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org.eclipse.gmf.runtime.common.ui.services.dnd.drop
Class TransferDropTargetAdapter

java.lang.Object
  
org.eclipse.gmf.runtime.common.ui.services.dnd.drop.TransferDropTargetAdapter

All Implemented Interfaces:

java.util.EventListener, ITransferDropTargetListener, DropTargetListener, org.eclipse.swt.internal.SWTEventListener

Direct Known Subclasses:

SelectionDropAdapter

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public class TransferDropTargetAdapter
extends java.lang.Object
implements 
ITransferDropTargetListener

Parent of all the transfer drop target adapters. Every transfer type drop target adapter should override the methods in the DropTargetListener interface.

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Constructor Summary
TransferDropTargetAdapter ( ITransferAgent aTransferAgent)           Constructor for TransferDropTargetAdapter.

 

Method Summary
boolean	canSupport ( DropTargetEvent event)           Returns whether the drop operation for the current drop event is supported by this listener.
protected  boolean	canSupportTransferData ( DropTargetEvent event)           Checks if the transfer agent can support one of the transfer datas passed into the event.
void	dragEnter ( DropTargetEvent event)
void	dragLeave ( DropTargetEvent event)
void	dragOperationChanged ( DropTargetEvent event)
void	dragOver ( DropTargetEvent event)
void	drop ( DropTargetEvent event)
void	dropAccept ( DropTargetEvent event)
protected   IDropTargetContext	getContext ()           Returns the context.
protected   IDropTargetListener	getListener ()           Returns the listener.
ITransferAgent	getTransferAgent ()           Returns the transfer agent.
void	init ( IDropTargetContext initialContext)           Initializes this transfer drop target listener with the drop target context that provides the target and location information during the drag/drop operation.
protected  boolean	isSupportingListenerAvailable ()           Check if a supporting listener is available.It also updates the current listener cache.

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

TransferDropTargetAdapter

public TransferDropTargetAdapter(
ITransferAgent aTransferAgent)

Constructor for TransferDropTargetAdapter.

Parameters:

aTransferAgent - The transfer agent

Method Detail

dragEnter

public void dragEnter(
DropTargetEvent event)

Specified by:

dragEnter in interface DropTargetListener

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dragLeave

public void dragLeave(
DropTargetEvent event)

Specified by:

dragLeave in interface DropTargetListener

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dragOperationChanged

public void dragOperationChanged(
DropTargetEvent event)

Specified by:

dragOperationChanged in interface DropTargetListener

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dragOver

public void dragOver(
DropTargetEvent event)

Specified by:

dragOver in interface DropTargetListener

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drop

public final void drop(
DropTargetEvent event)

Specified by:

drop in interface DropTargetListener

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dropAccept

public void dropAccept(
DropTargetEvent event)

Specified by:

dropAccept in interface DropTargetListener

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getListener

protected final 
IDropTargetListener getListener()

Returns the listener.

Returns:

IDropTargetListener

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getContext

protected final 
IDropTargetContext getContext()

Returns the context.

Returns:

IDropTargetContext

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init

public final void init(
IDropTargetContext initialContext)

Description copied from interface: ITransferDropTargetListener

Initializes this transfer drop target listener with the drop target context that provides the target and location information during the drag/drop operation.

Specified by:

init in interface ITransferDropTargetListener

Parameters:

initialContext - the drop target context

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getTransferAgent

public final 
ITransferAgent getTransferAgent()

Returns the transfer agent.

Specified by:

getTransferAgent in interface ITransferDropTargetListener

Returns:

ITransferAgent

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canSupport

public boolean canSupport(
DropTargetEvent event)

Description copied from interface: ITransferDropTargetListener

Returns whether the drop operation for the current drop event is supported by this listener. This listener will have access to the IDropActionContext and the current drop target listener when this method is invoked.

Specified by:

canSupport in interface ITransferDropTargetListener

Parameters:

event - The drop target event

Returns:

true if can support, false otherwise

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isSupportingListenerAvailable

protected final boolean isSupportingListenerAvailable()

Check if a supporting listener is available.It also updates the current listener cache.

Returns:

boolean true or false

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canSupportTransferData

protected final boolean canSupportTransferData(
DropTargetEvent event)

Checks if the transfer agent can support one of the transfer datas passed into the event. It also updates the internal current event cache and sets the current data type on the current event.

Parameters:

event - the drop target event

Returns:

boolean true or false

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