/*
* org.openmicroscopy.shoola.env.data.views.calls.FilesChecker
*
*------------------------------------------------------------------------------
* Copyright (C) 2006-2009 University of Dundee. All rights reserved.
*
*
* 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
* (at your option) 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*------------------------------------------------------------------------------
*/
package org.openmicroscopy.shoola.env.data.views.calls;
//Java imports
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.swing.filechooser.FileFilter;
//Third-party libraries
//Application-internal dependencies
import org.openmicroscopy.shoola.env.data.OmeroImageService;
import org.openmicroscopy.shoola.env.data.views.BatchCall;
import org.openmicroscopy.shoola.env.data.views.BatchCallTree;
/**
* Controls if the files can be imported.
*
* @author Jean-Marie Burel
* <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
* @author Donald MacDonald
* <a href="mailto:donald@lifesci.dundee.ac.uk">donald@lifesci.dundee.ac.uk</a>
* @version 3.0
* <small>
* (<b>Internal version:</b> $Revision: $Date: $)
* </small>
* @since 3.0-Beta4
*/
public class FilesChecker
extends BatchCallTree
{
/** Call to control if the files can be imported. */
private BatchCall loadCall;
/** The result of the call. */
private Object result;
/**
* Returns <code>true</code> if the file is of a supported format,
* <code>false</code> otherwise.
*
* @param f The file to handle.
* @param filters The collection of filters.
* @return See above.
*/
private boolean isFileSupported(File f, FileFilter[] filters)
{
String path = f.getAbsolutePath();
path = path.toLowerCase();
if (path.endsWith(OmeroImageService.ZIP_EXTENSION)) return true;
for (int i = 0; i < filters.length; i++) {
if (filters[i].accept(f)) return true;
}
return false;
}
/**
* Creates a {@link BatchCall} to control if the passed files can be
* imported.
*
* @param files The files to control.
* @return The {@link BatchCall}.
*/
private BatchCall makeCheckCall(final List<File> files)
{
return new BatchCall("Downloading files.") {
public void doCall()
{
OmeroImageService service = context.getImageService();
FileFilter[] filters = service.getSupportedFileFormats();
Map<Boolean, List<File>> m = new HashMap<Boolean, List<File>>();
m.put(Boolean.valueOf(false), new ArrayList<File>());
m.put(Boolean.valueOf(true), new ArrayList<File>());
Iterator<File> j = files.iterator();
File f;
List<File> l;
while (j.hasNext()) {
f = j.next();
l = m.get(isFileSupported(f, filters));
l.add(f);
}
result = m;
}
};
}
/**
* Adds the {@link #loadCall} to the computation tree.
* @see BatchCallTree#buildTree()
*/
protected void buildTree() { add(loadCall); }
/**
* Returns the collection of archives files.
* @see BatchCallTree#getResult()
*/
protected Object getResult() { return result; }
/**
* Creates a new instance.
*
* @param files The files to handle.
*/
public FilesChecker(List<File> files)
{
if (files == null)
throw new IllegalArgumentException("No files to check.");
loadCall = makeCheckCall(files);
}
}