JFileChooserTest.java

/*
    File:       JFileChooserTest.java
    
    Description:Demonstrates behavior of the (Aqua) Swing JFileChooser dialog in
                Mac OS X.  Also illustrates available runtime options to handle
                Mac-specific conditions.
 
                This sample is designed for Java 1.4.1 and later on Mac OS X.  
                
    Author:     md
 
    Copyright:  © Copyright 2003 Apple Computer, Inc. All rights reserved.
    
    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.
                ("Apple") in consideration of your agreement to the following terms, and your
                use, installation, modification or redistribution of this Apple software
                constitutes acceptance of these terms.  If you do not agree with these terms,
                please do not use, install, modify or redistribute this Apple software.
 
                In consideration of your agreement to abide by the following terms, and subject
                to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs
                copyrights in this original Apple software (the "Apple Software"), to use,
                reproduce, modify and redistribute the Apple Software, with or without
                modifications, in source and/or binary forms; provided that if you redistribute
                the Apple Software in its entirety and without modifications, you must retain
                this notice and the following text and disclaimers in all such redistributions of
                the Apple Software.  Neither the name, trademarks, service marks or logos of
                Apple Computer, Inc. may be used to endorse or promote products derived from the
                Apple Software without specific prior written permission from Apple.  Except as
                expressly stated in this notice, no other rights or licenses, express or implied,
                are granted by Apple herein, including but not limited to any patent rights that
                may be infringed by your derivative works or by other works in which the Apple
                Software may be incorporated.
 
                The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
                WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
                WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
                COMBINATION WITH YOUR PRODUCTS.
 
                IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
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                GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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    Change History (most recent first):
            04282003    mdrance Initial Submission
 
*/
 
package com.apple.dts.samplecode.funwithfiledialogs;
 
import java.awt.*;
import java.awt.event.*;
import java.io.File;
import javax.swing.*;
 
public class JFileChooserTest extends JPanel implements ActionListener {
 
    JButton showJFC;
    JCheckBox navigateApps, navigatePkgs, multiSelect;
    ButtonGroup fileSelectionMode;
    JRadioButton files, folders, both;
    JTextArea selectionDisplay;
    JLabel resultsCaption;
    JPanel controls, selectionMode, buttonPanel, resultsPanel;
    JFileChooser jfc;
    
    // Property names and values for Mac OS X JFileChooser properties
    final static String PKG     = "JFileChooser.packageIsTraversable";
    final static String APP     = "JFileChooser.appBundleIsTraversable";
    final static String ALWAYS  = "always";
    final static String NEVER   = "never";
    
    public JFileChooserTest() {
        setLayout(new GridLayout(2, 1));
        add(controls = new JPanel(new GridLayout(5,1)));
        
        // UI for Mac OS X-specific behavior:  Navigation of 
        // .app bundles and .pkg installer packages.
        controls.add(navigateApps = new JCheckBox("Navigate .apps", true));
        controls.add(navigatePkgs = new JCheckBox("Navigate .pkgs", true));
        
        // UI for standard Multiple File Selection option
        controls.add(multiSelect = new JCheckBox("Multiple File Selection"));
        
        // group of JRadioButtons to handle standard file navigation  
        controls.add(selectionMode = new JPanel(new FlowLayout()));
        selectionMode.add(files = new JRadioButton("Files Only"));
        selectionMode.add(folders = new JRadioButton("Folders Only"));
        selectionMode.add(both = new JRadioButton("Files and Folders", true));
        fileSelectionMode = new ButtonGroup();
        fileSelectionMode.add(files);
        fileSelectionMode.add(folders);
        fileSelectionMode.add(both);
        // Map JFileChooser nav options to the appropriate radio button.
        // These will be checked before showing the JFileChooser.
        files.setActionCommand(String.valueOf(JFileChooser.FILES_ONLY));
        folders.setActionCommand(String.valueOf(JFileChooser.DIRECTORIES_ONLY));
        both.setActionCommand(String.valueOf(JFileChooser.FILES_AND_DIRECTORIES));
        
        
        controls.add(buttonPanel = new JPanel());
        buttonPanel.add(showJFC = new JButton("Show JFileChooser"));
        
        add(resultsPanel = new JPanel(new BorderLayout()));
        resultsPanel.add(selectionDisplay = new JTextArea());
        resultsPanel.add(resultsCaption = new JLabel("Selected File(s):"), BorderLayout.NORTH);
        
        showJFC.addActionListener(this);
 
        //  add(options);
        
        jfc = new JFileChooser();
    }
 
    public void actionPerformed (ActionEvent e) {
        // Mac OS X .app/.pkg options are set using putClientProperty
        // See constants above for keys and values.
        // Note that the properties need only be set before *showing* the dialog;
        // it can be set and re-set at will on a single instance
        jfc.putClientProperty(APP, navigateApps.isSelected() ? ALWAYS : NEVER);
        jfc.putClientProperty(PKG, navigatePkgs.isSelected() ? ALWAYS : NEVER);
        
        // Check Multi-selection setting
        jfc.setMultiSelectionEnabled(multiSelect.isSelected());
        
        // Check the selected radio button for standard navigation options.
        try {
            jfc.setFileSelectionMode(Integer.parseInt(fileSelectionMode.getSelection().getActionCommand()));
        } catch (NumberFormatException ex) { /* allow default behavior */}
        
        
        // Display selected file(s) in the text area
        int result = jfc.showOpenDialog(this);
        if (result == JFileChooser.APPROVE_OPTION) {
            selectionDisplay.setText(null);
            if (jfc.isMultiSelectionEnabled()) {
                // List em all
                File[] selections = jfc.getSelectedFiles();
                for (int i=0; i<selections.length; i++) {
                    selectionDisplay.append(selections[i].getName());
                    selectionDisplay.append("\n");
                }
            } else {
                // Get the single selection.  Yes, the API is actually
                // different based on the multiselect bit.
                selectionDisplay.setText(jfc.getSelectedFile().getName());
            }
        }
    }
    
    public static void main(String[] args) {
        JFrame jf = new JFrame("JFileChooserTest");
        jf.getContentPane().add(new JFileChooserTest());
        jf.pack();
        jf.setVisible(true);
    }
}