SetEventHandler

Pakket	mx.states
Klasse	public class SetEventHandler
Overerving	SetEventHandler OverrideBase OnDemandEventDispatcher Object

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

The SetEventHandler class specifies an event handler that is active only during a particular view state. For example, you might define a Button control that uses one event handler in the base view state, but uses a different event handler when you change view state.

You use this class in the overrides property of the State class.

MXML-syntaxis expanded

MXML-syntaxis verbergen

The <mx:SetEventHanlder> tag has the following attributes:

  <mx:SetEventHandler
  Properties
  name="null"
  handlerFunction="null"
  target="null"
  
  Events
  handler=No default
  />

Verwante API-elementen

mx.states.State
mx.states.SetProperty
mx.states.SetStyle

Openbare eigenschappen

Overerfde openbare eigenschappen verbergen

Overerfde openbare eigenschappen weergeven

	Eigenschap		Gedefinieerd door
		constructor : Object Verwijzing naar het klasseobject of de constructorfunctie van een bepaalde objectinstantie.	Object
		handlerFunction : Function The handler function for the event.	SetEventHandler
		name : String The name of the event whose handler is being set.	SetEventHandler
		originalHandlerFunction : Function The handler function to remove prior to applying our override.	SetEventHandler
		target : Object The component that dispatches the event.	SetEventHandler

Openbare methoden

Overerfde openbare methoden verbergen

Overerfde openbare methoden weergeven

	Methode		Gedefinieerd door
		SetEventHandler(target:EventDispatcher = null, name:String = null) Constructor.	SetEventHandler
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registers an event listener object with an EventDispatcher object so that the listener receives notification of an event.	OnDemandEventDispatcher
		apply(parent:UIComponent):void [overschrijven] Applies the override.	SetEventHandler
		dispatchEvent(event:Event):Boolean Dispatches an event into the event flow.	OnDemandEventDispatcher
		hasEventListener(type:String):Boolean Checks whether the EventDispatcher object has any listeners registered for a specific type of event.	OnDemandEventDispatcher
		hasOwnProperty(name:String):Boolean Geeft aan of voor een object een opgegeven eigenschap is gedefinieerd.	Object
		initialize():void IOverride interface method; this class implements it as an empty method.	OverrideBase
		isPrototypeOf(theClass:Object):Boolean Geeft aan of een instantie van de klasse Object zich in de prototypeketen van het object bevindt dat als parameter is opgegeven.	Object
		propertyIsEnumerable(name:String):Boolean Geeft aan of de opgegeven eigenschap bestaat en kan worden opgesomd.	Object
		remove(parent:UIComponent):void [overschrijven] Removes the override.	SetEventHandler
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Removes a listener from the EventDispatcher object.	OnDemandEventDispatcher
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Stelt de beschikbaarheid van een dynamische eigenschap voor lusbewerkingen in.	Object
		toLocaleString():String Geeft de tekenreeksweergave van dit object weer, geformatteerd volgens de locatiespecifieke conventies.	Object
		toString():String Retourneert een tekenreeksrepresentatie van het opgegeven object.	Object
		valueOf():Object Retourneert de primitieve waarde van het opgegeven object.	Object
		willTrigger(type:String):Boolean Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.	OnDemandEventDispatcher

Gebeurtenissen

Klik voor meer informatie over gebeurtenissen.

	Gebeurtenis		Overzicht	Gedefinieerd door
		handler	The event handler function to execute in response to the event that is specified by the name property.	SetEventHandler

Eigenschapdetails

handlerFunction

eigenschap

public var handlerFunction:Function

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

The handler function for the event. This property is intended for developers who use ActionScript to create and access view states. In MXML, you can use the equivalent handler event attribute; do not use both in a single MXML tag.

De standaardwaarde is null.

name

eigenschap

public var name:String

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

The name of the event whose handler is being set. You must set this property, either in the SetEventHandler constructor or by setting the property value directly.

originalHandlerFunction

eigenschap

public var originalHandlerFunction:Function

Taalversie:

ActionScript 3.0

Productversie:

Flex 4.5

Runtimeversies:

Flash Player 9, AIR 1.1

The handler function to remove prior to applying our override.

De standaardwaarde is null.

target

eigenschap

public var target:Object

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

The component that dispatches the event. If the property value is null, Flex uses the immediate parent of the <mx:states> tag.

De standaardwaarde is null.

Constructordetails

()

Constructor

public function SetEventHandler(target:EventDispatcher = null, name:String = null)

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Constructor.

Parameters

	`target:EventDispatcher` (default = `null`) — The object that dispatches the event to be handled. By default, Flex uses the immediate parent of the State object.

	`name:String` (default = `null`) — The event type for which to set the handler.

Methodedetails

apply

()

methode

override public function apply(parent:UIComponent):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Applies the override. Flex retains the original value, so that it can restore the value later in the remove() method.

This method is called automatically when the state is entered. It should not be called directly.

Parameters

parent:UIComponent — The parent of the state object containing this override. The override should use this as its target if an explicit target was not specified.

remove

()

methode

override public function remove(parent:UIComponent):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Removes the override. The value remembered in the apply() method is restored.

This method is called automatically when the state is entered. It should not be called directly.

Parameters

parent:UIComponent — The parent of the state object containing this override. The override should use this as its target if an explicit target was not specified.

Gebeurtenisdetails

handler

Gebeurtenis

Type gebeurtenisobject: Object

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

The event handler function to execute in response to the event that is specified by the name property.

Do not specify the handler property and the handlerFunction property in a single <mx:SetEventHandler> tag.

Flex does not dispatch a handler event. You use the handler key word only as an MXML attribte. When you use the handler handler attribute, you can specify a method that takes multiple parameters, not just the Event object; also, you can specify the handler code in-line in the MXML tag.

Juridische kennisgeving | Online privacybeleid

SetEventHandler - AS3 Flex

Klassen x

handlerFunction

name

originalHandlerFunction

target