org.eclipse.net4j.util.ui.dnd
Class DNDDropAdapter<TYPE>
java.lang.Object
org.eclipse.swt.dnd.DropTargetAdapter
org.eclipse.jface.viewers.ViewerDropAdapter
org.eclipse.net4j.util.ui.dnd.DNDDropAdapter<TYPE>
- All Implemented Interfaces:
- EventListener, DropTargetListener, org.eclipse.swt.internal.SWTEventListener
public abstract class DNDDropAdapter<TYPE>
- extends ViewerDropAdapter
- Author:
- Eike Stepper
Methods inherited from class org.eclipse.jface.viewers.ViewerDropAdapter |
clearState, determineTarget, dragEnter, dragOperationChanged, dragOver, drop, dropAccept, getBounds, getCurrentEvent, getCurrentLocation, getCurrentOperation, getCurrentTarget, getFeedbackEnabled, getSelectedObject, handleException, overrideOperation, setExpandEnabled, setFeedbackEnabled, setScrollEnabled, setScrollExpandEnabled, setSelectionFeedbackEnabled |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
DNDDropAdapter
protected DNDDropAdapter(Transfer[] transfers,
StructuredViewer viewer)
- Since:
- 3.0
getTransfers
public Transfer[] getTransfers()
- Since:
- 3.0
getViewer
public StructuredViewer getViewer()
- Overrides:
getViewer
in class ViewerDropAdapter
- Returns:
- the viewer to which this drop support has been added.
isDropBetweenEnabled
public boolean isDropBetweenEnabled()
setDropBetweenEnabled
public void setDropBetweenEnabled(boolean dropBetweenEnabled)
determineLocation
protected int determineLocation(DropTargetEvent event)
- Description copied from class:
org.eclipse.jface.viewers.ViewerDropAdapter
- Returns the position of the given event's coordinates relative to its target.
The position is determined to be before, after, or on the item, based on
some threshold value.
- Overrides:
determineLocation
in class ViewerDropAdapter
- Parameters:
event
- the event
- Returns:
- one of the
LOCATION_*
constants defined in this class
performDrop
public boolean performDrop(Object data)
- Description copied from class:
org.eclipse.jface.viewers.ViewerDropAdapter
- Performs any work associated with the drop.
Subclasses must implement this method to provide drop behavior.
- Specified by:
performDrop
in class ViewerDropAdapter
- Parameters:
data
- the drop data
- Returns:
true
if the drop was successful, and
false
otherwise
validateDrop
public boolean validateDrop(Object target,
int operation,
TransferData type)
- Description copied from class:
org.eclipse.jface.viewers.ViewerDropAdapter
- Validates dropping on the given object. This method is called whenever some
aspect of the drop operation changes.
Subclasses must implement this method to define which drops make sense.
- Specified by:
validateDrop
in class ViewerDropAdapter
- Parameters:
target
- the object that the mouse is currently hovering over, or
null
if the mouse is hovering over empty spaceoperation
- the current drag operation (copy, move, etc.)type
- the current transfer type
- Returns:
true
if the drop is valid, and false
otherwise
validateTarget
protected abstract boolean validateTarget(Object target,
int operation)
performDrop
protected abstract boolean performDrop(TYPE data,
Object target)
Copyright (c) 2004 - 2011 Eike Stepper (Berlin, Germany) and others.