Package com.nomagic.magicdraw.ui.dnd

Class DiagramTransferableDragAndDropHandler

java.lang.Object

com.nomagic.magicdraw.ui.dnd.DiagramTransferableDragAndDropHandler

All Implemented Interfaces:

ConfiguratorWithPriority, PriorityProvider, PriorityProvider

@OpenApiAll
public abstract class DiagramTransferableDragAndDropHandler
extends Object
implements ConfiguratorWithPriority

Drop handler to DiagramPresentationElement based on Transferable.

Field Summary

Fields inherited from interface com.nomagic.utils.PriorityProvider

HIGH_PRIORITY, LOW_PRIORITY, MEDIUM_PRIORITY

Constructor Summary

Constructors

Constructor	Description
DiagramTransferableDragAndDropHandler()

Method Summary

Modifier and Type	Method	Description
abstract void	drop(Point location, DiagramPresentationElement diagramPresentationElement, PresentationElement elementOver, Transferable transferable)	Drops calculated DropTarget.
String	getDescription()	Returns a human-readable description of what the handler can achieve.
abstract DropTarget	getDropTarget(Point location, DiagramPresentationElement diagramPresentationElement, Transferable transferable)	Gets DropTarget for this handler.
int	getPriority()	Returns priority of this configurator.

Methods inherited from class java.lang.Object

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

Constructor Details

DiagramTransferableDragAndDropHandler

public DiagramTransferableDragAndDropHandler()

Method Details

getDropTarget

public abstract DropTarget getDropTarget(Point location,
 DiagramPresentationElement diagramPresentationElement,
 Transferable transferable)

Gets DropTarget for this handler.

Parameters:

location - location on the diagram

diagramPresentationElement - diagram presentation element on which the drag is being performed

transferable - transferable drag&drop object

Returns:

calculated drop target for this handler

drop

public abstract void drop(Point location,
 DiagramPresentationElement diagramPresentationElement,
 PresentationElement elementOver,
 Transferable transferable)

Drops calculated DropTarget.

Parameters:

location - location on the diagram

diagramPresentationElement - diagram presentation element

elementOver - symbol on which drag is being performed (if drop target was not specified, passes DiagramPresentationElement)

transferable - transferable drag&drop object

getDescription

@CheckForNull
public String getDescription()

Returns a human-readable description of what the handler can achieve. Might be used to inform user about the purpose of this handler in various GUI forms, mostly tool tips.

Returns:

description as a String or null if no description is provided

getPriority

public int getPriority()

Description copied from interface: ConfiguratorWithPriority

Returns priority of this configurator. All configurators are sorted by priority before configuration. This is very important if one configurator expects input from other configurators. In such case configurator must have lower priority than others.

Specified by:

getPriority in interface ConfiguratorWithPriority

Specified by:

getPriority in interface PriorityProvider

Returns:

priority of this configurator.

See Also:

• PriorityProvider.HIGH_PRIORITY
• PriorityProvider.MEDIUM_PRIORITY
• PriorityProvider.LOW_PRIORITY