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/*
 * @(#)SimpleTransferHandler.java   beta8   2006/04/23
 *
 * Copyright (C) 2008    Adam King (adamjking@optusnet.com.au)
 *
 * This application is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This application 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this application; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */


package org.midibox.utils.gui;

import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;

import javax.swing.JComponent;
import javax.swing.TransferHandler;

public class SimpleTransferHandler extends TransferHandler {

    protected DataFlavor[] supportedDataFlavors;

    protected boolean justImported = false;

    protected boolean justExported = false;

    protected boolean dropOnSelf = false;

    public int getSourceActions(JComponent c) {
        return COPY;
    }

    public boolean canImport(JComponent c, DataFlavor[] flavors) {
        try {
            if (justExported && !dropOnSelf) {
                return false;
            } else {
                for (int f = 0; f < flavors.length; f++) {
                    if (hasFlavor(supportedDataFlavors, flavors[f])) {
                        return true;
                    }
                }
                return false;
            }
        } catch (Exception e) {
            return false;
        }
    }

    public void setDropOnSelf(boolean dropOnSelf) {
        this.dropOnSelf = dropOnSelf;
    }

    protected boolean hasFlavor(DataFlavor[] flavors, DataFlavor flavor) {
        for (int i = 0; i < flavors.length; i++) {
            if (flavor.equals(flavors[i])) {
                return true;
            }
        }
        return false;
    }

    protected void exportDone(JComponent c, Transferable data, int action) {
        justExported = false;
    }
}