content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.chemistry.opencmis.workbench.swing;
  
  import java.awt.Component;
  import java.awt.Dimension;
  import java.awt.HeadlessException;
  import java.awt.Toolkit;
  import java.io.File;
  import java.util.prefs.Preferences;
  
  import javax.swing.JFileChooser;
  
  public class WorkbenchFileChooser extends JFileChooser {
  
      private static final long serialVersionUID = 1L;
  
      private static final String PREFS_DIRECTORY = "directory";
  
      private final Preferences prefs = Preferences.userNodeForPackage(this.getClass());
  
      public WorkbenchFileChooser() {
          super();
          load();
  
          Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
          setPreferredSize(new Dimension((int) (screenSize.getWidth() / 2), (int) (screenSize.getHeight() / 2)));
      }
  
      @Override
      public int showDialog(Component parent, String approveButtonText) throws HeadlessException {
          int state = super.showDialog(parent, approveButtonText);
  
          if (state == JFileChooser.APPROVE_OPTION) {
              save();
          }
  
          return state;
      }
  
      private synchronized void load() {
          String fileChooserDirectory = prefs.get(PREFS_DIRECTORY, null);
          if (fileChooserDirectory != null) {
              setCurrentDirectory(new File(fileChooserDirectory));
          }
      }
  
      private synchronized void save() {
          File selectedFile = getSelectedFile();
          if (selectedFile != null) {
              prefs.put(PREFS_DIRECTORY, selectedFile.getParent());
          }
      }
  }
  