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