/*
* DropTargetAdapter.
*
* JavaZOOM : jlgui@javazoom.net
* http://www.javazoom.net
*
*-----------------------------------------------------------------------
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*----------------------------------------------------------------------
*/
package plugins.audioPlayer.javazoom.jlgui.player.amp.skin;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.dnd.DnDConstants;
import java.awt.dnd.DropTargetDragEvent;
import java.awt.dnd.DropTargetDropEvent;
import java.awt.dnd.DropTargetEvent;
import java.awt.dnd.DropTargetListener;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class DropTargetAdapter implements DropTargetListener
{
private static Log log = LogFactory.getLog(DropTargetAdapter.class);
public DropTargetAdapter()
{
super();
}
public void dragEnter(DropTargetDragEvent e)
{
if (isDragOk(e) == false)
{
e.rejectDrag();
}
}
public void dragOver(DropTargetDragEvent e)
{
if (isDragOk(e) == false)
{
e.rejectDrag();
}
}
public void dropActionChanged(DropTargetDragEvent e)
{
if (isDragOk(e) == false)
{
e.rejectDrag();
}
}
public void dragExit(DropTargetEvent dte)
{
}
protected boolean isDragOk(DropTargetDragEvent e)
{
// Check DataFlavor
DataFlavor[] dfs = e.getCurrentDataFlavors();
DataFlavor tdf = null;
for (int i = 0; i < dfs.length; i++)
{
if (DataFlavor.javaFileListFlavor.equals(dfs[i]))
{
tdf = dfs[i];
break;
}
else if (DataFlavor.stringFlavor.equals(dfs[i]))
{
tdf = dfs[i];
break;
}
}
// Only file list allowed.
if (tdf != null)
{
// Only DnD COPY allowed.
if ((e.getSourceActions() & DnDConstants.ACTION_COPY) != 0)
{
return true;
}
else return false;
}
else return false;
}
public void drop(DropTargetDropEvent e)
{
// Check DataFlavor
DataFlavor[] dfs = e.getCurrentDataFlavors();
DataFlavor tdf = null;
for (int i = 0; i < dfs.length; i++)
{
if (DataFlavor.javaFileListFlavor.equals(dfs[i]))
{
tdf = dfs[i];
break;
}
else if (DataFlavor.stringFlavor.equals(dfs[i]))
{
tdf = dfs[i];
break;
}
}
// Data Flavor available ?
if (tdf != null)
{
// Accept COPY DnD only.
if ((e.getSourceActions() & DnDConstants.ACTION_COPY) != 0)
{
e.acceptDrop(DnDConstants.ACTION_COPY);
}
else return;
try
{
Transferable t = e.getTransferable();
Object data = t.getTransferData(tdf);
processDrop(data);
}
catch (IOException ioe)
{
log.info("Drop error", ioe);
e.dropComplete(false);
return;
}
catch (UnsupportedFlavorException ufe)
{
log.info("Drop error", ufe);
e.dropComplete(false);
return;
}
catch (Exception ex)
{
log.info("Drop error", ex);
e.dropComplete(false);
return;
}
e.dropComplete(true);
}
}
public void processDrop(Object data)
{
}
}