// around, causing it to be cloned in the process
if ( jQuery.browser.msie && element.setInterval != undefined )
element = window;
-
- // if data is passed, bind to handler
- if( data )
- handler.data = data;
-
+
// 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 = function() {
+ // Pass arguments and context to original handler
+ return fn.apply(this, arguments);
+ };
+
+ // Store data in unique handler
+ handler.data = data;
+
+ // Set the guid of unique handler to the same of original handler, so it can be removed
+ handler.guid = fn.guid;
+ }
// Init the element's event structure
if (!element.$events)
element.$events = {};
+
+ if (!element.$handle)
+ element.$handle = function() {
+ // returned undefined or false
+ var val;
+
+ // Handle the second event of a trigger and when
+ // an event is called after a page has unloaded
+ if ( typeof jQuery == "undefined" || jQuery.event.triggered )
+ return val;
+
+ val = jQuery.event.handle.apply(element, arguments);
+
+ return val;
+ };
// Get the current list of functions bound to this event
var handlers = element.$events[type];
- // If it hasn't been initialized yet
+ // Init the event handler queue
if (!handlers) {
- // Init the event handler queue
- handlers = element.$events[type] = {};
-
- // Remember an existing handler, if it's already there
- if (element["on" + type])
- handlers[0] = element["on" + type];
+ handlers = element.$events[type] = {};
+
+ // And bind the global event handler to the element
+ if (element.addEventListener)
+ element.addEventListener(type, element.$handle, false);
+ else
+ element.attachEvent("on" + type, element.$handle);
}
// Add the function to the element's handler list
handlers[handler.guid] = handler;
- // And bind the global event handler to the element
- element["on" + type] = this.handle;
-
// Remember the function in a global list (for triggering)
if (!this.global[type])
this.global[type] = [];
- this.global[type].push( element );
+ // Only add the element to the global list once
+ if (jQuery.inArray(element, this.global[type]) == -1)
+ this.global[type].push( element );
},
guid: 1,
// Detach an event or set of events from an element
remove: function(element, type, handler) {
- var events = element.$events, ret;
+ var events = element.$events, ret, index;
if ( events ) {
// type is actually an event object here
// remove generic event handler if no more handlers exist
for ( ret in events[type] ) break;
if ( !ret ) {
- ret = element["on" + type] = null;
+ if (element.removeEventListener)
+ element.removeEventListener(type, element.$handle, false);
+ else
+ element.detachEvent("on" + type, element.$handle);
+ ret = null;
delete events[type];
+
+ // Remove element from the global event type cache
+ while ( this.global[type] && ( (index = jQuery.inArray(element, this.global[type])) >= 0 ) )
+ delete this.global[type][index];
}
}
// Remove the expando if it's no longer used
for ( ret in events ) break;
if ( !ret )
- element.$events = null;
+ element.$handle = element.$events = null;
}
},
// Handle triggering a single element
else {
- var handler = element["on" + type ], val,
- fn = jQuery.isFunction( element[ type ] );
+ var val, ret, fn = jQuery.isFunction( element[ type ] || null );
+
+ // Pass along a fake event
+ data.unshift( this.fix({ type: type, target: element }) );
- if ( handler ) {
- // Pass along a fake event
- data.unshift( this.fix({ type: type, target: element }) );
-
- // Trigger the event
- if ( (val = handler.apply( element, data )) !== false )
- this.triggered = true;
- }
+ // Trigger the event
+ if ( jQuery.isFunction(element.$handle) && (val = element.$handle.apply( element, data )) !== false )
+ this.triggered = true;
- if ( fn && val !== false )
+ if ( fn && val !== false && !jQuery.nodeName(element, 'a') )
element[ type ]();
this.triggered = false;
},
handle: function(event) {
- // Handle the second event of a trigger and when
- // an event is called after a page has unloaded
- if ( typeof jQuery == "undefined" || jQuery.event.triggered ) return;
+ // returned undefined or false
+ var val;
// Empty object is for triggered events with no data
event = jQuery.event.fix( event || window.event || {} );
- // returned undefined or false
- var returnValue;
-
- var c = this.$events[event.type];
-
- var args = [].slice.call( arguments, 1 );
+ var c = this.$events && this.$events[event.type], args = [].slice.call( arguments, 1 );
args.unshift( event );
for ( var j in c ) {
if ( c[j].apply( this, args ) === false ) {
event.preventDefault();
event.stopPropagation();
- returnValue = false;
+ val = false;
}
}
// Clean up added properties in IE to prevent memory leak
- if (jQuery.browser.msie) event.target = event.preventDefault = event.stopPropagation = event.handler = event.data = null;
+ if (jQuery.browser.msie)
+ event.target = event.preventDefault = event.stopPropagation =
+ event.handler = event.data = null;
- return returnValue;
+ return val;
},
fix: function(event) {
+ // store a copy of the original event object
+ // and clone to set read-only properties
+ var originalEvent = event;
+ event = jQuery.extend({}, originalEvent);
+
+ // add preventDefault and stopPropagation since
+ // they will not work on the clone
+ event.preventDefault = function() {
+ // if preventDefault exists run it on the original event
+ if (originalEvent.preventDefault)
+ return originalEvent.preventDefault();
+ // otherwise set the returnValue property of the original event to false (IE)
+ originalEvent.returnValue = false;
+ };
+ event.stopPropagation = function() {
+ // if stopPropagation exists run it on the original event
+ if (originalEvent.stopPropagation)
+ return originalEvent.stopPropagation();
+ // otherwise set the cancelBubble property of the original event to true (IE)
+ originalEvent.cancelBubble = true;
+ };
+
// Fix target property, if necessary
if ( !event.target && event.srcElement )
event.target = event.srcElement;
+
+ // check if target is a textnode (safari)
+ if (jQuery.browser.safari && event.target.nodeType == 3)
+ event.target = originalEvent.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 == undefined && event.clientX != undefined ) {
+ if ( event.pageX == null && event.clientX != null ) {
var e = document.documentElement, b = document.body;
- event.pageX = event.clientX + (e.scrollLeft || b.scrollLeft);
- event.pageY = event.clientY + (e.scrollTop || b.scrollTop);
+ event.pageX = event.clientX + (e && e.scrollLeft || b.scrollLeft);
+ event.pageY = event.clientY + (e && e.scrollTop || b.scrollTop);
}
-
- // check if target is a textnode (safari)
- if (jQuery.browser.safari && event.target.nodeType == 3) {
- // store a copy of the original event object
- // and clone because target is read only
- var originalEvent = event;
- event = jQuery.extend({}, originalEvent);
- // get parentnode from textnode
- event.target = originalEvent.target.parentNode;
-
- // add preventDefault and stopPropagation since
- // they will not work on the clone
- event.preventDefault = function() {
- return originalEvent.preventDefault();
- };
- event.stopPropagation = function() {
- return originalEvent.stopPropagation();
- };
- }
+ // Add which for key events
+ if ( !event.which && (event.charCode || event.keyCode) )
+ event.which = event.charCode || event.keyCode;
- // fix preventDefault and stopPropagation
- if (!event.preventDefault)
- event.preventDefault = function() {
- this.returnValue = false;
- };
-
- if (!event.stopPropagation)
- event.stopPropagation = function() {
- this.cancelBubble = true;
- };
+ // 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 )
+ event.which = (event.button & 1 ? 1 : ( event.button & 2 ? 3 : ( event.button & 4 ? 2 : 0 ) ));
return event;
}
* data as the second parameter (and the handler function as the third), see
* second example.
*
+ * Calling bind with an event type of "unload" will automatically
+ * use the one method instead of bind to prevent memory leaks.
+ *
* @example $("p").bind("click", function(){
* alert( $(this).text() );
* });
* @cat Events
*/
bind: function( type, data, fn ) {
- return this.each(function(){
- jQuery.event.add( this, type, fn || data, data );
+ return type == "unload" ? this.one(type, data, fn) : this.each(function(){
+ jQuery.event.add( this, type, fn || data, fn && data );
});
},
* Binds a handler to a particular event (like click) for each matched element.
* The handler is executed only once for each element. Otherwise, the same rules
* as described in bind() apply.
- The event handler is passed an event object that you can use to prevent
+ * The event handler is passed an event object that you can use to prevent
* default behaviour. To stop both default action and event bubbling, your handler
* has to return false.
*
jQuery.event.add( this, type, function(event) {
jQuery(this).unbind(event);
return (fn || data).apply( this, arguments);
- }, data);
+ }, fn && data);
});
},
return this.click(function(e) {
// Figure out which function to execute
- this.lastToggle = this.lastToggle == 0 ? 1 : 0;
+ this.lastToggle = 0 == this.lastToggle ? 1 : 0;
// Make sure that clicks stop
e.preventDefault();
// A private function for handling mouse 'hovering'
function handleHover(e) {
// Check if mouse(over|out) are still within the same parent element
- var p = (e.type == "mouseover" ? e.fromElement : e.toElement) || e.relatedTarget;
+ var p = e.relatedTarget;
// Traverse up the tree
while ( p && p != this ) try { p = p.parentNode } catch(e) { p = this; };
f.apply( document, [jQuery] );
// Otherwise, remember the function for later
- else {
+ else
// Add the function to the wait list
jQuery.readyList.push( function() { return f.apply(this, [jQuery]) } );
- }
return this;
}
// Reset the list of functions
jQuery.readyList = null;
}
- // Remove event lisenter to avoid memory leak
+ // Remove event listener to avoid memory leak
if ( jQuery.browser.mozilla || jQuery.browser.opera )
document.removeEventListener( "DOMContentLoaded", jQuery.ready, false );
+
+ // Remove script element used by IE hack
+ if( !window.frames.length ) // don't remove if frames are present (#1187)
+ jQuery(window).load(function(){ jQuery("#__ie_init").remove(); });
}
}
});
if ( script )
script.onreadystatechange = function() {
if ( this.readyState != "complete" ) return;
- this.parentNode.removeChild( this );
jQuery.ready();
};
var els = global[type], i = els.length;
if ( i && type != 'unload' )
do
- jQuery.event.remove(els[i-1], type);
+ els[i-1] && jQuery.event.remove(els[i-1], type);
while (--i);
}
});
git.asbjorn.biz / jquery.git / blobdiff