- make menuEnable() operate on all menus/items with that name (don't stop

when the first was found)
- disable tutorial entries if no tutorial is available

Nasal/gui.nas

@@ -34,12 +34,10 @@ menuEnable = func(name, state) {
     foreach (menu; props.globals.getNode("/sim/menubar/default").getChildren("menu")) {
         if ((n = menu.getNode("name")) != nil and n.getValue() == name) {
             menu.getNode("enabled").setBoolValue(state);
-            return;
         }
         foreach (item; menu.getChildren("item")) {
             if ((n = item.getNode("name")) != nil and n.getValue() == name) {
                 item.getNode("enabled").setBoolValue(state);
-                return;
             }
         }
     }
@@ -69,6 +67,7 @@ INIT = func {
     # enable/disable menu entries
     menuEnable("fuel-and-payload", getprop("/sim/flight-model") == "yasim");
     menuEnable("autopilot", props.globals.getNode("/autopilot/KAP140/locks") == nil);
+    menuEnable("tutorial", size(props.globals.getNode("/sim").getChildren("tutorial")));
 
     var fps = props.globals.getNode("/sim/rendering/fps-display", 1);
     setlistener(fps, fpsDisplay, 1);

gui/menubar.xml

@@ -457,6 +457,7 @@
 
   <item>
    <label>Start Tutorial</label>
+   <name>tutorial</name>
    <binding>
     <command>nasal</command>
     <script>gui.showSelTutDialog()</script>
@@ -465,6 +466,7 @@
 
   <item>
    <label>End Tutorial</label>
+   <name>tutorial</name>
    <binding>
     <command>nasal</command>
     <script>tutorial.stopTutorial()</script>