1/*
2 * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 *   - Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 *
11 *   - Redistributions in binary form must reproduce the above copyright
12 *     notice, this list of conditions and the following disclaimer in the
13 *     documentation and/or other materials provided with the distribution.
14 *
15 *   - Neither the name of Oracle nor the names of its
16 *     contributors may be used to endorse or promote products derived
17 *     from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
20 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*
33 * This source code is provided to illustrate the usage of a given feature
34 * or technique and has been deliberately simplified. Additional steps
35 * required for a production-quality application, such as security checks,
36 * input validation and proper error handling, might not be present in
37 * this sample code.
38 */
39
40
41
42import java.io.File;
43import java.io.IOException;
44import javax.swing.filechooser.FileSystemView;
45
46
47/**
48 * This is a simple example that uses the FileSystemView class.
49 * You can provide a superclass of the FileSystemView class with your own functionality.
50 *
51 * @author Pavel Porvatov
52 */
53public class ExampleFileSystemView extends FileSystemView {
54
55    /**
56     * Creates a new folder with the default name "New folder". This method is invoked
57     * when the user presses the "New folder" button.
58     */
59    public File createNewFolder(File containingDir) throws IOException {
60        File result = new File(containingDir, "New folder");
61
62        if (result.exists()) {
63            throw new IOException("Directory 'New folder' exists");
64        }
65
66        if (!result.mkdir()) {
67            throw new IOException("Cannot create directory");
68        }
69
70        return result;
71    }
72
73    /**
74     * Returns a list which appears in a drop-down list of the FileChooser component.
75     * In this implementation only the home directory is returned.
76     */
77    @Override
78    public File[] getRoots() {
79        return new File[] { getHomeDirectory() };
80    }
81
82    /**
83     * Returns a string that represents a directory or a file in the FileChooser component.
84     * A string with all upper case letters is returned for a directory.
85     * A string with all lower case letters is returned for a file.
86     */
87    @Override
88    public String getSystemDisplayName(File f) {
89        String displayName = super.getSystemDisplayName(f);
90
91        return f.isDirectory() ? displayName.toUpperCase() : displayName.
92                toLowerCase();
93    }
94}
95