org.eclipse.ui.views.navigator
Class NavigatorDropAdapter

java.lang.Object
  |
  +--org.eclipse.swt.dnd.DropTargetAdapter
        |
        +--org.eclipse.jface.viewers.ViewerDropAdapter
              |
              +--org.eclipse.ui.part.PluginDropAdapter
                    |
                    +--org.eclipse.ui.views.navigator.NavigatorDropAdapter

All Implemented Interfaces:

DropTargetListener, EventListener, IOverwriteQuery, org.eclipse.swt.internal.SWTEventListener

public class NavigatorDropAdapter

extends PluginDropAdapter

implements IOverwriteQuery

Implements drop behaviour for drag and drop operations that land on the resource navigator.

Since:

2.0

Field Summary

Fields inherited from class org.eclipse.ui.part.PluginDropAdapter

ATT_CLASS

Fields inherited from class org.eclipse.jface.viewers.ViewerDropAdapter

LOCATION_AFTER, LOCATION_BEFORE, LOCATION_NONE, LOCATION_ON

Fields inherited from interface org.eclipse.ui.dialogs.IOverwriteQuery

ALL, CANCEL, NO, NO_ALL, YES

Constructor Summary

NavigatorDropAdapter(StructuredViewer viewer)
Constructs a new drop adapter.

Method Summary

void	dragOver(DropTargetEvent event) This implementation of dragOver permits the default operation defined in event.detailto be performed on the current data type defined in event.currentDataType.
boolean	performDrop(Object data) Performs any work associated with the drop.
String	queryOverwrite(String pathString) Returns one of the return code constants declared on this interface, indicating whether the entity represented by the passed String should be overwritten.
boolean	validateDrop(Object target, int operation, TransferData transferType) This method is used to notify the action that some aspect of the drop operation has changed.

Methods inherited from class org.eclipse.ui.part.PluginDropAdapter

drop, getCurrentTransfer, getPluginAdapter

Methods inherited from class org.eclipse.jface.viewers.ViewerDropAdapter

determineLocation, determineTarget, dragEnter, dragOperationChanged, dropAccept, getBounds, getCurrentLocation, getCurrentOperation, getCurrentTarget, getFeedbackEnabled, getSelectedObject, getViewer, handleException, setFeedbackEnabled, setScrollExpandEnabled

Methods inherited from class org.eclipse.swt.dnd.DropTargetAdapter

dragLeave

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NavigatorDropAdapter

public NavigatorDropAdapter(StructuredViewer viewer)

Constructs a new drop adapter.

Method Detail

dragOver

public void dragOver(DropTargetEvent event)

Description copied from class: DropTargetAdapter

This implementation of dragOver permits the default operation defined in event.detailto be performed on the current data type defined in event.currentDataType. For additional information see DropTargetListener.dragOver.

Specified by:

dragOver in interface DropTargetListener

Overrides:

dragOver in class ViewerDropAdapter

Parameters:

event - the information associated with the drag over event

See Also:

DropTargetListener.dragOver(org.eclipse.swt.dnd.DropTargetEvent)

performDrop

public boolean performDrop(Object data)

Description copied from class: ViewerDropAdapter

Performs any work associated with the drop.

Subclasses must implement this method to provide drop behavior.

Overrides:

performDrop in class PluginDropAdapter

See Also:

DropTargetListener#performDrop

queryOverwrite

public String queryOverwrite(String pathString)

Description copied from interface: IOverwriteQuery

Returns one of the return code constants declared on this interface, indicating whether the entity represented by the passed String should be overwritten.

This method may be called from a non-UI thread, in which case this method must run the query in a sync exec in the UI thread, if it needs to query the user.

Specified by:

queryOverwrite in interface IOverwriteQuery

Parameters:

pathString - the path representing the entity to be overwritten

Returns:

one of the return code constants declared on this interface

See Also:

IOverwriteQuery.queryOverwrite(java.lang.String)

validateDrop

public boolean validateDrop(Object target,
                            int operation,
                            TransferData transferType)

This method is used to notify the action that some aspect of the drop operation has changed.

Overrides:

validateDrop in class PluginDropAdapter

Parameters:

target - the object that the mouse is currently hovering over, or null if the mouse is hovering over empty space

operation - the current drag operation (copy, move, etc.)

transferType - the current transfer type

Returns:

true if the drop is valid, and false otherwise