@Override public JComponent[] getMenuPresenters() { List<DataContentTopComponent> newWindowLists = DataContentTopComponent.getNewWindowList(); // Get DataContent provider to include in the menu int totalItems = newWindowLists.size() > 0 ? 2 : 1; JComponent[] comps = new JComponent[totalItems]; int counter = 0; TopComponent contentWin = DataContentTopComponent.findInstance(); JMenuItem defaultItem = new JMenuItem(contentWin.getName()); // set the main name defaultItem.addActionListener(new OpenTopComponentAction(contentWin)); if (!Case.isCaseOpen() || Case.getCurrentCase().hasData() == false) { defaultItem.setEnabled(false); // disable the menu items when no case is opened } else { defaultItem.setEnabled(true); // enable the menu items when there's a case opened / created } comps[counter++] = defaultItem; // add the submenu if (newWindowLists != null) { if (newWindowLists.size() > 0) { JMenu submenu = new JMenu( NbBundle.getMessage( this.getClass(), "DataContentDynamicMenu.menu.dataContentWin.text")); for (int i = 0; i < newWindowLists.size(); i++) { DataContentTopComponent dctc = newWindowLists.get(i); JMenuItem item = new JMenuItem(dctc.getName()); item.addActionListener(new OpenTopComponentAction(dctc)); submenu.add(item); } comps[counter++] = submenu; } } return comps; }