handleTreeSelectionChanged();
}
});
configSetsViewer = new TreeViewer(configSetsTree);
configSetsViewer.setContentProvider(new ConfigSetContentProvider(project));
configSetsViewer.setLabelProvider(new PropertiesModelLabelProvider());
configSetsViewer.setSorter(new ConfigSetsSorter());
configSetsViewer.setInput(project.getProject()); // activate content
// provider
configSetsViewer.expandToLevel(project, 1);
configSetsViewer.addDoubleClickListener(new IDoubleClickListener() {