src/event.js

   1 (function( jQuery ) {
   2
   3 var rnamespaces = /\.(.*)$/,
   4         rformElems = /^(?:textarea|input|select)$/i,
   5         rperiod = /\./g,
   6         rspace = / /g,
   7         rescape = /[^\w\s.|`]/g,
   8         fcleanup = function( nm ) {
   9                 return nm.replace(rescape, "\\$&");
  10         },
  11         focusCounts = { focusin: 0, focusout: 0 };
  12
  13 /*
  14  * A number of helper functions used for managing events.
  15  * Many of the ideas behind this code originated from
  16  * Dean Edwards' addEvent library.
  17  */
  18 jQuery.event = {
  19
  20         // Bind an event to an element
  21         // Original by Dean Edwards
  22         add: function( elem, types, handler, data ) {
  23                 if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
  24                         return;
  25                 }
  26
  27                 // For whatever reason, IE has trouble passing the window object
  28                 // around, causing it to be cloned in the process
  29                 if ( jQuery.isWindow( elem ) && ( elem !== window && !elem.frameElement ) ) {
  30                         elem = window;
  31                 }
  32
  33                 if ( handler === false ) {
  34                         handler = returnFalse;
  35                 } else if ( !handler ) {
  36                   // Fixes bug #7229. Fix recommended by jdalton
  37                   return;
  38                 }
  39
  40                 var handleObjIn, handleObj;
  41
  42                 if ( handler.handler ) {
  43                         handleObjIn = handler;
  44                         handler = handleObjIn.handler;
  45                 }
  46
  47                 // Make sure that the function being executed has a unique ID
  48                 if ( !handler.guid ) {
  49                         handler.guid = jQuery.guid++;
  50                 }
  51
  52                 // Init the element's event structure
  53                 var elemData = jQuery.data( elem );
  54
  55                 // If no elemData is found then we must be trying to bind to one of the
  56                 // banned noData elements
  57                 if ( !elemData ) {
  58                         return;
  59                 }
  60
  61                 // Use a key less likely to result in collisions for plain JS objects.
  62                 // Fixes bug #7150.
  63                 var eventKey = elem.nodeType ? "events" : "__events__",
  64                         events = elemData[ eventKey ],
  65                         eventHandle = elemData.handle;
  66
  67                 if ( typeof events === "function" ) {
  68                         // On plain objects events is a fn that holds the the data
  69                         // which prevents this data from being JSON serialized
  70                         // the function does not need to be called, it just contains the data
  71                         eventHandle = events.handle;
  72                         events = events.events;
  73
  74                 } else if ( !events ) {
  75                         if ( !elem.nodeType ) {
  76                                 // On plain objects, create a fn that acts as the holder
  77                                 // of the values to avoid JSON serialization of event data
  78                                 elemData[ eventKey ] = elemData = function(){};
  79                         }
  80
  81                         elemData.events = events = {};
  82                 }
  83
  84                 if ( !eventHandle ) {
  85                         elemData.handle = eventHandle = function() {
  86                                 // Handle the second event of a trigger and when
  87                                 // an event is called after a page has unloaded
  88                                 return typeof jQuery !== "undefined" && !jQuery.event.triggered ?
  89                                         jQuery.event.handle.apply( eventHandle.elem, arguments ) :
  90                                         undefined;
  91                         };
  92                 }
  93
  94                 // Add elem as a property of the handle function
  95                 // This is to prevent a memory leak with non-native events in IE.
  96                 eventHandle.elem = elem;
  97
  98                 // Handle multiple events separated by a space
  99                 // jQuery(...).bind("mouseover mouseout", fn);
 100                 types = types.split(" ");
 101
 102                 var type, i = 0, namespaces;
 103
 104                 while ( (type = types[ i++ ]) ) {
 105                         handleObj = handleObjIn ?
 106                                 jQuery.extend({}, handleObjIn) :
 107                                 { handler: handler, data: data };
 108
 109                         // Namespaced event handlers
 110                         if ( type.indexOf(".") > -1 ) {
 111                                 namespaces = type.split(".");
 112                                 type = namespaces.shift();
 113                                 handleObj.namespace = namespaces.slice(0).sort().join(".");
 114
 115                         } else {
 116                                 namespaces = [];
 117                                 handleObj.namespace = "";
 118                         }
 119
 120                         handleObj.type = type;
 121                         if ( !handleObj.guid ) {
 122                                 handleObj.guid = handler.guid;
 123                         }
 124
 125                         // Get the current list of functions bound to this event
 126                         var handlers = events[ type ],
 127                                 special = jQuery.event.special[ type ] || {};
 128
 129                         // Init the event handler queue
 130                         if ( !handlers ) {
 131                                 handlers = events[ type ] = [];
 132
 133                                 // Check for a special event handler
 134                                 // Only use addEventListener/attachEvent if the special
 135                                 // events handler returns false
 136                                 if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
 137                                         // Bind the global event handler to the element
 138                                         if ( elem.addEventListener ) {
 139                                                 elem.addEventListener( type, eventHandle, false );
 140
 141                                         } else if ( elem.attachEvent ) {
 142                                                 elem.attachEvent( "on" + type, eventHandle );
 143                                         }
 144                                 }
 145                         }
 146
 147                         if ( special.add ) {
 148                                 special.add.call( elem, handleObj );
 149
 150                                 if ( !handleObj.handler.guid ) {
 151                                         handleObj.handler.guid = handler.guid;
 152                                 }
 153                         }
 154
 155                         // Add the function to the element's handler list
 156                         handlers.push( handleObj );
 157
 158                         // Keep track of which events have been used, for global triggering
 159                         jQuery.event.global[ type ] = true;
 160                 }
 161
 162                 // Nullify elem to prevent memory leaks in IE
 163                 elem = null;
 164         },
 165
 166         global: {},
 167
 168         // Detach an event or set of events from an element
 169         remove: function( elem, types, handler, pos ) {
 170                 // don't do events on text and comment nodes
 171                 if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
 172                         return;
 173                 }
 174
 175                 if ( handler === false ) {
 176                         handler = returnFalse;
 177                 }
 178
 179                 var ret, type, fn, j, i = 0, all, namespaces, namespace, special, eventType, handleObj, origType,
 180                         eventKey = elem.nodeType ? "events" : "__events__",
 181                         elemData = jQuery.data( elem ),
 182                         events = elemData && elemData[ eventKey ];
 183
 184                 if ( !elemData || !events ) {
 185                         return;
 186                 }
 187
 188                 if ( typeof events === "function" ) {
 189                         elemData = events;
 190                         events = events.events;
 191                 }
 192
 193                 // types is actually an event object here
 194                 if ( types && types.type ) {
 195                         handler = types.handler;
 196                         types = types.type;
 197                 }
 198
 199                 // Unbind all events for the element
 200                 if ( !types || typeof types === "string" && types.charAt(0) === "." ) {
 201                         types = types || "";
 202
 203                         for ( type in events ) {
 204                                 jQuery.event.remove( elem, type + types );
 205                         }
 206
 207                         return;
 208                 }
 209
 210                 // Handle multiple events separated by a space
 211                 // jQuery(...).unbind("mouseover mouseout", fn);
 212                 types = types.split(" ");
 213
 214                 while ( (type = types[ i++ ]) ) {
 215                         origType = type;
 216                         handleObj = null;
 217                         all = type.indexOf(".") < 0;
 218                         namespaces = [];
 219
 220                         if ( !all ) {
 221                                 // Namespaced event handlers
 222                                 namespaces = type.split(".");
 223                                 type = namespaces.shift();
 224
 225                                 namespace = new RegExp("(^|\\.)" +
 226                                         jQuery.map( namespaces.slice(0).sort(), fcleanup ).join("\\.(?:.*\\.)?") + "(\\.|$)");
 227                         }
 228
 229                         eventType = events[ type ];
 230
 231                         if ( !eventType ) {
 232                                 continue;
 233                         }
 234
 235                         if ( !handler ) {
 236                                 for ( j = 0; j < eventType.length; j++ ) {
 237                                         handleObj = eventType[ j ];
 238
 239                                         if ( all || namespace.test( handleObj.namespace ) ) {
 240                                                 jQuery.event.remove( elem, origType, handleObj.handler, j );
 241                                                 eventType.splice( j--, 1 );
 242                                         }
 243                                 }
 244
 245                                 continue;
 246                         }
 247
 248                         special = jQuery.event.special[ type ] || {};
 249
 250                         for ( j = pos || 0; j < eventType.length; j++ ) {
 251                                 handleObj = eventType[ j ];
 252
 253                                 if ( handler.guid === handleObj.guid ) {
 254                                         // remove the given handler for the given type
 255                                         if ( all || namespace.test( handleObj.namespace ) ) {
 256                                                 if ( pos == null ) {
 257                                                         eventType.splice( j--, 1 );
 258                                                 }
 259
 260                                                 if ( special.remove ) {
 261                                                         special.remove.call( elem, handleObj );
 262                                                 }
 263                                         }
 264
 265                                         if ( pos != null ) {
 266                                                 break;
 267                                         }
 268                                 }
 269                         }
 270
 271                         // remove generic event handler if no more handlers exist
 272                         if ( eventType.length === 0 || pos != null && eventType.length === 1 ) {
 273                                 if ( !special.teardown || special.teardown.call( elem, namespaces ) === false ) {
 274                                         jQuery.removeEvent( elem, type, elemData.handle );
 275                                 }
 276
 277                                 ret = null;
 278                                 delete events[ type ];
 279                         }
 280                 }
 281
 282                 // Remove the expando if it's no longer used
 283                 if ( jQuery.isEmptyObject( events ) ) {
 284                         var handle = elemData.handle;
 285                         if ( handle ) {
 286                                 handle.elem = null;
 287                         }
 288
 289                         delete elemData.events;
 290                         delete elemData.handle;
 291
 292                         if ( typeof elemData === "function" ) {
 293                                 jQuery.removeData( elem, eventKey );
 294
 295                         } else if ( jQuery.isEmptyObject( elemData ) ) {
 296                                 jQuery.removeData( elem );
 297                         }
 298                 }
 299         },
 300
 301         // bubbling is internal
 302         trigger: function( event, data, elem /*, bubbling */ ) {
 303                 // Event object or event type
 304                 var type = event.type || event,
 305                         bubbling = arguments[3];
 306
 307                 if ( !bubbling ) {
 308                         event = typeof event === "object" ?
 309                                 // jQuery.Event object
 310                                 event[ jQuery.expando ] ? event :
 311                                 // Object literal
 312                                 jQuery.extend( jQuery.Event(type), event ) :
 313                                 // Just the event type (string)
 314                                 jQuery.Event(type);
 315
 316                         if ( type.indexOf("!") >= 0 ) {
 317                                 event.type = type = type.slice(0, -1);
 318                                 event.exclusive = true;
 319                         }
 320
 321                         // Handle a global trigger
 322                         if ( !elem ) {
 323                                 // Don't bubble custom events when global (to avoid too much overhead)
 324                                 event.stopPropagation();
 325
 326                                 // Only trigger if we've ever bound an event for it
 327                                 if ( jQuery.event.global[ type ] ) {
 328                                         jQuery.each( jQuery.cache, function() {
 329                                                 if ( this.events && this.events[type] ) {
 330                                                         jQuery.event.trigger( event, data, this.handle.elem );
 331                                                 }
 332                                         });
 333                                 }
 334                         }
 335
 336                         // Handle triggering a single element
 337
 338                         // don't do events on text and comment nodes
 339                         if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
 340                                 return undefined;
 341                         }
 342
 343                         // Clean up in case it is reused
 344                         event.result = undefined;
 345                         event.target = elem;
 346
 347                         // Clone the incoming data, if any
 348                         data = jQuery.makeArray( data );
 349                         data.unshift( event );
 350                 }
 351
 352                 event.currentTarget = elem;
 353
 354                 // Trigger the event, it is assumed that "handle" is a function
 355                 var handle = elem.nodeType ?
 356                         jQuery.data( elem, "handle" ) :
 357                         (jQuery.data( elem, "__events__" ) || {}).handle;
 358
 359                 if ( handle ) {
 360                         handle.apply( elem, data );
 361                 }
 362
 363                 var parent = elem.parentNode || elem.ownerDocument;
 364
 365                 // Trigger an inline bound script
 366                 try {
 367                         if ( !(elem && elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()]) ) {
 368                                 if ( elem[ "on" + type ] && elem[ "on" + type ].apply( elem, data ) === false ) {
 369                                         event.result = false;
 370                                         event.preventDefault();
 371                                 }
 372                         }
 373
 374                 // prevent IE from throwing an error for some elements with some event types, see #3533
 375                 } catch (inlineError) {}
 376
 377                 if ( !event.isPropagationStopped() && parent ) {
 378                         jQuery.event.trigger( event, data, parent, true );
 379
 380                 } else if ( !event.isDefaultPrevented() ) {
 381                         var target = event.target, old, targetType = type.replace(rnamespaces, ""),
 382                                 isClick = jQuery.nodeName(target, "a") && targetType === "click",
 383                                 special = jQuery.event.special[ targetType ] || {};
 384
 385                         if ( (!special._default || special._default.call( elem, event ) === false) &&
 386                                 !isClick && !(target && target.nodeName && jQuery.noData[target.nodeName.toLowerCase()]) ) {
 387
 388                                 try {
 389                                         if ( target[ targetType ] ) {
 390                                                 // Make sure that we don't accidentally re-trigger the onFOO events
 391                                                 old = target[ "on" + targetType ];
 392
 393                                                 if ( old ) {
 394                                                         target[ "on" + targetType ] = null;
 395                                                 }
 396
 397                                                 jQuery.event.triggered = true;
 398                                                 target[ targetType ]();
 399                                         }
 400
 401                                 // prevent IE from throwing an error for some elements with some event types, see #3533
 402                                 } catch (triggerError) {}
 403
 404                                 if ( old ) {
 405                                         target[ "on" + targetType ] = old;
 406                                 }
 407
 408                                 jQuery.event.triggered = false;
 409                         }
 410                 }
 411         },
 412
 413         handle: function( event ) {
 414                 var all, handlers, namespaces, namespace_sort = [], namespace_re, events, args = jQuery.makeArray( arguments );
 415
 416                 event = args[0] = jQuery.event.fix( event || window.event );
 417                 event.currentTarget = this;
 418
 419                 // Namespaced event handlers
 420                 all = event.type.indexOf(".") < 0 && !event.exclusive;
 421
 422                 if ( !all ) {
 423                         namespaces = event.type.split(".");
 424                         event.type = namespaces.shift();
 425                         namespace_sort = namespaces.slice(0).sort();
 426                         namespace_re = new RegExp("(^|\\.)" + namespace_sort.join("\\.(?:.*\\.)?") + "(\\.|$)");
 427                 }
 428
 429                 event.namespace = event.namespace || namespace_sort.join(".");
 430
 431                 events = jQuery.data(this, this.nodeType ? "events" : "__events__");
 432
 433                 if ( typeof events === "function" ) {
 434                         events = events.events;
 435                 }
 436
 437                 handlers = (events || {})[ event.type ];
 438
 439                 if ( events && handlers ) {
 440                         // Clone the handlers to prevent manipulation
 441                         handlers = handlers.slice(0);
 442
 443                         for ( var j = 0, l = handlers.length; j < l; j++ ) {
 444                                 var handleObj = handlers[ j ];
 445
 446                                 // Filter the functions by class
 447                                 if ( all || namespace_re.test( handleObj.namespace ) ) {
 448                                         // Pass in a reference to the handler function itself
 449                                         // So that we can later remove it
 450                                         event.handler = handleObj.handler;
 451                                         event.data = handleObj.data;
 452                                         event.handleObj = handleObj;
 453
 454                                         var ret = handleObj.handler.apply( this, args );
 455
 456                                         if ( ret !== undefined ) {
 457                                                 event.result = ret;
 458                                                 if ( ret === false ) {
 459                                                         event.preventDefault();
 460                                                         event.stopPropagation();
 461                                                 }
 462                                         }
 463
 464                                         if ( event.isImmediatePropagationStopped() ) {
 465                                                 break;
 466                                         }
 467                                 }
 468                         }
 469                 }
 470
 471                 return event.result;
 472         },
 473
 474         props: "altKey attrChange attrName bubbles button cancelable charCode clientX clientY ctrlKey currentTarget data detail eventPhase fromElement handler keyCode layerX layerY metaKey newValue offsetX offsetY pageX pageY prevValue relatedNode relatedTarget screenX screenY shiftKey srcElement target toElement view wheelDelta which".split(" "),
 475
 476         fix: function( event ) {
 477                 if ( event[ jQuery.expando ] ) {
 478                         return event;
 479                 }
 480
 481                 // store a copy of the original event object
 482                 // and "clone" to set read-only properties
 483                 var originalEvent = event;
 484                 event = jQuery.Event( originalEvent );
 485
 486                 for ( var i = this.props.length, prop; i; ) {
 487                         prop = this.props[ --i ];
 488                         event[ prop ] = originalEvent[ prop ];
 489                 }
 490
 491                 // Fix target property, if necessary
 492                 if ( !event.target ) {
 493                         event.target = event.srcElement || document; // Fixes #1925 where srcElement might not be defined either
 494                 }
 495
 496                 // check if target is a textnode (safari)
 497                 if ( event.target.nodeType === 3 ) {
 498                         event.target = event.target.parentNode;
 499                 }
 500
 501                 // Add relatedTarget, if necessary
 502                 if ( !event.relatedTarget && event.fromElement ) {
 503                         event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;
 504                 }
 505
 506                 // Calculate pageX/Y if missing and clientX/Y available
 507                 if ( event.pageX == null && event.clientX != null ) {
 508                         var doc = document.documentElement, body = document.body;
 509                         event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
 510                         event.pageY = event.clientY + (doc && doc.scrollTop  || body && body.scrollTop  || 0) - (doc && doc.clientTop  || body && body.clientTop  || 0);
 511                 }
 512
 513                 // Add which for key events
 514                 if ( event.which == null && (event.charCode != null || event.keyCode != null) ) {
 515                         event.which = event.charCode != null ? event.charCode : event.keyCode;
 516                 }
 517
 518                 // Add metaKey to non-Mac browsers (use ctrl for PC's and Meta for Macs)
 519                 if ( !event.metaKey && event.ctrlKey ) {
 520                         event.metaKey = event.ctrlKey;
 521                 }
 522
 523                 // Add which for click: 1 === left; 2 === middle; 3 === right
 524                 // Note: button is not normalized, so don't use it
 525                 if ( !event.which && event.button !== undefined ) {
 526                         event.which = (event.button & 1 ? 1 : ( event.button & 2 ? 3 : ( event.button & 4 ? 2 : 0 ) ));
 527                 }
 528
 529                 return event;
 530         },
 531
 532         // Deprecated, use jQuery.guid instead
 533         guid: 1E8,
 534
 535         // Deprecated, use jQuery.proxy instead
 536         proxy: jQuery.proxy,
 537
 538         special: {
 539                 ready: {
 540                         // Make sure the ready event is setup
 541                         setup: jQuery.bindReady,
 542                         teardown: jQuery.noop
 543                 },
 544
 545                 live: {
 546                         add: function( handleObj ) {
 547                                 jQuery.event.add( this,
 548                                         liveConvert( handleObj.origType, handleObj.selector ),
 549                                         jQuery.extend({}, handleObj, {handler: liveHandler, guid: handleObj.handler.guid}) );
 550                         },
 551
 552                         remove: function( handleObj ) {
 553                                 jQuery.event.remove( this, liveConvert( handleObj.origType, handleObj.selector ), handleObj );
 554                         }
 555                 },
 556
 557                 beforeunload: {
 558                         setup: function( data, namespaces, eventHandle ) {
 559                                 // We only want to do this special case on windows
 560                                 if ( jQuery.isWindow( this ) ) {
 561                                         this.onbeforeunload = eventHandle;
 562                                 }
 563                         },
 564
 565                         teardown: function( namespaces, eventHandle ) {
 566                                 if ( this.onbeforeunload === eventHandle ) {
 567                                         this.onbeforeunload = null;
 568                                 }
 569                         }
 570                 }
 571         }
 572 };
 573
 574 jQuery.removeEvent = document.removeEventListener ?
 575         function( elem, type, handle ) {
 576                 if ( elem.removeEventListener ) {
 577                         elem.removeEventListener( type, handle, false );
 578                 }
 579         } :
 580         function( elem, type, handle ) {
 581                 if ( elem.detachEvent ) {
 582                         elem.detachEvent( "on" + type, handle );
 583                 }
 584         };
 585
 586 jQuery.Event = function( src ) {
 587         // Allow instantiation without the 'new' keyword
 588         if ( !this.preventDefault ) {
 589                 return new jQuery.Event( src );
 590         }
 591
 592         // Event object
 593         if ( src && src.type ) {
 594                 this.originalEvent = src;
 595                 this.type = src.type;
 596         // Event type
 597         } else {
 598                 this.type = src;
 599         }
 600
 601         // timeStamp is buggy for some events on Firefox(#3843)
 602         // So we won't rely on the native value
 603         this.timeStamp = jQuery.now();
 604
 605         // Mark it as fixed
 606         this[ jQuery.expando ] = true;
 607 };
 608
 609 function returnFalse() {
 610         return false;
 611 }
 612 function returnTrue() {
 613         return true;
 614 }
 615
 616 // jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
 617 // http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
 618 jQuery.Event.prototype = {
 619         preventDefault: function() {
 620                 this.isDefaultPrevented = returnTrue;
 621
 622                 var e = this.originalEvent;
 623                 if ( !e ) {
 624                         return;
 625                 }
 626
 627                 // if preventDefault exists run it on the original event
 628                 if ( e.preventDefault ) {
 629                         e.preventDefault();
 630
 631                 // otherwise set the returnValue property of the original event to false (IE)
 632                 } else {
 633                         e.returnValue = false;
 634                 }
 635         },
 636         stopPropagation: function() {
 637                 this.isPropagationStopped = returnTrue;
 638
 639                 var e = this.originalEvent;
 640                 if ( !e ) {
 641                         return;
 642                 }
 643                 // if stopPropagation exists run it on the original event
 644                 if ( e.stopPropagation ) {
 645                         e.stopPropagation();
 646                 }
 647                 // otherwise set the cancelBubble property of the original event to true (IE)
 648                 e.cancelBubble = true;
 649         },
 650         stopImmediatePropagation: function() {
 651                 this.isImmediatePropagationStopped = returnTrue;
 652                 this.stopPropagation();
 653         },
 654         isDefaultPrevented: returnFalse,
 655         isPropagationStopped: returnFalse,
 656         isImmediatePropagationStopped: returnFalse
 657 };
 658
 659 // Checks if an event happened on an element within another element
 660 // Used in jQuery.event.special.mouseenter and mouseleave handlers
 661 var withinElement = function( event ) {
 662         // Check if mouse(over|out) are still within the same parent element
 663         var parent = event.relatedTarget;
 664
 665         // Firefox sometimes assigns relatedTarget a XUL element
 666         // which we cannot access the parentNode property of
 667         try {
 668                 // Traverse up the tree
 669                 while ( parent && parent !== this ) {
 670                         parent = parent.parentNode;
 671                 }
 672
 673                 if ( parent !== this ) {
 674                         // set the correct event type
 675                         event.type = event.data;
 676
 677                         // handle event if we actually just moused on to a non sub-element
 678                         jQuery.event.handle.apply( this, arguments );
 679                 }
 680
 681         // assuming we've left the element since we most likely mousedover a xul element
 682         } catch(e) { }
 683 },
 684
 685 // In case of event delegation, we only need to rename the event.type,
 686 // liveHandler will take care of the rest.
 687 delegate = function( event ) {
 688         event.type = event.data;
 689         jQuery.event.handle.apply( this, arguments );
 690 };
 691
 692 // Create mouseenter and mouseleave events
 693 jQuery.each({
 694         mouseenter: "mouseover",
 695         mouseleave: "mouseout"
 696 }, function( orig, fix ) {
 697         jQuery.event.special[ orig ] = {
 698                 setup: function( data ) {
 699                         jQuery.event.add( this, fix, data && data.selector ? delegate : withinElement, orig );
 700                 },
 701                 teardown: function( data ) {
 702                         jQuery.event.remove( this, fix, data && data.selector ? delegate : withinElement );
 703                 }
 704         };
 705 });
 706
 707 // submit delegation
 708 if ( !jQuery.support.submitBubbles ) {
 709
 710         jQuery.event.special.submit = {
 711                 setup: function( data, namespaces ) {
 712                         if ( this.nodeName.toLowerCase() !== "form" ) {
 713                                 jQuery.event.add(this, "click.specialSubmit", function( e ) {
 714                                         var elem = e.target, type = elem.type;
 715
 716                                         if ( (type === "submit" || type === "image") && jQuery( elem ).closest("form").length ) {
 717                                                 e.liveFired = undefined;
 718                                                 return trigger( "submit", this, arguments );
 719                                         }
 720                                 });
 721
 722                                 jQuery.event.add(this, "keypress.specialSubmit", function( e ) {
 723                                         var elem = e.target, type = elem.type;
 724
 725                                         if ( (type === "text" || type === "password") && jQuery( elem ).closest("form").length && e.keyCode === 13 ) {
 726                                                 e.liveFired = undefined;
 727                                                 return trigger( "submit", this, arguments );
 728                                         }
 729                                 });
 730
 731                         } else {
 732                                 return false;
 733                         }
 734                 },
 735
 736                 teardown: function( namespaces ) {
 737                         jQuery.event.remove( this, ".specialSubmit" );
 738                 }
 739         };
 740
 741 }
 742
 743 // change delegation, happens here so we have bind.
 744 if ( !jQuery.support.changeBubbles ) {
 745
 746         var changeFilters,
 747
 748         getVal = function( elem ) {
 749                 var type = elem.type, val = elem.value;
 750
 751                 if ( type === "radio" || type === "checkbox" ) {
 752                         val = elem.checked;
 753
 754                 } else if ( type === "select-multiple" ) {
 755                         val = elem.selectedIndex > -1 ?
 756                                 jQuery.map( elem.options, function( elem ) {
 757                                         return elem.selected;
 758                                 }).join("-") :
 759                                 "";
 760
 761                 } else if ( elem.nodeName.toLowerCase() === "select" ) {
 762                         val = elem.selectedIndex;
 763                 }
 764
 765                 return val;
 766         },
 767
 768         testChange = function testChange( e ) {
 769                 var elem = e.target, data, val;
 770
 771                 if ( !rformElems.test( elem.nodeName ) || elem.readOnly ) {
 772                         return;
 773                 }
 774
 775                 data = jQuery.data( elem, "_change_data" );
 776                 val = getVal(elem);
 777
 778                 // the current data will be also retrieved by beforeactivate
 779                 if ( e.type !== "focusout" || elem.type !== "radio" ) {
 780                         jQuery.data( elem, "_change_data", val );
 781                 }
 782
 783                 if ( data === undefined || val === data ) {
 784                         return;
 785                 }
 786
 787                 if ( data != null || val ) {
 788                         e.type = "change";
 789                         e.liveFired = undefined;
 790                         return jQuery.event.trigger( e, arguments[1], elem );
 791                 }
 792         };
 793
 794         jQuery.event.special.change = {
 795                 filters: {
 796                         focusout: testChange,
 797
 798                         beforedeactivate: testChange,
 799
 800                         click: function( e ) {
 801                                 var elem = e.target, type = elem.type;
 802
 803                                 if ( type === "radio" || type === "checkbox" || elem.nodeName.toLowerCase() === "select" ) {
 804                                         return testChange.call( this, e );
 805                                 }
 806                         },
 807
 808                         // Change has to be called before submit
 809                         // Keydown will be called before keypress, which is used in submit-event delegation
 810                         keydown: function( e ) {
 811                                 var elem = e.target, type = elem.type;
 812
 813                                 if ( (e.keyCode === 13 && elem.nodeName.toLowerCase() !== "textarea") ||
 814                                         (e.keyCode === 32 && (type === "checkbox" || type === "radio")) ||
 815                                         type === "select-multiple" ) {
 816                                         return testChange.call( this, e );
 817                                 }
 818                         },
 819
 820                         // Beforeactivate happens also before the previous element is blurred
 821                         // with this event you can't trigger a change event, but you can store
 822                         // information
 823                         beforeactivate: function( e ) {
 824                                 var elem = e.target;
 825                                 jQuery.data( elem, "_change_data", getVal(elem) );
 826                         }
 827                 },
 828
 829                 setup: function( data, namespaces ) {
 830                         if ( this.type === "file" ) {
 831                                 return false;
 832                         }
 833
 834                         for ( var type in changeFilters ) {
 835                                 jQuery.event.add( this, type + ".specialChange", changeFilters[type] );
 836                         }
 837
 838                         return rformElems.test( this.nodeName );
 839                 },
 840
 841                 teardown: function( namespaces ) {
 842                         jQuery.event.remove( this, ".specialChange" );
 843
 844                         return rformElems.test( this.nodeName );
 845                 }
 846         };
 847
 848         changeFilters = jQuery.event.special.change.filters;
 849
 850         // Handle when the input is .focus()'d
 851         changeFilters.focus = changeFilters.beforeactivate;
 852 }
 853
 854 function trigger( type, elem, args ) {
 855         args[0].type = type;
 856         return jQuery.event.handle.apply( elem, args );
 857 }
 858
 859 // Create "bubbling" focus and blur events
 860 if ( document.addEventListener ) {
 861         jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) {
 862                 jQuery.event.special[ fix ] = {
 863                         setup: function() {
 864                                 if ( focusCounts[fix]++ === 0 ) {
 865                                         document.addEventListener( orig, handler, true );
 866                                 }
 867                         },
 868                         teardown: function() {
 869                                 if ( --focusCounts[fix] === 0 ) {
 870                                         document.removeEventListener( orig, handler, true );
 871                                 }
 872                         }
 873                 };
 874
 875                 function handler( e ) {
 876                         e = jQuery.event.fix( e );
 877                         e.type = fix;
 878                         return jQuery.event.trigger( e, null, e.target );
 879                 }
 880         });
 881 }
 882
 883 jQuery.each(["bind", "one"], function( i, name ) {
 884         jQuery.fn[ name ] = function( type, data, fn ) {
 885                 // Handle object literals
 886                 if ( typeof type === "object" ) {
 887                         for ( var key in type ) {
 888                                 this[ name ](key, data, type[key], fn);
 889                         }
 890                         return this;
 891                 }
 892
 893                 if ( jQuery.isFunction( data ) || data === false ) {
 894                         fn = data;
 895                         data = undefined;
 896                 }
 897
 898                 var handler = name === "one" ? jQuery.proxy( fn, function( event ) {
 899                         jQuery( this ).unbind( event, handler );
 900                         return fn.apply( this, arguments );
 901                 }) : fn;
 902
 903                 if ( type === "unload" && name !== "one" ) {
 904                         this.one( type, data, fn );
 905
 906                 } else {
 907                         for ( var i = 0, l = this.length; i < l; i++ ) {
 908                                 jQuery.event.add( this[i], type, handler, data );
 909                         }
 910                 }
 911
 912                 return this;
 913         };
 914 });
 915
 916 jQuery.fn.extend({
 917         unbind: function( type, fn ) {
 918                 // Handle object literals
 919                 if ( typeof type === "object" && !type.preventDefault ) {
 920                         for ( var key in type ) {
 921                                 this.unbind(key, type[key]);
 922                         }
 923
 924                 } else {
 925                         for ( var i = 0, l = this.length; i < l; i++ ) {
 926                                 jQuery.event.remove( this[i], type, fn );
 927                         }
 928                 }
 929
 930                 return this;
 931         },
 932
 933         delegate: function( selector, types, data, fn ) {
 934                 return this.live( types, data, fn, selector );
 935         },
 936
 937         undelegate: function( selector, types, fn ) {
 938                 if ( arguments.length === 0 ) {
 939                                 return this.unbind( "live" );
 940
 941                 } else {
 942                         return this.die( types, null, fn, selector );
 943                 }
 944         },
 945
 946         trigger: function( type, data ) {
 947                 return this.each(function() {
 948                         jQuery.event.trigger( type, data, this );
 949                 });
 950         },
 951
 952         triggerHandler: function( type, data ) {
 953                 if ( this[0] ) {
 954                         var event = jQuery.Event( type );
 955                         event.preventDefault();
 956                         event.stopPropagation();
 957                         jQuery.event.trigger( event, data, this[0] );
 958                         return event.result;
 959                 }
 960         },
 961
 962         toggle: function( fn ) {
 963                 // Save reference to arguments for access in closure
 964                 var args = arguments, i = 1;
 965
 966                 // link all the functions, so any of them can unbind this click handler
 967                 while ( i < args.length ) {
 968                         jQuery.proxy( fn, args[ i++ ] );
 969                 }
 970
 971                 return this.click( jQuery.proxy( fn, function( event ) {
 972                         // Figure out which function to execute
 973                         var lastToggle = ( jQuery.data( this, "lastToggle" + fn.guid ) || 0 ) % i;
 974                         jQuery.data( this, "lastToggle" + fn.guid, lastToggle + 1 );
 975
 976                         // Make sure that clicks stop
 977                         event.preventDefault();
 978
 979                         // and execute the function
 980                         return args[ lastToggle ].apply( this, arguments ) || false;
 981                 }));
 982         },
 983
 984         hover: function( fnOver, fnOut ) {
 985                 return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
 986         }
 987 });
 988
 989 var liveMap = {
 990         focus: "focusin",
 991         blur: "focusout",
 992         mouseenter: "mouseover",
 993         mouseleave: "mouseout"
 994 };
 995
 996 jQuery.each(["live", "die"], function( i, name ) {
 997         jQuery.fn[ name ] = function( types, data, fn, origSelector /* Internal Use Only */ ) {
 998                 var type, i = 0, match, namespaces, preType,
 999                         selector = origSelector || this.selector,
1000                         context = origSelector ? this : jQuery( this.context );
1001
1002                 if ( typeof types === "object" && !types.preventDefault ) {
1003                         for ( var key in types ) {
1004                                 context[ name ]( key, data, types[key], selector );
1005                         }
1006
1007                         return this;
1008                 }
1009
1010                 if ( jQuery.isFunction( data ) ) {
1011                         fn = data;
1012                         data = undefined;
1013                 }
1014
1015                 types = (types || "").split(" ");
1016
1017                 while ( (type = types[ i++ ]) != null ) {
1018                         match = rnamespaces.exec( type );
1019                         namespaces = "";
1020
1021                         if ( match )  {
1022                                 namespaces = match[0];
1023                                 type = type.replace( rnamespaces, "" );
1024                         }
1025
1026                         if ( type === "hover" ) {
1027                                 types.push( "mouseenter" + namespaces, "mouseleave" + namespaces );
1028                                 continue;
1029                         }
1030
1031                         preType = type;
1032
1033                         if ( type === "focus" || type === "blur" ) {
1034                                 types.push( liveMap[ type ] + namespaces );
1035                                 type = type + namespaces;
1036
1037                         } else {
1038                                 type = (liveMap[ type ] || type) + namespaces;
1039                         }
1040
1041                         if ( name === "live" ) {
1042                                 // bind live handler
1043                                 for ( var j = 0, l = context.length; j < l; j++ ) {
1044                                         jQuery.event.add( context[j], "live." + liveConvert( type, selector ),
1045                                                 { data: data, selector: selector, handler: fn, origType: type, origHandler: fn, preType: preType } );
1046                                 }
1047
1048                         } else {
1049                                 // unbind live handler
1050                                 context.unbind( "live." + liveConvert( type, selector ), fn );
1051                         }
1052                 }
1053
1054                 return this;
1055         };
1056 });
1057
1058 function liveHandler( event ) {
1059         var stop, maxLevel, elems = [], selectors = [],
1060                 related, match, handleObj, elem, j, i, l, data, close, namespace, ret,
1061                 events = jQuery.data( this, this.nodeType ? "events" : "__events__" );
1062
1063         if ( typeof events === "function" ) {
1064                 events = events.events;
1065         }
1066
1067         // Make sure we avoid non-left-click bubbling in Firefox (#3861)
1068         if ( event.liveFired === this || !events || !events.live || event.button && event.type === "click" ) {
1069                 return;
1070         }
1071
1072         if ( event.namespace ) {
1073                 namespace = new RegExp("(^|\\.)" + event.namespace.split(".").join("\\.(?:.*\\.)?") + "(\\.|$)");
1074         }
1075
1076         event.liveFired = this;
1077
1078         var live = events.live.slice(0);
1079
1080         for ( j = 0; j < live.length; j++ ) {
1081                 handleObj = live[j];
1082
1083                 if ( handleObj.origType.replace( rnamespaces, "" ) === event.type ) {
1084                         selectors.push( handleObj.selector );
1085
1086                 } else {
1087                         live.splice( j--, 1 );
1088                 }
1089         }
1090
1091         match = jQuery( event.target ).closest( selectors, event.currentTarget );
1092
1093         for ( i = 0, l = match.length; i < l; i++ ) {
1094                 close = match[i];
1095
1096                 for ( j = 0; j < live.length; j++ ) {
1097                         handleObj = live[j];
1098
1099                         if ( close.selector === handleObj.selector && (!namespace || namespace.test( handleObj.namespace )) ) {
1100                                 elem = close.elem;
1101                                 related = null;
1102
1103                                 // Those two events require additional checking
1104                                 if ( handleObj.preType === "mouseenter" || handleObj.preType === "mouseleave" ) {
1105                                         event.type = handleObj.preType;
1106                                         related = jQuery( event.relatedTarget ).closest( handleObj.selector )[0];
1107                                 }
1108
1109                                 if ( !related || related !== elem ) {
1110                                         elems.push({ elem: elem, handleObj: handleObj, level: close.level });
1111                                 }
1112                         }
1113                 }
1114         }
1115
1116         for ( i = 0, l = elems.length; i < l; i++ ) {
1117                 match = elems[i];
1118
1119                 if ( maxLevel && match.level > maxLevel ) {
1120                         break;
1121                 }
1122
1123                 event.currentTarget = match.elem;
1124                 event.data = match.handleObj.data;
1125                 event.handleObj = match.handleObj;
1126
1127                 ret = match.handleObj.origHandler.apply( match.elem, arguments );
1128
1129                 if ( ret === false || event.isPropagationStopped() ) {
1130                         maxLevel = match.level;
1131
1132                         if ( ret === false ) {
1133                                 stop = false;
1134                         }
1135                         if ( event.isImmediatePropagationStopped() ) {
1136                                 break;
1137                         }
1138                 }
1139         }
1140
1141         return stop;
1142 }
1143
1144 function liveConvert( type, selector ) {
1145         return (type && type !== "*" ? type + "." : "") + selector.replace(rperiod, "`").replace(rspace, "&");
1146 }
1147
1148 jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " +
1149         "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
1150         "change select submit keydown keypress keyup error").split(" "), function( i, name ) {
1151
1152         // Handle event binding
1153         jQuery.fn[ name ] = function( data, fn ) {
1154                 if ( fn == null ) {
1155                         fn = data;
1156                         data = null;
1157                 }
1158
1159                 return arguments.length > 0 ?
1160                         this.bind( name, data, fn ) :
1161                         this.trigger( name );
1162         };
1163
1164         if ( jQuery.attrFn ) {
1165                 jQuery.attrFn[ name ] = true;
1166         }
1167 });
1168
1169 // Prevent memory leaks in IE
1170 // Window isn't included so as not to unbind existing unload events
1171 // More info:
1172 //  - http://isaacschlueter.com/2006/10/msie-memory-leaks/
1173 if ( window.attachEvent && !window.addEventListener ) {
1174         jQuery(window).bind("unload", function() {
1175                 for ( var id in jQuery.cache ) {
1176                         if ( jQuery.cache[ id ].handle ) {
1177                                 // Try/Catch is to handle iframes being unloaded, see #4280
1178                                 try {
1179                                         jQuery.event.remove( jQuery.cache[ id ].handle.elem );
1180                                 } catch(e) {}
1181                         }
1182                 }
1183         });
1184 }
1185
1186 })( jQuery );