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java.awt.dnd
interface DragSourceListener
- All Superinterfaces:
- EventListener
- All Known Implementing Classes:
- DragSourceAdapter, DragSourceContext
public interface DragSourceListener
extends EventListener
The DragSourceListener
defines the
event interface for originators of
Drag and Drop operations to track the state of the user's gesture, and to
provide appropriate "drag over"
feedback to the user throughout the
Drag and Drop operation.
The drop site is associated with the previous dragEnter()
invocation if the latest invocation of dragEnter()
on this
listener:
- corresponds to that drop site and
- is not followed by a
dragExit()
invocation on this listener.
Method Summary |
void |
This method is invoked to signify that the Drag and Drop
operation is complete.
|
void |
Called as the cursor's hotspot enters a platform-dependent drop site.
|
void |
Called as the cursor's hotspot exits a platform-dependent drop site.
|
void |
Called as the cursor's hotspot moves over a platform-dependent drop site.
|
void |
Called when the user has modified the drop gesture.
|
dragDropEnd
public void dragDropEnd(DragSourceDropEvent dsde)
-
This method is invoked to signify that the Drag and Drop
operation is complete. The getDropSuccess() method of
the
DragSourceDropEvent
can be used to
determine the termination state. The getDropAction() method
returns the operation that the drop site selected
to apply to the Drop operation. Once this method is complete, the
current DragSourceContext
and
associated resources become invalid.
- Parameters:
dsde
- the DragSourceDropEvent
dragEnter
public void dragEnter(DragSourceDragEvent dsde)
-
Called as the cursor's hotspot enters a platform-dependent drop site.
This method is invoked when all the following conditions are true:
- The cursor's hotspot enters the operable part of a platform-
dependent drop site.
- The drop site is active.
- The drop site accepts the drag.
- Parameters:
dsde
- the DragSourceDragEvent
dragExit
public void dragExit(DragSourceEvent dse)
-
Called as the cursor's hotspot exits a platform-dependent drop site.
This method is invoked when any of the following conditions are true:
- The cursor's hotspot no longer intersects the operable part
of the drop site associated with the previous dragEnter() invocation.
OR
- The drop site associated with the previous dragEnter() invocation
is no longer active.
OR
- The drop site associated with the previous dragEnter() invocation
has rejected the drag.
- Parameters:
dse
- the DragSourceEvent
dragOver
public void dragOver(DragSourceDragEvent dsde)
-
Called as the cursor's hotspot moves over a platform-dependent drop site.
This method is invoked when all the following conditions are true:
- The cursor's hotspot has moved, but still intersects the
operable part of the drop site associated with the previous
dragEnter() invocation.
- The drop site is still active.
- The drop site accepts the drag.
- Parameters:
dsde
- the DragSourceDragEvent
dropActionChanged
public void dropActionChanged(DragSourceDragEvent dsde)
-
Called when the user has modified the drop gesture.
This method is invoked when the state of the input
device(s) that the user is interacting with changes.
Such devices are typically the mouse buttons or keyboard
modifiers that the user is interacting with.
- Parameters:
dsde
- the DragSourceDragEvent
This documentation differs from the official API.
Jadeite adds
extra features to the API including:
variable font sizes,
constructions examples,
placeholders for classes and methods, and auto-generated “See Also” links.
Additionally it
is missing some items found in standard Javadoc documentation, including:
generics type information,
“Deprecated” tags and comments,
“See Also” links,
along with other minor differences.
Please send any questions or feedback to
bam@cs.cmu.edu.
This page displays the
Jadeite version of the documention, which is derived from the offical documentation that contains this copyright notice:
The official Sun™ documentation can be found here at
http://java.sun.com/javase/6/docs/api/.