如何通过右键单击GUI中的特定对象来添加菜单？ （在Eclipse RCP中）

Question

I wanted to add a right click menu, by selecting a column in my GUI.

Any suggestions how to do it?

Answer 1

啊哈，我想您需要在您的GUI的一部分中放置一个鼠标事件侦听器，以响应鼠标事件，例如，鼠标单击...对于菜单，您需要的是JPopupMenu ...，只是一个想法！

Answer 2

You are talking about actions(?). Check Platform Plug-in Developer Guide > Programmer's Guide > Plugging into the workbench > Basic workbench extension points using actions.

Answer 3

If you're looking for solution to Tree or Table, here is an example:

    final Menu menu = new Menu(tracksTree);
    tracksTree.setMenu(menu);
    menu.addMenuListener(new MenuAdapter() {
        @Override public void menuShown(MenuEvent e) {

            MenuItem[] items = menu.getItems();
            for (int i = 0; i < items.length; i++) {
                items[i].dispose();
            }

            TreeItem[] selection = tracksTree.getSelection();
            if (selection.length > 0) {
                TreeItem selectedItem = selection[0];
                System.out.println(selectedItem.getData());


            }
        }

        @Override public void menuHidden(MenuEvent e) {

        }
    });