },
 654
 655         unbind: function( type, fn ) {
 656                 // Handle object literals
 657                 if ( typeof type === "object" && !type.preventDefault ) {
 658                         for ( var key in type ) {
 659                                 this.unbind(key, type[key]);
 660                         }
 661                         return this;
 662                 }
 663
 664                 return this.each(function() {
 665                         jQuery.event.remove( this, type, fn );
 666                 });
 667         },
 668
 669         trigger: function( type, data ) {
 670                 return this.each(function() {
 671                         jQuery.event.trigger( type, data, this );
 672                 });
 673         },
 674
 675         triggerHandler: function( type, data ) {
 676                 if ( this[0] ) {
 677                         var event = jQuery.Event( type );
 678                         event.preventDefault();
 679                         event.stopPropagation();
 680                         jQuery.event.trigger( event, data, this[0] );
 681                         return event.result;
 682                 }
 683         },
 684
 685         toggle: function( fn ) {
 686                 // Save reference to arguments for access in closure
 687                 var args = arguments, i = 1;
 688
 689                 // link all the functions, so any of them can unbind this click handler
 690                 while( i < args.length ) {
 691                         jQuery.event.proxy( fn, args[ i++ ] );
 692                 }
 693
 694                 return this.click( jQuery.event.proxy( fn, function( event ) {
 695                         // Figure out which function to execute
 696                         var lastToggle = ( jQuery.data( this, 'lastToggle' + fn.guid ) || 0 ) % i;
 697                         jQuery.data( this, 'lastToggle' + fn.guid, lastToggle + 1 );
 698
 699                         // Make sure that clicks stop
 700                         event.preventDefault();
 701
 702                         // and execute the function
 703                         return args[ lastToggle ].apply( this, arguments ) || false;
 704                 }));
 705         },
 706
 707         hover: function( fnOver, fnOut ) {
 708                 return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
 709         },
 710
 711         ready: function( fn ) {
 712                 // Attach the listeners
 713                 bindReady();
 714
 715                 // If the DOM is already ready
 716                 if ( jQuery.isReady ) {
 717                         // Execute the function immediately
 718                         fn.call( document, jQuery );
 719
 720                 // Otherwise, remember the function for later
 721                 } else {
 722                         // Add the function to the wait list
 723                         jQuery.readyList.push( fn );
 724                 }
 725
 726                 return this;
 727         },
 728
 729         live: function( type, data, fn, thisObject ) {
 730                 if ( jQuery.isFunction( data ) ) {
 731                         if ( fn !== undefined ) {
 732                                 thisObject = fn;
 733                         }
 734                         fn = data;
 735                         data = undefined;
 736                 }
 737                 jQuery( this.context ).bind( liveConvert( type, this.selector ), {
 738                         data: data, selector: this.selector, live: type
 739                 }, fn, thisObject );
 740                 return this;
 741         },
 742
 743         die: function( type, fn ) {
 744                 jQuery( this.context ).unbind( liveConvert( type, this.selector ), fn ? { guid: fn.guid + this.selector + type } : null );
 745                 return this;
 746         }
 747 });
 748
 749 function liveHandler( event ) {
 750         var stop = true, elems = [], args = arguments;
 751
 752         jQuery.each( jQuery.data( this, "events" ).live || [], function( i, fn ) {
 753                 if ( fn.live === event.type ) {
 754                         var elem = jQuery( event.target ).closest( fn.selector, event.currentTarget )[0],
 755                                 related;
 756                         if ( elem ) {
 757                                 // Those two events require additional checking
 758                                 if ( fn.live === "mouseenter" || fn.live === "mouseleave" ) {
 759                                         related = jQuery( event.relatedTarget ).closest( fn.selector )[0];
 760                                 }
 761
 762                                 if ( !related || related !== elem ) {
 763                                         elems.push({ elem: elem, fn: fn });
 764                                 }
 765                         }
 766                 }
 767         });
 768
 769         elems.sort(function( a, b ) {
 770                 return a.closer - b.closer;
 771         });
 772
 773         jQuery.each(elems, function() {
 774                 event.currentTarget = this.elem;
 775                 event.data = this.fn.data;
 776                 if ( this.fn.apply( this.elem, args ) === false ) {
 777                         return (stop = false);
 778                 }
 779         });
 780
 781         return stop;
 782 }
 783
 784 function liveConvert( type, selector ) {
 785         return ["live", type, selector.replace(/\./g, "`").replace(/ /g, "|")].join(".");
 786 }
 787
 788 jQuery.extend({
 789         isReady: false,
 790         readyList: [],
 791         // Handle when the DOM is ready
 792         ready: function() {
 793                 // Make sure that the DOM is not already loaded
 794                 if ( !jQuery.isReady ) {
 795                         if ( !document.body ) {
 796                                 return setTimeout( jQuery.ready, 13 );
 797                         }
 798
 799                         // Remember that the DOM is ready
 800                         jQuery.isReady = true;
 801
 802                         // If there are functions bound, to execute
 803                         if ( jQuery.readyList ) {
 804                                 // Execute all of them
 805                                 var fn, i = 0;
 806                                 while ( (fn = jQuery.readyList[ i++ ]) ) {
 807                                         fn.call( document, jQuery );
 808                                 }
 809
 810                                 // Reset the list of functions
 811                                 jQuery.readyList = null;
 812                         }
 813
 814                         // Trigger any bound ready events
 815                         jQuery( document ).triggerHandler( "ready" );
 816                 }
 817         }
 818 });
 819
 820 var readyBound = false;
 821
 822 function bindReady() {
 823         if ( readyBound ) return;
 824         readyBound = true;
 825
 826         // Catch cases where $(document).ready() is called after the
 827         // browser event has already occurred.
 828         if ( document.readyState === "complete" ) {
 829                 return jQuery.ready();
 830         }
 831
 832         // Mozilla, Opera and webkit nightlies currently support this event
 833         if ( document.addEventListener ) {
 834                 // Use the handy event callback
 835                 document.addEventListener( "DOMContentLoaded", function() {
 836                         document.removeEventListener( "DOMContentLoaded", arguments.callee, false );
 837                         jQuery.ready();
 838                 }, false );
 839
 840         // If IE event model is used
 841         } else if ( document.attachEvent ) {
 842                 // ensure firing before onload,
 843                 // maybe late but safe also for iframes
 844                 document.attachEvent("onreadystatechange", function() {
 845                         // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
 846                         if ( document.readyState === "complete" ) {
 847                                 document.detachEvent( "onreadystatechange", arguments.callee );
 848                                 jQuery.ready();
 849                         }
 850                 });
 851
 852                 // If IE and not a frame
 853                 // continually check to see if the document is ready
 854                 var toplevel = false;
 855
 856                 try {
 857                         toplevel = window.frameElement == null;
 858                 } catch(e){}
 859
 860                 if ( document.documentElement.doScroll && toplevel ) (function() {
 861                         if ( jQuery.isReady ) {
 862                                 return;
 863                         }
 864
 865                         try {
 866                                 // If IE is used, use the trick by Diego Perini
 867                                 // http://javascript.nwbox.com/IEContentLoaded/
 868                                 document.documentElement.doScroll("left");
 869                         } catch( error ) {
 870                                 setTimeout( arguments.callee, 0 );
 871                                 return;
 872                         }
 873
 874                         // and execute any waiting functions
 875                         jQuery.ready();
 876                 })();
 877         }
 878
 879         // A fallback to window.onload, that will always work
 880         jQuery.event.add( window, "load", jQuery.ready );
 881 }
 882
 883 jQuery.each( ("blur focus load resize scroll unload click dblclick " +
 884         "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
 885         "change select submit keydown keypress keyup error").split(" "), function( i, name ) {
 886
 887         // Handle event binding
 888         jQuery.fn[ name ] = function( fn ) {
 889                 return fn ? this.bind( name, fn ) : this.trigger( name );
 890         };
 891 });
 892
 893 // Prevent memory leaks in IE
 894 // Window isn't included so as not to unbind existing unload events
 895 // More info:
 896 //  - http://isaacschlueter.com/2006/10/msie-memory-leaks/
 897 /*@cc_on
 898 jQuery( window ).bind( 'unload', function() {
 899         for ( var id in jQuery.cache ) {
 900                 // Skip the window
 901                 if ( id != 1 && jQuery.cache[ id ].handle ) {
 902                         jQuery.event.remove( jQuery.cache[ id ].handle.elem );
 903                 }
 904         }
 905 });
 906 @*/