| Pakket | mx.collections |
| Klasse | public class GroupingCollection |
| Overerving | GroupingCollection  HierarchicalData EventDispatcher Object |
| Implementatie | IGroupingCollection |
| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | 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>
MXML-syntaxis
MXML-syntaxis weergeven
MXML-syntaxis verbergen<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.
Standaard-MXML-eigenschapgrouping
Verwante API-elementen
| Eigenschap | Gedefinieerd door | ||
|---|---|---|---|
 | childrenField : String
Indicates the field name to be used to detect children objects in
a data item. | HierarchicalData | |
| constructor : Object
Verwijzing naar het klasseobject of de constructorfunctie van een bepaalde objectinstantie. | Object | |
| grouping : Grouping
Specifies the Grouping instance applied to the source data. | GroupingCollection | ||
| source : Object [overschrijven]
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 | ||
| Eigenschap | Gedefinieerd door | ||
|---|---|---|---|
| timer : flash.utils:Timer
The timer which is associated with an asynchronous refresh operation. | GroupingCollection | ||
| Methode | Gedefinieerd door | ||
|---|---|---|---|
Constructor. | GroupingCollection | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registreert een gebeurtenislistenerobject bij een object EventDispatcher, zodat de listener een melding van een gebeurtenis ontvangt. | 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 | |
|
Verzendt een gebeurtenis naar de gebeurtenisstroom. | EventDispatcher | |
|
Returns an Object representing the node's children. | HierarchicalData | |
|
Returns data from a node. | HierarchicalData | |
[overschrijven]
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 | |
|
Controleert of het object EventDispatcher listeners heeft geregistreerd voor een specifiek type gebeurtenis. | EventDispatcher | |
|
Geeft aan of voor een object een opgegeven eigenschap is gedefinieerd. | Object | |
|
Geeft aan of een instantie van de klasse Object zich in de prototypeketen van het object bevindt dat als parameter is opgegeven. | Object | |
|
Geeft aan of de opgegeven eigenschap bestaat en kan worden opgesomd. | Object | |
Applies the grouping to the view. | GroupingCollection | ||
|
Verwijdert een listener uit het object EventDispatcher. | EventDispatcher | |
|
Stelt de beschikbaarheid van een dynamische eigenschap voor lusbewerkingen in. | Object | |
|
Geeft de tekenreeksweergave van dit object weer, geformatteerd volgens de locatiespecifieke conventies. | Object | |
|
Retourneert een tekenreeksrepresentatie van het opgegeven object. | Object | |
|
Retourneert de primitieve waarde van het opgegeven object. | Object | |
|
Controleert of een gebeurtenislistener is geregistreerd bij dit object EventDispatcher of een van de voorouders voor het opgegeven type gebeurtenis. | EventDispatcher | |
| Methode | Gedefinieerd door | ||
|---|---|---|---|
Returns the parent of a node. | GroupingCollection | ||
grouping | eigenschap |
grouping:Grouping| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | 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.
Implementatie
public function get grouping():Grouping public function set grouping(value:Grouping):voidVerwante API-elementen
source | eigenschap |
source:Object[overschrijven] | Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | 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.
Implementatie
override public function get source():Object override public function set source(value:Object):voidsummaries | eigenschap |
public var summaries:Array| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | 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>
Verwante API-elementen
timer | eigenschap |
protected var timer:flash.utils:Timer| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | 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 | () | Constructor |
public function GroupingCollection()| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Constructor.
cancelRefresh | () | methode |
public function cancelRefresh():void| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | 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 | () | methode |
protected function getParent(node:Object):*| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Returns the parent of a node.
The parent of a top-level node is null.
Parameters
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 | () | methode |
override public function getRoot():Object| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | 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 | () | methode |
public function refresh(async:Boolean = false):Boolean| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | 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.
Parameters
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.
|
Wed Jun 13 2018, 11:42 AM Z