org.scijava.ui.dnd
Class DefaultDragAndDropService

java.lang.Object
  org.scijava.AbstractContextual
      org.scijava.plugin.AbstractRichPlugin
          org.scijava.service.AbstractService
              org.scijava.plugin.AbstractPTService<PT>
                  org.scijava.plugin.AbstractSingletonService<PT>
                      org.scijava.plugin.AbstractHandlerService<Object,DragAndDropHandler<Object>>
                          org.scijava.ui.dnd.DefaultDragAndDropService

All Implemented Interfaces:

Comparable<Prioritized>, Contextual, Disposable, HandlerService<Object,DragAndDropHandler<Object>>, HasPluginInfo, PTService<DragAndDropHandler<Object>>, RichPlugin, SciJavaPlugin, SingletonService<DragAndDropHandler<Object>>, TypedService<Object,DragAndDropHandler<Object>>, Prioritized, SciJavaService, Service, Typed<Object>, DragAndDropService

public class DefaultDragAndDropService
extends AbstractHandlerService<Object,DragAndDropHandler<Object>>
implements DragAndDropService

Default service for handling drag and drop events.

Author:

Curtis Rueden

Constructor Summary

DefaultDragAndDropService()

Method Summary

boolean	drop(DragAndDropData data, Display<?> display) Performs a drag-and-drop operation in the given display with the specified DragAndDropData, using the first available compatible handler.
boolean	drop(Object data, Display<?> display) Performs a drag-and-drop operation in the given display with the specified data object, using the first available compatible handler.
DragAndDropHandler<?>	getHandler(DragAndDropData data, Display<?> display) Gets the drag-and-drop handler which will be used to handle the given DragAndDropData dragged onto the specified display.
DragAndDropHandler<?>	getHandler(Object object, Display<?> display) Gets the drag-and-drop handler which will be used to handle the given object dragged onto the specified display.
Class<DragAndDropHandler<Object>>	getPluginType() Gets the type of plugins managed by this service.
Class<Object>	getType() Gets the type associated with the object.
protected void	onEvent(DragEnterEvent e)
protected void	onEvent(DragExitEvent e)
protected void	onEvent(DragOverEvent e)
protected void	onEvent(DropEvent e)
boolean	supports(DragAndDropData data, Display<?> display) Checks whether the given DragAndDropData can be dropped onto the specified display.
boolean	supports(Object object, Display<?> display) Checks whether the given object can be dropped onto the specified display.

Methods inherited from class org.scijava.plugin.AbstractHandlerService

getHandler, supports

Methods inherited from class org.scijava.plugin.AbstractSingletonService

filterInstances, getInstance, getInstances, initialize

Methods inherited from class org.scijava.plugin.AbstractPTService

getPlugins, getPluginService

Methods inherited from class org.scijava.service.AbstractService

dispose, getContext, registerEventHandlers, setContext, toString

Methods inherited from class org.scijava.plugin.AbstractRichPlugin

compareTo, getInfo, getPriority, setInfo, setPriority

Methods inherited from class org.scijava.AbstractContextual

context

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.scijava.ui.dnd.DragAndDropService

getInstances

Methods inherited from interface org.scijava.plugin.HandlerService

getHandler, supports

Methods inherited from interface org.scijava.plugin.SingletonService

getInstance

Methods inherited from interface org.scijava.plugin.PTService

getPlugins, getPluginService

Methods inherited from interface org.scijava.service.Service

initialize, registerEventHandlers

Methods inherited from interface org.scijava.Contextual

context, getContext, setContext

Methods inherited from interface org.scijava.Prioritized

getPriority, setPriority

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface org.scijava.plugin.HasPluginInfo

getInfo, setInfo

Methods inherited from interface org.scijava.Disposable

dispose

Constructor Detail

DefaultDragAndDropService

public DefaultDragAndDropService()

Method Detail

supports

public boolean supports(DragAndDropData data,
                        Display<?> display)

Description copied from interface: DragAndDropService

Checks whether the given DragAndDropData can be dropped onto the specified display. A (data, display) pair is deemed compatible if a compatible handler exists for them.

Specified by:

supports in interface DragAndDropService

See Also:

DragAndDropHandler

supports

public boolean supports(Object object,
                        Display<?> display)

Description copied from interface: DragAndDropService

Checks whether the given object can be dropped onto the specified display. An (object, display) pair is deemed compatible if a compatible handler exists for them.

Specified by:

supports in interface DragAndDropService

See Also:

DragAndDropHandler

drop

public boolean drop(DragAndDropData data,
                    Display<?> display)

Description copied from interface: DragAndDropService

Performs a drag-and-drop operation in the given display with the specified DragAndDropData, using the first available compatible handler.

Specified by:

drop in interface DragAndDropService

Returns:

true if the drop operation was successful

See Also:

DragAndDropHandler

drop

public boolean drop(Object data,
                    Display<?> display)

Description copied from interface: DragAndDropService

Performs a drag-and-drop operation in the given display with the specified data object, using the first available compatible handler.

Specified by:

drop in interface DragAndDropService

Returns:

true if the drop operation was successful

See Also:

DragAndDropHandler

getHandler

public DragAndDropHandler<?> getHandler(DragAndDropData data,
                                        Display<?> display)

Description copied from interface: DragAndDropService

Gets the drag-and-drop handler which will be used to handle the given DragAndDropData dragged onto the specified display.

Specified by:

getHandler in interface DragAndDropService

Returns:

The first compatible drag-and-drop handler, or null if none available.

getHandler

public DragAndDropHandler<?> getHandler(Object object,
                                        Display<?> display)

Description copied from interface: DragAndDropService

Gets the drag-and-drop handler which will be used to handle the given object dragged onto the specified display.

Specified by:

getHandler in interface DragAndDropService

Returns:

The first compatible drag-and-drop handler, or null if none available.

getPluginType

public Class<DragAndDropHandler<Object>> getPluginType()

Description copied from interface: PTService

Gets the type of plugins managed by this service.

Specified by:

getPluginType in interface PTService<DragAndDropHandler<Object>>

getType

public Class<Object> getType()

Description copied from interface: Typed

Gets the type associated with the object.

Specified by:

getType in interface Typed<Object>

onEvent

protected void onEvent(DragEnterEvent e)

onEvent

protected void onEvent(DragExitEvent e)

onEvent

protected void onEvent(DragOverEvent e)

onEvent

protected void onEvent(DropEvent e)