/**
* Copyright (C) 2008-2010 Daniel Senff
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package de.danielsenff.imageflow.tasks;
import java.io.IOException;
import java.net.URL;
import de.danielsenff.imageflow.ImageFlow;
import de.danielsenff.imageflow.ImageFlowView;
import de.danielsenff.imageflow.controller.GraphController;
/**
* Task to import an workflow xml into the existing workflow.
* @author Daniel Senff
*
*/
public class ImportGraphTask extends LoadURLTask<GraphController, Void> {
/**
* Construct a LoadTextFileTask.
*
* @param url the url to load from.
*/
public ImportGraphTask(final URL url) {
super(url);
}
/**
* Construct a LoadTextFileTask.
*
* @param file the file to load from.
*
public ImportGraphTask(final File file) {
super(file.toURL());
}
*/
/**
* Load the url into a String and return it. The
* {@code progress} property is updated as the file is loaded.
* <p>
* If this task is cancelled before the entire file has been
* read, null is returned.
*
* @return
*/
@Override
protected GraphController doInBackground() throws IOException {
final GraphController graphController =
((ImageFlowView)ImageFlow.getApplication()
.getMainView()).getGraphController();
graphController.read(url);
if (!isCancelled()) {
return graphController;
} else {
return null;
}
}
}