[rhythmbox] shell: add F10 accel for the menu button, if there's no app menu

[Jonathan Matthew <jmatthew src gnome org>]

commit 57bdbc596e240d3730b09cfaf9a77adb309b64c8
Author: Jonathan Matthew <jonathan d14n org>
Date:   Thu Apr 11 09:18:21 2013 +1000

    shell: add F10 accel for the menu button, if there's no app menu
    
    This appears to be the convention, since Web and Files both use it.

 shell/rb-shell.c |   15 ++++++++++++++-
 1 files changed, 14 insertions(+), 1 deletions(-)
---
diff --git a/shell/rb-shell.c b/shell/rb-shell.c
index 3d256f7..f8dc31a 100644
--- a/shell/rb-shell.c
+++ b/shell/rb-shell.c
@@ -681,6 +681,7 @@ static void
 construct_load_ui (RBShell *shell)
 {
        GApplication *app = g_application_get_default ();
+       gboolean shell_shows_app_menu;
        GtkWidget *toolbar;
        GtkBuilder *builder;
        GtkToolItem *tool_item;
@@ -720,10 +721,22 @@ construct_load_ui (RBShell *shell)
         * or in party mode where the app menu is inaccessible.
         */
        menu_button = gtk_menu_button_new ();
-
        model = rb_application_get_shared_menu (RB_APPLICATION (app), "app-menu");
        gtk_menu_button_set_menu_model (GTK_MENU_BUTTON (menu_button), model);
 
+       g_object_get (gtk_settings_get_default (),
+                     "gtk-shell-shows-app-menu", &shell_shows_app_menu,
+                     NULL);
+       if (shell_shows_app_menu == FALSE) {
+               gtk_widget_add_accelerator (menu_button,
+                                           "activate",
+                                           shell->priv->accel_group,
+                                           GDK_KEY_F10,
+                                           0,
+                                           GTK_ACCEL_VISIBLE);
+               rb_application_set_menu_accelerators (shell->priv->application, model, TRUE);
+       }
+
        image = gtk_image_new_from_icon_name ("emblem-system-symbolic", GTK_ICON_SIZE_LARGE_TOOLBAR);
        gtk_container_add (GTK_CONTAINER (menu_button), image);