Eclipse GMF Guide (Galileo) - AbstractDragDropListenerProvider (Eclipse GMF Documentation)

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org.eclipse.gmf.runtime.common.ui.services.dnd.core
Class AbstractDragDropListenerProvider

java.lang.Object
  

org.eclipse.gmf.runtime.common.core.service.AbstractProvider
      
org.eclipse.gmf.runtime.common.ui.services.dnd.core.AbstractDragDropListenerProvider

All Implemented Interfaces:: IProvider, IDragDropListenerProvider

public abstract class AbstractDragDropListenerProvider
extends AbstractProvider
implements IDragDropListenerProvider
extends AbstractProvider
implements IDragDropListenerProvider

The abstract parent of all concrete drag and drop listener providers. A concrete provider needs to override the getDragSourceListener() and getDropTargetListener methods. The provides method has a default implementation. The provides() method is already handled by the proxy for the provider ( DragDropListenerService.ProviderDescriptor). The proxy contains all the information necessary for the provides() method.

Constructor Summary

AbstractDragDropListenerProvider ()
          Constructor for AbstractDragDropListenerProvider.

Method Summary

IDragSourceListener[] getDragSourceListeners ( IDragListenerContext context)
          Returns an array of IDragSourceListener for the given IDragDropListenerContext

IDropTargetListener[] getDropTargetListeners ( IDropListenerContext context)
          Returns an array of IDropTargetListener for the given IDragDropListenerContext

boolean provides ( IOperation operation)
          Returns true if the provider can handle the ListenerOperation operation

Methods inherited from class org.eclipse.gmf.runtime.common.core.service. AbstractProvider

addProviderChangeListener, fireProviderChange, removeProviderChangeListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.gmf.runtime.common.core.service. IProvider

addProviderChangeListener, removeProviderChangeListener

Constructor Detail

AbstractDragDropListenerProvider

public AbstractDragDropListenerProvider()

Constructor for AbstractDragDropListenerProvider.

Method Detail

provides

public final boolean provides(
IOperation operation)

Returns true if the provider can handle the ListenerOperation operation

Specified by:: provides in interface IProvider

Parameters:: operation - An operation
Returns:: Returns true if the provider can handle the ListenerOperation operation. Otherwise returns false
See Also:: IProvider.provides(org.eclipse.gmf.runtime.common.core.service.IOperation)

getDragSourceListeners

public 
IDragSourceListener[] getDragSourceListeners(
IDragListenerContext context)

Description copied from interface: IDragDropListenerProvider

Returns an array of IDragSourceListener for the given IDragDropListenerContext

Specified by:: getDragSourceListeners in interface IDragDropListenerProvider

Parameters:: context - The context for the provider
Returns:: Returns an array of IDragSourceListener

getDropTargetListeners

public 
IDropTargetListener[] getDropTargetListeners(
IDropListenerContext context)