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    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      */
   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      */
  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.  This method is NOT YET IMPLEMENTED.
  110      *
  111      * @param f  the file.
  112      *
  113      * @return <code>null</code>.
  114      */
  115     public String getSystemDisplayName(File f)
  116       throws NotImplementedException
  117     {
  118       // FIXME: Implement;
  119       return null;
  120     }
  121   
  122     /**
  123      * Returns the icon that would be displayed for the given file by the 
  124      * underlying system.  This method is NOT YET IMPLEMENTED.
  125      *
  126      * @param f  the file.
  127      *
  128      * @return <code>null</code>.
  129      */
  130     public Icon getSystemIcon(File f)
  131       throws NotImplementedException
  132     {
  133       // FIXME: Implement;
  134       return null;
  135     }
  136   
  137     /**
  138      * Returns the description of a file that would be displayed by the 
  139      * underlying system.  This method is NOT YET IMPLEMENTED.
  140      *
  141      * @param f  the file.
  142      *
  143      * @return <code>null</code>.
  144      */
  145     public String getSystemTypeDescription(File f)
  146       throws NotImplementedException
  147     {
  148       // FIXME: Implement.
  149       return null;
  150     }
  151   
  152     /**
  153      * DOCUMENT ME!
  154      *
  155      * @param f DOCUMENT ME!
  156      *
  157      * @return DOCUMENT ME!
  158      */
  159     public boolean isRoot(File f)
  160     {
  161       return isFileSystemRoot(f);
  162     }
  163   }

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