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(0).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(0).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 );
 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                 // if preventDefault exists run it on the original event
 471                 if ( e.preventDefault ) {
 472                         e.preventDefault();
 473                 }
 474                 // otherwise set the returnValue property of the original event to false (IE)
 475                 e.returnValue = false;
 476         },
 477         stopPropagation: function() {
 478                 this.isPropagationStopped = returnTrue;
 479
 480                 var e = this.originalEvent;
 481                 if ( !e ) {
 482                         return;
 483                 }
 484                 // if stopPropagation exists run it on the original event
 485                 if ( e.stopPropagation ) {
 486                         e.stopPropagation();
 487                 }
 488                 // otherwise set the cancelBubble property of the original event to true (IE)
 489                 e.cancelBubble = true;
 490         },
 491         stopImmediatePropagation: function(){
 492                 this.isImmediatePropagationStopped = returnTrue;
 493                 this.stopPropagation();
 494         },
 495         isDefaultPrevented: returnFalse,
 496         isPropagationStopped: returnFalse,
 497         isImmediatePropagationStopped: returnFalse
 498 };
 499 // Checks if an event happened on an element within another element
 500 // Used in jQuery.event.special.mouseenter and mouseleave handlers
 501 var withinElement = function( event ) {
 502         // Check if mouse(over|out) are still within the same parent element
 503         var parent = event.relatedTarget;
 504         // Traverse up the tree
 505         while ( parent && parent != this ) {
 506                 // Firefox sometimes assigns relatedTarget a XUL element
 507                 // which we cannot access the parentNode property of
 508                 try { parent = parent.parentNode; }
 509                 // assuming we've left the element since we most likely mousedover a xul element
 510                 catch(e) { break; }
 511         }
 512
 513         if ( parent != this ) {
 514                 // set the correct event type
 515                 event.type = event.data;
 516                 // handle event if we actually just moused on to a non sub-element
 517                 jQuery.event.handle.apply( this, arguments );
 518         }
 519 };
 520
 521 // Create mouseenter and mouseleave events
 522 jQuery.each({
 523         mouseover: "mouseenter",
 524         mouseout: "mouseleave"
 525 }, function( orig, fix ) {
 526         jQuery.event.special[ fix ] = {
 527                 setup: function(){
 528                         jQuery.event.add( this, orig, withinElement, fix );
 529                 },
 530                 teardown: function(){
 531                         jQuery.event.remove( this, orig, withinElement );
 532                 }
 533         };
 534 });
 535
 536 // Create "bubbling" focus and blur events
 537 jQuery.each({
 538         focus: "focusin",
 539         blur: "focusout"
 540 }, function( orig, fix ){
 541         var event = jQuery.event,
 542                 special = event.special,
 543                 handle = event.handle;
 544
 545         function ieHandler() {
 546                 arguments[0].type = orig;
 547                 return handle.apply(this, arguments);
 548         }
 549
 550         special[orig] = {
 551                 setup:function() {
 552                         if ( this.addEventListener )
 553                                 this.addEventListener( orig, handle, true );
 554                         else
 555                                 jQuery.event.add( this, fix, ieHandler );
 556                 },
 557                 teardown:function() {
 558                         if ( this.removeEventListener )
 559                                 this.removeEventListener( orig, handle, true );
 560                         else
 561                                 jQuery.event.remove( this, fix, ieHandler );
 562                 }
 563         };
 564 });
 565
 566 jQuery.fn.extend({
 567         // TODO: make bind(), unbind() and one() DRY!
 568         bind: function( type, data, fn, thisObject ) {
 569                 // Handle object literals
 570                 if ( typeof type === "object" ) {
 571                         for ( var key in type ) {
 572                                 this.bind(key, data, type[key], fn);
 573                         }
 574                         return this;
 575                 }
 576
 577                 if ( jQuery.isFunction( data ) ) {
 578                         thisObject = fn;
 579                         fn = data;
 580                         data = undefined;
 581                 }
 582                 fn = thisObject === undefined ? fn : jQuery.event.proxy( fn, thisObject );
 583                 return type === "unload" ? this.one(type, data, fn, thisObject) : this.each(function() {
 584                         jQuery.event.add( this, type, fn, data );
 585                 });
 586         },
 587
 588         one: function( type, data, fn, thisObject ) {
 589                 // Handle object literals
 590                 if ( typeof type === "object" ) {
 591                         for ( var key in type ) {
 592                                 this.one(key, data, type[key], fn);
 593                         }
 594                         return this;
 595                 }
 596
 597                 if ( jQuery.isFunction( data ) ) {
 598                         thisObject = fn;
 599                         fn = data;
 600                         data = undefined;
 601                 }
 602                 fn = thisObject === undefined ? fn : jQuery.event.proxy( fn, thisObject );
 603                 var one = jQuery.event.proxy( fn, function( event ) {
 604                         jQuery( this ).unbind( event, one );
 605                         return fn.apply( this, arguments );
 606                 });
 607                 return this.each(function() {
 608                         jQuery.event.add( this, type, one, data );
 609                 });
 610         },
 611
 612         unbind: function( type, fn ) {
 613                 // Handle object literals
 614                 if ( typeof type === "object" && !type.preventDefault ) {
 615                         for ( var key in type ) {
 616                                 this.unbind(key, type[key]);
 617                         }
 618                         return this;
 619                 }
 620
 621                 return this.each(function() {
 622                         jQuery.event.remove( this, type, fn );
 623                 });
 624         },
 625
 626         trigger: function( type, data ) {
 627                 return this.each(function() {
 628                         jQuery.event.trigger( type, data, this );
 629                 });
 630         },
 631
 632         triggerHandler: function( type, data ) {
 633                 if ( this[0] ) {
 634                         var event = jQuery.Event( type );
 635                         event.preventDefault();
 636                         event.stopPropagation();
 637                         jQuery.event.trigger( event, data, this[0] );
 638                         return event.result;
 639                 }
 640         },
 641
 642         toggle: function( fn ) {
 643                 // Save reference to arguments for access in closure
 644                 var args = arguments, i = 1;
 645
 646                 // link all the functions, so any of them can unbind this click handler
 647                 while( i < args.length ) {
 648                         jQuery.event.proxy( fn, args[ i++ ] );
 649                 }
 650
 651                 return this.click( jQuery.event.proxy( fn, function( event ) {
 652                         // Figure out which function to execute
 653                         this.lastToggle = ( this.lastToggle || 0 ) % i;
 654
 655                         // Make sure that clicks stop
 656                         event.preventDefault();
 657
 658                         // and execute the function
 659                         return args[ this.lastToggle++ ].apply( this, arguments ) || false;
 660                 }));
 661         },
 662
 663         hover: function( fnOver, fnOut ) {
 664                 return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
 665         },
 666
 667         ready: function( fn ) {
 668                 // Attach the listeners
 669                 bindReady();
 670
 671                 // If the DOM is already ready
 672                 if ( jQuery.isReady ) {
 673                         // Execute the function immediately
 674                         fn.call( document, jQuery );
 675
 676                 // Otherwise, remember the function for later
 677                 } else {
 678                         // Add the function to the wait list
 679                         jQuery.readyList.push( fn );
 680                 }
 681
 682                 return this;
 683         },
 684
 685         live: function( type, data, fn, thisObject ) {
 686                 if ( jQuery.isFunction( data ) ) {
 687                         if ( fn !== undefined ) {
 688                                 thisObject = fn;
 689                         }
 690                         fn = data;
 691                         data = undefined;
 692                 }
 693                 jQuery( this.context ).bind( liveConvert( type, this.selector ), {
 694                         data: data, selector: this.selector, live: type
 695                 }, fn, thisObject );
 696                 return this;
 697         },
 698
 699         die: function( type, fn ) {
 700                 jQuery( this.context ).unbind( liveConvert( type, this.selector ), fn ? { guid: fn.guid + this.selector + type } : null );
 701                 return this;
 702         }
 703 });
 704
 705 function liveHandler( event ) {
 706         var stop = true, elems = [], args = arguments;
 707
 708         jQuery.each( jQuery.data( this, "events" ).live || [], function( i, fn ) {
 709                 if ( fn.live === event.type ) {
 710                         var elem = jQuery( event.target ).closest( fn.selector )[0];
 711                         if ( elem ) {
 712                                 elems.push({ elem: elem, fn: fn });
 713                         }
 714                 }
 715         });
 716
 717         elems.sort(function( a, b ) {
 718                 return jQuery.data( a.elem, "closest" ) - jQuery.data( b.elem, "closest" );
 719         });
 720
 721         jQuery.each(elems, function() {
 722                 event.currentTarget = this.elem;
 723                 event.data = this.fn.data;
 724                 if ( this.fn.apply( this.elem, args ) === false ) {
 725                         return (stop = false);
 726                 }
 727         });
 728
 729         return stop;
 730 }
 731
 732 function liveConvert( type, selector ) {
 733         return ["live", type, selector.replace(/\./g, "`").replace(/ /g, "|")].join(".");
 734 }
 735
 736 jQuery.extend({
 737         isReady: false,
 738         readyList: [],
 739         // Handle when the DOM is ready
 740         ready: function() {
 741                 // Make sure that the DOM is not already loaded
 742                 if ( !jQuery.isReady ) {
 743                         // Remember that the DOM is ready
 744                         jQuery.isReady = true;
 745
 746                         // If there are functions bound, to execute
 747                         if ( jQuery.readyList ) {
 748                                 // Execute all of them
 749                                 var fn, i = 0;
 750                                 while ( (fn = jQuery.readyList[ i++ ]) ) {
 751                                         fn.call( document, jQuery );
 752                                 }
 753
 754                                 // Reset the list of functions
 755                                 jQuery.readyList = null;
 756                         }
 757
 758                         // Trigger any bound ready events
 759                         jQuery( document ).triggerHandler( "ready" );
 760                 }
 761         }
 762 });
 763
 764 var readyBound = false;
 765
 766 function bindReady() {
 767         if ( readyBound ) return;
 768         readyBound = true;
 769
 770         // Catch cases where $(document).ready() is called after the
 771         // browser event has already occurred.
 772         if ( document.readyState === "complete" ) {
 773                 return jQuery.ready();
 774         }
 775
 776         // Mozilla, Opera and webkit nightlies currently support this event
 777         if ( document.addEventListener ) {
 778                 // Use the handy event callback
 779                 document.addEventListener( "DOMContentLoaded", function() {
 780                         document.removeEventListener( "DOMContentLoaded", arguments.callee, false );
 781                         jQuery.ready();
 782                 }, false );
 783
 784         // If IE event model is used
 785         } else if ( document.attachEvent ) {
 786                 // ensure firing before onload,
 787                 // maybe late but safe also for iframes
 788                 document.attachEvent("onreadystatechange", function() {
 789                         if ( document.readyState === "complete" ) {
 790                                 document.detachEvent( "onreadystatechange", arguments.callee );
 791                                 jQuery.ready();
 792                         }
 793                 });
 794
 795                 // If IE and not an iframe
 796                 // continually check to see if the document is ready
 797                 if ( document.documentElement.doScroll && window === window.top ) (function() {
 798                         if ( jQuery.isReady ) {
 799                                 return;
 800                         }
 801
 802                         try {
 803                                 // If IE is used, use the trick by Diego Perini
 804                                 // http://javascript.nwbox.com/IEContentLoaded/
 805                                 document.documentElement.doScroll("left");
 806                         } catch( error ) {
 807                                 setTimeout( arguments.callee, 0 );
 808                                 return;
 809                         }
 810
 811                         // and execute any waiting functions
 812                         jQuery.ready();
 813                 })();
 814         }
 815
 816         // A fallback to window.onload, that will always work
 817         jQuery.event.add( window, "load", jQuery.ready );
 818 }
 819
 820 jQuery.each( ("blur,focus,load,resize,scroll,unload,click,dblclick," +
 821         "mousedown,mouseup,mousemove,mouseover,mouseout,mouseenter,mouseleave," +
 822         "change,select,submit,keydown,keypress,keyup,error").split(","), function( i, name ) {
 823
 824         // Handle event binding
 825         jQuery.fn[ name ] = function( fn ) {
 826                 return fn ? this.bind( name, fn ) : this.trigger( name );
 827         };
 828 });
 829
 830 // Prevent memory leaks in IE
 831 // Window isn't included so as not to unbind existing unload events
 832 // More info:
 833 //  - http://isaacschlueter.com/2006/10/msie-memory-leaks/
 834 /*@cc_on
 835 jQuery( window ).bind( 'unload', function() {
 836         for ( var id in jQuery.cache ) {
 837                 // Skip the window
 838                 if ( id != 1 && jQuery.cache[ id ].handle ) {
 839                         jQuery.event.remove( jQuery.cache[ id ].handle.elem );
 840                 }
 841         }
 842 });
 843 @*/