DragManager - Bron voor Adobe ActionScript® 3 (AS3 Flex) API

Pakket	mx.managers
Klasse	public class DragManager
Overerving	DragManager Object

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

The DragManager class manages drag and drop operations, which let you move data from one place to another in a Flex application. For example, you can select an object, such as an item in a List control or a Flex control, such as an Image control, and then drag it over another component to add it to that component.

All methods and properties of the DragManager are static, so you do not need to create an instance of it.

All Flex components support drag and drop operations. Flex provides additional support for drag and drop to the List, Tree, and DataGrid controls.

When the user selects an item with the mouse, the selected component is called the drag initiator. The image displayed during the drag operation is called the drag proxy.

When the user moves the drag proxy over another component, the dragEnter event is sent to that component. If the component accepts the drag, it becomes the drop target and receives dragOver, dragExit, and dragDrop events.

When the drag is complete, a dragComplete event is sent to the drag initiator.

Meer voorbeelden

Dragging and dropping in sandboxed applications
Dragging and dropping in multi-versioned applications
The drag-and-drop operation

Verwante API-elementen

mx.core.DragSource
mx.events.DragEvent
mx.core.UIComponent

Openbare eigenschappen

Overerfde openbare eigenschappen verbergen

Overerfde openbare eigenschappen weergeven

	Eigenschap		Gedefinieerd door
		constructor : Object Verwijzing naar het klasseobject of de constructorfunctie van een bepaalde objectinstantie.	Object
		isDragging : Boolean [statisch] [alleen-lezen] Read-only property that returns true if a drag is in progress.	DragManager

Openbare methoden

Overerfde openbare methoden verbergen

Overerfde openbare methoden weergeven

	Methode		Gedefinieerd door
		acceptDragDrop(target:IUIComponent):void [statisch] Call this method from your dragEnter event handler if you accept the drag/drop data.	DragManager
		doDrag(dragInitiator:IUIComponent, dragSource:DragSource, mouseEvent:MouseEvent, dragImage:IFlexDisplayObject = null, xOffset:Number = 0, yOffset:Number = 0, imageAlpha:Number = 0.5, allowMove:Boolean = true):void [statisch] Initiates a drag and drop operation.	DragManager
		getFeedback():String [statisch] Returns the current drag and drop feedback.	DragManager
		hasOwnProperty(name:String):Boolean Geeft aan of voor een object een opgegeven eigenschap is gedefinieerd.	Object
		isPrototypeOf(theClass:Object):Boolean Geeft aan of een instantie van de klasse Object zich in de prototypeketen van het object bevindt dat als parameter is opgegeven.	Object
		propertyIsEnumerable(name:String):Boolean Geeft aan of de opgegeven eigenschap bestaat en kan worden opgesomd.	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Stelt de beschikbaarheid van een dynamische eigenschap voor lusbewerkingen in.	Object
		showFeedback(feedback:String):void [statisch] Sets the feedback indicator for the drag and drop operation.	DragManager
		toLocaleString():String Geeft de tekenreeksweergave van dit object weer, geformatteerd volgens de locatiespecifieke conventies.	Object
		toString():String Retourneert een tekenreeksrepresentatie van het opgegeven object.	Object
		valueOf():Object Retourneert de primitieve waarde van het opgegeven object.	Object

Stijlen

Stijlen zijn of algemeen of ze zijn gekoppeld aan een bepaald thema. Als de stijl algemeen is, kan deze bij elk thema worden gebruikt. Als een stijl is gekoppeld aan een bepaald thema, kan de stijl alleen worden gebruikt als uw toepassing het desbetreffende thema gebruikt.

Algemene stijlen

Klik voor meer informatie over stijlen.

	Beschrijving	Gedefinieerd door
copyCursor	Type: Class CSS-overerving: Nee Taalversie: ActionScript 3.0 Productversie: Flex 3 Runtimeversies: Flash9, AIR 1.1 Cursor displayed during a copy operation. The default value is the "mx.skins.cursor.DragCopy" symbol in the Assets.swf file.	DragManager
defaultDragImageSkin	Type: Class CSS-overerving: Nee Taalversie: ActionScript 3.0 Productversie: Flex 3 Runtimeversies: Flash9, AIR 1.1 Skin used to draw the default drag image, which is also called the drag proxy. De standaardwaarde is `mx.skins.halo.DefaultDragImage (for both Halo and Spark themes)`.	DragManager
linkCursor	Type: Class CSS-overerving: Nee Taalversie: ActionScript 3.0 Productversie: Flex 3 Runtimeversies: Flash9, AIR 1.1 Cursor displayed during a link operation. The default value is the "mx.skins.cursor.DragLink" symbol in the Assets.swf file.	DragManager
moveCursor	Type: Class CSS-overerving: Nee Taalversie: ActionScript 3.0 Productversie: Flex 3 Runtimeversies: Flash9, AIR 1.1 Cursor displayed during a move operation. The default value is the "mx.skins.cursor.DragMove" symbol in the Assets.swf file.	DragManager
rejectCursor	Type: Class CSS-overerving: Nee Taalversie: ActionScript 3.0 Productversie: Flex 3 Runtimeversies: Flash9, AIR 1.1 Cursor displayed for a reject operation. The default value is the "mx.skins.cursor.DragReject" symbol in the Assets.swf file.	DragManager

Openbare constanten

	Constante		Gedefinieerd door
		COPY : String = "copy" [statisch] Constant that specifies that the type of drag action is "copy".	DragManager
		LINK : String = "link" [statisch] Constant that specifies that the type of drag action is "link".	DragManager
		MOVE : String = "move" [statisch] Constant that specifies that the type of drag action is "move".	DragManager
		NONE : String = "none" [statisch] Constant that specifies that the type of drag action is "none".	DragManager

Eigenschapdetails

isDragging

eigenschap

isDragging:Boolean [alleen-lezen]

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Read-only property that returns true if a drag is in progress.

Implementatie
public static function get isDragging():Boolean

Methodedetails

acceptDragDrop

()

methode

public static function acceptDragDrop(target:IUIComponent):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Call this method from your dragEnter event handler if you accept the drag/drop data. Typically, you cast event.target to the data type of the drop target. In the following example, the drop target is an MX Canvas container:

DragManager.acceptDragDrop(Canvas(event.target));

Parameters

target:IUIComponent — The drop target accepting the drag.

doDrag

()

methode

 public static function doDrag(dragInitiator:IUIComponent, dragSource:DragSource, mouseEvent:MouseEvent, dragImage:IFlexDisplayObject = null, xOffset:Number = 0, yOffset:Number = 0, imageAlpha:Number = 0.5, allowMove:Boolean = true):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Initiates a drag and drop operation.

Parameters

	`dragInitiator:IUIComponent` — IUIComponent that specifies the component initiating the drag.

	`dragSource:DragSource` — DragSource object that contains the data being dragged.

	`mouseEvent:MouseEvent` — The MouseEvent that contains the mouse information for the start of the drag.

	`dragImage:IFlexDisplayObject` (default = `null`) — The image to drag. This argument is optional. If omitted, a standard drag rectangle is used during the drag and drop operation. If you specify an image, you must explicitly set a height and width of the image or else it will not appear.

	`xOffset:Number` (default = `0`) — Number that specifies the x offset, in pixels, for the `dragImage`. This argument is optional. If omitted, the drag proxy is shown at the upper-left corner of the drag initiator. The offset is expressed in pixels from the left edge of the drag proxy to the left edge of the drag initiator, and is usually a negative number.

	`yOffset:Number` (default = `0`) — Number that specifies the y offset, in pixels, for the `dragImage`. This argument is optional. If omitted, the drag proxy is shown at the upper-left corner of the drag initiator. The offset is expressed in pixels from the top edge of the drag proxy to the top edge of the drag initiator, and is usually a negative number.

	`imageAlpha:Number` (default = `0.5`) — Number that specifies the alpha value used for the drag image. This argument is optional. If omitted, the default alpha value is 0.5. A value of 0.0 indicates that the image is transparent; a value of 1.0 indicates it is fully opaque.

	`allowMove:Boolean` (default = `true`) — Indicates if a drop target is allowed to move the dragged data.

getFeedback

()

methode

public static function getFeedback():String

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Returns the current drag and drop feedback.

Geretourneerde waarde

String — Possible return values are DragManager.COPY, DragManager.MOVE, DragManager.LINK, or DragManager.NONE.

showFeedback

()

methode

public static function showFeedback(feedback:String):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Sets the feedback indicator for the drag and drop operation. Possible values are DragManager.COPY, DragManager.MOVE, DragManager.LINK, or DragManager.NONE.

Parameters

feedback:String — The type of feedback indicator to display.

Constantedetails

COPY

Constante

public static const COPY:String = "copy"

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Constant that specifies that the type of drag action is "copy".

LINK

Constante

public static const LINK:String = "link"

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Constant that specifies that the type of drag action is "link".

MOVE

Constante

public static const MOVE:String = "move"

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Constant that specifies that the type of drag action is "move".

NONE

Constante

public static const NONE:String = "none"

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Constant that specifies that the type of drag action is "none".

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DragManager - AS3 Flex

Klassen x

isDragging

acceptDragDrop

doDrag

getFeedback

showFeedback

COPY

LINK

MOVE

NONE