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 gnu.classpath.NotImplementedException;
41 
42 import java.io.File;
43 import java.io.IOException;
44 
45 import javax.swing.Icon;
46 
47 
48 /**
49  * A concrete implementation of {@link FileSystemView} that is appropriate for
50  * Unix-like systems.
51  *
52  * @see FileSystemView#getFileSystemView()
53  */
54 class UnixFileSystemView extends FileSystemView
55 {
56   /** The default name for new folders. */
57   private static final String NEW_FOLDER_NAME = "NewFolder";
58 
59   /**
60    * Creates a new folder with a unique name in the specified directory and
61    * returns a {@link File} object representing the new directory.  The name
62    * of the new folder is <code>NewFolder</code> or, if a directory or file
63    * with that name already exists, <code>NewFolder.n</code> where
64    * <code>n</code> is the lowest integer greater than zero that results in
65    * a unique directory name.
66    *
67    * @param containingDir  the directory to contain the new folder
68    *                       (<code>null</code> not permitted).
69    *
70    * @return A {@link File} object representing the new directory.
71    *
72    * @throws IOException if an exception occurs while creating the new
73    *                     directory.
74    */
createNewFolder(File containingDir)75   public File createNewFolder(File containingDir) throws IOException
76   {
77     int count = 0;
78     File f = null;
79     String filename = containingDir.getAbsolutePath() + File.separator
80                       + NEW_FOLDER_NAME;
81     while (f == null)
82       {
83         String full = filename;
84         if (count > 0)
85           full += "." + (count++);
86         f = new File(full);
87         if (f.isDirectory() || f.isFile())
88           {
89             count++;
90             f = null;
91           }
92       }
93     f.mkdir();
94     return f;
95   }
96 
97   /**
98    * Returns an array containing the file system root.
99    *
100    * @return An array containing the file system root.
101    */
getRoots()102   public File[] getRoots()
103   {
104     return File.listRoots();
105   }
106 
107   /**
108    * Returns the name of a file as it would be displayed by the underlying
109    * system.
110    *
111    * @param f  the file.
112    *
113    * @return the name of a file as it would be displayed by the underlying
114    *         system
115    */
getSystemDisplayName(File f)116   public String getSystemDisplayName(File f)
117   {
118     String name = null;
119     if (f != null)
120       {
121         if (isRoot(f))
122           name = f.getAbsolutePath();
123         else
124           {
125             try
126               {
127                 String path = f.getCanonicalPath();
128                 name = path.substring(path.lastIndexOf(File.separator) + 1);
129               }
130             catch (IOException e)
131               {
132                 name = f.getName();
133               }
134           }
135       }
136     return name;
137   }
138 
139   /**
140    * Returns the icon that would be displayed for the given file by the
141    * underlying system.  This method is NOT YET IMPLEMENTED.
142    *
143    * @param f  the file.
144    *
145    * @return <code>null</code>.
146    */
getSystemIcon(File f)147   public Icon getSystemIcon(File f)
148     throws NotImplementedException
149   {
150     // FIXME: Implement;
151     return null;
152   }
153 
154   /**
155    * Returns the description of a file that would be displayed by the
156    * underlying system.  This method is NOT YET IMPLEMENTED.
157    *
158    * @param f  the file.
159    *
160    * @return <code>null</code>.
161    */
getSystemTypeDescription(File f)162   public String getSystemTypeDescription(File f)
163     throws NotImplementedException
164   {
165     // FIXME: Implement.
166     return null;
167   }
168 
169   /**
170    * DOCUMENT ME!
171    *
172    * @param f DOCUMENT ME!
173    *
174    * @return DOCUMENT ME!
175    */
isRoot(File f)176   public boolean isRoot(File f)
177   {
178     return isFileSystemRoot(f);
179   }
180 }
181