fileexportjbpmprocessxml.java

用JGraph编的软件

/*
 *
 *
 * Copyright (C) 2003-2004 David Benson
 *
 * JGpd 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.
 *
 * JGpd 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 JGpd; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package org.jgpd.io.jbpm.io;

import java.awt.event.ActionEvent;
import javax.swing.filechooser.FileFilter;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.MalformedURLException;

import org.jgpd.io.jbpm.ModelExportJBpm;
import org.jgraph.GPGraphpad;
import org.jgraph.pad.actions.AbstractActionFile;
import org.jgraph.pad.resources.Translator;
import org.jgraph.pad.GPDocument;
import org.jgraph.pad.GPGraph;

public class FileExportJBPMProcessXML
    extends AbstractActionFile {

  /* File type to pass to ImageIO. Default is "xml". */
  protected transient String fileType = "xml";

  /**
   * Constructor for FileExportJBPM.
   * @param graphpad
   */
  public FileExportJBPMProcessXML(GPGraphpad graphpad) {
    this(graphpad, "xml");
  }

  public FileExportJBPMProcessXML(GPGraphpad graphpad, String fileType) {
    super(graphpad);
    this.fileType = fileType;
  }

  /**
   * @see java.awt.event.ActionListener#actionPerformed(ActionEvent)
   */
  public void actionPerformed(ActionEvent e) {
    GPDocument doc = getCurrentDocument();
    GPGraph gpGraph = doc.getGraph();
    URL file;
    String jbpm_xml = "processdefinition";

    // show the file chooser
    JFileChooser chooser = new JFileChooser();
    chooser.setDialogTitle(Translator.getString("FileSaveAsLabel"));

    int result = chooser.showSaveDialog(graphpad);
    if (result == JFileChooser.CANCEL_OPTION) {
      return;
    }

    // get the file format
    FileFilter fileFilter = chooser.getFileFilter();

    try {
      file = chooser.getSelectedFile().toURL();

      if (file.toString().indexOf(".") < 0) {
        file = new URL(file + ".xml");
      }

    }
    catch (MalformedURLException eurl) {
      JOptionPane.showMessageDialog(
          graphpad,
          eurl.getLocalizedMessage(),
          Translator.getString("Error"),
          JOptionPane.ERROR_MESSAGE);
      return;
    }

    try {
      if (getCurrentDocument().getExportModel()instanceof ModelExportJBpm) {
        writeFile( (ModelExportJBpm) (getCurrentDocument().getExportModel()),
                  gpGraph,
                  file);
      }
    }
    catch (Exception ex) {
      JOptionPane.showMessageDialog(
          graphpad,
          ex.getLocalizedMessage(),
          Translator.getString("Error"),
          JOptionPane.ERROR_MESSAGE);
    }
  }

  private void writeFile(ModelExportJBpm model,
                         GPGraph graph,
                         URL file) throws Exception {
    OutputStream out = null;
    out = new FileOutputStream(file.getFile());
    out = new BufferedOutputStream(out);
    out.write( (model.exportModelXML(graph)).getBytes());
    out.flush();
    out.close();

  }
}