@Override
public boolean importData(TransferSupport support) {
if (!isDataFlavorValid(support)) return false;
DropLocation dl = support.getDropLocation();
if (!(dl instanceof JTree.DropLocation)) return false;
dropLocation = (JTree.DropLocation) dl;
Transferable transferable = support.getTransferable();
if (transferable.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
try {
LayerTreeModel model = layersTree.getLayerModel();
List<?> files = (List<?>) transferable.getTransferData(DataFlavor.javaFileListFlavor);
int i = 0;
for (Object o : files) {
if (o instanceof File) {
File file = (File) o;
URL url = file.toURI().toURL();
ILayerDefinition definition =
new LayerDefinition(file.getName(), url, null, Icons.file.getURL(), true, false);
INode node = LayerNode.createFromLayerDefinition(definition);
addNodeToTree(dropLocation, model, node, false, i++);
}
}
layersTree.getUI().relayout();
dropLocation = null;
} catch (Exception e) {
return false;
}
}
return true;
}
@Override
protected void exportDone(JComponent source, Transferable data, int action) {
if (source == null
|| dropLocation == null
|| data == null
|| !(data instanceof TreeTransferable)) return;
TreeTransferable t = (TreeTransferable) data;
LayerTreeModel model = layersTree.getLayerModel();
Boolean moveIntoFolders = null;
int i = 0;
for (TreePath path : t.getPaths()) {
if (source == layersTree) {
INode node = (INode) path.getLastPathComponent();
addNodeToTree(dropLocation, model, node, true, i++);
} else if (source == datasetTree) {
DefaultMutableTreeNode dmtn = (DefaultMutableTreeNode) path.getLastPathComponent();
if (dmtn != null && dmtn.getUserObject() instanceof ILayerDefinition) {
if (moveIntoFolders == null) {
String message =
"Would you like to include the folder hierarchy with the dragged layers?";
int result =
JOptionPane.showConfirmDialog(
layersTree,
message,
"Include folders",
JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE);
moveIntoFolders = result == JOptionPane.YES_OPTION;
}
ILayerDefinition definition = (ILayerDefinition) dmtn.getUserObject();
if (moveIntoFolders) {
layersTree.getLayerModel().addLayer(definition, path.getPath());
} else {
INode node = LayerNode.createFromLayerDefinition(definition);
addNodeToTree(dropLocation, model, node, false, i++);
}
Rectangle bounds = datasetTree.getPathBounds(path);
if (bounds != null) datasetTree.repaint(bounds);
}
}
}
layersTree.getUI().relayout();
dropLocation = null;
}