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