Referencia de ActionScript® 3.0 para la plataforma de Adobe® Flash®
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com.adobe.solutions.exm
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fl.accessibility
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flash.ui
flash.utils
flash.xml
flashx.textLayout
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flashx.textLayout.container
flashx.textLayout.conversion
flashx.textLayout.edit
flashx.textLayout.elements
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lc.procmgmt.ui.help
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mx.accessibility
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mx.charts.series
mx.charts.series.items
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mx.collections.errors
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mx.controls
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mx.data
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mx.logging
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mx.messaging.events
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mx.modules
mx.netmon
mx.olap
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mx.preloaders
mx.printing
mx.resources
mx.rpc
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mx.rpc.http
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mx.rpc.livecycle
mx.rpc.mxml
mx.rpc.remoting
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mx.rpc.soap
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org.osmf.containers
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xd.core.axm.enterprise.view.components
xd.core.axm.enterprise.view.skins
xd.core.axm.view.components
xd.core.axm.view.components.support

Elementos del lenguaje

Constantes globales
Funciones globales
Operadores
Sentencias, palabras clave y directivas
Tipos especiales

Apéndices

Novedades
Errores del compilador
Advertencias del compilador
Errores en tiempo de ejecución
Migración a ActionScript 3
Conjuntos de caracteres admitidos
Solo etiquetas MXML
Elementos Motion XML
Etiquetas de texto temporizado
Lista de elementos desfasados
Constantes de implementación de accesibilidad
Cómo utilizar ejemplos de ActionScript
Avisos legales
Paquetemx.collections
Interfazpublic interface ICollectionView extends IEventDispatcher
Implementadores ListCollectionView

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

An ICollectionView is a view onto a collection of data. The view can be modified to show the data sorted according to various criteria or reduced by filters without modifying the underlying data. An IViewCursor provides to access items within a collection. You can modify the collection by using the IViewCursor interface insert() and remove() methods.

An ICollectionView may be a view onto data that has been retrieved from a remote location. When Implementing this interface for data that may be remote it is important to handle the case where data may not yet be available, which is indicated by the ItemPendingError.

The IList interface is an alternative to the ICollectionView interface.

Elementos de API relacionados



Propiedades públicas
 PropiedadDefinido por
  filterFunction : Function
A function that the view will use to eliminate items that do not match the function's criteria.
ICollectionView
  length : int
[solo lectura] The number of items in this view.
ICollectionView
  sort : ISort
The ISort that will be applied to the ICollectionView.
ICollectionView
Métodos públicos
 MétodoDefinido por
 Inherited
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registra un objeto de detector de eventos con un objeto EventDispatcher, de modo que el detector reciba la notificación de un evento.
IEventDispatcher
  
Returns whether the view contains the specified object.
ICollectionView
  
Creates a new IViewCursor that works with this view.
ICollectionView
  
Prevents changes to the collection itself and items within the collection from being dispatched by the view.
ICollectionView
 Inherited
Distribuye un evento en el flujo del evento.
IEventDispatcher
  
Enables auto-updating.
ICollectionView
 Inherited
Comprueba si el objeto EventDispatcher tiene detectores registrados para un tipo concreto de evento.
IEventDispatcher
  
itemUpdated(item:Object, property:Object = null, oldValue:Object = null, newValue:Object = null):void
Notifies the view that an item has been updated.
ICollectionView
  
Applies the sort and filter to the view.
ICollectionView
 Inherited
removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void
Elimina un detector del objeto EventDispatcher.
IEventDispatcher
 Inherited
Comprueba si hay registrado un detector de eventos con este objeto EventDispatcher o con cualquiera de sus ascendientes para el tipo de evento concreto.
IEventDispatcher
Eventos
 Evento Resumen Definido por
  Dispatched when the ICollectionView has been updated in some way.ICollectionView
Información sobre propiedades

filterFunction

propiedad
filterFunction:Function

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

A function that the view will use to eliminate items that do not match the function's criteria. A filterFunction is expected to have the following signature:

f(item:Object):Boolean
where the return value is true if the specified item should remain in the view.

If a filter is unsupported, Flex throws an error when accessing this property. You must call refresh() after setting the filterFunction property for the view to update.

Note: The Flex implementations of ICollectionView retrieve all items from a remote location before executing the filter function. If you use paging, apply the filter to the remote collection before you retrieve the data.



Implementación
    public function get filterFunction():Function
    public function set filterFunction(value:Function):void

Elementos de API relacionados

length

propiedad 
length:int  [solo lectura]

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

The number of items in this view. 0 means no items, while -1 means that the length is unknown.



Implementación
    public function get length():int

sort

propiedad 
sort:ISort

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

The ISort that will be applied to the ICollectionView. Setting the sort does not automatically refresh the view, so you must call the refresh() method after setting this property. If sort is unsupported an error will be thrown when accessing this property.

Note: The Flex implementations of ICollectionView retrieve all items from a remote location before executing a sort. If you use paging with a sorted list, apply the sort to the remote collection before you retrieve the data.



Implementación
    public function get sort():ISort
    public function set sort(value:ISort):void

Elementos de API relacionados

Información sobre métodos

contains

()método
public function contains(item:Object):Boolean

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

Returns whether the view contains the specified object. Unlike the IViewCursor.findxxx methods, this search is succesful only if it finds an item that exactly matches the parameter. If the view has a filter applied to it this method may return false even if the underlying collection does contain the item.

Parámetros

item:Object — The object to look for.

Valor devuelto
Boolean — true if the ICollectionView, after applying any filter, contains the item; false otherwise.

createCursor

()método 
public function createCursor():IViewCursor

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

Creates a new IViewCursor that works with this view.

Valor devuelto
IViewCursor — A new IViewCursor implementation.

disableAutoUpdate

()método 
public function disableAutoUpdate():void

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

Prevents changes to the collection itself and items within the collection from being dispatched by the view. Also prevents the view from updating the positions of items if the positions change in the collection. The changes will be queued and dispatched appropriately after enableAutoUpdate is called. If more events than updates to a single item occur, the view may end up resetting. The disableAutoUpdate method acts cumulatively; the same number of calls to enableAutoUpdate are required for the view to dispatch events and refresh. Note that disableAutoUpdate only affects the individual view; edits may be detected on an individual basis by other views.

enableAutoUpdate

()método 
public function enableAutoUpdate():void

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

Enables auto-updating. See disableAutoUpdate for more information.

Elementos de API relacionados

itemUpdated

()método 
public function itemUpdated(item:Object, property:Object = null, oldValue:Object = null, newValue:Object = null):void

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

Notifies the view that an item has been updated. This method is useful if the contents of the view do not implement IPropertyChangeNotifier. If the call to this method includes a property parameter, the view may be able to optimize its notification mechanism. Otherwise it may choose to simply refresh the whole view.

Parámetros

item:Object — The item within the view that was updated.
 
property:Object (default = null) — The name of the property that was updated.
 
oldValue:Object (default = null) — The old value of that property. (If property was null, this can be the old value of the item.).
 
newValue:Object (default = null) — The new value of that property. (If property was null, there's no need to specify this as the item is assumed to be the new value.)

Elementos de API relacionados

refresh

()método 
public function refresh():Boolean

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

Applies the sort and filter to the view. The ICollectionView does not detect changes to a sort or filter automatically, so you must call the refresh() method to update the view after setting the sort or filterFunction property. If your ICollectionView implementation also implements the IMXMLObject interface, you should to call the refresh() method from your initialized() method.

Returns true if the refresh was successful and false if the sort is not yet complete (e.g., items are still pending). A client of the view should wait for a CollectionEvent event with the CollectionEventKind.REFRESH kind property to ensure that the refresh() operation is complete.

Valor devuelto
Booleantrue if the refresh() was complete, false if the refresh() is incomplete.
Información sobre eventos

collectionChange

Evento
Tipo de objeto de evento: mx.events.CollectionEvent
propiedad CollectionEvent.type = mx.events.CollectionEvent.COLLECTION_CHANGE

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

Dispatched when the ICollectionView has been updated in some way.

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




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