FileRootsVFS.java :  » Swing-Library » jEdit-4.3.1 » org » gjt » sp » jedit » io » Java Open Source

/*
 * FileRootsVFS.java - Local root filesystems VFS
 * :tabSize=8:indentSize=8:noTabs=false:
 * :folding=explicit:collapseFolds=1:
 *
 * Copyright (C) 2000, 2005 Slava Pestov
 * Portions copyright (C) 2002 Kris Kopicki
 * Portions copyright (C) 2002 Carmine Lucarelli
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

package org.gjt.sp.jedit.io;

//{{{ Imports
import javax.swing.filechooser.FileSystemView;
import java.awt.Component;
import java.io.File;
import java.util.LinkedList;
import org.gjt.sp.jedit.MiscUtilities;
import org.gjt.sp.jedit.OperatingSystem;
//}}}

/**
 * A VFS that lists local root filesystems.
 * @author Slava Pestov
 * @version $Id: FileRootsVFS.java 14617 2009-02-09 09:42:52Z kpouer $
 */
public class FileRootsVFS extends VFS
{
  public static final String PROTOCOL = "roots";

  //{{{ FileRootsVFS constructor
  public FileRootsVFS()
  {
    super("roots",LOW_LATENCY_CAP | BROWSE_CAP, new String[] {
      EA_TYPE });
  } //}}}

  //{{{ getParentOfPath() method
  public String getParentOfPath(String path)
  {
    return PROTOCOL + ':';
  } //}}}

  //{{{ _listFiles() method
  public VFSFile[] _listFiles(Object session, String url,
    Component comp)
  {
    File[] roots = listRoots();

    if(roots == null)
      return null;

    VFSFile[] rootDE = new VFSFile[roots.length];
    for(int i = 0; i < roots.length; i++)
      rootDE[i] = new Root(roots[i]);

    return rootDE;
  } //}}}

  //{{{ _getFile() method
  public VFSFile _getFile(Object session, String path,
    Component comp)
  {
    return new Root(new File(path));
  } //}}}

  //{{{ Private members
  private static FileSystemView fsView = FileSystemView.getFileSystemView();

  //{{{ listRoots() method
  private static File[] listRoots()
  {
    if (OperatingSystem.isMacOS())
    {
      // Nasty hardcoded values
      File[] volumes = new File("/Volumes").listFiles();
      LinkedList<File> roots = new LinkedList<File>();

      roots.add(new File("/"));

      for (int i=0; i<volumes.length; i++)
      {
        // Make sure people don't do stupid things like putting files in /Volumes
        if (volumes[i].isDirectory())
          roots.add(volumes[i]);
      }

      return roots.toArray(new File[roots.size()]);
    }
    else
    {
      File[] roots = File.listRoots();
      File[] desktop = fsView.getRoots();

      if(desktop == null)
        return roots;

      File[] rootsPlus = new File[roots.length + desktop.length];
      System.arraycopy(desktop, 0, rootsPlus, 0, desktop.length);
      System.arraycopy(roots, 0, rootsPlus, 1, roots.length);
      return rootsPlus;
    }
  } //}}}

  //}}}

  //{{{ Root class
  static class Root extends VFSFile
  {
    Root(File file)
    {
      // REMIND: calling isDirectory() on a floppy drive
      // displays stupid I/O error dialog box on Windows

      String path = file.getPath();
      setPath(path);
      setDeletePath(path);
      setSymlinkPath(path);

      if(fsView.isFloppyDrive(file))
      {
        setType(VFSFile.FILESYSTEM);
        setName(path);
      }
      else if(fsView.isDrive(file))
      {
        setType(VFSFile.FILESYSTEM);
        setName(path + ' '
          + fsView.getSystemDisplayName(file));
      }
      else if(file.isDirectory())
      {
        if(fsView.isFileSystemRoot(file))
          setType(VFSFile.DIRECTORY);
        else
          setType(VFSFile.FILESYSTEM);

        if(OperatingSystem.isMacOS())
          setName(MiscUtilities.getFileName(path));
        else
          setName(path);
      }
      else
        setType(VFSFile.FILE);
    }

    public String getExtendedAttribute(String name)
    {
      if(name.equals(EA_TYPE))
        return super.getExtendedAttribute(name);
      else
      {
        // don't want it to show "0 bytes" for size,
        // etc.
        return null;
      }
    }
  } //}}}
}