author | xdono |
Wed, 02 Jul 2008 12:55:45 -0700 | |
changeset 715 | f16baef3a20e |
parent 462 | 5c2ae7cc263d |
child 1301 | 15e81207e1f2 |
permissions | -rw-r--r-- |
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/* |
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* Copyright 1998-2008 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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package javax.swing.filechooser; |
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import javax.swing.*; |
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import java.awt.Image; |
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import java.io.File; |
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import java.io.FileNotFoundException; |
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import java.io.IOException; |
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import java.text.MessageFormat; |
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import java.util.Vector; |
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import java.lang.ref.WeakReference; |
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import java.beans.PropertyChangeListener; |
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import java.beans.PropertyChangeEvent; |
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import sun.awt.shell.*; |
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/** |
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* FileSystemView is JFileChooser's gateway to the |
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* file system. Since the JDK1.1 File API doesn't allow |
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* access to such information as root partitions, file type |
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* information, or hidden file bits, this class is designed |
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* to intuit as much OS-specific file system information as |
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* possible. |
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* |
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* <p> |
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* |
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* Java Licensees may want to provide a different implementation of |
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* FileSystemView to better handle a given operating system. |
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* |
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* @author Jeff Dinkins |
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*/ |
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// PENDING(jeff) - need to provide a specification for |
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// how Mac/OS2/BeOS/etc file systems can modify FileSystemView |
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// to handle their particular type of file system. |
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public abstract class FileSystemView { |
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static FileSystemView windowsFileSystemView = null; |
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static FileSystemView unixFileSystemView = null; |
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//static FileSystemView macFileSystemView = null; |
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static FileSystemView genericFileSystemView = null; |
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private boolean useSystemExtensionHiding = |
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UIManager.getDefaults().getBoolean("FileChooser.useSystemExtensionHiding"); |
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public static FileSystemView getFileSystemView() { |
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if(File.separatorChar == '\\') { |
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if(windowsFileSystemView == null) { |
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windowsFileSystemView = new WindowsFileSystemView(); |
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} |
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return windowsFileSystemView; |
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} |
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if(File.separatorChar == '/') { |
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if(unixFileSystemView == null) { |
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unixFileSystemView = new UnixFileSystemView(); |
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} |
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return unixFileSystemView; |
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} |
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// if(File.separatorChar == ':') { |
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// if(macFileSystemView == null) { |
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// macFileSystemView = new MacFileSystemView(); |
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// } |
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// return macFileSystemView; |
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//} |
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if(genericFileSystemView == null) { |
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genericFileSystemView = new GenericFileSystemView(); |
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} |
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return genericFileSystemView; |
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} |
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public FileSystemView() { |
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final WeakReference<FileSystemView> weakReference = new WeakReference<FileSystemView>(this); |
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UIManager.addPropertyChangeListener(new PropertyChangeListener() { |
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public void propertyChange(PropertyChangeEvent evt) { |
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FileSystemView fileSystemView = weakReference.get(); |
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if (fileSystemView == null) { |
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// FileSystemView was destroyed |
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UIManager.removePropertyChangeListener(this); |
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} else { |
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if (evt.getPropertyName().equals("lookAndFeel")) { |
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fileSystemView.useSystemExtensionHiding = |
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UIManager.getDefaults().getBoolean("FileChooser.useSystemExtensionHiding"); |
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} |
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} |
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} |
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}); |
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} |
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/** |
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* Determines if the given file is a root in the navigatable tree(s). |
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* Examples: Windows 98 has one root, the Desktop folder. DOS has one root |
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* per drive letter, <code>C:\</code>, <code>D:\</code>, etc. Unix has one root, |
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* the <code>"/"</code> directory. |
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* |
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* The default implementation gets information from the <code>ShellFolder</code> class. |
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* |
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* @param f a <code>File</code> object representing a directory |
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* @return <code>true</code> if <code>f</code> is a root in the navigatable tree. |
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* @see #isFileSystemRoot |
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*/ |
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public boolean isRoot(File f) { |
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if (f == null || !f.isAbsolute()) { |
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return false; |
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} |
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File[] roots = getRoots(); |
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for (int i = 0; i < roots.length; i++) { |
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if (roots[i].equals(f)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Returns true if the file (directory) can be visited. |
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* Returns false if the directory cannot be traversed. |
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* |
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* @param f the <code>File</code> |
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* @return <code>true</code> if the file/directory can be traversed, otherwise <code>false</code> |
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* @see JFileChooser#isTraversable |
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* @see FileView#isTraversable |
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* @since 1.4 |
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*/ |
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public Boolean isTraversable(File f) { |
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return Boolean.valueOf(f.isDirectory()); |
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} |
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/** |
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* Name of a file, directory, or folder as it would be displayed in |
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* a system file browser. Example from Windows: the "M:\" directory |
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* displays as "CD-ROM (M:)" |
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* |
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* The default implementation gets information from the ShellFolder class. |
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* |
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* @param f a <code>File</code> object |
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* @return the file name as it would be displayed by a native file chooser |
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* @see JFileChooser#getName |
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* @since 1.4 |
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*/ |
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public String getSystemDisplayName(File f) { |
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String name = null; |
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if (f != null) { |
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name = f.getName(); |
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if (!name.equals("..") && !name.equals(".") && |
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(useSystemExtensionHiding || |
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!isFileSystem(f) || |
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isFileSystemRoot(f)) && |
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((f instanceof ShellFolder) || |
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f.exists())) { |
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name = getShellFolder(f).getDisplayName(); |
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if (name == null || name.length() == 0) { |
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name = f.getPath(); // e.g. "/" |
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} |
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} |
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} |
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return name; |
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} |
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/** |
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* Type description for a file, directory, or folder as it would be displayed in |
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* a system file browser. Example from Windows: the "Desktop" folder |
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* is desribed as "Desktop". |
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* |
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* Override for platforms with native ShellFolder implementations. |
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* |
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* @param f a <code>File</code> object |
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* @return the file type description as it would be displayed by a native file chooser |
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* or null if no native information is available. |
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* @see JFileChooser#getTypeDescription |
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* @since 1.4 |
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*/ |
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public String getSystemTypeDescription(File f) { |
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return null; |
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} |
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/** |
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* Icon for a file, directory, or folder as it would be displayed in |
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* a system file browser. Example from Windows: the "M:\" directory |
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* displays a CD-ROM icon. |
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* |
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* The default implementation gets information from the ShellFolder class. |
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* |
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* @param f a <code>File</code> object |
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* @return an icon as it would be displayed by a native file chooser |
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* @see JFileChooser#getIcon |
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* @since 1.4 |
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*/ |
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public Icon getSystemIcon(File f) { |
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if (f != null) { |
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ShellFolder sf = getShellFolder(f); |
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Image img = sf.getIcon(false); |
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if (img != null) { |
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return new ImageIcon(img, sf.getFolderType()); |
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} else { |
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return UIManager.getIcon(f.isDirectory() ? "FileView.directoryIcon" : "FileView.fileIcon"); |
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} |
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} else { |
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return null; |
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} |
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} |
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/** |
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* On Windows, a file can appear in multiple folders, other than its |
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* parent directory in the filesystem. Folder could for example be the |
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* "Desktop" folder which is not the same as file.getParentFile(). |
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* |
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* @param folder a <code>File</code> object repesenting a directory or special folder |
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* @param file a <code>File</code> object |
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* @return <code>true</code> if <code>folder</code> is a directory or special folder and contains <code>file</code>. |
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* @since 1.4 |
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*/ |
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public boolean isParent(File folder, File file) { |
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if (folder == null || file == null) { |
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return false; |
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} else if (folder instanceof ShellFolder) { |
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File parent = file.getParentFile(); |
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if (parent != null && parent.equals(folder)) { |
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return true; |
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} |
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File[] children = getFiles(folder, false); |
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for (int i = 0; i < children.length; i++) { |
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if (file.equals(children[i])) { |
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return true; |
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} |
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} |
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return false; |
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} else { |
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return folder.equals(file.getParentFile()); |
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} |
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} |
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/** |
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* |
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* @param parent a <code>File</code> object repesenting a directory or special folder |
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* @param fileName a name of a file or folder which exists in <code>parent</code> |
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* @return a File object. This is normally constructed with <code>new |
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* File(parent, fileName)</code> except when parent and child are both |
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* special folders, in which case the <code>File</code> is a wrapper containing |
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* a <code>ShellFolder</code> object. |
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* @since 1.4 |
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*/ |
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public File getChild(File parent, String fileName) { |
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if (parent instanceof ShellFolder) { |
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File[] children = getFiles(parent, false); |
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for (int i = 0; i < children.length; i++) { |
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if (children[i].getName().equals(fileName)) { |
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return children[i]; |
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} |
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} |
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} |
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return createFileObject(parent, fileName); |
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} |
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/** |
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* Checks if <code>f</code> represents a real directory or file as opposed to a |
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* special folder such as <code>"Desktop"</code>. Used by UI classes to decide if |
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* a folder is selectable when doing directory choosing. |
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* |
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* @param f a <code>File</code> object |
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* @return <code>true</code> if <code>f</code> is a real file or directory. |
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* @since 1.4 |
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*/ |
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public boolean isFileSystem(File f) { |
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if (f instanceof ShellFolder) { |
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ShellFolder sf = (ShellFolder)f; |
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// Shortcuts to directories are treated as not being file system objects, |
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// so that they are never returned by JFileChooser. |
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return sf.isFileSystem() && !(sf.isLink() && sf.isDirectory()); |
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} else { |
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return true; |
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} |
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} |
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309 |
/** |
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310 |
* Creates a new folder with a default folder name. |
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*/ |
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public abstract File createNewFolder(File containingDir) throws IOException; |
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/** |
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* Returns whether a file is hidden or not. |
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*/ |
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317 |
public boolean isHiddenFile(File f) { |
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return f.isHidden(); |
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} |
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320 |
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/** |
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323 |
* Is dir the root of a tree in the file system, such as a drive |
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* or partition. Example: Returns true for "C:\" on Windows 98. |
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325 |
* |
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326 |
* @param dir a <code>File</code> object representing a directory |
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327 |
* @return <code>true</code> if <code>f</code> is a root of a filesystem |
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* @see #isRoot |
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329 |
* @since 1.4 |
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*/ |
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331 |
public boolean isFileSystemRoot(File dir) { |
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332 |
return ShellFolder.isFileSystemRoot(dir); |
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333 |
} |
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/** |
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336 |
* Used by UI classes to decide whether to display a special icon |
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* for drives or partitions, e.g. a "hard disk" icon. |
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338 |
* |
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* The default implementation has no way of knowing, so always returns false. |
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* |
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* @param dir a directory |
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* @return <code>false</code> always |
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343 |
* @since 1.4 |
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*/ |
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345 |
public boolean isDrive(File dir) { |
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return false; |
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} |
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/** |
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350 |
* Used by UI classes to decide whether to display a special icon |
|
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* for a floppy disk. Implies isDrive(dir). |
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352 |
* |
|
353 |
* The default implementation has no way of knowing, so always returns false. |
|
354 |
* |
|
355 |
* @param dir a directory |
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356 |
* @return <code>false</code> always |
|
357 |
* @since 1.4 |
|
358 |
*/ |
|
359 |
public boolean isFloppyDrive(File dir) { |
|
360 |
return false; |
|
361 |
} |
|
362 |
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363 |
/** |
|
364 |
* Used by UI classes to decide whether to display a special icon |
|
365 |
* for a computer node, e.g. "My Computer" or a network server. |
|
366 |
* |
|
367 |
* The default implementation has no way of knowing, so always returns false. |
|
368 |
* |
|
369 |
* @param dir a directory |
|
370 |
* @return <code>false</code> always |
|
371 |
* @since 1.4 |
|
372 |
*/ |
|
373 |
public boolean isComputerNode(File dir) { |
|
374 |
return ShellFolder.isComputerNode(dir); |
|
375 |
} |
|
376 |
||
377 |
||
378 |
/** |
|
379 |
* Returns all root partitions on this system. For example, on |
|
380 |
* Windows, this would be the "Desktop" folder, while on DOS this |
|
381 |
* would be the A: through Z: drives. |
|
382 |
*/ |
|
383 |
public File[] getRoots() { |
|
384 |
// Don't cache this array, because filesystem might change |
|
385 |
File[] roots = (File[])ShellFolder.get("roots"); |
|
386 |
||
387 |
for (int i = 0; i < roots.length; i++) { |
|
388 |
if (isFileSystemRoot(roots[i])) { |
|
389 |
roots[i] = createFileSystemRoot(roots[i]); |
|
390 |
} |
|
391 |
} |
|
392 |
return roots; |
|
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} |
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||
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||
396 |
// Providing default implementations for the remaining methods |
|
397 |
// because most OS file systems will likely be able to use this |
|
398 |
// code. If a given OS can't, override these methods in its |
|
399 |
// implementation. |
|
400 |
||
401 |
public File getHomeDirectory() { |
|
402 |
return createFileObject(System.getProperty("user.home")); |
|
403 |
} |
|
404 |
||
405 |
/** |
|
406 |
* Return the user's default starting directory for the file chooser. |
|
407 |
* |
|
408 |
* @return a <code>File</code> object representing the default |
|
409 |
* starting folder |
|
410 |
* @since 1.4 |
|
411 |
*/ |
|
412 |
public File getDefaultDirectory() { |
|
413 |
File f = (File)ShellFolder.get("fileChooserDefaultFolder"); |
|
414 |
if (isFileSystemRoot(f)) { |
|
415 |
f = createFileSystemRoot(f); |
|
416 |
} |
|
417 |
return f; |
|
418 |
} |
|
419 |
||
420 |
/** |
|
421 |
* Returns a File object constructed in dir from the given filename. |
|
422 |
*/ |
|
423 |
public File createFileObject(File dir, String filename) { |
|
424 |
if(dir == null) { |
|
425 |
return new File(filename); |
|
426 |
} else { |
|
427 |
return new File(dir, filename); |
|
428 |
} |
|
429 |
} |
|
430 |
||
431 |
/** |
|
432 |
* Returns a File object constructed from the given path string. |
|
433 |
*/ |
|
434 |
public File createFileObject(String path) { |
|
435 |
File f = new File(path); |
|
436 |
if (isFileSystemRoot(f)) { |
|
437 |
f = createFileSystemRoot(f); |
|
438 |
} |
|
439 |
return f; |
|
440 |
} |
|
441 |
||
442 |
||
443 |
/** |
|
444 |
* Gets the list of shown (i.e. not hidden) files. |
|
445 |
*/ |
|
446 |
public File[] getFiles(File dir, boolean useFileHiding) { |
|
447 |
Vector files = new Vector(); |
|
448 |
||
449 |
||
450 |
// add all files in dir |
|
451 |
File[] names; |
|
452 |
if (!(dir instanceof ShellFolder)) { |
|
453 |
dir = getShellFolder(dir); |
|
454 |
} |
|
455 |
||
456 |
names = ((ShellFolder)dir).listFiles(!useFileHiding); |
|
457 |
File f; |
|
458 |
||
459 |
int nameCount = (names == null) ? 0 : names.length; |
|
460 |
for (int i = 0; i < nameCount; i++) { |
|
461 |
if (Thread.currentThread().isInterrupted()) { |
|
462 |
break; |
|
463 |
} |
|
464 |
f = names[i]; |
|
465 |
if (!(f instanceof ShellFolder)) { |
|
466 |
if (isFileSystemRoot(f)) { |
|
467 |
f = createFileSystemRoot(f); |
|
468 |
} |
|
469 |
try { |
|
470 |
f = ShellFolder.getShellFolder(f); |
|
471 |
} catch (FileNotFoundException e) { |
|
472 |
// Not a valid file (wouldn't show in native file chooser) |
|
473 |
// Example: C:\pagefile.sys |
|
474 |
continue; |
|
475 |
} catch (InternalError e) { |
|
476 |
// Not a valid file (wouldn't show in native file chooser) |
|
477 |
// Example C:\Winnt\Profiles\joe\history\History.IE5 |
|
478 |
continue; |
|
479 |
} |
|
480 |
} |
|
481 |
if (!useFileHiding || !isHiddenFile(f)) { |
|
482 |
files.addElement(f); |
|
483 |
} |
|
484 |
} |
|
485 |
||
486 |
return (File[])files.toArray(new File[files.size()]); |
|
487 |
} |
|
488 |
||
489 |
||
490 |
||
491 |
/** |
|
492 |
* Returns the parent directory of <code>dir</code>. |
|
493 |
* @param dir the <code>File</code> being queried |
|
494 |
* @return the parent directory of <code>dir</code>, or |
|
495 |
* <code>null</code> if <code>dir</code> is <code>null</code> |
|
496 |
*/ |
|
497 |
public File getParentDirectory(File dir) { |
|
498 |
if (dir != null && dir.exists()) { |
|
499 |
ShellFolder sf = getShellFolder(dir); |
|
500 |
File psf = sf.getParentFile(); |
|
501 |
if (psf != null) { |
|
502 |
if (isFileSystem(psf)) { |
|
503 |
File f = psf; |
|
504 |
if (f != null && !f.exists()) { |
|
505 |
// This could be a node under "Network Neighborhood". |
|
506 |
File ppsf = psf.getParentFile(); |
|
507 |
if (ppsf == null || !isFileSystem(ppsf)) { |
|
508 |
// We're mostly after the exists() override for windows below. |
|
509 |
f = createFileSystemRoot(f); |
|
510 |
} |
|
511 |
} |
|
512 |
return f; |
|
513 |
} else { |
|
514 |
return psf; |
|
515 |
} |
|
516 |
} |
|
517 |
} |
|
518 |
return null; |
|
519 |
} |
|
520 |
||
521 |
ShellFolder getShellFolder(File f) { |
|
522 |
if (!(f instanceof ShellFolder) |
|
523 |
&& !(f instanceof FileSystemRoot) |
|
524 |
&& isFileSystemRoot(f)) { |
|
525 |
||
526 |
f = createFileSystemRoot(f); |
|
527 |
} |
|
528 |
try { |
|
529 |
return ShellFolder.getShellFolder(f); |
|
530 |
} catch (FileNotFoundException e) { |
|
531 |
System.err.println("FileSystemView.getShellFolder: f="+f); |
|
532 |
e.printStackTrace(); |
|
533 |
return null; |
|
534 |
} catch (InternalError e) { |
|
535 |
System.err.println("FileSystemView.getShellFolder: f="+f); |
|
536 |
e.printStackTrace(); |
|
537 |
return null; |
|
538 |
} |
|
539 |
} |
|
540 |
||
541 |
/** |
|
542 |
* Creates a new <code>File</code> object for <code>f</code> with correct |
|
543 |
* behavior for a file system root directory. |
|
544 |
* |
|
545 |
* @param f a <code>File</code> object representing a file system root |
|
546 |
* directory, for example "/" on Unix or "C:\" on Windows. |
|
547 |
* @return a new <code>File</code> object |
|
548 |
* @since 1.4 |
|
549 |
*/ |
|
550 |
protected File createFileSystemRoot(File f) { |
|
551 |
return new FileSystemRoot(f); |
|
552 |
} |
|
553 |
||
554 |
||
555 |
||
556 |
||
557 |
static class FileSystemRoot extends File { |
|
558 |
public FileSystemRoot(File f) { |
|
559 |
super(f,""); |
|
560 |
} |
|
561 |
||
562 |
public FileSystemRoot(String s) { |
|
563 |
super(s); |
|
564 |
} |
|
565 |
||
566 |
public boolean isDirectory() { |
|
567 |
return true; |
|
568 |
} |
|
569 |
||
570 |
public String getName() { |
|
571 |
return getPath(); |
|
572 |
} |
|
573 |
} |
|
574 |
} |
|
575 |
||
576 |
/** |
|
577 |
* FileSystemView that handles some specific unix-isms. |
|
578 |
*/ |
|
579 |
class UnixFileSystemView extends FileSystemView { |
|
580 |
||
581 |
private static final String newFolderString = |
|
582 |
UIManager.getString("FileChooser.other.newFolder"); |
|
583 |
private static final String newFolderNextString = |
|
584 |
UIManager.getString("FileChooser.other.newFolder.subsequent"); |
|
585 |
||
586 |
/** |
|
587 |
* Creates a new folder with a default folder name. |
|
588 |
*/ |
|
589 |
public File createNewFolder(File containingDir) throws IOException { |
|
590 |
if(containingDir == null) { |
|
591 |
throw new IOException("Containing directory is null:"); |
|
592 |
} |
|
593 |
File newFolder = null; |
|
594 |
// Unix - using OpenWindows' default folder name. Can't find one for Motif/CDE. |
|
595 |
newFolder = createFileObject(containingDir, newFolderString); |
|
596 |
int i = 1; |
|
597 |
while (newFolder.exists() && (i < 100)) { |
|
598 |
newFolder = createFileObject(containingDir, MessageFormat.format( |
|
599 |
newFolderNextString, new Object[] { new Integer(i) })); |
|
600 |
i++; |
|
601 |
} |
|
602 |
||
603 |
if(newFolder.exists()) { |
|
604 |
throw new IOException("Directory already exists:" + newFolder.getAbsolutePath()); |
|
605 |
} else { |
|
606 |
newFolder.mkdirs(); |
|
607 |
} |
|
608 |
||
609 |
return newFolder; |
|
610 |
} |
|
611 |
||
612 |
public boolean isFileSystemRoot(File dir) { |
|
613 |
return (dir != null && dir.getAbsolutePath().equals("/")); |
|
614 |
} |
|
615 |
||
616 |
public boolean isDrive(File dir) { |
|
617 |
if (isFloppyDrive(dir)) { |
|
618 |
return true; |
|
619 |
} else { |
|
620 |
return false; |
|
621 |
} |
|
622 |
} |
|
623 |
||
624 |
public boolean isFloppyDrive(File dir) { |
|
625 |
// Could be looking at the path for Solaris, but wouldn't be reliable. |
|
626 |
// For example: |
|
627 |
// return (dir != null && dir.getAbsolutePath().toLowerCase().startsWith("/floppy")); |
|
628 |
return false; |
|
629 |
} |
|
630 |
||
631 |
public boolean isComputerNode(File dir) { |
|
632 |
if (dir != null) { |
|
633 |
String parent = dir.getParent(); |
|
634 |
if (parent != null && parent.equals("/net")) { |
|
635 |
return true; |
|
636 |
} |
|
637 |
} |
|
638 |
return false; |
|
639 |
} |
|
640 |
} |
|
641 |
||
642 |
||
643 |
/** |
|
644 |
* FileSystemView that handles some specific windows concepts. |
|
645 |
*/ |
|
646 |
class WindowsFileSystemView extends FileSystemView { |
|
647 |
||
648 |
private static final String newFolderString = |
|
649 |
UIManager.getString("FileChooser.win32.newFolder"); |
|
650 |
private static final String newFolderNextString = |
|
651 |
UIManager.getString("FileChooser.win32.newFolder.subsequent"); |
|
652 |
||
653 |
public Boolean isTraversable(File f) { |
|
654 |
return Boolean.valueOf(isFileSystemRoot(f) || isComputerNode(f) || f.isDirectory()); |
|
655 |
} |
|
656 |
||
657 |
public File getChild(File parent, String fileName) { |
|
658 |
if (fileName.startsWith("\\") |
|
659 |
&& !(fileName.startsWith("\\\\")) |
|
660 |
&& isFileSystem(parent)) { |
|
661 |
||
662 |
//Path is relative to the root of parent's drive |
|
663 |
String path = parent.getAbsolutePath(); |
|
664 |
if (path.length() >= 2 |
|
665 |
&& path.charAt(1) == ':' |
|
666 |
&& Character.isLetter(path.charAt(0))) { |
|
667 |
||
668 |
return createFileObject(path.substring(0, 2) + fileName); |
|
669 |
} |
|
670 |
} |
|
671 |
return super.getChild(parent, fileName); |
|
672 |
} |
|
673 |
||
674 |
/** |
|
675 |
* Type description for a file, directory, or folder as it would be displayed in |
|
676 |
* a system file browser. Example from Windows: the "Desktop" folder |
|
677 |
* is desribed as "Desktop". |
|
678 |
* |
|
679 |
* The Windows implementation gets information from the ShellFolder class. |
|
680 |
*/ |
|
681 |
public String getSystemTypeDescription(File f) { |
|
682 |
if (f != null) { |
|
683 |
return getShellFolder(f).getFolderType(); |
|
684 |
} else { |
|
685 |
return null; |
|
686 |
} |
|
687 |
} |
|
688 |
||
689 |
/** |
|
690 |
* @return the Desktop folder. |
|
691 |
*/ |
|
692 |
public File getHomeDirectory() { |
|
693 |
return getRoots()[0]; |
|
694 |
} |
|
695 |
||
696 |
/** |
|
697 |
* Creates a new folder with a default folder name. |
|
698 |
*/ |
|
699 |
public File createNewFolder(File containingDir) throws IOException { |
|
700 |
if(containingDir == null) { |
|
701 |
throw new IOException("Containing directory is null:"); |
|
702 |
} |
|
703 |
File newFolder = null; |
|
704 |
// Using NT's default folder name |
|
705 |
newFolder = createFileObject(containingDir, newFolderString); |
|
706 |
int i = 2; |
|
707 |
while (newFolder.exists() && (i < 100)) { |
|
708 |
newFolder = createFileObject(containingDir, MessageFormat.format( |
|
709 |
newFolderNextString, new Object[] { new Integer(i) })); |
|
710 |
i++; |
|
711 |
} |
|
712 |
||
713 |
if(newFolder.exists()) { |
|
714 |
throw new IOException("Directory already exists:" + newFolder.getAbsolutePath()); |
|
715 |
} else { |
|
716 |
newFolder.mkdirs(); |
|
717 |
} |
|
718 |
||
719 |
return newFolder; |
|
720 |
} |
|
721 |
||
722 |
public boolean isDrive(File dir) { |
|
723 |
return isFileSystemRoot(dir); |
|
724 |
} |
|
725 |
||
726 |
public boolean isFloppyDrive(File dir) { |
|
727 |
String path = dir.getAbsolutePath(); |
|
728 |
return (path != null && (path.equals("A:\\") || path.equals("B:\\"))); |
|
729 |
} |
|
730 |
||
731 |
/** |
|
732 |
* Returns a File object constructed from the given path string. |
|
733 |
*/ |
|
734 |
public File createFileObject(String path) { |
|
735 |
// Check for missing backslash after drive letter such as "C:" or "C:filename" |
|
736 |
if (path.length() >= 2 && path.charAt(1) == ':' && Character.isLetter(path.charAt(0))) { |
|
737 |
if (path.length() == 2) { |
|
738 |
path += "\\"; |
|
739 |
} else if (path.charAt(2) != '\\') { |
|
740 |
path = path.substring(0, 2) + "\\" + path.substring(2); |
|
741 |
} |
|
742 |
} |
|
743 |
return super.createFileObject(path); |
|
744 |
} |
|
745 |
||
746 |
protected File createFileSystemRoot(File f) { |
|
747 |
// Problem: Removable drives on Windows return false on f.exists() |
|
748 |
// Workaround: Override exists() to always return true. |
|
749 |
return new FileSystemRoot(f) { |
|
750 |
public boolean exists() { |
|
751 |
return true; |
|
752 |
} |
|
753 |
}; |
|
754 |
} |
|
755 |
||
756 |
} |
|
757 |
||
758 |
/** |
|
759 |
* Fallthrough FileSystemView in case we can't determine the OS. |
|
760 |
*/ |
|
761 |
class GenericFileSystemView extends FileSystemView { |
|
762 |
||
763 |
private static final String newFolderString = |
|
764 |
UIManager.getString("FileChooser.other.newFolder"); |
|
765 |
||
766 |
/** |
|
767 |
* Creates a new folder with a default folder name. |
|
768 |
*/ |
|
769 |
public File createNewFolder(File containingDir) throws IOException { |
|
770 |
if(containingDir == null) { |
|
771 |
throw new IOException("Containing directory is null:"); |
|
772 |
} |
|
773 |
File newFolder = null; |
|
774 |
// Using NT's default folder name |
|
775 |
newFolder = createFileObject(containingDir, newFolderString); |
|
776 |
||
777 |
if(newFolder.exists()) { |
|
778 |
throw new IOException("Directory already exists:" + newFolder.getAbsolutePath()); |
|
779 |
} else { |
|
780 |
newFolder.mkdirs(); |
|
781 |
} |
|
782 |
||
783 |
return newFolder; |
|
784 |
} |
|
785 |
||
786 |
} |