/*
* Beryl - A web platform based on XML, XSLT and Java
* This file is part of the Beryl XML GUI
*
* Copyright (C) 2004 Wenzel Jakob <wazlaf@tigris.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-3107 USA
*/
package org.beryl.gui;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.dnd.DropTargetDragEvent;
import java.awt.dnd.DropTargetDropEvent;
import java.awt.dnd.DropTargetEvent;
import java.awt.dnd.DropTargetListener;
/**
* Internally used class to facilitate the use of DnD
*/
public class DropHandler implements DropTargetListener {
private Widget widget;
private String name;
private DataFlavor[] flavors = null;
private GUIEventListener listener = null;
public DropHandler(Widget widget, GUIEventListener listener, String name, DataFlavor[] flavors) {
this.widget = widget;
this.listener = listener;
this.flavors = flavors;
this.name = name;
}
public void dragEnter(DropTargetDragEvent e) {
}
public void dragExit(DropTargetEvent e) {
}
public void dragOver(DropTargetDragEvent e) {
}
public void drop(DropTargetDropEvent e) {
Transferable tr = e.getTransferable();
DataFlavor[] trFlavors = tr.getTransferDataFlavors();
try {
for (int i = 0; i < trFlavors.length; i++) {
for (int o = 0; o < flavors.length; o++) {
if (trFlavors[i].match(flavors[o])) {
e.acceptDrop(e.getDropAction());
Object data = tr.getTransferData(trFlavors[i]);
GUIEvent event = new GUIEvent(widget, name, e, data);
listener.eventOccured(event);
e.dropComplete(true);
return;
}
}
}
} catch (Exception ex) {
e.dropComplete(false);
throw new RuntimeException(ex);
}
e.rejectDrop();
}
public void dropActionChanged(DropTargetDragEvent e) {
}
};