TreeDragSourcepublic class TreeDragSource extends Object implements DragGestureListener, DragSourceListener
| Fields Summary |
|---|
| DragSource | source | | DragGestureRecognizer | recognizer | | TransferableTreeNode | transferable | | DefaultMutableTreeNode | oldNode | | JTree | sourceTree |
| Constructors Summary |
|---|
public TreeDragSource(JTree tree, int actions)
sourceTree = tree;
source = new DragSource();
recognizer = source.createDefaultDragGestureRecognizer(
sourceTree, actions, this);
|
| Methods Summary |
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| public void | dragDropEnd(java.awt.dnd.DragSourceDropEvent dsde)
/*
* to support move or copy, we have to check which occurred:
*/
System.out.println("Drop Action: " + dsde.getDropAction());
if (dsde.getDropSuccess() &&
(dsde.getDropAction() == DnDConstants.ACTION_MOVE)) {
((DefaultTreeModel)sourceTree.getModel()).removeNodeFromParent(oldNode);
}
/*
* to support move only...
if (dsde.getDropSuccess()) {
((DefaultTreeModel)sourceTree.getModel()).removeNodeFromParent(oldNode);
}
*/
| | public void | dragEnter(java.awt.dnd.DragSourceDragEvent dsde)
| | public void | dragExit(java.awt.dnd.DragSourceEvent dse)
| | public void | dragGestureRecognized(java.awt.dnd.DragGestureEvent dge)
TreePath path = sourceTree.getSelectionPath();
if ((path == null) || (path.getPathCount() <= 1)) {
// We can't move the root node or an empty selection
return;
}
oldNode = (DefaultMutableTreeNode)path.getLastPathComponent();
transferable = new TransferableTreeNode(path);
source.startDrag(dge, DragSource.DefaultMoveNoDrop, transferable, this);
// If you support dropping the node anywhere, you should probably
// start with a valid move cursor:
//source.startDrag(dge, DragSource.DefaultMoveDrop, transferable, this);
| | public void | dragOver(java.awt.dnd.DragSourceDragEvent dsde)
| | public void | dropActionChanged(java.awt.dnd.DragSourceDragEvent dsde)
System.out.println("Action: " + dsde.getDropAction());
System.out.println("Target Action: " + dsde.getTargetActions());
System.out.println("User Action: " + dsde.getUserAction());
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