[gtk/submenu-action-fixes: 1409/1409] menusectionbox: Fix submenu-action for nested menus

[Matthias Clasen <matthiasc src gnome org>]

commit debcc6277581a3c43a77ec5991924abfe6ef0243
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Mar 8 00:43:43 2021 -0500

    menusectionbox: Fix submenu-action for nested menus
    
    We were not updating the state of submenu-actions
    for nested submenus.
    
    Fixes: #3721

 gtk/gtkmenusectionbox.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
---
diff --git a/gtk/gtkmenusectionbox.c b/gtk/gtkmenusectionbox.c
index 6210119c35..8dd8fe18f3 100644
--- a/gtk/gtkmenusectionbox.c
+++ b/gtk/gtkmenusectionbox.c
@@ -292,6 +292,22 @@ open_submenu (GtkWidget *button,
   gtk_widget_grab_focus (focus);
 }
 
+static void
+submenu_shown (GtkPopoverMenu     *popover,
+               GtkMenuTrackerItem *item)
+{
+  if (gtk_menu_tracker_item_get_should_request_show (item))
+    gtk_menu_tracker_item_request_submenu_shown (item, TRUE);
+}
+
+static void
+submenu_hidden (GtkPopoverMenu     *popover,
+                GtkMenuTrackerItem *item)
+{
+  if (gtk_menu_tracker_item_get_should_request_show (item))
+    gtk_menu_tracker_item_request_submenu_shown (item, FALSE);
+}
+
 static void
 gtk_menu_section_box_insert_func (GtkMenuTrackerItem *item,
                                   int                 position,
@@ -324,6 +340,9 @@ gtk_menu_section_box_insert_func (GtkMenuTrackerItem *item,
           g_object_bind_property (item, "label", widget, "text", G_BINDING_SYNC_CREATE);
           g_object_bind_property (item, "icon", widget, "icon", G_BINDING_SYNC_CREATE);
           g_object_bind_property (item, "sensitive", widget, "sensitive", G_BINDING_SYNC_CREATE);
+
+          g_signal_connect (submenu, "show", G_CALLBACK (submenu_shown), item);
+          g_signal_connect (submenu, "hide", G_CALLBACK (submenu_hidden), item);
         }
       else
         {