Class: EasyDialog::Choises

Inherits:
Object
  • Object
show all
Defined in:
lib/easy_dialog.rb

Direct Known Subclasses

Checkbox

Instance Method Summary collapse

Constructor Details

#initialize(question, choises) ⇒ Choises

Returns a new instance of Choises.



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# File 'lib/easy_dialog.rb', line 6

def initialize question, choises
  raise unless question.class == String
  raise unless choises.class == Array
  @question = question
  @choises = choises
end

Instance Method Details

#ask ⇒ Object 



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# File 'lib/easy_dialog.rb', line 12

def ask
  width =  @choises.max_by {|s| s.length}.length + 1
  num = 80 / width
  highlight = 0
  Curses.noecho
  Curses.init_screen
  Curses.start_color
  Curses.stdscr.keypad(true)
  Curses.init_pair 1, Curses::COLOR_BLACK, Curses::COLOR_RED
  loop do
    Curses.setpos 0, 0
    Curses.attroff(Curses::A_COLOR)
    Curses.addstr(@question)
    @choises.each_with_index do |c,i|
      Curses.setpos i/num + 1, i%num*width
      if i == highlight
        Curses.attrset(Curses.color_pair(1))
      else
        Curses.attroff(Curses::A_COLOR)
      end
      Curses.addstr(c)
    end
    Curses.refresh
    case hoge = Curses.getch
    when Curses::Key::RIGHT
      highlight = highlight + 1
    when Curses::Key::LEFT
      highlight = highlight - 1
    when Curses::Key::UP
      highlight = highlight - num
    when Curses::Key::DOWN
      highlight = highlight + num
    when 27
      exit 1
    when 10
      Curses.close_screen
      return @choises[highlight]
    end
    if highlight >= @choises.length
      highlight = @choises.length - 1
    end
    highlight = 0 if highlight < 0
  end
end