require "gtk3"
include   Gtk
    class FileMenuItem < Gtk::MenuItem
    def initialize(label, folder)
      super()
      set_label label
      @file = "#{folder}/#{label}"
    end

    attr_reader :file
  end
  BPE = 'button-press-event'

  class MenuWithText < Gtk::Menu
    def initialize(_i)
      super()
      pwd = Dir.pwd
      Dir.glob('*') do |i|
        menu_item = FileMenuItem.new(i, pwd)
        menu_item.signal_connect(BPE) do |menu_item|
          button = menu_item
          $foo.buffer.text = File.read button.file
          false
        end
        append menu_item
        if test 'd', i
          Dir.chdir("#{pwd}/#{i}")
          menu_item.set_submenu(MenuWithText.new(i))
          Dir.chdir(pwd)
        end
      end
    end; end

  class SpecialMenuBar < Gtk::MenuBar
    def initialize(labels)
      super()

      labels.length.times do |m|
        e = MenuItem.new
        e.set_label labels[m]
        e.set_submenu MenuWithText.new labels[m]
        add e
      end
    end
  end

  class CTextView < Gtk::TextView
    def initialize(text)
      super()
      buffer = Gtk::TextBuffer.new
      buffer.set_text text
      set_buffer buffer
    end
  end

  class Menumaker < Gtk::Window
    def initialize(_arg)
      puts 5
      box = Box.new :vertical
      super()
      b = { 'Examples' => MenuWithText, 'About' => CTextView } # , "Contribute"=>CTextView, "Donate"=>CTextView, "Help"=>CTextView}
      a = []
      b.each do |_k, v|
        if v == MenuWithText

          box.add SpecialMenuBar.new b.keys
        else
          box.add($foo = CTextView.new(''))
        end
      end

      $foo.buffer.text = File.read 'README'

      add box
    end
  end

  a = Menumaker.new ''
  a.show_all
  Gtk.main









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