Re: Trouble with UIManager toolbar/menu re-ordering

["R. Douglas Barbieri" <dooglio gmail com>]

Sorry, I didn't hear back from anyone on the list yet. Is this the
right list to ask about this? Or should I go to the Gtk+ mailing list?

On Wed, Mar 26, 2008 at 11:20 AM, R. Douglas Barbieri <dooglio gmail com> wrote:
> Hi all,
>
>  I have an example app that I've posted to help illustrate a problem
>  I've encountered with the UIManager's XML re-ordering for
>  menus/toolbars after the initial loading has taken place.
>
>  I took the stock Gtkmm example project found in
>  book/menus_and_toolbars and added an extra placeholder called
>  "NewItems" into the toolbar XML string. I add items to it that are
>  deliberately out of order. When you click on any button that triggers
>  the on_action_others() signal, I add a new menu item plus reorder the
>  items with a new XML string. I make sure the old "UI" from this extra
>  XML merge id is removed first.
>
>  So in addition to the actions that are already present in the example
>  code, I added new actions:
>
>  Last, Middle and First (and also NewItem, but it is not added yet).
>  Here is the new XML fragment I'm adding:
>
>         ui_info = "<ui>"
>                 "  <toolbar name='ToolBar'>"
>                 "   <placeholder name='NewItems'>"
>                 "     <toolitem action='Last'/>"
>                 "     <toolitem action='First'/>"
>                 "     <toolitem action='Middle'/>"
>                 "   </placeholder>"
>                 "  </toolbar>"
>                 "</ui>";
>         m_newItemsMergeId = m_refUIManager->add_ui_from_string(ui_info);
>
>
>  Now the items appear on the toolbar in that order, because this is
>  done in the ExampleWindow constructor.
>
>  When you click on a button that invokes the on_action_others() method,
>  I attempt to alter the order of the toolbar, plus add the "NewItem"
>  action to the toolbar:
>
>         m_refUIManager->remove_ui( m_newItemsMergeId );
>         //
>         Glib::ustring ui_info =
>                 "<ui>"
>                 "  <toolbar name='ToolBar'>"
>                 "    <placeholder name='NewItems'>"
>                 "      <toolitem action='NewItem'/>"
>                 "      <toolitem action='First'/>"
>                 "      <toolitem action='Middle'/>"
>                 "      <toolitem action='Last'/>"
>                 "    </placeholder>"
>                 "  </toolbar>"
>                 "</ui>";
>         //
>         m_newItemsMergeId = m_refUIManager->add_ui_from_string(ui_info);
>
>  Notice the the order has been changed, and the "NewItem" should appear
>  at first on the toolbar. Unfortunately, the buttons appear in the same
>  order as before, and the "NewItem" action shows up at the *end*, not
>  right after the placeholder.
>
>  I added a small hack to force the "NewItem" to be at position 3, and
>  that at least works correctly. But the UIManager seems to not be able
>  to recognize when a toolbar is reorder via XML merging. Oh, and this
>  bug happens with the menubar as well, so it's not just isolated in the
>  toolbar Gtkmm/+ code.
>
>  Speaking of that, I don't know if the problem is with gtkmm or with
>  the underlying gtk+ code. Has anyone else run across this? I have had
>  this issue for years and have always had to work around it.
>
>  Thanks!
>
>  PS:
>
>  Here is the example code:
>  http://www.dooglio.net/source/menus_and_toolbars.tar.gz
>
>  --
>  dooglio gmail com
>



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