denutils.java

JRemoteControl is a simple Java&#8482 driven bluetooth remote control.It allows you to initiate virt

/*
 * JRemCntl - Copyright (C) 2007 Filippo Di Vattimo <[e-mail]>
 * See COPYING
 */

package fildiv.jremcntl.server.gui.app;

import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;

import fildiv.jremcntl.server.gui.model.JRemCommandDoc;
import fildiv.jremcntl.server.gui.model.JRemConfigDoc;
import fildiv.jremcntl.server.gui.model.JRemContextDoc;
import fildiv.jremcntl.server.gui.util.swing.JTreeTransferHandler;

public class DeNUtils {

	protected static void exportDone(JTree tree, JRemConfigDoc configDoc,
			Object draggedNode, Object targetNode) {
		
		if (!validateExportAction(tree, targetNode))
			return;

		DefaultMutableTreeNode nodeSource = (DefaultMutableTreeNode) draggedNode;
		DefaultMutableTreeNode nodeDest = (DefaultMutableTreeNode) targetNode;

		Object objSource = nodeSource.getUserObject();
		Object objDest = nodeDest.getUserObject();

		if (objSource instanceof JRemContextDoc) {

			JRemContextDoc ctxSource = (JRemContextDoc) objSource;

			if (objDest instanceof JRemContextDoc) {

				JRemContextDoc ctxDest = (JRemContextDoc) objDest;
				configDoc.moveContextAfter(ctxSource, ctxDest);
			} else {
				assert objDest instanceof JRemConfigDoc;

				configDoc.moveContextAtTop(ctxSource);
			}

		} else if (objSource instanceof JRemCommandDoc) {

			JRemCommandDoc cmdSource = (JRemCommandDoc) objSource;

			JRemContextDoc context = null;

			if (objDest instanceof JRemCommandDoc) {

				JRemCommandDoc cmdDest = (JRemCommandDoc) objDest;
				context = (JRemContextDoc) cmdDest.getContext();

				context.moveCommandAfter(cmdSource, cmdDest);

			} else {
				assert objDest instanceof JRemContextDoc;

				context = (JRemContextDoc) objDest;
				context.moveCommandAtTop(cmdSource);
			}

		}

	}

	protected static boolean validateExportAction(JTree tree, Object nodeOver) {

		JTreeTransferHandler handler = (JTreeTransferHandler) tree
				.getTransferHandler();

		Object nodeSource = ((DefaultMutableTreeNode) handler.getDraggedNode())
				.getUserObject();
		Object nodeDest = ((DefaultMutableTreeNode) nodeOver).getUserObject();

		if (nodeSource instanceof JRemCommandDoc)
			return (nodeDest instanceof JRemContextDoc)
					|| (nodeDest instanceof JRemCommandDoc);

		if (nodeSource instanceof JRemContextDoc)
			return (nodeDest instanceof JRemContextDoc)
					|| (nodeDest instanceof JRemConfigDoc);

		return false;
	}

	public static boolean canExpandPath(JTree tree, Object nodeOver) {
		
		JTreeTransferHandler handler = (JTreeTransferHandler) tree
				.getTransferHandler();

		Object nodeSource = ((DefaultMutableTreeNode) handler.getDraggedNode())
				.getUserObject();
		
		if (nodeSource instanceof JRemContextDoc)
			return false;
		
		return true;
	}

}