@Override protected Component buildContent() { JPanel mainPanel = new JPanel(new BorderLayout()); JSplitPane splitPane = UISupport.createHorizontalSplit(buildCategoriesList(), buildAssertionsList()); splitPane.setDividerLocation(220); getAssertionsTable().setSelectable(true); JXToolBar toolbar = UISupport.createSmallToolbar(); hideDescCB = new JCheckBox("Hide descriptions"); hideDescCB.setOpaque(false); hideDescCB.addItemListener(hideDescListener); hideDescCB.setSelected( SoapUI.getSettings().getBoolean(AssertionDescriptionSettings.SHOW_ASSERTION_DESCRIPTION)); toolbar.add(new JLabel("Assertions")); toolbar.addGlue(); toolbar.add(hideDescCB); mainPanel.add(toolbar, BorderLayout.NORTH); mainPanel.add(splitPane, BorderLayout.CENTER); return mainPanel; }