move Document and RadioGroup implementation to core:gui_util

res/modules/gui_util.lua

@@ -51,4 +51,57 @@ function gui_util.reset_local()
     gui_util.local_dispatchers = {}
 end
 
+-- class designed for simple UI-nodes access via properties syntax
+local Element = {}
+function Element.new(docname, name)
+    return setmetatable({docname=docname, name=name}, {
+        __index=function(self, k)
+            return gui.getattr(self.docname, self.name, k)
+        end,
+        __newindex=function(self, k, v)
+            gui.setattr(self.docname, self.name, k, v)
+        end
+    })
+end
+
+-- the engine automatically creates an instance for every ui document (layout)
+local Document = {}
+function Document.new(docname)
+    return setmetatable({name=docname}, {
+        __index=function(self, k)
+            local elem = Element.new(self.name, k)
+            rawset(self, k, elem)
+            return elem
+        end
+    })
+end
+
+local RadioGroup = {}
+function RadioGroup:set(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
+    self.elements[key].enabled = false
+    self.current = key
+    if self.callback then
+        self.callback(key)
+    end
+end
+function RadioGroup:__call(elements, onset, default)
+    local group = setmetatable({
+        elements=elements, 
+        callback=onset, 
+        current=nil
+    }, {__index=RadioGroup})
+    group:set(default)
+    return group
+end
+setmetatable(RadioGroup, RadioGroup)
+
+gui_util.Document = Document
+gui_util.RadioGroup = RadioGroup
+
 return gui_util

res/scripts/stdlib.lua

@@ -146,64 +146,16 @@ function events.emit(event, ...)
     return result
 end
 
--- class designed for simple UI-nodes access via properties syntax
-local Element = {}
-function Element.new(docname, name)
-    return setmetatable({docname=docname, name=name}, {
-        __index=function(self, k)
-            return gui.getattr(self.docname, self.name, k)
-        end,
-        __newindex=function(self, k, v)
-            gui.setattr(self.docname, self.name, k, v)
-        end
-    })
-end
+gui_util = require "core:gui_util"
 
--- the engine automatically creates an instance for every ui document (layout)
-Document = {}
-function Document.new(docname)
-    return setmetatable({name=docname}, {
-        __index=function(self, k)
-            local elem = Element.new(self.name, k)
-            rawset(self, k, elem)
-            return elem
-        end
-    })
-end
-
-local _RadioGroup = {}
-function _RadioGroup:set(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
-    self.elements[key].enabled = false
-    self.current = key
-    if self.callback then
-        self.callback(key)
-    end
-end
-function _RadioGroup:__call(elements, onset, default)
-    local group = setmetatable({
-        elements=elements, 
-        callback=onset, 
-        current=nil
-    }, {__index=_RadioGroup})
-    group:set(default)
-    return group
-end
-setmetatable(_RadioGroup, _RadioGroup)
-RadioGroup = _RadioGroup
+Document = gui_util.Document
+RadioGroup = gui_util.RadioGroup
+__vc_page_loader = gui_util.load_page
 
 _GUI_ROOT = Document.new("core:root")
 _MENU = _GUI_ROOT.menu
 menu = _MENU
 
-gui_util = require "core:gui_util"
-__vc_page_loader = gui_util.load_page
-
 ---  Console library extension ---
 console.cheats = {}