Navigable menu

lib/widgets/menu.rb

@@ -7,6 +7,8 @@ module Widgets
 
       @logo  = Logo.new  x, y,            nil,         nil
       @items = Items.new x, @logo.height, @logo.width, nil
+
+      self.focus = @items
     end
 
     def children

lib/widgets/menu/items.rb

@@ -19,6 +19,15 @@ module Widgets
         @active = 0
       end
 
+      def trigger(event)
+        case event
+        when Events::Panel::Up
+          up
+        when Events::Panel::Down
+          down
+        end
+      end
+
       def draw
         ITEMS.each_with_index do |item, index|
           draw_item index, item
@@ -37,6 +46,14 @@ module Widgets
           Curses.addstr ' ' * (width - 2 * SIDE_PADDING)
         end
       end
+
+      def up
+        @active -= 1 if active.positive?
+      end
+
+      def down
+        @active += 1 if active < ITEMS.count - 1
+      end
     end
   end
 end

lib/widgets/window.rb

@@ -8,7 +8,7 @@ module Widgets
       @menu      = Widgets::Menu.new      0,           0, nil,                              Curses.stdscr.maxy
       @messenger = Widgets::Messenger.new @menu.width, 0, Curses.stdscr.maxx - @menu.width, Curses.stdscr.maxy
 
-      self.focus = @messenger
+      self.focus = @menu
     end
 
     def children