[gtk/BUG_buttons_with_menu_onclick_GTK3] GtkMenuButton: disable focus-on-click

[Nelson Benítez León <nbenitez src gnome org>]

commit 4cf7db089ff4c2d284a14c50dd76211383b263fa
Author: Nelson Benítez León <nbenitezl gmail com>
Date:   Tue Mar 31 20:43:14 2020 -0400

    GtkMenuButton: disable focus-on-click
    
    As general rule, all buttons that launch a menu should
    not grab focus on click, because otherwise when the menu
    is closed the focus goes back to the button instead of
    the previously focused widget, which is the one the user
    was interacting with.
    
    GtkScaleButton and GtkVolumeButton set focus-on-click
    to FALSE for this same reason.
    
    Fixes #1595

 gtk/gtkmenubutton.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gtk/gtkmenubutton.c b/gtk/gtkmenubutton.c
index 8eb18fc4c8..56b687f846 100644
--- a/gtk/gtkmenubutton.c
+++ b/gtk/gtkmenubutton.c
@@ -621,6 +621,7 @@ gtk_menu_button_init (GtkMenuButton *menu_button)
 
   add_arrow (menu_button);
 
+  gtk_widget_set_focus_on_click (GTK_WIDGET (menu_button), FALSE);
   gtk_widget_set_sensitive (GTK_WIDGET (menu_button), FALSE);
 
   context = gtk_widget_get_style_context (GTK_WIDGET (menu_button));