/*
* BufferListSet.java - Buffer list matcher
* :tabSize=4:indentSize=4:noTabs=false:
* :folding=explicit:collapseFolds=1:
*
* Copyright (C) 1999, 2004 Slava Pestov
*
* 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.search;
//{{{ Imports
import java.awt.Component;
import org.gjt.sp.jedit.*;
import org.gjt.sp.jedit.io.*;
import org.gjt.sp.util.StandardUtilities;
//}}}
/**
* A file set for searching a user-specified list of buffers.
* @author Slava Pestov
* @version $Id$
*/
public abstract class BufferListSet implements SearchFileSet
{
//{{{ getFirstFile() method
public synchronized String getFirstFile(View view)
{
if(files == null)
files = _getFiles(view);
if(files == null || files.length == 0)
return null;
else
return files[0];
} //}}}
//{{{ getLastFile() method
public synchronized String getLastFile(View view)
{
if(files == null)
files = _getFiles(view);
if(files == null || files.length == 0)
return null;
else
return files[files.length - 1];
} //}}}
//{{{ getNextFile() method
public synchronized String getNextFile(View view, String path)
{
return getPrevOrNextFile(view, path, Direction.NEXT);
} //}}}
//{{{ getPrevFile() method
public synchronized String getPrevFile(View view, String path)
{
return getPrevOrNextFile(view, path, Direction.PREV);
} //}}}
//{{{ getFiles() method
public synchronized String[] getFiles(View view)
{
if(files == null)
files = _getFiles(view);
if(files == null || files.length == 0)
return null;
else
return files;
} //}}}
//{{{ getFileCount() method
public synchronized int getFileCount(View view)
{
if(files == null)
files = _getFiles(view);
if(files == null)
return 0;
else
return files.length;
} //}}}
//{{{ getCode() method
public String getCode()
{
// not supported for arbitrary filesets
return null;
} //}}}
//{{{ invalidateCachedList() method
public void invalidateCachedList()
{
files = null;
} //}}}
//{{{ getPrevOrNextFile method()
private enum Direction {PREV, NEXT}
private String getPrevOrNextFile(View view, String path, Direction direction)
{
if(files == null)
files = _getFiles(view);
if(files == null || files.length == 0)
return null;
if(path == null)
{
path = view.getBuffer().getSymlinkPath();
VFS vfs = VFSManager.getVFSForPath(path);
boolean ignoreCase = ((vfs.getCapabilities()
& VFS.CASE_INSENSITIVE_CAP) != 0);
for (String file : files)
{
if (StandardUtilities.compareStrings(
file, path, ignoreCase) == 0)
{
return path;
}
}
if (direction == Direction.NEXT)
{
return getFirstFile(view);
}
else
{
return getLastFile(view);
}
}
else
{
// -1 so that the last isn't checked
VFS vfs = VFSManager.getVFSForPath(path);
boolean ignoreCase = ((vfs.getCapabilities()
& VFS.CASE_INSENSITIVE_CAP) != 0);
if (direction == Direction.NEXT &&
StandardUtilities.compareStrings(files[files.length - 1],
path, ignoreCase) == 0)
{
// Going forward and already at the last file
return null;
}
else if (direction == Direction.PREV &&
StandardUtilities.compareStrings(files[0], path, ignoreCase) == 0)
{
// Going backward and already at the first file
return null;
}
for(int i = 0; i < files.length - 1; i++)
{
if(StandardUtilities.compareStrings(
files[i],path,ignoreCase) == 0)
{
if (direction == Direction.NEXT)
return files[i + 1];
else
{
if (i == 0)
return files[files.length - 1];
return files[i - 1];
}
}
}
return null;
}
} //}}}
/**
* Note that the paths in the returned list must be
* fully canonicalized.
*/
protected abstract String[] _getFiles(Component comp);
private String[] files;
}