Java java.awt.dnd Class DragSourceDragEvent（JDK8）

Constructor Detail

• DragSourceDragEvent

  public DragSourceDragEvent(DragSourceContext dsc,
                             int dropAction,
                             int action,
                             int modifiers)

  Constructs a DragSourceDragEvent. This class is typically instantiated by the DragSourceContextPeer rather than directly by client code. The coordinates for this DragSourceDragEvent are not specified, so getLocation will return null for this event.

  The arguments dropAction and action should be one of DnDConstants that represents a single action. The argument modifiers should be either a bitwise mask of old java.awt.event.InputEvent.*_MASK constants or a bitwise mask of extended java.awt.event.InputEvent.*_DOWN_MASK constants. This constructor does not throw any exception for invalid dropAction, action and modifiers.

  Parameters:

  dsc - the DragSourceContext that is to manage notifications for this event.

  dropAction - the user drop action.

  action - the target drop action.

  modifiers - the modifier keys down during event (shift, ctrl, alt, meta) Either extended _DOWN_MASK or old _MASK modifiers should be used, but both models should not be mixed in one event. Use of the extended modifiers is preferred.

  Throws:

  IllegalArgumentException - if dsc is null.

  See Also:

  InputEvent, DragSourceEvent.getLocation()

• DragSourceDragEvent

  public DragSourceDragEvent(DragSourceContext dsc,
                             int dropAction,
                             int action,
                             int modifiers,
                             int x,
                             int y)

  Constructs a DragSourceDragEvent given the specified DragSourceContext, user drop action, target drop action, modifiers and coordinates.

  The arguments dropAction and action should be one of DnDConstants that represents a single action. The argument modifiers should be either a bitwise mask of old java.awt.event.InputEvent.*_MASK constants or a bitwise mask of extended java.awt.event.InputEvent.*_DOWN_MASK constants. This constructor does not throw any exception for invalid dropAction, action and modifiers.

  Parameters:

  dsc - the DragSourceContext associated with this event.

  dropAction - the user drop action.

  action - the target drop action.

  modifiers - the modifier keys down during event (shift, ctrl, alt, meta) Either extended _DOWN_MASK or old _MASK modifiers should be used, but both models should not be mixed in one event. Use of the extended modifiers is preferred.

  x - the horizontal coordinate for the cursor location

  y - the vertical coordinate for the cursor location

  Throws:

  IllegalArgumentException - if dsc is null.

  Since:

  1.4

  See Also:

  InputEvent

Method Detail

• getTargetActions

  public int getTargetActions()

  This method returns the target drop action.

  Returns:

  the target drop action.

• getGestureModifiers

  public int getGestureModifiers()

  This method returns an int representing the current state of the input device modifiers associated with the user's gesture. Typically these would be mouse buttons or keyboard modifiers.

  If the modifiers passed to the constructor are invalid, this method returns them unchanged.

  Returns:

  the current state of the input device modifiers

• getGestureModifiersEx

  public int getGestureModifiersEx()

  This method returns an int representing the current state of the input device extended modifiers associated with the user's gesture. See InputEvent.getModifiersEx()

  If the modifiers passed to the constructor are invalid, this method returns them unchanged.

  Returns:

  the current state of the input device extended modifiers

  Since:

  1.4

• getUserAction

  public int getUserAction()

  This method returns the user drop action.

  Returns:

  the user drop action.

• getDropAction

  public int getDropAction()

  This method returns the logical intersection of the target drop action and the set of drop actions supported by the drag source.

  Returns:

  the logical intersection of the target drop action and the set of drop actions supported by the drag source.