Class: Ifilter::Interface

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

Instance Method Summary collapse

Constructor Details

#initialize(name, array) ⇒ Interface

Returns a new instance of Interface.



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# File 'lib/ifilter/interface.rb', line 5

def initialize(name, array)
  @prompt = "#{name}> "
  @targets = array

  @input = Input.new
  @outputs = []
  @cursor_position = 1

  Curses.init_screen
  Curses.crmode
  Curses.noecho
  @window = Curses::Window.new(Curses.lines, Curses.cols, 0, 0)
  @window.keypad(true)
end

Instance Method Details

#grep ⇒ Object 



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# File 'lib/ifilter/interface.rb', line 20

def grep
  output_line(@prompt)
  output_choises
  reset_cursor_position

  loop do
    key = @window.getch
    keycode = get_keycode(key)

    if key.class == String
      @input << key

    # <BS>
    elsif key == 127
      @input.backspace!

    # <CR>
    elsif keycode == :KEY_CTRL_J
      if @outputs.size >= @cursor_position && @cursor_position >= 1
        break
      else
        next
      end

    elsif keycode == :KEY_DOWN
      down_cursor_position
      next

    elsif keycode == :KEY_UP
      up_cursor_position
      next

    # Ignore other keys
    else
      next
    end

    # Initialize a window
    @outputs = []
    @window.clear
    reset_cursor_position

    output_line(@prompt + @input.to_s)
    output_choises
    reset_cursor_position
  end

  Curses.close_screen
  @outputs[@cursor_position - 1]

# <C-c>
rescue Interrupt
  Curses.close_screen
end