Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.

 *

 * This program 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.

 *

 * This program 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 this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.gui.beans.swing;

import java.awt.Component;

import java.awt.HeadlessException;

import java.io.File;

import java.util.Hashtable;

import javax.swing.filechooser.FileSystemView;

/**

 * 

 * JFileChooser.java

 * <p>JFileChooser that tracks the last visited directory for a given ID. It allows you to

 * open the JFileChooser in the same directory where you were the last time you open a file

 * in the file system.<br>

 * </p>

 * <p>

 * It needs to specify a string defining the JFileChooser ID in order to know what kind of 

 * files you are going to open. For example after creating a JFileChooser by doing this:<br>

 * <b><code>new JFileChooser("TEMPLATES_FILECHOOSER", defaultDirectory);</code></b><br> each time

 * you create another JFileChooser anywhere giving the same ID, it will point directly to

 * the last directory where you opened a file using this JFileChooser with an equal ID.

 * </p>

 * 

 * 

 * @author jaume dominguez faus - jaume.dominguez@iver.es Dec 5, 2007

 *

 */

public class JFileChooser extends javax.swing.JFileChooser {

        private static final long serialVersionUID = -2419775752576400974L;

        private static Hashtable<String, File> jfcLastPaths = new Hashtable<String, File>();

        private String fileChooserID;

        /**

         * Creates a new JFileChooser with the remind last path feature. 

         * @param fileChooserID, the id that distinguishes the wanted files (i.e. "TEMPLATES_FILECHOOSER")

         * @param defaultDirectory, the default directory to go for the first time. It allows null, which

         *        means the user's home directory. 

         */

        public JFileChooser(String fileChooserID, File defaultDirectory) {

                super();

                if (fileChooserID == null) 

                        throw new IllegalArgumentException("JFileChooser's ID cannot be null");

                this.fileChooserID = fileChooserID;

                setCurrentDirectory(getLastPath(fileChooserID, defaultDirectory));

//                if (defaultDirectory == null)

//                        defaultDirectory = new File(System.getProperty("user.home"));

//                File currentDirectory;

//                if (jfcLastPaths.get(fileChooserID) != null)

//                        currentDirectory = new File(jfcLastPaths.get(fileChooserID));

//                else

//                        currentDirectory = defaultDirectory;

//                setCurrentDirectory(currentDirectory);

//                if (defaultDirectory != null)

//                        jfcLastPaths.put(fileChooserID, currentDirectory.getAbsolutePath());

        }

        /**

         * Returns the Last Path for this fileChooserID

         * @param fileChooserID, the id that distinguishes the wanted files (i.e. "TEMPLATES_FILECHOOSER")

         * @param defaultDirectory, the default directory to go for the first time. It allows null, which

         *        means the user's home directory.

         * @return

         */

        static public File getLastPath(String fileChooserID, File defaultDirectory) {

                File path = jfcLastPaths.get(fileChooserID);

                if (path != null)

                        return path;

                if (defaultDirectory != null)

                        return defaultDirectory;

                return FileSystemView.getFileSystemView().getDefaultDirectory();

        }

        /**

         * Save the Last Path for this fileChooserID

         * @param fileChooserID

         * @param path

         */

        static public void setLastPath(String fileChooserID, File path) {

                jfcLastPaths.put(fileChooserID, path);

        }        

        /**

         * Creates a new JFileChooser with the remind last path feature. 

         * @param fileChooserID, the id that distinguishes the wanted files (i.e. "TEMPLATES_FILECHOOSER")

         * @param defaultDirectory, the default directory to go for the first time. It allows null, which

         *        means the user's home directory. 

         */

        public JFileChooser(String fileChooserID, String defaultDirectory) {

                this(fileChooserID, defaultDirectory!=null ? new File(defaultDirectory) : null);

        }

    /**

     * Constructs a <code>JFileChooser</code> using the given

     * <code>FileSystemView</code>.

     */

    public JFileChooser(String fileChooserID, FileSystemView fsv) {

        this(fileChooserID, (File) null, fsv);

    }

    /**

     * Constructs a <code>JFileChooser</code> using the given current directory

     * and <code>FileSystemView</code>.

     */

    public JFileChooser(String fileChooserID, File defaultDirectory, FileSystemView fsv) {

            this(fileChooserID, defaultDirectory);

                setup(fsv);

    }

    /**

     * Constructs a <code>JFileChooser</code> using the given current directory

     * path and <code>FileSystemView</code>.

     */

    public JFileChooser(String fileChooserID, String defaultDirectoryPath, FileSystemView fsv) {

        this(fileChooserID, new File(defaultDirectoryPath), fsv);

                }

        @Override

        public int showDialog(Component parent, String approveButtonText) throws HeadlessException {

                int response = super.showDialog(parent, approveButtonText);

                setLastPath(fileChooserID, getCurrentDirectory());

            return response;

    }

/* with this version it only reminds when a file was choosen and accepted (ok button clicked)

     @Override

    public int showDialog(Component parent, String approveButtonText)

                    throws HeadlessException {

            int response = super.showDialog(parent, approveButtonText);

            if (response == javax.swing.JFileChooser.APPROVE_OPTION) {

                    File[] ff = super.getSelectedFiles();

                    if (ff.length>0) {

                            String theFilePath = ff[0].getAbsolutePath().

                                    substring(0, ff[0].getAbsolutePath().lastIndexOf(File.pathSeparator));

                            jfcLastPaths.put(fileChooserID, theFilePath);

                    } else if (super.getSelectedFile() != null) {

                            File f = super.getSelectedFile() ;

                            String theFilePath = f.getAbsolutePath().

                                                substring(0, f.getAbsolutePath().lastIndexOf(File.separator));

                            jfcLastPaths.put(fileChooserID, theFilePath);

                    }

            }

*/

}