| Methods Summary |
|---|
| public void | dragEnter(java.awt.dnd.DropTargetDragEvent dtde)
TreeNode node = getNodeForEvent(dtde);
if (node.isLeaf()) {
dtde.rejectDrag();
}
else {
// start by supporting move operations
//dtde.acceptDrag(DnDConstants.ACTION_MOVE);
dtde.acceptDrag(dtde.getDropAction());
}
|
| public void | dragExit(java.awt.dnd.DropTargetEvent dte)
|
| public void | dragOver(java.awt.dnd.DropTargetDragEvent dtde)
TreeNode node = getNodeForEvent(dtde);
if (node.isLeaf()) {
dtde.rejectDrag();
}
else {
// start by supporting move operations
//dtde.acceptDrag(DnDConstants.ACTION_MOVE);
dtde.acceptDrag(dtde.getDropAction());
}
|
| public void | drop(java.awt.dnd.DropTargetDropEvent dtde)
Point pt = dtde.getLocation();
DropTargetContext dtc = dtde.getDropTargetContext();
JTree tree = (JTree)dtc.getComponent();
TreePath parentpath = tree.getClosestPathForLocation(pt.x, pt.y);
DefaultMutableTreeNode parent =
(DefaultMutableTreeNode)parentpath.getLastPathComponent();
if (parent.isLeaf()) {
dtde.rejectDrop();
return;
}
try {
Transferable tr = dtde.getTransferable();
DataFlavor[] flavors = tr.getTransferDataFlavors();
for (int i = 0; i < flavors.length; i++) {
if (tr.isDataFlavorSupported(flavors[i])) {
dtde.acceptDrop(dtde.getDropAction());
TreePath p = (TreePath)tr.getTransferData(flavors[i]);
DefaultMutableTreeNode node =
(DefaultMutableTreeNode)p.getLastPathComponent();
DefaultTreeModel model = (DefaultTreeModel)tree.getModel();
model.insertNodeInto(node, parent, 0);
dtde.dropComplete(true);
return;
}
}
dtde.rejectDrop();
} catch (Exception e) {
e.printStackTrace();
dtde.rejectDrop();
}
|
| public void | dropActionChanged(java.awt.dnd.DropTargetDragEvent dtde)
|
| private javax.swing.tree.TreeNode | getNodeForEvent(java.awt.dnd.DropTargetDragEvent dtde)
Point p = dtde.getLocation();
DropTargetContext dtc = dtde.getDropTargetContext();
JTree tree = (JTree)dtc.getComponent();
TreePath path = tree.getClosestPathForLocation(p.x, p.y);
return (TreeNode)path.getLastPathComponent();
|
