y.view.hierarchy
Class HierarchyTreeTransferHandler

java.lang.Object
  javax.swing.TransferHandler
      y.view.hierarchy.HierarchyTreeTransferHandler

All Implemented Interfaces:

Serializable

public class HierarchyTreeTransferHandler
extends TransferHandler

A transfer handler for HierarchyJTree that allows to reorganize the hierarchical group structure by a drag and drop gesture on the tree elements. The drag and drop mechanism will allow to drag selected elements and drop them on another tree element. If the tree element represents the root graph, a group or a folder node, then the dropped items will be re-parented to that item. If the tree element represents a regular node, the dropped items will be re-parented to the parent of that regular node.

Usage:

 HierarchyJTree tree = new HierarchyJTree(hierarchyManager);
 tree.setDragEnabled(true);
 tree.setTransferHandler(new HierarchyTreeTransferHandler(hierarchyManager));
 

See Also:

Serialized Form

Field Summary

Fields inherited from class javax.swing.TransferHandler

COPY, COPY_OR_MOVE, MOVE, NONE

Constructor Summary

HierarchyTreeTransferHandler(HierarchyManager manager)
Create a new instance of this class.

Method Summary

boolean	canImport(JComponent c, DataFlavor[] flavors)
protected Transferable	createTransferable(JComponent c)
int	getSourceActions(JComponent c) Returns TransferHandler.MOVE.
boolean	importData(JComponent c, Transferable t)

Methods inherited from class javax.swing.TransferHandler

exportAsDrag, exportDone, exportToClipboard, getCopyAction, getCutAction, getPasteAction, getVisualRepresentation

Methods inherited from class java.lang.Object

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

Constructor Detail

HierarchyTreeTransferHandler

public HierarchyTreeTransferHandler(HierarchyManager manager)

Create a new instance of this class.

Parameters:

manager - HierarchyManager instance used to organize the nested graph hierarchy that can be manipulated by this class.

Method Detail

createTransferable

protected Transferable createTransferable(JComponent c)

Overrides:

createTransferable in class TransferHandler

getSourceActions

public int getSourceActions(JComponent c)

Returns TransferHandler.MOVE.

Overrides:

getSourceActions in class TransferHandler

importData

public boolean importData(JComponent c,
                          Transferable t)

Overrides:

importData in class TransferHandler

canImport

public boolean canImport(JComponent c,
                         DataFlavor[] flavors)

Overrides:

canImport in class TransferHandler