/*

  * Copyright (c) 2003-2008, by Henrik Arro and Contributors

  *

  * This file is part of JSeq, a tool to automatically create

  * sequence diagrams by tracing program execution.

  *

  * See <http://jseq.sourceforge.net> for more information.

  *

  * JSeq 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 3 of

  * the License, or (at your option) any later version.

  *

  * JSeq 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 JSeq. If not, see <http://www.gnu.org/licenses/>.

  */

 package th.co.edge.jseq.sdedit;

 import java.io.File;

 import java.io.IOException;

 import net.sf.sdedit.Main;

 import th.co.edge.jseq.ActivationList;

 import th.co.edge.jseq.Diagram;

 /**

  * An <code>SdeditPngDiagram</code> is a <code>Diagram</code> that can be

  * used to generate sequence diagrams in PNG format, using the <a

  * href="http://sdedit.sourceforge.net/" target="new">Quick Sequence Diagram

  * Editor</a> to create the image.

  *

  * @author jacek.ratzinger

  */

 public class SdeditPngDiagram implements Diagram {

     private static final String DEFAULT_PNG_FILE_EXTENSION = ".png";

     private final SdeditTextDiagram textDiagram;

     /**

      * Creates a new <code>SdeditPngDiagram</code>, using the given

      * <code>ActivationList</code> as the basis for the sequence diagram.

      *

      * @param activationList

      *            a list of root <code>Activation</code>s to use when

      *            generating the sequence diagram

      */

     public SdeditPngDiagram(ActivationList activationList) {

         this.textDiagram = new SdeditTextDiagram(activationList);

     }

     /**

      * Creates a sequence diagram and writes it to file as a PNG image.

      *

      * @param pngFile

      *            the <code>File</code> to write to

      *

      * @throws IOException

      *             if something went wrong when creating or saving the diagram

      */

     @Override

     public void save(File pngFile) throws IOException {

         String outputFilePrefix =

                 pngFile.getName().substring(

                         0,

                         pngFile.getName().length() -

                                 DEFAULT_PNG_FILE_EXTENSION.length());

         File tempTextFile =

                 new File(pngFile.getParentFile(), outputFilePrefix + ".txt");

         textDiagram.save(tempTextFile);

         String[] sdeditArgs =

                 { "-t", "png", "-o", pngFile.getAbsolutePath(),

                         tempTextFile.getAbsolutePath() };

         try {

             Main.main(sdeditArgs);

         } catch (Exception e) {

             throw new IOException(e);

         }

     }

 }