public void openFiles(OpenFilesEvent arg0) {
System.out.println("Opening an arff/xrff file under Mac OS X...");
File toOpen = arg0.getFiles().get(0);
if (toOpen.toString().toLowerCase().endsWith(".arff")
|| toOpen.toString().toLowerCase().endsWith(".xrff")) {
weka.gui.GUIChooser.createSingleton();
weka.gui.GUIChooser.getSingleton().showExplorer(toOpen.toString());
} else if (toOpen.toString().toLowerCase().endsWith(".kf")
|| toOpen.toString().toLowerCase().endsWith(".kfml")) {
weka.gui.GUIChooser.createSingleton();
weka.gui.GUIChooser.getSingleton().showKnowledgeFlow(toOpen.toString());
}
}
