old-autovect-branch/libjava/classpath/javax/swing/filechooser/UnixFileSystemView.java

   1 /* UnixFileSystemView.java --
   2    Copyright (C) 2005  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 package javax.swing.filechooser;
  39
  40 import java.io.File;
  41 import java.io.IOException;
  42 import javax.swing.Icon;
  43
  44
  45 /**
  46  * A concrete implementation of {@link FileSystemView} that is appropriate for
  47  * Unix-like systems.
  48  *
  49  * @see FileSystemView#getFileSystemView()
  50  */
  51 class UnixFileSystemView extends FileSystemView
  52 {
  53   /** The default name for new folders. */
  54   private static final String NEW_FOLDER_NAME = "NewFolder";
  55
  56   /**
  57    * Creates a new folder with a unique name in the specified directory and
  58    * returns a {@link File} object representing the new directory.  The name
  59    * of the new folder is <code>NewFolder</code> or, if a directory or file
  60    * with that name already exists, <code>NewFolder.n</code> where
  61    * <code>n</code> is the lowest integer greater than zero that results in
  62    * a unique directory name.
  63    *
  64    * @param containingDir  the directory to contain the new folder
  65    *                       (<code>null</code> not permitted).
  66    *
  67    * @return A {@link File} object representing the new directory.
  68    *
  69    * @throws IOException if an exception occurs while creating the new
  70    *                     directory.
  71    */
  72   public File createNewFolder(File containingDir) throws IOException
  73   {
  74     int count = 0;
  75     File f = null;
  76     String filename = containingDir.getAbsolutePath() + File.separator
  77                       + NEW_FOLDER_NAME;
  78     while (f == null)
  79       {
  80         String full = filename;
  81         if (count > 0)
  82           full += "." + (count++);
  83         f = new File(full);
  84         if (f.isDirectory() || f.isFile())
  85           {
  86             count++;
  87             f = null;
  88           }
  89       }
  90     f.mkdir();
  91     return f;
  92   }
  93
  94   /**
  95    * Returns an array containing the file system root.
  96    *
  97    * @return An array containing the file system root.
  98    */
  99   public File[] getRoots()
 100   {
 101     return File.listRoots();
 102   }
 103
 104   /**
 105    * Returns the name of a file as it would be displayed by the underlying
 106    * system.  This method is NOT YET IMPLEMENTED.
 107    *
 108    * @param f  the file.
 109    *
 110    * @return <code>null</code>.
 111    */
 112   public String getSystemDisplayName(File f)
 113   {
 114     // FIXME: Implement;
 115     return null;
 116   }
 117
 118   /**
 119    * Returns the icon that would be displayed for the given file by the
 120    * underlying system.  This method is NOT YET IMPLEMENTED.
 121    *
 122    * @param f  the file.
 123    *
 124    * @return <code>null</code>.
 125    */
 126   public Icon getSystemIcon(File f)
 127   {
 128     // FIXME: Implement;
 129     return null;
 130   }
 131
 132   /**
 133    * Returns the description of a file that would be displayed by the
 134    * underlying system.  This method is NOT YET IMPLEMENTED.
 135    *
 136    * @param f  the file.
 137    *
 138    * @return <code>null</code>.
 139    */
 140   public String getSystemTypeDescription(File f)
 141   {
 142     // FIXME: Implement.
 143     return null;
 144   }
 145
 146   /**
 147    * DOCUMENT ME!
 148    *
 149    * @param f DOCUMENT ME!
 150    *
 151    * @return DOCUMENT ME!
 152    */
 153   public boolean isRoot(File f)
 154   {
 155     return isFileSystemRoot(f);
 156   }
 157 }