org.eclipse.gmf.runtime.common.ui.services.dnd.drop
Interface IDropTargetListener
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All Superinterfaces:
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DropTargetListener, java.util.EventListener,
org.eclipse.swt.internal.SWTEventListener
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All Known Implementing Classes:
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AbstractDropTargetListener,
ResourceDropTargetListener
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public interface IDropTargetListener
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DropTargetListener
Interface to be implemented by providers to handle drop target events
getExecutableContext
ICommand getExecutableContext(
DropTargetEvent event)
- Returns a command for dropping the event data on the drop target. The
event passed in corresponds to the drop event. The listener can get the
current target from the context.
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Parameters:
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event
- the event associated with the drop event
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Returns:
- Returns a command for dropping the event data on the drop target.
canSupport
boolean canSupport(
IDropTargetContext context,
IDropTargetEvent currentEvent,
ITransferAgent currentAgent)
- Returns a boolean indicating whether the listener can support drop
operations on the current target. The target context, current event and
current transfer agent information is passed to the listener. This method
is invoked whenever the target changes.
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Parameters:
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context
- The drop action context -
currentEvent
- The current drop event -
currentAgent
- the current transfer agent
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Returns:
- Returns true or false
setFeedback
void setFeedback(
DropTargetEvent event)
- Provides the listener an opportunity to set the feedback when hovering
over a target. The listener can decide whether drag under effect is
enabled for the current target.
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Parameters:
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event
- The drop target event
getSupportingTransferIds
java.lang.String[] getSupportingTransferIds()
- Returns the supporting transfer agent ids.
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Returns:
- return the supporting transfer agent ids
Guidelines for using Eclipse APIs.
Copyright (c) IBM Corp., Borland Software Corp., and others 2005,2006. All rights reserved.