content: /*
   * The MIT License (MIT)
   *
   * Copyright (c) 2011-2021 Broad Institute, Aiden Lab, Rice University, Baylor College of Medicine
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   *  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
   *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   *  THE SOFTWARE.
   */
  
  package juicebox.state;
  
  import juicebox.MainWindow;
  import org.xml.sax.ErrorHandler;
  import org.xml.sax.InputSource;
  import org.xml.sax.SAXParseException;
  
  import javax.swing.*;
  import javax.swing.filechooser.FileNameExtensionFilter;
  import javax.xml.parsers.DocumentBuilder;
  import javax.xml.parsers.DocumentBuilderFactory;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.nio.channels.FileChannel;
  
  
  /**
   * Created by Zulkifl on 7/23/2015.
   */
  public class ImportStateFileDialog extends JFileChooser {
  
      private static final long serialVersionUID = 9000019;
      private final File originalStates = new File("OriginalSavedStates.xml");
  
      public ImportStateFileDialog(File currentStates, MainWindow mainWindow) {
          super();
          loadFile(currentStates, mainWindow);
      }
  
      private static void copyFile(File sourceFile, File destFile) throws IOException {
          if (!destFile.exists()) {
              destFile.createNewFile();
          }
  
          FileChannel source = null;
          FileChannel destination = null;
  
          try {
              source = new FileInputStream(sourceFile).getChannel();
              destination = new FileOutputStream(destFile).getChannel();
              destination.transferFrom(source, 0, source.size());
          } finally {
              if (source != null) {
                  source.close();
              }
              if (destination != null) {
                  destination.close();
              }
          }
      }
  
      private void loadFile(File currentFile, MainWindow mainWindow) {
  
          FileNameExtensionFilter filter = new FileNameExtensionFilter(
                  "XML Files", "xml", "XML");
          setFileFilter(filter);
  
          int actionDialog = showOpenDialog(mainWindow);
          if (actionDialog == APPROVE_OPTION) {
              File importedFile = getSelectedFile();
              String path = importedFile.getAbsolutePath();
              mainWindow.updateNamesFromImport(path);
  
              try {
                  DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
                  factory.setValidating(false);
                  factory.setNamespaceAware(true);
                  DocumentBuilder builder = factory.newDocumentBuilder();
                  builder.setErrorHandler(new SimpleErrorHandler());
                  builder.parse(new InputSource(path));
                  copyFile(currentFile, originalStates);
                  copyFile(importedFile, currentFile);
                  JOptionPane.showMessageDialog(mainWindow, "Importing File:\n" + importedFile.getName(), "Opening",
                          JOptionPane.INFORMATION_MESSAGE);
                  JOptionPane.showMessageDialog(mainWindow, "Previous states have been saved under file:\n" + originalStates.getName(), "Creating Backup",
                          JOptionPane.INFORMATION_MESSAGE);
              } catch (Exception e) {
                  JOptionPane.showMessageDialog(mainWindow, "Error while importing file:\n" + e.getMessage(), "Error",
                          JOptionPane.ERROR_MESSAGE);
                  e.printStackTrace();
              }
  
              System.out.println("Opening File: " + importedFile.getName());
  
          }
      }
  
      private static class SimpleErrorHandler implements ErrorHandler {
          public void warning(SAXParseException e) {
              System.out.println(e.getMessage());
          }
  
          public void error(SAXParseException e) {
              System.out.println(e.getMessage());
          }
  
          public void fatalError(SAXParseException e) {
              System.out.println(e.getMessage());
          }
      }
  
  
  }
  
  