Java JFileChooser createJFileChooserWithExistenceChecking()

Description

create J File Chooser With Existence Checking

License

Open Source License

Declaration

public static JFileChooser createJFileChooserWithExistenceChecking() 

Method Source Code

//package com.java2s;
/*/*  w w  w. jav  a 2  s.c o  m*/
 * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI
 * for visualizing and manipulating spatial features with geometry and attributes.
 *
 * Copyright (C) 2003 Vivid Solutions
 *
 * 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:
 *
 * Vivid Solutions
 * Suite #1A
 * 2328 Government Street
 * Victoria BC  V8T 5G5
 * Canada
 *
 * (250)385-6040
 * www.vividsolutions.com
 */

import java.io.File;

import javax.swing.JFileChooser;

public class Main {
    public static JFileChooser createJFileChooserWithExistenceChecking() {
        return new JFileChooser() {
            public void approveSelection() {
                File[] files = selectedFiles(this);

                if (files.length == 0) {
                    return;
                }

                for (int i = 0; i < files.length; i++) {
                    if (!files[i].exists() && !files[i].isFile()) {
                        return;
                    }
                }

                super.approveSelection();
            }
        };
    }

    /**
     * Work around Java Bug 4437688 "JFileChooser.getSelectedFile() returns
     * nothing when a file is selected" [Jon Aquino]
     */
    public static File[] selectedFiles(JFileChooser chooser) {
        return ((chooser.getSelectedFiles().length == 0) && (chooser.getSelectedFile() != null))
                ? new File[] { chooser.getSelectedFile() }
                : chooser.getSelectedFiles();
    }
}

Related

1. createChooser(String lastPath, final boolean checkOverrideFile)
2. createFileChooser(File presetFile, final String... postfixes)
3. createFileChooser(String initDir)
4. createFileChooser(String title, File dir, String filter)
5. createJFileChooser(String name)
6. createJFileChooserWithOverwritePrompting()
7. createOpenFileChooser(String title, String dir, Component parent, FileFilter filter)
8. createReportFileChooser(String curDir, File defaultReportFile)
9. createUserDefinedProfileFileChooser()