SetEventHandler

Paquete	mx.states
Clase	public class SetEventHandler
Herencia	SetEventHandler OverrideBase OnDemandEventDispatcher Object

Versión del lenguaje:

ActionScript 3.0

Versión de producto:

Flex 3

Versiones de motor de ejecución:

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.

Sintaxis MXML expanded

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

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

Elementos de API relacionados

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

Propiedades públicas

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	Propiedad		Definido por
		constructor : Object Una referencia a la clase de objeto o función constructora para una instancia de objeto determinada.	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

Métodos públicos

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	Método		Definido por
		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 [override] 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 Indica si un objeto tiene definida una propiedad especificada.	Object
		initialize():void IOverride interface method; this class implements it as an empty method.	OverrideBase
		isPrototypeOf(theClass:Object):Boolean Indica si hay una instancia de la clase Object en la cadena de prototipo del objeto especificado como parámetro.	Object
		propertyIsEnumerable(name:String):Boolean Indica si existe la propiedad especificada y si es enumerable.	Object
		remove(parent:UIComponent):void [override] 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 Establece la disponibilidad de una propiedad dinámica para operaciones de bucle.	Object
		toLocaleString():String Devuelve la representación de cadena de este objeto, con formato según las convenciones específicas de configuración regional.	Object
		toString():String Devuelve la representación de cadena del objeto especificado.	Object
		valueOf():Object Devuelve el valor simple del objeto especificado.	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

Eventos

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	Evento		Resumen	Definido por
		handler	The event handler function to execute in response to the event that is specified by the name property.	SetEventHandler

Información sobre propiedades

handlerFunction

propiedad

public var handlerFunction:Function

Versión del lenguaje:

ActionScript 3.0

Versión de producto:

Flex 3

Versiones de motor de ejecución:

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.

El valor predeterminado es null.

name

propiedad

public var name:String

Versión del lenguaje:

ActionScript 3.0

Versión de producto:

Flex 3

Versiones de motor de ejecución:

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

propiedad

public var originalHandlerFunction:Function

Versión del lenguaje:

ActionScript 3.0

Versión de producto:

Flex 4.5

Versiones de motor de ejecución:

Flash Player 9, AIR 1.1

The handler function to remove prior to applying our override.

El valor predeterminado es null.

target

propiedad

public var target:Object

Versión del lenguaje:

ActionScript 3.0

Versión de producto:

Flex 3

Versiones de motor de ejecución:

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.

El valor predeterminado es null.

Información sobre constructores

()

Información sobre

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

Versión del lenguaje:

ActionScript 3.0

Versión de producto:

Flex 3

Versiones de motor de ejecución:

Flash Player 9, AIR 1.1

Constructor.

Parámetros

	`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.

Información sobre métodos

apply

()

método

override public function apply(parent:UIComponent):void

Versión del lenguaje:

ActionScript 3.0

Versión de producto:

Flex 3

Versiones de motor de ejecución:

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.

Parámetros

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

()

método

override public function remove(parent:UIComponent):void

Versión del lenguaje:

ActionScript 3.0

Versión de producto:

Flex 3

Versiones de motor de ejecución:

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.

Parámetros

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.

Información sobre eventos

handler

Evento

Tipo de objeto de evento: Object

Versión del lenguaje:

ActionScript 3.0

Versión de producto:

Flex 3

Versiones de motor de ejecución:

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.

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SetEventHandler - AS3 Flex

Clases x

handlerFunction

name

originalHandlerFunction

target