SetEventHandler

Paket	mx.states
Klass	public class SetEventHandler
Arv	SetEventHandler OverrideBase OnDemandEventDispatcher Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

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-syntax expanded

Dölj MXML-syntax

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

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

Relaterade API-element

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

Publika egenskaper

Dölj ärvda publika egenskaper

Visa ärvda publika egenskaper

	Egenskap		Definieras med
		constructor : Object En referens till klassobjektet eller konstruktorfunktionen för en given objektinstans.	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

Publika metoder

Dölj ärvda publika metoder

Visa ärvda publika metoder

	Metod		Definieras med
		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 [åsidosätt] 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 Anger om det finns en egenskap angiven för ett objekt.	Object
		initialize():void IOverride interface method; this class implements it as an empty method.	OverrideBase
		isPrototypeOf(theClass:Object):Boolean Anger om en instans av klassen Object finns i prototypkedjan för objektet som anges som parameter.	Object
		propertyIsEnumerable(name:String):Boolean Anger om den angivna egenskapen finns och är uppräkningsbar.	Object
		remove(parent:UIComponent):void [åsidosätt] 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 Anger tillgänglighet för en dynamisk egenskap för slingåtgärder.	Object
		toLocaleString():String Returnerar det här objektets strängrepresentation, formaterad i enlighet med språkspecifika konventioner.	Object
		toString():String Returnerar det angivna objektets strängbeteckning.	Object
		valueOf():Object Returnerar det angivna objektets primitiva värde.	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

Händelser

Klicka för mer information om händelser

	Händelse		Sammanfattning	Definieras med
		handler	The event handler function to execute in response to the event that is specified by the name property.	SetEventHandler

Egenskapsdetaljer

handlerFunction

egenskap

public var handlerFunction:Function

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

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.

Standardvärdet är null.

name

egenskap

public var name:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

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

egenskap

public var originalHandlerFunction:Function

Språkversion:

ActionScript 3.0

Produktversion:

Flex 4.5

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

The handler function to remove prior to applying our override.

Standardvärdet är null.

target

egenskap

public var target:Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

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.

Standardvärdet är null.

Konstruktordetaljer

()

Konstruktor

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

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Constructor.

Parametrar

	`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.

Metoddetaljer

apply

()

metod

override public function apply(parent:UIComponent):void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

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.

Parametrar

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

()

metod

override public function remove(parent:UIComponent):void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

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.

Parametrar

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.

Händelsedetaljer

handler

Händelse

Typ av händelseobjekt: Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

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.

Juridiska meddelanden | Onlinesekretesspolicy

SetEventHandler - AS3 Flex

Klasser x

handlerFunction

name

originalHandlerFunction

target