Package docking.widgets.tree.support

Interface GTreeDragNDropHandler

All Superinterfaces:

GTreeTransferHandler

All Known Implementing Classes:

DataTreeDragNDropHandler

public interface GTreeDragNDropHandler
extends GTreeTransferHandler

Method Summary

Modifier and Type	Method	Description
void	drop(GTreeNode destUserData, Transferable transferable, int dropAction)	Add the given transferable's data to the destination user data.
int	getSupportedDragActions()	Returns the supported Drag actions for this tree.
boolean	isDropSiteOk(GTreeNode destUserData, DataFlavor[] flavors, int dropAction)	Return true if the drop site is valid for the given target.
boolean	isStartDragOk(List<GTreeNode> dragUserData, int dragAction)	Return true if the dragUserData can be dragged.

Methods inherited from interface docking.widgets.tree.support.GTreeTransferHandler

getSupportedDataFlavors, getTransferData

Method Details

isStartDragOk

boolean isStartDragOk(List<GTreeNode> dragUserData,
 int dragAction)

Return true if the dragUserData can be dragged.

Parameters:

dragUserData - data where user is initiating the drag operation

dragAction - user action for the drag operation

getSupportedDragActions

int getSupportedDragActions()

Returns the supported Drag actions for this tree. For available actions see DnDConstants.

Returns:

the supported Drag actions.

isDropSiteOk

boolean isDropSiteOk(GTreeNode destUserData,
 DataFlavor[] flavors,
 int dropAction)

Return true if the drop site is valid for the given target.

Parameters:

destUserData - destination for node being dragged

flavors - flavor(s) being dragged

dropAction - user action for drop operation

drop

void drop(GTreeNode destUserData,
 Transferable transferable,
 int dropAction)

Add the given transferable's data to the destination user data.

Parameters:

destUserData - destination node for the data.

transferable - the transferable being dragged whose data will be dropped.

dropAction - user action for drop operation