rtd.rb

require 'tk'

class RTD 

  def load_todos
    @todo_arr = IO.readlines("todo.txt")
  end

  def print_todos
    @todo_arr.each { |e| print e }
  end

  def get_pri(pri)
    ret=[]
    @todo_arr.each do |td| 
      ret << td if td.start_with?("(#{pri})")
    end
    return ret
  end

  def init_tk
    @root = TkRoot.new { title "Ruby To Do"}
    @top_panes = TkPanedWindow.new(@root) do
      orient 'horizontal'
      pack 'fill' => 'both',
        'expand' => 1
    end
    @bottom_panes = TkPanedWindow.new(@root) do
      orient 'horizontal'
      pack 'fill' => 'both',
        'expand' => 1
    end
    @both_panes = TkPanedWindow.new(@root) do
      width 400
      height 800
      orient 'vertical'
      pack 'fill' => 'both',
        'expand' => 1
    end
    @both_panes.add @top_panes
    @both_panes.add	@bottom_panes		  
  end

  def add_listbox(pri)
    lbox = scroll = nil
    lbox = TkListbox.new(@root) do
      width 0
      height 0
      pack 'fill' => 'both',
        'expand' => 1
    end

    scroll = TkScrollbar.new(lbox) do
      pack 'fill' => 'y',
        'side' => 'right'
      orient 'vertical'
    end
    lbox.yscrollbar(scroll)
    get_pri(pri).each do |td|
      lbox.insert 0, td
    end
    return lbox
  end

  def run
    load_todos
    init_tk
    @top_panes.add add_listbox("A")
    @top_panes.add add_listbox("B")
    @bottom_panes.add add_listbox("C")
    @bottom_panes.add add_listbox("D")
    print get_pri("A")
    #print_todos
    Tk.mainloop
  end
end

obj = RTD.new
obj.run