final DCPanel toolBarPanel = new DCPanel(WidgetUtils.BG_COLOR_LESS_DARK, WidgetUtils.BG_COLOR_DARK);
toolBarPanel.setLayout(new BorderLayout());
toolBarPanel.add(toolBar, BorderLayout.CENTER);
final DCPanel panel = new DCPersistentSizedPanel(_userPreferences, getClass().getName(), DEFAULT_WINDOW_WIDTH,
DEFAULT_WINDOW_HEIGHT);
panel.setLayout(new BorderLayout());
panel.add(toolBarPanel, BorderLayout.NORTH);
panel.add(_leftPanel, BorderLayout.WEST);
panel.add(_tabbedPane, BorderLayout.CENTER);
panel.add(statusBar, BorderLayout.SOUTH);
WidgetUtils.centerOnScreen(this);
initializeExistingComponents();