org.vectomatic.svg.edit.client.command.dnd

Class DndHandlerBase

java.lang.Object

org.vectomatic.svg.edit.client.command.dnd.DndHandlerBase

All Implemented Interfaces:

IDndHandler

Direct Known Subclasses:

DndCopyHandler, DndLinkHandler, DndMoveHandler

public abstract class DndHandlerBase
extends Object
implements IDndHandler

Base class for drag and drop handlers

Author:

laaglu

Constructor Summary

Constructors

Constructor and Description
DndHandlerBase()

Method Summary

Modifier and Type	Method and Description
int	getKeyCode() Returns the key code associated with this handler
static String	getSourceElementNames(List<SVGElementModel> sourceElements)
boolean	isValidSource(com.extjs.gxt.ui.client.event.DNDEvent event, List<SVGElementModel> sourceElements) Determines the feasibility of creating a command using the specified source elements as drag sources.
boolean	isValidTarget(List<SVGElementModel> sourceElements, SVGElementModel target) Determines if dropping on the specified target will result in a successful command creation.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.vectomatic.svg.edit.client.command.dnd.IDndHandler

createCommands, getMessage, getOperationCssAttr

Constructor Detail

DndHandlerBase

public DndHandlerBase()

Method Detail

isValidSource

public boolean isValidSource(com.extjs.gxt.ui.client.event.DNDEvent event,
                             List<SVGElementModel> sourceElements)

Description copied from interface: IDndHandler

Determines the feasibility of creating a command using the specified source elements as drag sources.

Specified by:

isValidSource in interface IDndHandler

Parameters:

event - The drag and drop event

sourceElements - The elements being dragged

Returns:

True if the drag and drop operation can proceed, false if it should be completely blocked.

getSourceElementNames

public static String getSourceElementNames(List<SVGElementModel> sourceElements)

isValidTarget

public boolean isValidTarget(List<SVGElementModel> sourceElements,
                             SVGElementModel target)

Description copied from interface: IDndHandler

Determines if dropping on the specified target will result in a successful command creation.

Specified by:

isValidTarget in interface IDndHandler

Parameters:

sourceElements - The elements being dragged

target - The hovered target

Returns:

True if the target is authorized, false otherwise

getKeyCode

public int getKeyCode()

Description copied from interface: IDndHandler

Returns the key code associated with this handler

Specified by:

getKeyCode in interface IDndHandler

Returns: