Referencia de ActionScript® 3.0 para la plataforma de Adobe® Flash®
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DragManager  - AS3 Flex

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Operadores
Sentencias, palabras clave y directivas
Tipos especiales

Apéndices

Novedades
Errores del compilador
Advertencias del compilador
Errores en tiempo de ejecución
Migración a ActionScript 3
Conjuntos de caracteres admitidos
Solo etiquetas MXML
Elementos Motion XML
Etiquetas de texto temporizado
Lista de elementos desfasados
Constantes de implementación de accesibilidad
Cómo utilizar ejemplos de ActionScript
Avisos legales
Paquetemx.managers
Clasepublic class DragManager
HerenciaDragManager Inheritance Object

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: 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.

Más ejemplos

Elementos de API relacionados



Propiedades públicas
 PropiedadDefinido por
 Inheritedconstructor : Object
Una referencia a la clase de objeto o función constructora para una instancia de objeto determinada.
Object
  isDragging : Boolean
[estática] [solo lectura] Read-only property that returns true if a drag is in progress.
DragManager
Métodos públicos
 MétodoDefinido por
  
[estática] 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
[estática] Initiates a drag and drop operation.
DragManager
  
[estática] Returns the current drag and drop feedback.
DragManager
 Inherited
Indica si un objeto tiene definida una propiedad especificada.
Object
 Inherited
Indica si hay una instancia de la clase Object en la cadena de prototipo del objeto especificado como parámetro.
Object
 Inherited
Indica si existe la propiedad especificada y si es enumerable.
Object
 Inherited
Establece la disponibilidad de una propiedad dinámica para operaciones de bucle.
Object
  
[estática] Sets the feedback indicator for the drag and drop operation.
DragManager
 Inherited
Devuelve la representación de cadena de este objeto, con formato según las convenciones específicas de configuración regional.
Object
 Inherited
Devuelve la representación de cadena del objeto especificado.
Object
 Inherited
Devuelve el valor simple del objeto especificado.
Object
Estilos

Los estilos son comunes o están asociados a un tema específico. Si el estilo es común, se puede utilizar con cualquier tema. Si un estilo está asociado a un tema específico, solo se puede utilizar si la aplicación usa dicho tema.

Estilos comunes
 Estilo Descripción Definido por
  
copyCursor
Tipo: Class Herencia CSS: No incluir
Versión del lenguaje: ActionScript 3.0  Versión de producto: Flex 3  Versiones de motor de ejecución: 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
Tipo: Class Herencia CSS: No incluir
Versión del lenguaje: ActionScript 3.0  Versión de producto: Flex 3  Versiones de motor de ejecución: Flash9, AIR 1.1

Skin used to draw the default drag image, which is also called the drag proxy. El valor predeterminado es mx.skins.halo.DefaultDragImage (for both Halo and Spark themes).
DragManager
  
linkCursor
Tipo: Class Herencia CSS: No incluir
Versión del lenguaje: ActionScript 3.0  Versión de producto: Flex 3  Versiones de motor de ejecución: 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
Tipo: Class Herencia CSS: No incluir
Versión del lenguaje: ActionScript 3.0  Versión de producto: Flex 3  Versiones de motor de ejecución: 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
Tipo: Class Herencia CSS: No incluir
Versión del lenguaje: ActionScript 3.0  Versión de producto: Flex 3  Versiones de motor de ejecución: 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
Constantes públicas
 ConstanteDefinido por
  COPY : String = "copy"
[estática] Constant that specifies that the type of drag action is "copy".
DragManager
  LINK : String = "link"
[estática] Constant that specifies that the type of drag action is "link".
DragManager
  MOVE : String = "move"
[estática] Constant that specifies that the type of drag action is "move".
DragManager
  NONE : String = "none"
[estática] Constant that specifies that the type of drag action is "none".
DragManager
Información sobre propiedades

isDragging

propiedad
isDragging:Boolean  [solo lectura]

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

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



Implementación
    public static function get isDragging():Boolean
Información sobre métodos

acceptDragDrop

()método
public static function acceptDragDrop(target:IUIComponent):void

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: 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));

Parámetros

target:IUIComponent — The drop target accepting the drag.

doDrag

()método 
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

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

Initiates a drag and drop operation.

Parámetros

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

()método 
public static function getFeedback():String

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

Returns the current drag and drop feedback.

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

showFeedback

()método 
public static function showFeedback(feedback:String):void

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: 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.

Parámetros

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

Información sobre constantes

COPY

Constante
public static const COPY:String = "copy"

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: 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"

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: 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"

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: 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"

Versión del lenguaje: ActionScript 3.0
Versión de producto: Flex 3
Versiones de motor de ejecución: Flash Player 9, AIR 1.1

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





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Cierto contenido de la Referencia de ActionScript 3.0 se muestra en inglés

No todo el contenido de la Referencia de ActionScript 3.0 se traduce a todos los idiomas. Si un elemento del lenguaje no se traduce, aparecerá en inglés. Por ejemplo, la clase ga.controls.HelpBox no está traducida en ningún idioma. Por lo tanto, en la versión en español de la referencia, la clase ga.controls.HelpBox aparecerá en inglés.