move UIWindow to lua

modules/core_widgets/core_widgets.otmod

@@ -12,5 +12,6 @@ Module
     require 'uicombobox'
     require 'uiprogressbar'
     require 'uipopupmenu'
+    require 'uiwindow'
     require 'tooltip/tooltip'
     require 'messagebox/messagebox'

modules/core_widgets/messagebox/messagebox.lua

@@ -10,8 +10,9 @@ function MessageBox.create(title, text, flags)
   setmetatable(box, MessageBox)
 
   -- create messagebox window
-  local window = displayUI('messagebox.otui', { locked = true })
-  window:setTitle(title)
+  local window = displayUI('messagebox.otui')
+  window:lock()
+  window:setText(title)
 
   local label = window:getChildById('messageBoxLabel')
   label:setText(text)

modules/core_widgets/uiwindow.lua

@@ -0,0 +1,17 @@
+UIWindow = extends(UIWidget)
+
+function UIWindow.create()
+  local window = UIWindow.internalCreate()
+  window:setTextAlign(AlignTopCenter)
+  return window
+end
+
+function UIWindow:onKeyPress(keyCode, keyText, keyboardModifiers)
+  if keyboardModifiers == KeyboardNoModifier then
+    if keyCode == KeyReturn or keyCode == KeyEnter then
+      signalcall(self.onEnter, self)
+    elseif keyCode == KeyEscape then
+      signalcall(self.onEscape, self)
+    end
+  end
+end