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

Class DndLinkHandler

java.lang.Object

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

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

All Implemented Interfaces:

IDndHandler

public class DndLinkHandler
extends DndHandlerBase

Class to manage instantiation of def elements drag-and-drop interactions

Author:

laaglu

Constructor Summary

Constructors

Constructor and Description
DndLinkHandler()

Method Summary

Modifier and Type	Method and Description
void	createCommands(List<SVGElementModel> sourceElements, SVGElementModel target, DndCommandFactory.DropGesture dropGesture) Creates the commands which represent the drag and drop operation
int	getKeyCode() Returns the key code associated with this handler
String	getMessage(List<SVGElementModel> sourceElements) Returns the text which appears in the ghost during a drag and drop operation
String	getOperationCssAttr() Returns the DOM attribute value which trigger the display of the proper icons in the drag ghost using a CSS rule
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.

Methods inherited from class org.vectomatic.svg.edit.client.command.dnd.DndHandlerBase

getSourceElementNames, isValidTarget

Methods inherited from class java.lang.Object

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

Constructor Detail

DndLinkHandler

public DndLinkHandler()

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

Overrides:

isValidSource in class DndHandlerBase

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.

getOperationCssAttr

public String getOperationCssAttr()

Description copied from interface: IDndHandler

Returns the DOM attribute value which trigger the display of the proper icons in the drag ghost using a CSS rule

Returns:

a DOM attribute value

getMessage

public String getMessage(List<SVGElementModel> sourceElements)

Description copied from interface: IDndHandler

Returns the text which appears in the ghost during a drag and drop operation

Parameters:

sourceElements - The elements being dragged

Returns:

getKeyCode

public int getKeyCode()

Description copied from interface: IDndHandler

Returns the key code associated with this handler

Specified by:

getKeyCode in interface IDndHandler

Overrides:

getKeyCode in class DndHandlerBase

Returns:

createCommands

public void createCommands(List<SVGElementModel> sourceElements,
                           SVGElementModel target,
                           DndCommandFactory.DropGesture dropGesture)

Description copied from interface: IDndHandler

Creates the commands which represent the drag and drop operation

Parameters:

sourceElements - The drag source elements

target - The drop target elements

dropGesture - The drop gesture