| Pacchetto | mx.collections |
| Interfaccia | public interface IGroupingCollection2 extends IHierarchicalData , IEventDispatcher |
| Implementatori | GroupingCollection2 |
| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Elementi API correlati
| Proprietà | Definito da | ||
|---|---|---|---|
| grouping : Grouping
The Grouping object applied to the source data. | IGroupingCollection2 | ||
Nascondi metodi pubblici ereditati
Mostra metodi pubblici ereditati| Metodo | Definito da | ||
|---|---|---|---|
 | addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registra un oggetto listener di eventi con un oggetto EventDispatcher, in modo che il listener riceva la notifica di un evento. | IEventDispatcher | |
If the refresh is performed asynchronously,
cancels the refresh operation and stops the building of the groups. | IGroupingCollection2 | ||
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Returns true if the node can contain children. | IHierarchicalData | |
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Invia un evento nel flusso di eventi. | IEventDispatcher | |
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Returns an Object representing the node's children. | IHierarchicalData | |
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Returns data from a node. | IHierarchicalData | |
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Returns the root data item. | IHierarchicalData | |
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Returns true if the node has children. | IHierarchicalData | |
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Verifica se per l'oggetto EventDispatcher sono presenti listener registrati per un tipo specifico di evento. | IEventDispatcher | |
Applies the grouping to the collection. | IGroupingCollection2 | ||
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Rimuove un listener dall'oggetto EventDispatcher. | IEventDispatcher | |
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Verifica se un listener di eventi è registrato con questo oggetto EventDispatcher o qualsiasi suo antenato per il tipo di evento specificato. | IEventDispatcher | |
grouping | proprietà |
grouping:Grouping| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The Grouping object applied to the source data.
Setting this property does not automatically refresh the view;
therefore, you must call the refresh() method
after setting this property.
Note: The Flex implementations of IGroupingCollection2 retrieve all items from a remote location before executing grouping.
Implementazione
public function get grouping():Grouping public function set grouping(value:Grouping):voidcancelRefresh | () | metodo |
public function cancelRefresh():void| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
If the refresh is performed asynchronously,
cancels the refresh operation and stops the building of the groups.
This method only cancels the refresh
if it is initiated by a call to the refresh() method
with an asynch argument of true, corresponding to an asynchronous refresh.
refresh | () | metodo |
public function refresh(async:Boolean = false, dispatchCollectionEvents:Boolean = false):Boolean| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Applies the grouping to the collection.
The collection does not detect changes to a group
automatically, so you must call the refresh()
method to update the collection after setting the grouping,
source, or summaries properties.
You also call the refresh() method when you modify
a GroupingField of the collection, such as by changing the
caseInsensitive, compareFunction,
or groupingFunction properties.
The refresh() method can be applied synchronously
or asynchronously.
When refresh() is called synchronously,
all groups and summaries are updated together before the method returns.
That means your application cannot perform other processing operations
for the duration of the call.
A client should wait for a CollectionEvent event
with the value of the kind property set
to CollectionEventKind.REFRESH
to ensure that the refresh() method completed.
In asynchronous refresh, all groups and summaries are updated individually.
The refresh() method returns before the groups and summaries
are updated so that your application can continue execution.
Also, the control is updated during the refresh so that the
user can continue to interact with it.
The overhead of updating groups and summaries individually, rather than all at once, makes an asynchronous refresh take longer than a synchronous one. However, for large data sets, your application continues to operate during the refresh.
Parametri
async:Boolean (default = false)true, defines the refresh to be asynchronous.
By default it is false denoting synchronous refresh.
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dispatchCollectionEvents:Boolean (default = false)true, events are
dispatched when groups are formed.
For better performance, set it to false.
If true, then events are dispatched as groups and summaries are calculated
synchronously to update the control.
Note: If async is true,
the dispatchCollectionEvents is always set to true.
By default it is false denoting no events will be dispatched.
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Boolean — true if the refresh() method completed,
and false if the refresh is incomplete,
which can mean that items are still pending.
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Tue Jun 12 2018, 02:44 PM Z