Better implementation for forming the singleton wrapper.

modules/corelib/settings.lua

@@ -1,82 +1,47 @@
--- @docclass
-g_settings = {
-  impl = g_configs.getSettings()
-}
+local config = g_configs.getSettings()
 
-function g_settings.save()
-  g_settings.impl:save()
-end
-
-function g_settings.setList(key, list)
-  g_settings.impl:setList(key, list)
-end
-
-function g_settings.getList(key)
-  g_settings.impl:getList(key)
-end
-
-function g_settings.exists(key)
-  g_settings.impl:exists(key)
-end
-
-function g_settings.remove(key)
-  g_settings.impl:remove(key)
-end
-
-function g_settings.setNode(key, node)
-  g_settings.impl:setNode(key, node)
-end
-
-function g_settings.getNode(key)
-  g_settings.impl:getNode(key)
-end
-
-function g_settings.mergeNode(key, node)
-  g_settings.impl:mergeNode(key, node)
-end
-
--- convenience methods
+g_settings = makesingleton(config)
 
 function g_settings.set(key, value)
-  g_settings.impl:set(key, value)
+  config:set(key, value)
 end
 
 function g_settings.setDefault(key, value)
-  return g_settings.impl:setDefault(key, value)
+  return config:setDefault(key, value)
 end
 
 function g_settings.get(key, default)
-  return g_settings.impl:get(key, default)
+  return config:get(key, default)
 end
 
 function g_settings.getString(key, default)
-  return g_settings.impl:getString(key, default)
+  return config:getString(key, default)
 end
 
 function g_settings.getInteger(key, default)
-  return g_settings.impl:getInteger(key, default)
+  return config:getInteger(key, default)
 end
 
 function g_settings.getNumber(key, default)
-  return g_settings.impl:getNumber(key, default)
+  return config:getNumber(key, default)
 end
 
 function g_settings.getBoolean(key, default)
-  return g_settings.impl:getBoolean(key, default)
+  return config:getBoolean(key, default)
 end
 
 function g_settings.getPoint(key, default)
-  return g_settings.impl:getPoint(key, default)
+  return config:getPoint(key, default)
 end
 
 function g_settings.getRect(key, default)
-  return g_settings.impl:getRect(key, default)
+  return config:getRect(key, default)
 end
 
 function g_settings.getSize(key, default)
-  return g_settings.impl:getSize(key, default)
+  return config:getSize(key, default)
 end
 
 function g_settings.getColor(key, default)
-  return g_settings.impl:getColor(key, default)
+  return config:getColor(key, default)
 end

modules/corelib/util.lua

@@ -332,4 +332,16 @@ function getOppositeAnchor(anchor)
   return anchor
 end
 
+function makesingleton(obj)
+  local singleton = {}
+  if obj.getClassName then
+    for key,value in pairs(_G[obj:getClassName()]) do
+      if type(value) == 'function' then
+        singleton[key] = function(...) value(obj, ...) end
+      end
+    end
+  end
+  return singleton
+end
+
 -- @}