Default menu missing in my eclipse RCP project

I I build a eclipse RCP application via the new plug-in project wizard(with perspective). Then I run the application, and only some of the default menus showed, see the screenshot below. I want them all. Can anyone he me? enter image description here

I especially want the "Open projects from file system" item. I browsed the internet and found one possible solution, but I cannot achieve my goal. The solution is, add Action in ApplicationWorkbenchWindowAdvisor.java, using ActionFactory.*. But I counldn't find ActionFactory.OPEN_PROJECT or anything like that. Thanks in advance.

There is no ActionFactory for this. "Open projects from file system" is contributed to the File menu by the org.eclipse.ui.ide plug-in using the org.eclipse.ui.menus extension point:

  <extension
         point="org.eclipse.ui.menus">
      <menuContribution
            allPopups="false"
            locationURI="menu:file?after=new.ext">
         <command
               commandId="org.eclipse.e4.ui.importer.openDirectory"
               id="org.eclipse.e4.ui.importer.openDirectory.menu"
               mnemonic="%importProjectsFromFolder_mnemonic"
               style="push">
         </command>
      </menuContribution>

That says that the menu item is added to the file menu after a placeholder called new.ext (and will not be added if that is not there).

You can added the correct placeholder in the ActionBarAdvisor class using

menu.add(new GroupMarker(IWorkbenchActionConstants.NEW_EXT));

where menu is the menu manager for the File menu.