package org.gvt.action;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.FileDialog;
import org.gvt.ChisioMain;
import org.gvt.model.CompoundModel;
import org.gvt.util.SIFReader;
import java.io.File;
/**
* This class loads an XML file which is Graphml based and visualizes the graph.
* It is called from Menubar/File/Open item.
*
* @author Cihan Kucukkececi
* @author Ozgun Babur
*
* Copyright: Bilkent Center for Bioinformatics, 2007 - present
*/
public class LoadSIFFileAction extends Action
{
ChisioMain main;
String filename;
boolean runLayout;
/**
* Constructor without filename. opens an FileChooser for filename
*
* @param chisio
*/
public LoadSIFFileAction(ChisioMain chisio)
{
super("Load SIF File ...");
setToolTipText(getText());
setImageDescriptor(ImageDescriptor.createFromFile(
ChisioMain.class,
"icon/open.png"));
this.main = chisio;
this.runLayout = true;
}
/**
* Constructor with filename. opens the xml with file with the given
* filename.
*
* @param chisio
* @param filename
*/
public LoadSIFFileAction(ChisioMain chisio, String filename, boolean runLayout)
{
this(chisio);
this.filename = filename;
this.runLayout = runLayout;
}
public LoadSIFFileAction(ChisioMain chisio, String filename)
{
this(chisio, filename, true);
}
/**
* opens a FileChooser for loading an xml file
*
* @return chosen filename
*/
public String openFileChooser()
{
// choose an input file.
FileDialog fileChooser = new FileDialog(main.getShell(), SWT.OPEN);
fileChooser.setFilterExtensions(FILTER_EXTENSIONS);
fileChooser.setFilterNames(FILTER_NAMES);
return fileChooser.open();
}
public void run()
{
// if (saveChangesBeforeDiscard(main))
if (true)
{
if (filename == null)
{
filename = openFileChooser();
if (filename == null)
{
return;
}
}
// reset highlight
if (main.getViewer() != null)
{
main.getHighlightLayer().removeAll();
main.getHighlightLayer().highlighted.clear();
}
File xmlfile = new File(filename);
SIFReader reader = new SIFReader();
CompoundModel root = reader.readXMLFile(xmlfile);
if (root != null)
{
main.createNewTab(root);
if (runLayout)
{
new CoSELayoutAction(main).run();
}
else
{
new ZoomAction(main, 0, null).run();
}
main.setOwlFileName(filename);
}
// reset filename for future loadings.
// otherwise always opens the same file
filename = null;
}
}
/**
* Checks if the file has a valid extension for loading into chisio.
* @param path the path of the file
* @return true if file name is valid
*/
public static boolean hasValidExtension(String path)
{
for (String extension : FILTER_EXTENSIONS)
{
if (path.substring(path.lastIndexOf(".")).equalsIgnoreCase(extension.substring(1)))
{
return true;
}
}
return false;
}
public static final String[] FILTER_EXTENSIONS = new String[]{"*.sif"};
public static final String[] FILTER_NAMES = new String[]{"Simple Interaction Format (*.sif)"};
}