gridData.grabExcessVerticalSpace = true;
setLayoutData(gridData);
// Create the tree viewer to display the file tree
PatternFilter patternFilter = new PatternFilter();
final FilteredTree filter = new FilteredTree(this, selectionStyle, patternFilter);
final TreeViewer tv = filter.getViewer();
tv.getTree().setLayoutData(new GridData(GridData.FILL_BOTH));
tv.setContentProvider(new ContentProvider());
labelProvider = new LabelProvider();
tv.setLabelProvider(labelProvider);
tv.setInput("dummy2"); // pass a non-null that will be ignored //$NON-NLS-1$