Packagemx.events
Classpublic class CollectionEvent
InheritanceCollectionEvent Inheritance Event Inheritance Object

The mx.events.CollectionEvent class represents an event that is dispatched when the associated collection changes.

See also

FlexEvent.CURSOR_UPDATE

Public Properties
 PropertyDefined by
 Inheritedbubbles : Boolean
Indicates whether an event is a bubbling event.
Event
 Inheritedcancelable : Boolean
Indicates whether the behavior associated with the event can be prevented.
Event
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
 InheritedcurrentTarget : Object
The object that is actively processing the Event object with an event listener.
Event
 InheritedeventPhase : uint
The current phase in the event flow.
Event
  items : Array
When the kind is CollectionEventKind.ADD or CollectionEventKind.REMOVE the items property is an Array of added/removed items.
CollectionEvent
  kind : String
Indicates the kind of event that occurred.
CollectionEvent
  location : int
When the kind value is CollectionEventKind.ADD, CollectionEventKind.MOVE, CollectionEventKind.REMOVE, or CollectionEventKind.REPLACE, this property is the zero-base index in the collection of the item(s) specified in the items property.
CollectionEvent
  oldLocation : int
When the kind value is CollectionEventKind.MOVE, this property is the zero-based index in the target collection of the previous location of the item(s) specified by the items property.
CollectionEvent
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
 Inheritedtarget : Object
The event target.
Event
 Inheritedtype : String
The type of event.
Event
Public Methods
 MethodDefined by
  
CollectionEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, kind:String = null, location:int = -1, oldLocation:int = -1, items:Array = null)
Constructor.
CollectionEvent
 Inherited
clone():Event
Duplicates an instance of an Event subclass.
Event
 Inherited
formatToString(className:String, ... arguments):String
A utility function for implementing the toString() method in your custom Event class.
Event
 Inherited
hasOwnProperty(name:String):Boolean
Indicates whether an object has a specified property defined.
Object
 Inherited
isDefaultPrevented():Boolean
Checks whether preventDefault() has been called on the event.
Event
 Inherited
isPrototypeOf(theClass:Object):Boolean
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
preventDefault():void
Cancels an event's default behavior if that behavior can be canceled.
Event
 Inherited
propertyIsEnumerable(name:String):Boolean
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
stopImmediatePropagation():void
Prevents processing of any event listeners in the current node and any subsequent nodes in the event flow.
Event
 Inherited
stopPropagation():void
Prevents processing of any event listeners in nodes subsequent to the current node in the event flow.
Event
 Inherited
toString():String
Returns a string containing all the properties of the Event object.
Event
 Inherited
valueOf():Object
Returns the primitive value of the specified object.
Object
Public Constants
 ConstantDefined by
 InheritedACTIVATE : String = "activate"
[static] Defines the value of the type property of an activate event object.
Event
 InheritedADDED : String = "added"
[static] Defines the value of the type property of an added event object.
Event
 InheritedCANCEL : String = "cancel"
[static] Defines the value of the type property of a cancel event object.
Event
 InheritedCHANGE : String = "change"
[static] Defines the value of the type property of a change event object.
Event
 InheritedCLOSE : String = "close"
[static] Defines the value of the type property of a close event object.
Event
  COLLECTION_CHANGE : String = "collectionChange"
[static] The CollectionEvent.COLLECTION_CHANGE constant defines the value of the type property of the event object for an event that is dispatched when a collection has changed.
CollectionEvent
 InheritedCOMPLETE : String = "complete"
[static] Defines the value of the type property of a complete event object.
Event
 InheritedCONNECT : String = "connect"
[static] Defines the value of the type property of a connect event object.
Event
 InheritedDEACTIVATE : String = "deactivate"
[static] Defines the value of the type property of a deactivate event object.
Event
 InheritedENTER_FRAME : String = "enterFrame"
[static] Defines the value of the type property of an enterFrame event object.
Event
 InheritedID3 : String = "id3"
[static] Defines the value of the type property of an id3 event object.
Event
 InheritedINIT : String = "init"
[static] Defines the value of the type property of an init event object.
Event
 InheritedMOUSE_LEAVE : String = "mouseLeave"
[static] Defines the value of the type property of a mouseLeave event object.
Event
 InheritedOPEN : String = "open"
[static] Defines the value of the type property of an open event object.
Event
 InheritedREMOVED : String = "removed"
[static] Defines the value of the type property of a removed event object.
Event
 InheritedRENDER : String = "render"
[static] Defines the value of the type property of a render event object.
Event
 InheritedRESIZE : String = "resize"
[static] Defines the value of the type property of a resize event object.
Event
 InheritedSCROLL : String = "scroll"
[static] Defines the value of the type property of a scroll event object.
Event
 InheritedSELECT : String = "select"
[static] Defines the value of the type property of a select event object.
Event
 InheritedSOUND_COMPLETE : String = "soundComplete"
[static] Defines the value of the type property of a soundComplete event object.
Event
 InheritedTAB_CHILDREN_CHANGE : String = "tabChildrenChange"
[static] Defines the value of the type property of a tabChildrenChange event object.
Event
 InheritedTAB_ENABLED_CHANGE : String = "tabEnabledChange"
[static] Defines the value of the type property of a tabEnabledChange event object.
Event
 InheritedTAB_INDEX_CHANGE : String = "tabIndexChange"
[static] Defines the value of the type property of a tabIndexChange event object.
Event
 InheritedUNLOAD : String = "unload"
[static] Defines the value of the type property of an unload event object.
Event
Property detail
itemsproperty
public var items:Array

When the kind is CollectionEventKind.ADD or CollectionEventKind.REMOVE the items property is an Array of added/removed items. When the kind is CollectionEventKind.REPLACE or CollectionEventKind.UPDATE the items property is an Array of PropertyChangeEvent objects with information about the items affected by the event. When a value changes, query the newValue and oldValue fields of the PropertyChangeEvent objects to find out what the old and new values were. When the kind is CollectionEventKind.REFRESH or CollectionEventKind.RESET, this array has zero length.

The default value is [ ].

See also

PropertyChangeEvent
kindproperty 
public var kind:String

Indicates the kind of event that occurred. The property value can be one of the values in the CollectionEventKind class, or null, which indicates that the kind is unknown.

The default value is null.

See also

CollectionEventKind
locationproperty 
public var location:int

When the kind value is CollectionEventKind.ADD, CollectionEventKind.MOVE, CollectionEventKind.REMOVE, or CollectionEventKind.REPLACE, this property is the zero-base index in the collection of the item(s) specified in the items property.

The default value is -1.

See also

CollectionEventKind
oldLocationproperty 
public var oldLocation:int

When the kind value is CollectionEventKind.MOVE, this property is the zero-based index in the target collection of the previous location of the item(s) specified by the items property.

The default value is -1.

Constructor detail
CollectionEvent()constructor
public function CollectionEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, kind:String = null, location:int = -1, oldLocation:int = -1, items:Array = null)

Constructor.

Parameters
type:String — The event type; indicates the action that triggered the event.
 
bubbles:Boolean (default = false) — Specifies whether the event can bubble up the display list hierarchy.
 
cancelable:Boolean (default = false) — Specifies whether the behavior associated with the event can be prevented.
 
kind:String (default = null) — Indicates the kind of event that occured. The parameter value can be one of the values in the CollectionEventKind class, or null, which indicates that the kind is unknown.
 
location:int (default = -1) — When the kind is CollectionEventKind.ADD, CollectionEventKind.MOVE, CollectionEventKind.REMOVE, or CollectionEventKind.REPLACE, this value indicates at what location the item(s) specified in the items property can be found within the target collection.
 
oldLocation:int (default = -1) — When the kind is CollectionEventKind.MOVE, this value indicates the old location within the target collection of the item(s) specified in the items property.
 
items:Array (default = null) — Array of objects with information about the items affected by the event, as described in the items property. When the kind is CollectionEventKind.REFRESH or CollectionEventKind.RESET, this Array has zero length.
Constant detail
COLLECTION_CHANGEconstant
public static const COLLECTION_CHANGE:String = "collectionChange"

The CollectionEvent.COLLECTION_CHANGE constant defines the value of the type property of the event object for an event that is dispatched when a collection has changed.

The properties of the event object have the following values. Not all properties are meaningful for all kinds of events. See the detailed property descriptions for more information.

PropertyValue
bubblesfalse
cancelablefalse
currentTargetThe Object that defines the event listener that handles the event. For example, if you use myButton.addEventListener() to register an event listener, myButton is the value of the currentTarget.
itemsAn Array of objects with information about the items affected by the event. The contents of this field depend on the event kind; for details see the items property
kindThe kind of event. The valid values are defined in the CollectionEventKind class as constants.
locationLocation within the target collection of the item(s) specified in the items property.
oldLocationthe previous location in the collection of the item specified in the items property.
targetThe Object that dispatched the event; it is not always the Object listening for the event. Use the currentTarget property to always access the Object listening for the event.
typeCollectionEvent.COLLECTION_CHANGE



© 2004-2006 Adobe Systems Incorporated. All rights reserved.
Thu Jun 22 2006, 10:21 PM GMT-07:00

 

Send me an e-mail when comments are added to this page | Comment Report

Current page: http://livedocs.adobe.com/flex/2/langref/mx/events/CollectionEvent.html