001/*
002 * Copyright (c) 2004-2007 by Michael Connor. All Rights Reserved.
003 *
004 * Redistribution and use in source and binary forms, with or without
005 * modification, are permitted provided that the following conditions are met:
006 *
007 *  o Redistributions of source code must retain the above copyright notice,
008 *    this list of conditions and the following disclaimer.
009 *
010 *  o Redistributions in binary form must reproduce the above copyright notice,
011 *    this list of conditions and the following disclaimer in the documentation
012 *    and/or other materials provided with the distribution.
013 *
014 *  o Neither the name of FormLayoutBuilder or Michael Connor nor the names of
015 *    its contributors may be used to endorse or promote products derived
016 *    from this software without specific prior written permission.
017 *
018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
019 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
020 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
021 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
022 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
023 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
024 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
025 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
026 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
027 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
028 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029 */
030/*
031 * TransferableWrapper.java
032 *
033 * Created on October 18, 2004, 6:05 PM
034 */
035
036package org.mlc.swing.layout;
037
038import java.awt.datatransfer.DataFlavor;
039
040/**
041 * A wrapper for transferring data using drag and drop.
042 * @author Michael Connor
043 * @version $Id$
044 * @since Ptolemy II 8.0
045 */
046public class TransferableWrapper implements java.awt.datatransfer.Transferable {
047    Object dragObject;
048
049    /** Instantiate a TransferableWrapper.
050     *  @param dragObject The drag object
051     */
052    public TransferableWrapper(Object dragObject) {
053        this.dragObject = dragObject;
054    }
055
056    /** Get the transfer data for a flavor.
057     *  @param flavor the flavor
058     *  @return the transfer data.
059     */
060    @Override
061    public synchronized Object getTransferData(DataFlavor flavor) {
062        return dragObject;
063    }
064
065    /** Return true if the data flavor is supported.
066     *  @param flavor the flavor to be checked.
067     *  @return true if the data flavor is supported.
068     */
069    @Override
070    public boolean isDataFlavorSupported(DataFlavor flavor) {
071        return flavor.getMimeType()
072                .equals(DataFlavor.javaJVMLocalObjectMimeType);
073    }
074
075    /** Get the transfer data flavors.
076     *  @return the transfer data flavors.
077     */
078    @Override
079    public synchronized DataFlavor[] getTransferDataFlavors() {
080        try {
081            return new DataFlavor[] {
082                    new DataFlavor(DataFlavor.javaJVMLocalObjectMimeType) };
083        } catch (ClassNotFoundException cnfe) {
084            throw new RuntimeException("Unable to load DataFlavor "
085                    + DataFlavor.javaJVMLocalObjectMimeType, cnfe);
086        }
087    }
088}