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The source code// $Id: Win32FileSystemView.java,v 1.8 2004/08/25 21:00:59 mvw Exp $ // Copyright (c) 2003 The Regents of the University of California. All // Rights Reserved. Permission to use, copy, modify, and distribute this // software and its documentation without fee, and without a written // agreement is hereby granted, provided that the above copyright notice // and this paragraph appear in all copies. This software program and // documentation are copyrighted by The Regents of the University of // California. The software program and documentation are supplied "AS // IS", without any accompanying services from The Regents. The Regents // does not warrant that the operation of the program will be // uninterrupted or error-free. The end-user understands that the program // was developed for research purposes and is advised not to rely // exclusively on the program for any reason. IN NO EVENT SHALL THE // UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, // SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, // ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF // THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF // SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE // PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF // CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, // UPDATES, ENHANCEMENTS, OR MODIFICATIONS. // // The following code is taken and only slightly modified // from Sun's java discussion forums. // // http://forum.java.sun.com/thread.jsp?forum=38&thread=71610 // package org.argouml.util.osdep.win32; import java.io.File; import java.io.IOException; import java.util.Vector; import javax.swing.filechooser.FileSystemView; /** This class is necessary due to an annoying bug on Windows NT where * instantiating a JFileChooser with the default FileSystemView will * cause a "drive A: not ready" error every time. I grabbed the * Windows FileSystemView impl from the 1.3 SDK and modified it so * as to not use java.io.File.listRoots() to get fileSystem roots. * java.io.File.listRoots() does a SecurityManager.checkRead() which * causes the OS to try to access drive A: even when there is no disk, * causing an annoying "abort, retry, ignore" popup message every time * we instantiate a JFileChooser! * * Instead of calling listRoots() we use a straightforward alternate * method of getting file system roots. * * @author http://forum.java.sun.com/thread.jsp?forum=38&thread=71610 * @since ARGO0.9.8 */ public class Win32FileSystemView extends FileSystemView { /** * The constructor. * */ public Win32FileSystemView() { super(); } /** * Returns true if the given file is a root. * * @see javax.swing.filechooser.FileSystemView#isRoot(java.io.File) */ public boolean isRoot(File f) { if (!f.isAbsolute()) { return false; } String parentPath = f.getParent(); if (parentPath == null) { return true; } else { File parent = new File(parentPath); return parent.equals(f); } } /** * Creates a new folder with a default folder name. * * @see javax.swing.filechooser.FileSystemView#createNewFolder(java.io.File) */ public File createNewFolder(File containingDir) throws IOException { if (containingDir == null) { throw new IOException("Containing directory is null:"); } File newFolder = null; // Using NT's default folder name newFolder = createFileObject(containingDir, "New Folder"); int i = 2; while (newFolder.exists() && (i < 100)) { newFolder = createFileObject(containingDir, "New Folder (" + i + ")"); i++; } if (newFolder.exists()) { throw new IOException("Directory already exists:" + newFolder.getAbsolutePath()); } else { newFolder.mkdirs(); } return newFolder; } /** * Returns whether a file is hidden or not. On Windows * there is currently no way to get this information from * io.File, therefore always return false. * * @see javax.swing.filechooser.FileSystemView#isHiddenFile(java.io.File) */ public boolean isHiddenFile(File f) { return false; } /** * Returns all root partitians on this system. On Windows, this * will be the A: through Z: drives. * * Note - This appears to bypass the B drive! Should * we treat the B drive the same as the A drive, or should * we continue to bypass it? * * @see javax.swing.filechooser.FileSystemView#getRoots() */ public File[] getRoots() { Vector rootsVector = new Vector(); // Create the A: drive whether it is mounted or not FileSystemRoot floppy = new FileSystemRoot("A" + ":" + File.separator); rootsVector.addElement(floppy); // Run through all possible mount points and check // for their existance. for (char c = 'C'; c <= 'Z'; c++) { char device[] = {c, ':', File.separatorChar}; String deviceName = new String(device); File deviceFile = new FileSystemRoot(deviceName); if (deviceFile != null && deviceFile.exists()) { rootsVector.addElement(deviceFile); } } File[] roots = new File[rootsVector.size()]; rootsVector.copyInto(roots); return roots; } class FileSystemRoot extends File { public FileSystemRoot(String s) { super(s); } public boolean isDirectory() { return true; } } } |
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