Added dialog windows and control settings.

Lots of comments and changes in UI code in general.

src/ui/layout.lua

@@ -10,6 +10,7 @@ local UIElement  = require 'src.ui.element'
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class Layout: UIElement
 local Layout = make_class(UIElement)
 
 
@@ -18,7 +19,7 @@ local Layout = make_class(UIElement)
 ------------------------------------------------------------------------------
 
 function Layout:_init(x, y, w, h, spacing, float)
-    UIElement._init(self, x, y, float)
+    UIElement._init(self, x, y, float, false)
     self.x        = x ~= nil and x or 0
     self.y        = y ~= nil and y or 0
     self.w        = w
@@ -68,6 +69,27 @@ function Layout:draw()
 end
 
 
+function Layout:keypressed(key, code, isrepeat)
+    for _, v in pairs(self.elements) do
+        v:keypressed(key, code, isrepeat)
+    end
+end
+
+
+function Layout:textinput(text)
+    for _, v in pairs(self.elements) do
+        v:textinput(text)
+    end
+end
+
+
+function Layout:keyreleased(key, code)
+    for _, v in pairs(self.elements) do
+        v:keyreleased(key, code)
+    end
+end
+
+
 function Layout:mousemoved(x, y, dx, dy)
     for _, v in pairs(self.elements) do
         v:mousemoved(x, y, dx, dy)