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org.eclipse.ui.navigator
Class CommonDropAdapter
java.lang.Object
org.eclipse.swt.dnd.DropTargetAdapter
org.eclipse.jface.viewers.ViewerDropAdapter
org.eclipse.ui.part.PluginDropAdapter
org.eclipse.ui.navigator.CommonDropAdapter
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All Implemented Interfaces:
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EventListener,
DropTargetListener, org.eclipse.swt.internal.SWTEventListener
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public final class CommonDropAdapter
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PluginDropAdapter
Provides an implementation of
PluginDropAdapter which uses the
extensions provided by the associated
INavigatorContentService.
Clients should not need to create an instance of this class unless they are
creating their own custom viewer. Otherwise,
CommonViewer configures
its drop adapter automatically.
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Since:
- 3.2
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See Also:
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INavigatorDnDService,
CommonDragAdapter,
CommonDragAdapterAssistant,
CommonDropAdapterAssistant,
CommonViewer
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Methods inherited from class org.eclipse.jface.viewers.
ViewerDropAdapter
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clearState,
determineLocation,
determineTarget,
dragOperationChanged,
dragOver,
dropAccept,
getCurrentEvent,
getFeedbackEnabled,
getSelectedObject,
getViewer,
handleException,
setExpandEnabled,
setFeedbackEnabled,
setScrollEnabled,
setScrollExpandEnabled,
setSelectionFeedbackEnabled
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Methods inherited from class java.lang.
Object
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clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait
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CommonDropAdapter
public CommonDropAdapter(
INavigatorContentService aContentService,
StructuredViewer aStructuredViewer)
- Create a DropAdapter that handles a drop based on the given content
service and selection provider.
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Parameters:
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aContentService - The content service this Drop Adapter is associated with -
aStructuredViewer - The viewer this DropAdapter is associated with.
getSupportedDropTransfers
public
Transfer[] getSupportedDropTransfers()
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Returns:
- An array of Transfers allowed by the CommonDropAdapter. Includes
LocalSelectionTransfer.getTransfer(),
FileTransfer.getInstance(),
PluginTransfer.getInstance(). -
See Also:
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LocalSelectionTransfer,
FileTransfer,
PluginTransfer
dragEnter
public void dragEnter(
DropTargetEvent event)
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Description copied from class:
DropTargetAdapter
- This implementation of
dragEnter permits the default
operation defined in event.detailto be performed on the current data type
defined in event.currentDataType.
For additional information see DropTargetListener.dragEnter.
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Specified by:
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dragEnter
in interface
DropTargetListener
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Overrides:
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dragEnter
in class
ViewerDropAdapter
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Parameters:
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event - the information associated with the drag enter event -
See Also:
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DropTargetEvent
dragLeave
public void dragLeave(
DropTargetEvent event)
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Description copied from class:
DropTargetAdapter
- This implementation of
dragLeave does nothing.
For additional information see DropTargetListener.dragOperationChanged.
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Specified by:
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dragLeave
in interface
DropTargetListener
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Overrides:
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dragLeave
in class
DropTargetAdapter
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Parameters:
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event - the information associated with the drag leave event -
See Also:
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DropTargetEvent
performDrop
public boolean performDrop(
Object data)
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Description copied from class:
ViewerDropAdapter
- Performs any work associated with the drop.
Subclasses must implement this method to provide drop behavior.
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Overrides:
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performDrop
in class
PluginDropAdapter
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Parameters:
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data - the drop data
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Returns:
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true if the drop was successful, and
false otherwise -
See Also:
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ViewerDropAdapter.performDrop(java.lang.Object)
validateDrop
public boolean validateDrop(
Object aDropTarget,
int theDropOperation,
TransferData theTransferData)
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Description copied from class:
PluginDropAdapter
- The
PluginDropAdapter implementation of this
ViewerDropAdapter method is used to notify the action that some
aspect of the drop operation has changed. Subclasses may override.
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Overrides:
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validateDrop
in class
PluginDropAdapter
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Parameters:
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aDropTarget - the object that the mouse is currently hovering over, or
null if the mouse is hovering over empty space -
theDropOperation - the current drag operation (copy, move, etc.) -
theTransferData - the current transfer type
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Returns:
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true if the drop is valid, and false
otherwise
getBounds
public
Rectangle getBounds(
Item item)
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Description copied from class:
ViewerDropAdapter
- Returns the bounds of the given SWT tree or table item.
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Overrides:
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getBounds
in class
ViewerDropAdapter
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Parameters:
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item - the SWT Item
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Returns:
- the bounds, or
null if it is not a known type of item
getCurrentLocation
public int getCurrentLocation()
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Description copied from class:
ViewerDropAdapter
- Returns a constant describing the position of the mouse relative to the
target (before, on, or after the target.
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Overrides:
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getCurrentLocation
in class
ViewerDropAdapter
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Returns:
- one of the
LOCATION_* constants defined in this type
getCurrentOperation
public int getCurrentOperation()
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Description copied from class:
ViewerDropAdapter
- Returns the current operation.
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Overrides:
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getCurrentOperation
in class
ViewerDropAdapter
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Returns:
- a
DROP_* constant from class DND
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See Also:
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DND.DROP_COPY,
DND.DROP_MOVE,
DND.DROP_LINK,
DND.DROP_NONE
overrideOperation
public void overrideOperation(int operation)
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Description copied from class:
ViewerDropAdapter
- Overrides the current operation for a drop that happens immediately
after the current validateDrop.
This maybe called only from within a
ViewerDropAdapter.validateDrop(Object, int, TransferData) method
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Overrides:
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overrideOperation
in class
ViewerDropAdapter
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Parameters:
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operation - the operation to be used for the drop. -
Since:
- 3.4
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See Also:
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ViewerDropAdapter.overrideOperation(int)
getCurrentTarget
public
Object getCurrentTarget()
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Description copied from class:
ViewerDropAdapter
- Returns the target object currently under the mouse.
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Overrides:
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getCurrentTarget
in class
ViewerDropAdapter
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Returns:
- the current target object
getCurrentTransfer
public
TransferData getCurrentTransfer()
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Description copied from class:
PluginDropAdapter
- Returns the current transfer.
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Overrides:
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getCurrentTransfer
in class
PluginDropAdapter
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Guidelines for using Eclipse APIs.
Copyright (c) Eclipse contributors and others 2000, 2008. All rights reserved.
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