Java JFileChooser getFile(String message, boolean isLoadNotSave, File defaultFileOrDir, boolean allowMultipleSelection, String description, final String... extensions)

Description

get File

License

LGPL

Declaration

public static File[] getFile(String message, boolean isLoadNotSave, File defaultFileOrDir,
            boolean allowMultipleSelection, String description, final String... extensions) 

Method Source Code

//package com.java2s;
//License from project: LGPL 

import java.io.File;
import java.io.FilenameFilter;

import javax.swing.JFileChooser;

import javax.swing.filechooser.FileNameExtensionFilter;

public class Main {
    public static File[] getFile(String message, boolean isLoadNotSave, File defaultFileOrDir,
            boolean allowMultipleSelection, String description, final String... extensions) {
        if (isMac()) {
            java.awt.Frame frame = new java.awt.Frame();
            java.awt.FileDialog chooser = new java.awt.FileDialog(frame, message,
                    (isLoadNotSave ? java.awt.FileDialog.LOAD : java.awt.FileDialog.SAVE));
            if (defaultFileOrDir != null) {
                if (defaultFileOrDir.isDirectory()) {
                    chooser.setDirectory(defaultFileOrDir.getAbsolutePath());
                } else {
                    chooser.setDirectory(defaultFileOrDir.getParentFile().getAbsolutePath());
                    chooser.setFile(defaultFileOrDir.getName());
                }//from   ww  w .j a  va 2 s  . c  o m
            }
            if (description != null) {
                FilenameFilter filter = new FilenameFilter() {
                    @Override
                    public boolean accept(File dir, String name) {
                        for (int i = 0; i < extensions.length; i++) {
                            if (name.toLowerCase().endsWith(extensions[i].toLowerCase())) {
                                return true;
                            }
                        }
                        return false;
                    }
                };
                chooser.setFilenameFilter(filter);
            }

            chooser.setMultipleMode(allowMultipleSelection);
            chooser.setVisible(true);
            if (chooser.getFile() == null)
                return null;
            if (allowMultipleSelection) {
                return chooser.getFiles();
            }
            File file = new java.io.File(chooser.getDirectory(), chooser.getFile());
            chooser.dispose();
            frame.dispose();
            return new File[] { file };
        } else {
            // No file name in the arguments so throw up a dialog box...
            java.awt.Frame frame = new java.awt.Frame();
            frame.setTitle(message);
            final JFileChooser chooser = new JFileChooser(defaultFileOrDir);
            chooser.setMultiSelectionEnabled(allowMultipleSelection);
            //chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);

            if (description != null && extensions.length > 1 && extensions[0].length() > 0) {
                FileNameExtensionFilter filter = new FileNameExtensionFilter(description, extensions);
                chooser.setFileFilter(filter);
            }

            if (isLoadNotSave) {
                if (chooser.showOpenDialog(frame) == JFileChooser.APPROVE_OPTION) {
                    frame.dispose();
                    if (allowMultipleSelection) {
                        return chooser.getSelectedFiles();
                    } else {
                        if (chooser.getSelectedFile() == null) {
                            return null;
                        }
                        return new File[] { chooser.getSelectedFile() };
                    }
                }
            } else {
                if (chooser.showSaveDialog(frame) == JFileChooser.APPROVE_OPTION) {
                    frame.dispose();
                    if (allowMultipleSelection) {
                        return chooser.getSelectedFiles();
                    } else {
                        if (chooser.getSelectedFile() == null) {
                            return null;
                        }
                        return new File[] { chooser.getSelectedFile() };
                    }
                }
            }
        }
        return null;
    }

    public static boolean isMac() {
        return System.getProperty("os.name").toLowerCase().startsWith("mac");
    }
}

Related

1. getExtension(File f)
2. getFile()
3. getFile(Component parent, String title, boolean write)
4. getFile(FileFilter filter)
5. getFile(String initialPath, final String extension, String TitleText)
6. getFile(String title, File initialDir)
7. getFileChooser()
8. getFileChooser()
9. getFileChooser()