protected Component initComponent() {
MatrixPanel panel = new MatrixPanel(2, 4);
panel.setBorder(new TitledBorder("ToolWindowManagerDescriptor Preference"));
// Right
panel.addPair(0, 0, "numberingEnabled : ", numberingEnabled = new JCheckBox());
numberingEnabled.setAction(new DynamicAction(ToolWindowManagerDescriptor.class,
"numberingEnabled",
new ViewContextSource(viewContext, ToolWindowManagerDescriptor.class),
new ChecBoxSelectionSource(numberingEnabled)));