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/*
* Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.awt.Button;
import java.awt.Color;
import java.awt.Toolkit;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.dnd.DnDConstants;
import java.awt.dnd.DragGestureEvent;
import java.awt.dnd.DragGestureListener;
import java.awt.dnd.DragSource;
import java.awt.dnd.DragSourceDragEvent;
import java.awt.dnd.DragSourceDropEvent;
import java.awt.dnd.DragSourceEvent;
import java.awt.dnd.DragSourceListener;
import java.awt.dnd.InvalidDnDOperationException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
class DnDSource extends Button implements Transferable,
DragGestureListener,
DragSourceListener {
private DataFlavor m_df;
private transient int m_dropAction;
private ByteArrayInputStream m_data = null;
DnDSource(String label) {
super(label);
setBackground(Color.yellow);
setForeground(Color.blue);
setSize(200, 120);
try {
m_df = new DataFlavor("text/html; Class=" + InputStream.class.getName() + "; charset=UTF-8");
} catch (Exception e) {
e.printStackTrace();
}
DragSource dragSource = new DragSource();
dragSource.createDefaultDragGestureRecognizer(
this,
DnDConstants.ACTION_COPY_OR_MOVE,
this
);
dragSource.addDragSourceListener(this);
String dir = System.getProperty("test.src", ".");
try {
m_data = new ByteArrayInputStream(Files.readAllBytes(
Paths.get(dir, "DnDSource.html")));
m_data.mark(m_data.available());
addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent ae){
Toolkit.getDefaultToolkit().getSystemClipboard()
.setContents( DnDSource.this, null);
}
}
);
} catch (Exception e) {
e.printStackTrace();
}
}
public void dragGestureRecognized(DragGestureEvent dge) {
System.err.println("starting Drag");
try {
dge.startDrag(null, this, this);
} catch (InvalidDnDOperationException e) {
e.printStackTrace();
}
}
public void dragEnter(DragSourceDragEvent dsde) {
System.err.println("[Source] dragEnter");
}
public void dragOver(DragSourceDragEvent dsde) {
System.err.println("[Source] dragOver");
m_dropAction = dsde.getDropAction();
System.out.println("m_dropAction = " + m_dropAction);
}
public void dragExit(DragSourceEvent dsde) {
System.err.println("[Source] dragExit");
}
public void dragDropEnd(DragSourceDropEvent dsde) {
System.err.println("[Source] dragDropEnd");
}
public void dropActionChanged(DragSourceDragEvent dsde) {
System.err.println("[Source] dropActionChanged");
m_dropAction = dsde.getDropAction();
System.out.println("m_dropAction = " + m_dropAction);
}
public DataFlavor[] getTransferDataFlavors() {
return new DataFlavor[] {m_df};
}
public boolean isDataFlavorSupported(DataFlavor sdf) {
System.err.println("[Source] isDataFlavorSupported" + m_df.equals(sdf));
return m_df.equals(sdf);
}
public Object getTransferData(DataFlavor tdf) throws UnsupportedFlavorException {
if (!m_df.equals(tdf)) {
throw new UnsupportedFlavorException(tdf);
}
System.err.println("[Source] Ok");
m_data.reset();
return m_data;
}
}
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