| Paquete | mx.core |
| Clase | public class DragSource |
| Herencia | DragSource  Object |
| Versión del lenguaje: | ActionScript 3.0 |
| Versión de producto: | Flex 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Each format of data is identified with a string. The
hasFormat() method is used to determine if the object has
data in that format. The dataForFormat() method is used
to retrieve the data in the specified format.
Data can be added directly using the addData() method,
or indirectly using the addHandler() method. The
addHandler() method registers a callback that will be called
if the data is requested. This is useful for adding data in a non-native
format that may require large computations or conversions. For example,
if you have raw sound data you can add an MP3 format handler. The MP3
conversion will only be done if the MP3 data is requested.
Ocultar propiedades públicas heredadas
Mostrar propiedades públicas heredadas| Propiedad | Definido por | ||
|---|---|---|---|
 | constructor : Object
Una referencia a la clase de objeto o función constructora para una instancia de objeto determinada. | Object | |
| formats : Array [solo lectura]
Contains the formats of the drag data, as an Array of Strings. | DragSource | ||
| Método | Definido por | ||
|---|---|---|---|
Constructor. | DragSource | ||
Adds data and a corresponding format String to the drag source. | DragSource | ||
Adds a handler that is called when data
for the specified format is requested. | DragSource | ||
Retrieves the data for the specified format. | DragSource | ||
Returns true if the data source contains
the requested format; otherwise, it returns false. | DragSource | ||
|
Indica si un objeto tiene definida una propiedad especificada. | Object | |
|
Indica si hay una instancia de la clase Object en la cadena de prototipo del objeto especificado como parámetro. | Object | |
|
Indica si existe la propiedad especificada y si es enumerable. | Object | |
|
Establece la disponibilidad de una propiedad dinámica para operaciones de bucle. | Object | |
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Devuelve la representación de cadena de este objeto, con formato según las convenciones específicas de configuración regional. | Object | |
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Devuelve la representación de cadena del objeto especificado. | Object | |
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Devuelve el valor simple del objeto especificado. | Object | |
formats | propiedad |
formats:Array [solo lectura] | Versión del lenguaje: | ActionScript 3.0 |
| Versión de producto: | Flex 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Contains the formats of the drag data, as an Array of Strings.
Set this property using the addData()
or addHandler() methods.
The default value depends on data added to the DragSource object.
Implementación
public function get formats():ArrayDragSource | () | Información sobre |
public function DragSource()| Versión del lenguaje: | ActionScript 3.0 |
| Versión de producto: | Flex 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Constructor.
addData | () | método |
public function addData(data:Object, format:String):void| Versión del lenguaje: | ActionScript 3.0 |
| Versión de producto: | Flex 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Adds data and a corresponding format String to the drag source. This method does not return a value.
Parámetros
data:Object — Object that specifies the drag data.
This can be any object, such as a String, a DataProvider, and so on.
| |
format:String — String that specifies a label that describes
the format for this data.
|
addHandler | () | método |
public function addHandler(handler:Function, format:String):void| Versión del lenguaje: | ActionScript 3.0 |
| Versión de producto: | Flex 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Adds a handler that is called when data for the specified format is requested. This is useful when dragging large amounts of data. The handler is only called if the data is requested. This method does not return a value.
Parámetros
handler:Function — Function that specifies the handler
called to request the data.
This function must return the data in the specified format.
| |
format:String — String that specifies the format for this data.
|
dataForFormat | () | método |
public function dataForFormat(format:String):Object| Versión del lenguaje: | ActionScript 3.0 |
| Versión de producto: | Flex 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Retrieves the data for the specified format.
If the data was added with the addData() method,
it is returned directly.
If the data was added with the addHandler() method,
the handler function is called to return the data.
Parámetros
format:String — String that specifies a label that describes
the format for the data to return. This string can be a custom value
if you are creating a custom drop target with the addData() method.
List-based controls have predefined values
for the |
Object — An Object
containing the data in the requested format.
If you drag multiple items, the returned value is an Array.
For a List-based control, the returned value is always an Array,
even if it contains a single item.
|
hasFormat | () | método |
public function hasFormat(format:String):Boolean| Versión del lenguaje: | ActionScript 3.0 |
| Versión de producto: | Flex 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Returns true if the data source contains
the requested format; otherwise, it returns false.
Parámetros
format:String — String that specifies a label that describes the format
for the data.
|
Boolean — true if the data source contains
the requested format.
|
Tue Jun 12 2018, 02:12 PM Z