@Override
protected TreeViewer createTreeViewer(Composite parent) {
int styleBits = SWT.SINGLE;
TreeViewer tree;
if (!hasAtMostOnePage()) {
filteredTree = new PreferenceFilteredTree(parent, styleBits, new PreferencePatternFilter());
filteredTree.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
tree = filteredTree.getViewer();
} else tree = new TreeViewer(parent, styleBits);
setContentAndLabelProviders(tree);
tree.setInput(getPreferenceManager());
tree.addFilter(new CapabilityFilter());
tree.addSelectionChangedListener(event -> handleTreeSelectionChanged(event));
super.addListeners(tree);
return tree;
}
