ExportMatrixAction.java example

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universal-java-matrix-package-master
/*
 * Copyright (C) 2008-2015 by Holger Arndt
 *
 * This file is part of the Universal Java Matrix Package (UJMP).
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership and licensing.
 *
 * UJMP 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
 * of the License, or (at your option) any later version.
 *
 * UJMP 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 UJMP; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 */

package org.ujmp.gui.actions;

import java.awt.event.KeyEvent;
import java.io.File;

import javax.swing.Action;
import javax.swing.JComponent;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import javax.swing.KeyStroke;
import javax.swing.filechooser.FileFilter;

import org.ujmp.core.filematrix.FileFormat;
import org.ujmp.core.interfaces.GUIObject;
import org.ujmp.core.util.io.UJMPFileFilter;
import org.ujmp.gui.MatrixGUIObject;

public class ExportMatrixAction extends AbstractObjectAction {
	private static final long serialVersionUID = -212812956173346428L;

	public ExportMatrixAction(JComponent c, GUIObject o) {
		super(c, o);
		putValue(Action.NAME, "Export...");
		putValue(Action.SHORT_DESCRIPTION, "Export this Matrix");
		putValue(Action.ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_E, KeyEvent.CTRL_DOWN_MASK));
	}

	public Object call() {
		try {
			File file = null;
			JFileChooser chooser = new JFileChooser();

			for (FileFormat f : FileFormat.values()) {
				chooser.addChoosableFileFilter(f.getFileFilter());
			}

			chooser.setFileFilter(FileFormat.CSV.getFileFilter());
			chooser.setAcceptAllFileFilterUsed(false);
			chooser.setDialogTitle("Export");

			int returnVal = chooser.showSaveDialog(null);
			if (returnVal == JFileChooser.APPROVE_OPTION) {
				file = chooser.getSelectedFile();

				FileFilter filter = chooser.getFileFilter();

				String suffix = ((UJMPFileFilter) filter).getSuffix()[0];
				if (!file.getAbsolutePath().toLowerCase().endsWith(suffix)) {
					file = new File(file.getAbsolutePath() + "." + suffix);
				}
			}

			if (file == null)
				return null;

			if (file.exists()) {
				int result = JOptionPane.showConfirmDialog(null, "File already exists. Overwrite?", "Warning",
						JOptionPane.YES_NO_OPTION);
				if (result != JOptionPane.YES_OPTION)
					return null;
			}

			GUIObject o = getGUIObject();

			if (o instanceof MatrixGUIObject) {
				MatrixGUIObject m = (MatrixGUIObject) o;
				try {
					m.getMatrix().exportTo().file(file);
				} catch (Exception e) {
				}
			}

			return null;
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

}