DragGestureEvent (Java 2 Platform SE v1.4.1_"07")

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JavaTM 2 Platform
Std. Ed. v1.4.1_"07"

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## java.awt.dnd
Class DragGestureEvent

    java.lang.Object
      |
      +--java.util.EventObject
            |
            +--java.awt.dnd.DragGestureEvent

All Implemented Interfaces:
  Serializable

public class DragGestureEvent
extends EventObject

A `DragGestureEvent` is passed to `DragGestureListener`'s dragGestureRecognized() method when a particular `DragGestureRecognizer` detects that a platform dependent drag initiating gesture has occurred on the `Component` that it is tracking.

See Also:
  `DragGestureRecognizer`, `DragGestureListener`, `DragSource`, Serialized Form

Field Summary

Fields inherited from class java.util.EventObject
`source`

Constructor Summary
`DragGestureEvent(DragGestureRecognizer dgr, int act, Point ori, List evs)` Construct a `DragGestureEvent` given the `DragGestureRecognizer` firing this event, an `int` representing the user's preferred action, a `Point` indicating the origin of the drag, and a `List` of events that comprise the gesture.

Method Summary
`Component` | `getComponent()` Returns the `Component` associated with this `DragGestureEvent`.
`int` | `getDragAction()` Returns an `int` representing the action selected by the user.
`Point` | `getDragOrigin()` Returns a `Point` in the coordinates of the `Component` over which the drag originated.
`DragSource` | `getDragSource()` Returns the `DragSource`.
`DragGestureRecognizer` | `getSourceAsDragGestureRecognizer()` Returns the source as a `DragGestureRecognizer`.
`InputEvent` | `getTriggerEvent()` Returns the initial event that triggered the gesture.
`Iterator` | `iterator()` Returns an `Iterator` for the events comprising the gesture.
`void` | `startDrag(Cursor dragCursor, Image dragImage, Point imageOffset, Transferable transferable, DragSourceListener dsl)` Start the drag given the initial `Cursor` to display, a drag `Image`, the offset of the `Image`, the `Transferable` object, and the `DragSourceListener` to use.
`void` | `startDrag(Cursor dragCursor, Transferable transferable)` Starts the drag operation given the `Cursor` for this drag operation and the `Transferable` representing the source data for this drag operation.
`void` | `startDrag(Cursor dragCursor, Transferable transferable, DragSourceListener dsl)` Starts the drag given the initial `Cursor` to display, the `Transferable` object, and the `DragSourceListener` to use.
`Object[]` | `toArray()` Returns an `Object` array of the events comprising the drag gesture.
`Object[]` | `toArray(Object[] array)` Returns an array of the events comprising the drag gesture.

Methods inherited from class java.util.EventObject
`getSource, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### DragGestureEvent

    public DragGestureEvent(DragGestureRecognizer dgr,
                            int act,
                            Point ori,
                            List evs)

  Construct a `DragGestureEvent` given the `DragGestureRecognizer` firing this event, an `int` representing the user's preferred action, a `Point` indicating the origin of the drag, and a `List` of events that comprise the gesture.

Parameters:
  `dgr` - The `DragGestureRecognizer` firing this event
  `act` - The the user's preferred action
  `ori` - The origin of the drag
  `evs` - The `List` of events that comprise the gesture

Throws:
  ``IllegalArgumentException`` - if input parameters are null

Method Detail

### getSourceAsDragGestureRecognizer

    public DragGestureRecognizer getSourceAsDragGestureRecognizer()

  Returns the source as a `DragGestureRecognizer`.

  Returns:
    the source as a `DragGestureRecognizer`

### getComponent

    public Component getComponent()

  Returns the `Component` associated with this `DragGestureEvent`.

  Returns:
    the Component

### getDragSource

    public DragSource getDragSource()

  Returns the `DragSource`.

  Returns:
    the `DragSource`

### getDragOrigin

    public Point getDragOrigin()

  Returns a `Point` in the coordinates of the `Component` over which the drag originated.

  Returns:
    the Point where the drag originated in Component coords.

### iterator

    public Iterator iterator()

  Returns an `Iterator` for the events comprising the gesture.

  Returns:
    an Iterator for the events comprising the gesture

### toArray

    public Object[] toArray()

  Returns an `Object` array of the events comprising the drag gesture.

  Returns:
    an array of the events comprising the gesture

### toArray

    public Object[] toArray(Object[] array)

  Returns an array of the events comprising the drag gesture.

  Parameters:
    `array` - the array of `EventObject` sub(types)

  Returns:
    an array of the events comprising the gesture

### getDragAction

    public int getDragAction()

  Returns an `int` representing the action selected by the user.

  Returns:
    the action selected by the user

### getTriggerEvent

    public InputEvent getTriggerEvent()

  Returns the initial event that triggered the gesture.

  Returns:
    the first "triggering" event in the sequence of the gesture

### startDrag

    public void startDrag(Cursor dragCursor,
                          Transferable transferable)
                   throws InvalidDnDOperationException

  Starts the drag operation given the `Cursor` for this drag operation and the `Transferable` representing the source data for this drag operation.
  If a `null` `Cursor` is specified no exception will be thrown and default drag cursors will be used instead.
  If a `null` `Transferable` is specified `NullPointerException` will be thrown.

  Parameters:
    `dragCursor` - The `Cursor` for this drag operation
    `transferable` - The `Transferable` representing the source data for this drag operation.
  Throws:
    ``InvalidDnDOperationException`` - if the Drag and Drop system is unable to initiate a drag operation, or if the user attempts to start a drag while an existing drag operation is still executing.
    ``NullPointerException`` - if the `Transferable` is `null`.
    `InvalidDnDOperationException`
  Since:
    1.4

### startDrag

    public void startDrag(Cursor dragCursor,
                          Transferable transferable,
                          DragSourceListener dsl)
                   throws InvalidDnDOperationException

  Starts the drag given the initial `Cursor` to display, the `Transferable` object, and the `DragSourceListener` to use.

  Parameters:
    `dragCursor` - The initial drag Cursor
    `transferable` - The source's Transferable
    `dsl` - The source's DragSourceListener

  Throws:
    ``InvalidDnDOperationException`` - if the Drag and Drop system is unable to initiate a drag operation, or if the user attempts to start a drag while an existing drag operation is still executing.
    `InvalidDnDOperationException`

### startDrag

    public void startDrag(Cursor dragCursor,
                          Image dragImage,
                          Point imageOffset,
                          Transferable transferable,
                          DragSourceListener dsl)
                   throws InvalidDnDOperationException

  Start the drag given the initial `Cursor` to display, a drag `Image`, the offset of the `Image`, the `Transferable` object, and the `DragSourceListener` to use.

  Parameters:
    `dragCursor` - The initial drag Cursor
    `dragImage` - The source's dragImage
    `imageOffset` - The dragImage's offset
    `transferable` - The source's Transferable
    `dsl` - The source's DragSourceListener

  Throws:
    ``InvalidDnDOperationException`` - if the Drag and Drop system is unable to initiate a drag operation, or if the user attempts to start a drag while an existing drag operation is still executing.
    `InvalidDnDOperationException`

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JavaTM 2 Platform
Std. Ed. v1.4.1_"07"

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