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|
/*
* A number of helper functions used for managing events.
* Many of the ideas behind this code originated from
* Dean Edwards' addEvent library.
*/
jQuery.event = {
// Bind an event to an element
// Original by Dean Edwards
add: function( elem, types, handler, data ) {
if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
return;
}
// For whatever reason, IE has trouble passing the window object
// around, causing it to be cloned in the process
if ( elem.setInterval && ( elem !== window && !elem.frameElement ) ) {
elem = window;
}
// Make sure that the function being executed has a unique ID
if ( !handler.guid ) {
handler.guid = this.guid++;
}
// if data is passed, bind to handler
if ( data !== undefined ) {
// Create temporary function pointer to original handler
var fn = handler;
// Create unique handler function, wrapped around original handler
handler = this.proxy( fn );
// Store data in unique handler
handler.data = data;
}
// Init the element's event structure
var events = jQuery.data( elem, "events" ) || jQuery.data( elem, "events", {} ),
handle = jQuery.data( elem, "handle" ) || jQuery.data( elem, "handle", function() {
// Handle the second event of a trigger and when
// an event is called after a page has unloaded
return typeof jQuery !== "undefined" && !jQuery.event.triggered ?
jQuery.event.handle.apply( arguments.callee.elem, arguments ) :
undefined;
});
// Add elem as a property of the handle function
// This is to prevent a memory leak with non-native
// event in IE.
handle.elem = elem;
// Handle multiple events separated by a space
// jQuery(...).bind("mouseover mouseout", fn);
types = types.split( /\s+/ );
var type, i=0;
while ( (type = types[ i++ ]) ) {
// Namespaced event handlers
var namespaces = type.split(".");
type = namespaces.shift();
handler.type = namespaces.slice(0).sort().join(".");
// Get the current list of functions bound to this event
var handlers = events[ type ],
special = this.special[ type ] || {};
if ( special.add ) {
var modifiedHandler = special.add.call( elem, handler, data, namespaces );
if ( modifiedHandler && jQuery.isFunction( modifiedHandler ) ) {
modifiedHandler.guid = modifiedHandler.guid || handler.guid;
handler = modifiedHandler;
}
}
// Init the event handler queue
if ( !handlers ) {
handlers = events[ type ] = {};
// Check for a special event handler
// Only use addEventListener/attachEvent if the special
// events handler returns false
if ( !special.setup || special.setup.call( elem, data, namespaces ) === false ) {
// Bind the global event handler to the element
if ( elem.addEventListener ) {
elem.addEventListener( type, handle, false );
} else if ( elem.attachEvent ) {
elem.attachEvent( "on" + type, handle );
}
}
}
// Add the function to the element's handler list
handlers[ handler.guid ] = handler;
// Keep track of which events have been used, for global triggering
this.global[ type ] = true;
}
// Nullify elem to prevent memory leaks in IE
elem = null;
},
guid: 1,
global: {},
// Detach an event or set of events from an element
remove: function( elem, types, handler ) {
// don't do events on text and comment nodes
if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
return;
}
var events = jQuery.data( elem, "events" ), ret, type;
if ( events ) {
// Unbind all events for the element
if ( types === undefined || (typeof types === "string" && types.charAt(0) === ".") ) {
for ( type in events ) {
this.remove( elem, type + (types || "") );
}
} else {
// types is actually an event object here
if ( types.type ) {
handler = types.handler;
types = types.type;
}
// Handle multiple events seperated by a space
// jQuery(...).unbind("mouseover mouseout", fn);
types = types.split(/\s+/);
var i = 0;
while ( (type = types[ i++ ]) ) {
// Namespaced event handlers
var namespaces = type.split(".");
type = namespaces.shift();
var all = !namespaces.length,
namespace = new RegExp("(^|\\.)" + namespaces.slice(0).sort().join("\\.(?:.*\\.)?") + "(\\.|$)"),
special = this.special[ type ] || {};
if ( events[ type ] ) {
// remove the given handler for the given type
if ( handler ) {
delete events[ type ][ handler.guid ];
// remove all handlers for the given type
} else {
for ( var handle in events[ type ] ) {
// Handle the removal of namespaced events
if ( all || namespace.test( events[ type ][ handle ].type ) ) {
delete events[ type ][ handle ];
}
}
}
if ( special.remove ) {
special.remove.call( elem, namespaces );
}
// remove generic event handler if no more handlers exist
for ( ret in events[ type ] ) {
break;
}
if ( !ret ) {
if ( !special.teardown || special.teardown.call( elem, namespaces ) === false ) {
if ( elem.removeEventListener ) {
elem.removeEventListener( type, jQuery.data( elem, "handle" ), false );
} else if ( elem.detachEvent ) {
elem.detachEvent( "on" + type, jQuery.data( elem, "handle" ) );
}
}
ret = null;
delete events[ type ];
}
}
}
}
// Remove the expando if it's no longer used
for ( ret in events ) {
break;
}
if ( !ret ) {
var handle = jQuery.data( elem, "handle" );
if ( handle ) {
handle.elem = null;
}
jQuery.removeData( elem, "events" );
jQuery.removeData( elem, "handle" );
}
}
},
// bubbling is internal
trigger: function( event, data, elem /*, bubbling */ ) {
// Event object or event type
var type = event.type || event,
bubbling = arguments[3];
if ( !bubbling ) {
event = typeof event === "object" ?
// jQuery.Event object
event[expando] ? event :
// Object literal
jQuery.extend( jQuery.Event(type), event ) :
// Just the event type (string)
jQuery.Event(type);
if ( type.indexOf("!") >= 0 ) {
event.type = type = type.slice(0, -1);
event.exclusive = true;
}
// Handle a global trigger
if ( !elem ) {
// Don't bubble custom events when global (to avoid too much overhead)
event.stopPropagation();
// Only trigger if we've ever bound an event for it
if ( this.global[ type ] ) {
jQuery.each( jQuery.cache, function() {
if ( this.events && this.events[type] ) {
jQuery.event.trigger( event, data, this.handle.elem );
}
});
}
}
// Handle triggering a single element
// don't do events on text and comment nodes
if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
return undefined;
}
// Clean up in case it is reused
event.result = undefined;
event.target = elem;
// Clone the incoming data, if any
data = jQuery.makeArray( data );
data.unshift( event );
}
event.currentTarget = elem;
// Trigger the event, it is assumed that "handle" is a function
var handle = jQuery.data( elem, "handle" );
if ( handle ) {
handle.apply( elem, data );
}
var nativeFn, nativeHandler;
try {
nativeFn = elem[ type ];
nativeHandler = elem[ "on" + type ];
// prevent IE from throwing an error for some elements with some event types, see #3533
} catch (e) {}
// Handle triggering native .onfoo handlers (and on links since we don't call .click() for links)
if ( (!nativeFn || (jQuery.nodeName(elem, 'a') && type === "click")) && nativeHandler && nativeHandler.apply( elem, data ) === false ) {
event.result = false;
}
// Trigger the native events (except for clicks on links)
if ( !bubbling && nativeFn && !event.isDefaultPrevented() && !(jQuery.nodeName(elem, 'a') && type === "click") ) {
this.triggered = true;
try {
nativeFn();
// prevent IE from throwing an error for some hidden elements
} catch (e) {}
}
this.triggered = false;
if ( !event.isPropagationStopped() ) {
var parent = elem.parentNode || elem.ownerDocument;
if ( parent ) {
jQuery.event.trigger( event, data, parent, true );
}
}
},
handle: function( event ) {
// returned undefined or false
var all, handlers;
event = arguments[0] = jQuery.event.fix( event || window.event );
event.currentTarget = this;
// Namespaced event handlers
var namespaces = event.type.split(".");
event.type = namespaces.shift();
// Cache this now, all = true means, any handler
all = !namespaces.length && !event.exclusive;
var namespace = new RegExp("(^|\\.)" + namespaces.slice(0).sort().join("\\.(?:.*\\.)?") + "(\\.|$)");
handlers = ( jQuery.data(this, "events") || {} )[ event.type ];
for ( var j in handlers ) {
var handler = handlers[ j ];
// Filter the functions by class
if ( all || namespace.test(handler.type) ) {
// Pass in a reference to the handler function itself
// So that we can later remove it
event.handler = handler;
event.data = handler.data;
var ret = handler.apply( this, arguments );
if ( ret !== undefined ) {
event.result = ret;
if ( ret === false ) {
event.preventDefault();
event.stopPropagation();
}
}
if ( event.isImmediatePropagationStopped() ) {
break;
}
}
}
},
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(" "),
fix: function( event ) {
if ( event[ expando ] ) {
return event;
}
// store a copy of the original event object
// and "clone" to set read-only properties
var originalEvent = event;
event = jQuery.Event( originalEvent );
for ( var i = this.props.length, prop; i; ) {
prop = this.props[ --i ];
event[ prop ] = originalEvent[ prop ];
}
// Fix target property, if necessary
if ( !event.target ) {
event.target = event.srcElement || document; // Fixes #1925 where srcElement might not be defined either
}
// check if target is a textnode (safari)
if ( event.target.nodeType === 3 ) {
event.target = event.target.parentNode;
}
// Add relatedTarget, if necessary
if ( !event.relatedTarget && event.fromElement ) {
event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;
}
// Calculate pageX/Y if missing and clientX/Y available
if ( event.pageX == null && event.clientX != null ) {
var doc = document.documentElement, body = document.body;
event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);
}
// Add which for key events
if ( !event.which && ((event.charCode || event.charCode === 0) ? event.charCode : event.keyCode) ) {
event.which = event.charCode || event.keyCode;
}
// Add metaKey to non-Mac browsers (use ctrl for PC's and Meta for Macs)
if ( !event.metaKey && event.ctrlKey ) {
event.metaKey = event.ctrlKey;
}
// Add which for click: 1 == left; 2 == middle; 3 == right
// Note: button is not normalized, so don't use it
if ( !event.which && event.button !== undefined ) {
event.which = (event.button & 1 ? 1 : ( event.button & 2 ? 3 : ( event.button & 4 ? 2 : 0 ) ));
}
return event;
},
proxy: function( fn, proxy, thisObject ) {
if ( proxy !== undefined && !jQuery.isFunction( proxy ) ) {
thisObject = proxy;
proxy = undefined;
}
// FIXME: Should proxy be redefined to be applied with thisObject if defined?
proxy = proxy || function() { return fn.apply( thisObject !== undefined ? thisObject : this, arguments ); };
// Set the guid of unique handler to the same of original handler, so it can be removed
proxy.guid = fn.guid = fn.guid || proxy.guid || this.guid++;
// So proxy can be declared as an argument
return proxy;
},
special: {
ready: {
// Make sure the ready event is setup
setup: bindReady,
teardown: function() {}
},
live: {
add: function( proxy, data, namespaces ) {
jQuery.extend( proxy, data || {} );
proxy.guid += data.selector + data.live;
jQuery.event.add( this, data.live, liveHandler, data );
},
remove: function( namespaces ) {
if ( namespaces.length ) {
var remove = 0, name = new RegExp("(^|\\.)" + namespaces[0] + "(\\.|$)");
jQuery.each( (jQuery.data(this, "events").live || {}), function() {
if ( name.test(this.type) ) {
remove++;
}
});
if ( remove < 1 ) {
jQuery.event.remove( this, namespaces[0], liveHandler );
}
}
}
}
}
};
jQuery.Event = function( src ){
// Allow instantiation without the 'new' keyword
if ( !this.preventDefault ) {
return new jQuery.Event( src );
}
// Event object
if ( src && src.type ) {
this.originalEvent = src;
this.type = src.type;
// Event type
} else {
this.type = src;
}
// timeStamp is buggy for some events on Firefox(#3843)
// So we won't rely on the native value
this.timeStamp = now();
// Mark it as fixed
this[ expando ] = true;
};
function returnFalse() {
return false;
}
function returnTrue() {
return true;
}
// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
jQuery.Event.prototype = {
preventDefault: function() {
this.isDefaultPrevented = returnTrue;
var e = this.originalEvent;
if ( !e ) {
return;
}
// if preventDefault exists run it on the original event
if ( e.preventDefault ) {
e.preventDefault();
}
// otherwise set the returnValue property of the original event to false (IE)
e.returnValue = false;
},
stopPropagation: function() {
this.isPropagationStopped = returnTrue;
var e = this.originalEvent;
if ( !e ) {
return;
}
// if stopPropagation exists run it on the original event
if ( e.stopPropagation ) {
e.stopPropagation();
}
// otherwise set the cancelBubble property of the original event to true (IE)
e.cancelBubble = true;
},
stopImmediatePropagation: function(){
this.isImmediatePropagationStopped = returnTrue;
this.stopPropagation();
},
isDefaultPrevented: returnFalse,
isPropagationStopped: returnFalse,
isImmediatePropagationStopped: returnFalse
};
// Checks if an event happened on an element within another element
// Used in jQuery.event.special.mouseenter and mouseleave handlers
var withinElement = function( event ) {
// Check if mouse(over|out) are still within the same parent element
var parent = event.relatedTarget;
// Traverse up the tree
while ( parent && parent != this ) {
// Firefox sometimes assigns relatedTarget a XUL element
// which we cannot access the parentNode property of
try { parent = parent.parentNode; }
// assuming we've left the element since we most likely mousedover a xul element
catch(e) { break; }
}
if ( parent != this ) {
// set the correct event type
event.type = event.data;
// handle event if we actually just moused on to a non sub-element
jQuery.event.handle.apply( this, arguments );
}
},
// In case of event delegation, we only need to rename the event.type,
// liveHandler will take care of the rest.
delegate = function( event ) {
event.type = event.data;
jQuery.event.handle.apply( this, arguments );
};
// Create mouseenter and mouseleave events
jQuery.each({
mouseover: "mouseenter",
mouseout: "mouseleave"
}, function( orig, fix ) {
jQuery.event.special[ fix ] = {
setup: function(data){
jQuery.event.add( this, orig, data && data.selector ? delegate : withinElement, fix );
},
teardown: function(data){
jQuery.event.remove( this, orig, data && data.selector ? delegate : withinElement );
}
};
});
(function() {
var event = jQuery.event,
special = event.special,
handle = event.handle;
special.submit = {
setup: function(data, namespaces) {
if(data.selector) {
event.add(this, 'click.specialSubmit', function(e, eventData) {
if(jQuery(e.target).filter(":submit, :image").closest(data.selector).length) {
e.type = "submit";
return handle.call( this, e, eventData );
}
});
event.add(this, 'keypress.specialSubmit', function( e, eventData ) {
if(jQuery(e.target).filter(":text, :password").closest(data.selector).length) {
e.type = "submit";
return handle.call( this, e, eventData );
}
});
} else {
return false;
}
},
remove: function(namespaces) {
event.remove(this, 'click.specialSubmit');
event.remove(this, 'keypress.specialSubmit');
}
};
})();
// Create "bubbling" focus and blur events
jQuery.each({
focus: "focusin",
blur: "focusout"
}, function( orig, fix ){
var event = jQuery.event,
handle = event.handle;
function ieHandler() {
arguments[0].type = orig;
return handle.apply(this, arguments);
}
event.special[orig] = {
setup:function() {
if ( this.addEventListener )
this.addEventListener( orig, handle, true );
else
event.add( this, fix, ieHandler );
},
teardown:function() {
if ( this.removeEventListener )
this.removeEventListener( orig, handle, true );
else
event.remove( this, fix, ieHandler );
}
};
});
jQuery.fn.extend({
// TODO: make bind(), unbind() and one() DRY!
bind: function( type, data, fn, thisObject ) {
// Handle object literals
if ( typeof type === "object" ) {
for ( var key in type ) {
this.bind(key, data, type[key], fn);
}
return this;
}
if ( jQuery.isFunction( data ) ) {
thisObject = fn;
fn = data;
data = undefined;
}
fn = thisObject === undefined ? fn : jQuery.event.proxy( fn, thisObject );
return type === "unload" ? this.one(type, data, fn, thisObject) : this.each(function() {
jQuery.event.add( this, type, fn, data );
});
},
one: function( type, data, fn, thisObject ) {
// Handle object literals
if ( typeof type === "object" ) {
for ( var key in type ) {
this.one(key, data, type[key], fn);
}
return this;
}
if ( jQuery.isFunction( data ) ) {
thisObject = fn;
fn = data;
data = undefined;
}
fn = thisObject === undefined ? fn : jQuery.event.proxy( fn, thisObject );
var one = jQuery.event.proxy( fn, function( event ) {
jQuery( this ).unbind( event, one );
return fn.apply( this, arguments );
});
return this.each(function() {
jQuery.event.add( this, type, one, data );
});
},
unbind: function( type, fn ) {
// Handle object literals
if ( typeof type === "object" && !type.preventDefault ) {
for ( var key in type ) {
this.unbind(key, type[key]);
}
return this;
}
return this.each(function() {
jQuery.event.remove( this, type, fn );
});
},
trigger: function( type, data ) {
return this.each(function() {
jQuery.event.trigger( type, data, this );
});
},
triggerHandler: function( type, data ) {
if ( this[0] ) {
var event = jQuery.Event( type );
event.preventDefault();
event.stopPropagation();
jQuery.event.trigger( event, data, this[0] );
return event.result;
}
},
toggle: function( fn ) {
// Save reference to arguments for access in closure
var args = arguments, i = 1;
// link all the functions, so any of them can unbind this click handler
while( i < args.length ) {
jQuery.event.proxy( fn, args[ i++ ] );
}
return this.click( jQuery.event.proxy( fn, function( event ) {
// Figure out which function to execute
var lastToggle = ( jQuery.data( this, 'lastToggle' + fn.guid ) || 0 ) % i;
jQuery.data( this, 'lastToggle' + fn.guid, lastToggle + 1 );
// Make sure that clicks stop
event.preventDefault();
// and execute the function
return args[ lastToggle ].apply( this, arguments ) || false;
}));
},
hover: function( fnOver, fnOut ) {
return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
},
ready: function( fn ) {
// Attach the listeners
bindReady();
// If the DOM is already ready
if ( jQuery.isReady ) {
// Execute the function immediately
fn.call( document, jQuery );
// Otherwise, remember the function for later
} else {
// Add the function to the wait list
jQuery.readyList.push( fn );
}
return this;
},
live: function( type, data, fn, thisObject ) {
if ( jQuery.isFunction( data ) ) {
if ( fn !== undefined ) {
thisObject = fn;
}
fn = data;
data = undefined;
}
jQuery( this.context ).bind( liveConvert( type, this.selector ), {
data: data, selector: this.selector, live: type
}, fn, thisObject );
return this;
},
die: function( type, fn ) {
jQuery( this.context ).unbind( liveConvert( type, this.selector ), fn ? { guid: fn.guid + this.selector + type } : null );
return this;
}
});
function liveHandler( event ) {
var stop = true, elems = [], args = arguments;
jQuery.each( jQuery.data( this, "events" ).live || [], function( i, fn ) {
if ( fn.live === event.type ) {
var elem = jQuery( event.target ).closest( fn.selector, event.currentTarget )[0],
related;
if ( elem ) {
// Those two events require additional checking
if ( fn.live === "mouseenter" || fn.live === "mouseleave" ) {
related = jQuery( event.relatedTarget ).closest( fn.selector )[0];
}
if ( !related || related !== elem ) {
elems.push({ elem: elem, fn: fn });
}
}
}
});
elems.sort(function( a, b ) {
return a.closer - b.closer;
});
jQuery.each(elems, function() {
event.currentTarget = this.elem;
event.data = this.fn.data;
if ( this.fn.apply( this.elem, args ) === false ) {
return (stop = false);
}
});
return stop;
}
function liveConvert( type, selector ) {
return ["live", type, selector.replace(/\./g, "`").replace(/ /g, "|")].join(".");
}
jQuery.extend({
isReady: false,
readyList: [],
// Handle when the DOM is ready
ready: function() {
// Make sure that the DOM is not already loaded
if ( !jQuery.isReady ) {
if ( !document.body ) {
return setTimeout( jQuery.ready, 13 );
}
// Remember that the DOM is ready
jQuery.isReady = true;
// If there are functions bound, to execute
if ( jQuery.readyList ) {
// Execute all of them
var fn, i = 0;
while ( (fn = jQuery.readyList[ i++ ]) ) {
fn.call( document, jQuery );
}
// Reset the list of functions
jQuery.readyList = null;
}
// Trigger any bound ready events
jQuery( document ).triggerHandler( "ready" );
}
}
});
var readyBound = false;
function bindReady() {
if ( readyBound ) return;
readyBound = true;
// Catch cases where $(document).ready() is called after the
// browser event has already occurred.
if ( document.readyState === "complete" ) {
return jQuery.ready();
}
// Mozilla, Opera and webkit nightlies currently support this event
if ( document.addEventListener ) {
// Use the handy event callback
document.addEventListener( "DOMContentLoaded", function() {
document.removeEventListener( "DOMContentLoaded", arguments.callee, false );
jQuery.ready();
}, false );
// If IE event model is used
} else if ( document.attachEvent ) {
// ensure firing before onload,
// maybe late but safe also for iframes
document.attachEvent("onreadystatechange", function() {
// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
if ( document.readyState === "complete" ) {
document.detachEvent( "onreadystatechange", arguments.callee );
jQuery.ready();
}
});
// If IE and not a frame
// continually check to see if the document is ready
var toplevel = false;
try {
toplevel = window.frameElement == null;
} catch(e){}
if ( document.documentElement.doScroll && toplevel ) (function() {
if ( jQuery.isReady ) {
return;
}
try {
// If IE is used, use the trick by Diego Perini
// http://javascript.nwbox.com/IEContentLoaded/
document.documentElement.doScroll("left");
} catch( error ) {
setTimeout( arguments.callee, 0 );
return;
}
// and execute any waiting functions
jQuery.ready();
})();
}
// A fallback to window.onload, that will always work
jQuery.event.add( window, "load", jQuery.ready );
}
jQuery.each( ("blur focus load resize scroll unload click dblclick " +
"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
"change select submit keydown keypress keyup error").split(" "), function( i, name ) {
// Handle event binding
jQuery.fn[ name ] = function( fn ) {
return fn ? this.bind( name, fn ) : this.trigger( name );
};
});
// Prevent memory leaks in IE
// Window isn't included so as not to unbind existing unload events
// More info:
// - http://isaacschlueter.com/2006/10/msie-memory-leaks/
/*@cc_on
jQuery( window ).bind( 'unload', function() {
for ( var id in jQuery.cache ) {
// Skip the window
if ( id != 1 && jQuery.cache[ id ].handle ) {
jQuery.event.remove( jQuery.cache[ id ].handle.elem );
}
}
});
@*/
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