/*
* Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
* Copyright (C) $$Year-Rel$$ The Jalview Authors
*
* This file is part of Jalview.
*
* Jalview 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 3
* of the License, or (at your option) any later version.
*
* Jalview 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 Jalview. If not, see .
* The Jalview Authors are detailed in the 'AUTHORS' file.
*/
package jalview.io;
import java.util.Locale;
import java.io.File;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.StringTokenizer;
import javax.swing.filechooser.FileFilter;
public class JalviewFileFilter extends FileFilter
{
public static Hashtable suffixHash = new Hashtable();
private Map filters = null;
private String description = "no description";
private String fullDescription = "full description";
private boolean useExtensionsInDescription = true;
private JalviewFileChooser parentJFC = null;
public JalviewFileFilter(String extension, String description)
{
StringTokenizer st = new StringTokenizer(extension, ",");
while (st.hasMoreElements())
{
addExtension(st.nextToken().trim());
}
setDescription(description);
}
public JalviewFileFilter(String[] filts)
{
this(filts, null);
}
public JalviewFileFilter(String[] filts, String description)
{
for (int i = 0; i < filts.length; i++)
{
// add filters one by one
addExtension(filts[i]);
}
if (description != null)
{
setDescription(description);
}
}
public String getAcceptableExtension()
{
return filters.keySet().iterator().next().toString();
}
// takes account of the fact that database is a directory
@Override
public boolean accept(File f)
{
if (f != null)
{
String extension = getExtension(f);
if (f.isDirectory())
{
return true;
}
if ((extension != null) && (filters.get(extension) != null))
{
return true;
}
}
if (parentJFC != null && parentJFC.includeBackupFiles)
{
Iterator it = filters.keySet().iterator();
EXTENSION: while (it.hasNext())
{
String ext = it.next();
// quick negative test
if (!f.getName().contains(ext))
{
continue EXTENSION;
}
BackupFilenameParts bfp = BackupFilenameParts
.currentBackupFilenameParts(f.getName(), ext, true);
if (bfp.isBackupFile())
{
return true;
}
}
}
return false;
}
public String getExtension(File f)
{
if (f != null)
{
String filename = f.getName();
int i = filename.lastIndexOf('.');
if ((i > 0) && (i < (filename.length() - 1)))
{
return filename.substring(i + 1).toLowerCase(Locale.ROOT);
}
;
}
return "";
}
public void addExtension(String extension)
{
if (filters == null)
{
filters = new LinkedHashMap<>(5);
}
filters.put(extension.toLowerCase(Locale.ROOT), this);
fullDescription = null;
}
@Override
public String getDescription()
{
if (fullDescription == null)
{
if ((description == null) || isExtensionListInDescription())
{
fullDescription = (description == null) ? "("
: (description + " (");
// build the description from the extension list
Iterator extensions = filters.keySet().iterator();
if (extensions != null)
{
fullDescription += ("." + extensions.next());
while (extensions.hasNext())
{
fullDescription += (", " + extensions.next());
}
}
fullDescription += ")";
}
else
{
fullDescription = description;
}
}
return fullDescription;
}
public void setDescription(String description)
{
this.description = description;
fullDescription = null;
}
public void setExtensionListInDescription(boolean b)
{
useExtensionsInDescription = b;
fullDescription = null;
}
public boolean isExtensionListInDescription()
{
return useExtensionsInDescription;
}
protected void setParentJFC(JalviewFileChooser p)
{
this.parentJFC = p;
}
}