| 套件 | mx.collections |
| 類別 | public class GroupingCollection |
| 繼承 | GroupingCollection  HierarchicalData EventDispatcher Object |
| 實作 | IGroupingCollection |
| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | 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 語法
顯示 MXML 語法
隱藏 MXML 語法<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.
預設 MXML 屬性grouping
相關 API 元素
| 屬性 | 定義自 | ||
|---|---|---|---|
 | childrenField : String
Indicates the field name to be used to detect children objects in
a data item. | HierarchicalData | |
| constructor : Object
類別物件的參照或是特定物件實體的建構函數。 | Object | |
| grouping : Grouping
Specifies the Grouping instance applied to the source data. | GroupingCollection | ||
| source : Object [覆寫]
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 | ||
| 屬性 | 定義自 | ||
|---|---|---|---|
| timer : flash.utils:Timer
The timer which is associated with an asynchronous refresh operation. | GroupingCollection | ||
| 方法 | 定義自 | ||
|---|---|---|---|
Constructor. | GroupingCollection | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
會在 EventDispatcher 物件註冊事件偵聽程式，以便讓偵聽程式收到事件的通知。 | 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 | |
|
會將事件傳送到事件流程。 | EventDispatcher | |
|
Returns an Object representing the node's children. | HierarchicalData | |
|
Returns data from a node. | HierarchicalData | |
[覆寫]
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 | |
|
會檢查 EventDispatcher 物件是否有對特定的事件類型註冊偵聽程式。 | EventDispatcher | |
|
指出物件是否有已定義的指定屬性。 | Object | |
|
指出 Object 類別的實體是否位於指定為參數的物件原型鏈中。 | Object | |
|
指出指定的屬性是否存在，以及是否可列舉。 | Object | |
Applies the grouping to the view. | GroupingCollection | ||
|
會從 EventDispatcher 物件移除偵聽程式。 | EventDispatcher | |
|
為迴圈作業設定動態屬性的可用性。 | Object | |
|
傳回代表此物件的字串，根據地區特定慣例進行格式化。 | Object | |
|
會傳回指定之物件的字串形式。 | Object | |
|
會傳回指定之物件的基本值。 | Object | |
|
檢查此 EventDispatcher 物件是否已註冊事件偵聽程式，或者此物件的任何祖系已為特定事件類型註冊事件偵聽程式。 | EventDispatcher | |
grouping | 屬性 |
grouping:Grouping| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | 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.
實作
public function get grouping():Grouping public function set grouping(value:Grouping):void相關 API 元素
source | 屬性 |
source:Object[覆寫] | 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | 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.
實作
override public function get source():Object override public function set source(value:Object):voidsummaries | 屬性 |
public var summaries:Array| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | 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>
相關 API 元素
timer | 屬性 |
protected var timer:flash.utils:Timer| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | 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 | () | 建構函式 |
public function GroupingCollection()| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Constructor.
cancelRefresh | () | 方法 |
public function cancelRefresh():void| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | 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 | () | 方法 |
protected function getParent(node:Object):*| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
Returns the parent of a node.
The parent of a top-level node is null.
參數
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 | () | 方法 |
refresh | () | 方法 |
public function refresh(async:Boolean = false):Boolean| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 3 |
| 執行階段版本: | 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.
參數
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, 03:47 PM Z