add console on_open 'mode' argument

res/layouts/console.xml.lua

@@ -194,7 +194,7 @@ function set_mode(mode)
     console_mode = mode
 end
 
-function on_open()
+function on_open(mode)
     if modes == nil then
         modes = RadioGroup({
             chat=document.s_chat,
@@ -204,4 +204,7 @@ function on_open()
             set_mode(mode)
         end, "console")
     end
+    if mode then
+        modes:set(mode)
+    end
 end

res/scripts/stdlib.lua

@@ -86,6 +86,9 @@ end
 
 local _RadioGroup = {}
 function _RadioGroup.set(self, key)
+    if type(self) ~= 'table' then
+        error("called as non-OOP via '.', use radiogroup:set")
+    end
     if self.current then
         self.elements[self.current].enabled = true
     end