| Pacchetto | mx.collections |
| Classe | public class GroupingCollection |
| Ereditarietà | GroupingCollection  HierarchicalData EventDispatcher Object |
| Implementa | IGroupingCollection |
| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
To populate the AdvancedDataGrid control with grouped data,
you create an instance of the GroupingCollection class from your flat data,
and then pass that GroupingCollection instance to the data provider
of the AdvancedDataGrid control.
To specify the grouping fields of your flat data,
you pass a Grouping instance to
the GroupingCollection.grouping property.
The Grouping instance contains an Array of GroupingField instances,
one per grouping field.
The following example uses the GroupingCollection class to define two grouping fields: Region and Territory.
<mx:AdvancedDataGrid id="myADG"
<mx:dataProvider>
<mx:GroupingCollection id="gc" source="{dpFlat}">
<mx:grouping>
<mx:Grouping>
<mx:GroupingField name="Region"/>
<mx:GroupingField name="Territory"/>
</mx:Grouping>
</mx:grouping>
</mx:GroupingCollection>
</mx:dataProvider>
<mx:columns>
<mx:AdvancedDataGridColumn dataField="Region"/>
<mx:AdvancedDataGridColumn dataField="Territory"/>
<mx:AdvancedDataGridColumn dataField="Territory_Rep"/>
<mx:AdvancedDataGridColumn dataField="Actual"/>
<mx:AdvancedDataGridColumn dataField="Estimate"/>
</mx:columns>
</mx:AdvancedDataGrid>
Sintassi MXML
Mostra sintassi MXML
Nascondi sintassi MXML<mx.GroupingCollection> inherits all the tag attributes of its superclass,
and defines the following tag attributes:
<mx:GroupingCollection
Properties
grouping="No default"
source="No default"
summaries="No default"
/>
This Class has been deprecated and replaced by a new Class
GroupingCollection2 which provide faster,
improved performance and a new summary calculation mechanism.
Class SummaryField has also been deprecated and
replaced by a new Class SummaryField2.
Properties operation and summaryFunction are
not present in the Class SummaryField2.
A new property summaryOperation is introduced in
SummaryField2.
Proprietà MXML predefinitagrouping
Elementi API correlati
| Proprietà | Definito da | ||
|---|---|---|---|
 | childrenField : String
Indicates the field name to be used to detect children objects in
a data item. | HierarchicalData | |
| constructor : Object
Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto. | Object | |
| grouping : Grouping
Specifies the Grouping instance applied to the source data. | GroupingCollection | ||
| source : Object [override]
The source collection containing the flat data to be grouped. | GroupingCollection | ||
| summaries : Array
Array of SummaryRow instances that define any root-level data summaries. | GroupingCollection | ||
| Proprietà | Definito da | ||
|---|---|---|---|
| timer : flash.utils:Timer
The timer which is associated with an asynchronous refresh operation. | GroupingCollection | ||
| Metodo | Definito da | ||
|---|---|---|---|
Constructor. | GroupingCollection | ||
| 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. | EventDispatcher | |
If the refresh is performed asynchronously,
cancels the refresh operation and stops the building of the groups. | GroupingCollection | ||
|
Returns true if the node can contain children. | HierarchicalData | |
|
Invia un evento nel flusso di eventi. | EventDispatcher | |
|
Returns an Object representing the node's children. | HierarchicalData | |
|
Returns data from a node. | HierarchicalData | |
[override]
Return super.source, if the grouping property is set,
and an ICollectionView instance that refers to super.source if not. | GroupingCollection | ||
|
Returns true if the node has children. | HierarchicalData | |
|
Verifica se per l'oggetto EventDispatcher sono presenti listener registrati per un tipo specifico di evento. | EventDispatcher | |
|
Indica se per un oggetto è definita una proprietà specifica. | Object | |
|
Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro. | Object | |
|
Indica se la proprietà specificata esiste ed è enumerabile. | Object | |
Applies the grouping to the view. | GroupingCollection | ||
|
Rimuove un listener dall'oggetto EventDispatcher. | EventDispatcher | |
|
Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche. | Object | |
|
Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate. | Object | |
|
Restituisce la rappresentazione in formato stringa dell'oggetto specificato. | Object | |
|
Restituisce il valore di base dell'oggetto specificato. | Object | |
|
Verifica se un listener di eventi è registrato con questo oggetto EventDispatcher o qualsiasi suo antenato per il tipo di evento specificato. | EventDispatcher | |
| Metodo | Definito da | ||
|---|---|---|---|
Returns the parent of a node. | GroupingCollection | ||
grouping | proprietà |
grouping:Grouping| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
Specifies the Grouping instance applied to the source data.
Setting the grouping property
does not automatically refresh the view,
so you must call the refresh() method
after setting this property.
Implementazione
public function get grouping():Grouping public function set grouping(value:Grouping):voidElementi API correlati
source | proprietà |
source:Object[override] | Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
The source collection containing the flat data to be grouped. If the source is not a collection, it will be auto-wrapped into a collection.
Implementazione
override public function get source():Object override public function set source(value:Object):voidsummaries | proprietà |
public var summaries:Array| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
Array of SummaryRow instances that define any root-level data summaries. Specify one or more SummaryRow instances to define the data summaries, as the following example shows:
<mx:AdvancedDataGrid id="myADG"
width="100%" height="100%"
initialize="gc.refresh();">
<mx:dataProvider>
<mx:GroupingCollection id="gc" source="{dpFlat}">
<mx:summaries>
<mx:SummaryRow summaryPlacement="last">
<mx:fields>
<mx:SummaryField dataField="Actual"
label="Min Actual" operation="MIN"/>
<mx:SummaryField dataField="Actual"
label="Max Actual" operation="MAX"/>
</mx:fields>
</mx:SummaryRow>
</mx:summaries>
<mx:Grouping>
<mx:GroupingField name="Region"/>
<mx:GroupingField name="Territory"/>
</mx:Grouping>
</mx:GroupingCollection>
</mx:dataProvider>
<mx:columns>
<mx:AdvancedDataGridColumn dataField="Region"/>
<mx:AdvancedDataGridColumn dataField="Territory_Rep"
headerText="Territory Rep"/>
<mx:AdvancedDataGridColumn dataField="Actual"/>
<mx:AdvancedDataGridColumn dataField="Estimate"/>
<mx:AdvancedDataGridColumn dataField="Min Actual"/>
<mx:AdvancedDataGridColumn dataField="Max Actual"/>
</mx:columns>
</mx:AdvancedDataGrid>
Elementi API correlati
timer | proprietà |
protected var timer:flash.utils:Timer| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
The timer which is associated with an asynchronous refresh operation.
You can use it to change the timing interval, pause the refresh,
or perform other actions.
The default value for the delay property of the
Timer instance is 1, corresponding to 1 millisecond.
GroupingCollection | () | Funzione di costruzione |
public function GroupingCollection()| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
Constructor.
cancelRefresh | () | metodo |
public function cancelRefresh():void| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
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 argument of true, corresponding to an asynchronous refresh.
getParent | () | metodo |
protected function getParent(node:Object):*| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
Returns the parent of a node.
The parent of a top-level node is null.
Parametri
node:Object — The Object that defines the node.
|
* — The parent node containing the node as child,
null for a top-level node,
and undefined if the parent cannot be determined.
|
getRoot | () | metodo |
override public function getRoot():Object| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
Return super.source, if the grouping property is set,
and an ICollectionView instance that refers to super.source if not.
Object — The object to return.
|
refresh | () | metodo |
public function refresh(async:Boolean = false):Boolean| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
Applies the grouping to the view.
The IGroupingCollection does not detect changes to a group
automatically, so you must call the refresh()
method to update the view after setting the group property.
The refresh() method can be applied asynchronously
by calling refresh(true).
When refresh() is called synchronously,
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.
Parametri
async:Boolean (default = false)true, defines the refresh to be asynchronous.
By default it is false denoting synchronous refresh.
|
Boolean — true if the refresh() method completed,
and false if the refresh is incomplete,
which can mean that items are still pending.
|
Tue Jun 12 2018, 02:44 PM Z