Render Curses::Window with props

lib/main.rb

@@ -71,10 +71,17 @@ private
         focus: :menu,
         focused: true,
 
-        menu: {
+        logo: {
           x: 0,
           y: 0,
           width: Widgets::Logo::WIDTH,
+          height: Widgets::Logo::HEIGHT,
+        }.freeze,
+
+        menu: {
+          x: 0,
+          y: Widgets::Logo::HEIGHT,
+          width: Widgets::Logo::WIDTH,
           height: Curses.stdscr.maxy - Widgets::Logo::HEIGHT,
           focused: true,
 
@@ -90,7 +97,7 @@ private
       }.freeze,
 
       chat: {
-        x: 0,
+        x: Widgets::Logo::WIDTH,
         y: 0,
         width: Curses.stdscr.maxx - Widgets::Logo::WIDTH,
         height: Curses.stdscr.maxy,
@@ -98,7 +105,7 @@ private
         focused: false,
 
         info: {
-          x: 0,
+          x: Widgets::Logo::WIDTH,
           y: 0,
           width: Curses.stdscr.maxx - Widgets::Logo::WIDTH,
           height: 2,
@@ -109,10 +116,10 @@ private
         }.freeze,
 
         new_message: {
-          x: 0,
+          x: Widgets::Logo::WIDTH,
-          y: 0,
+          y: Curses.stdscr.maxy - 1,
           width: Curses.stdscr.maxx - Widgets::Logo::WIDTH,
-          height: Curses.stdscr.maxy - 3,
+          height: 1,
           focused: false,
 
           text: '',
@@ -120,10 +127,10 @@ private
         }.freeze,
 
         history: {
-          x: 0,
+          x: Widgets::Logo::WIDTH,
-          y: 0,
+          y: 2,
           width: Curses.stdscr.maxx - Widgets::Logo::WIDTH,
-          height: 1,
+          height: Curses.stdscr.maxy - 3,
           focused: true,
 
           messages: 1.upto(100).map do

lib/screen.rb

@@ -35,13 +35,7 @@ class Screen
     Curses.timeout = 0 # non-blocking input
     Curses.stdscr.keypad = true
 
-    @window ||= Widgets::Main.new(
+    @window ||= Widgets::Main.new nil
-      nil,
-      0,
-      0,
-      Curses.stdscr.maxx,
-      Curses.stdscr.maxy,
-    )
   end
 
   def close

lib/widgets/base.rb

@@ -3,29 +3,45 @@
 module Widgets
   class Base
     attr_reader :parent
-    attr_reader :window
-    attr_reader :width, :height
     attr_reader :props
 
-    def initialize(parent, x, y, width, height)
+    def initialize(parent)
       @parent = parent
-
-      @window = parent ? parent.window.subwin(height, width, y, x) : Curses.stdscr
-
-      @width  = width
-      @height = height
-
       @props = {}.freeze
     end
 
+    def window
+      @window ||= parent ? parent.window.subwin(height, width, y, x) : Curses.stdscr
+    end
+
     def trigger(event); end
 
     def props=(value)
       raise TypeError,     "expected props to be a #{Hash}" unless value.is_a? Hash
       raise ArgumentError, 'expected props to be frozen'    unless value.frozen?
+
+      @window = nil if props[:x] != value[:x] || props[:y] != value[:y] ||
+                       props[:width] != value[:width] || props[:height] != value[:height]
+
       @props = value
     end
 
+    def x
+      props[:x]
+    end
+
+    def y
+      props[:y]
+    end
+
+    def width
+      props[:width]
+    end
+
+    def height
+      props[:height]
+    end
+
     def focused
       props[:focused]
     end

lib/widgets/chat.rb

@@ -2,20 +2,12 @@
 
 module Widgets
   class Chat < VPanel
-    def initialize(parent, x, y, width, height)
+    def initialize(_parent)
       super
 
-      info_height    = 2
+      @info    = Info.new       self
-      message_height = 1
+      @history = History.new    self
-      history_height = height - info_height - message_height
+      @message = NewMessage.new self
-
-      info_top    = 0
-      history_top = info_height
-      message_top = info_height + history_height
-
-      @info    = Info.new       self, x, y + info_top,    width, info_height
-      @history = History.new    self, x, y + history_top, width, history_height
-      @message = NewMessage.new self, x, y + message_top, width, message_height
     end
 
     def props=(_value)

lib/widgets/logo.rb

@@ -16,10 +16,6 @@ module Widgets
     WIDTH  = LOGO.first.length
     HEIGHT = LOGO.length
 
-    def initialize(parent, x, y, _width, _height)
-      super parent, x, y, WIDTH, HEIGHT
-    end
-
     def draw
       Style.default.logo window do
         LOGO.each_with_index do |s, index|

lib/widgets/main.rb

@@ -2,11 +2,11 @@
 
 module Widgets
   class Main < Container
-    def initialize(parent, x, y, width, height)
+    def initialize(_parent)
       super
 
-      @sidebar = Widgets::Sidebar.new self, x,                  y, nil,                    height
+      @sidebar = Widgets::Sidebar.new self
-      @chat    = Widgets::Chat.new    self, x + @sidebar.width, y, width - @sidebar.width, height
+      @chat    = Widgets::Chat.new    self
     end
 
     def focus

lib/widgets/sidebar.rb

@@ -2,11 +2,11 @@
 
 module Widgets
   class Sidebar < Container
-    def initialize(parent, x, y, _width, height)
+    def initialize(_parent)
-      super parent, x, y, Logo::WIDTH, height
+      super
 
-      @logo = Logo.new self, x, y,            nil,         nil
+      @logo = Logo.new self
-      @menu = Menu.new self, x, @logo.height, @logo.width, height - @logo.height
+      @menu = Menu.new self
     end
 
     def focus
@@ -18,6 +18,7 @@ module Widgets
 
     def props=(_value)
       super
+      @logo.props = props[:logo]
       @menu.props = props[:menu]
     end