Class: PPCurses::Menu

Inherits:
BaseMenu show all
Defined in:
lib/ppcurses/menu/Menu.rb

Overview

noinspection RubyResolve

Direct Known Subclasses

ChoiceMenu

Instance Attribute Summary collapse

Attributes inherited from BaseMenu

#menu_items, #side_wall_char, #top_bot_wall_char

Instance Method Summary collapse

Methods inherited from BaseMenu

#build_menu_items, #close, #create_window, #find_max_menu_width, #hide, #initialize, #selected_menu_name, #set_origin, #set_sub_menu

Constructor Details

This class inherits a constructor from PPCurses::BaseMenu

Instance Attribute Details

#selection ⇒ Object

Returns the value of attribute selection.



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# File 'lib/ppcurses/menu/Menu.rb', line 5

def selection
  @selection
end

Instance Method Details

#handle_menu_selection(c) ⇒ Object 



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# File 'lib/ppcurses/menu/Menu.rb', line 48

def handle_menu_selection(c)
  n_choices = @menu_items.length

  if c == KEY_UP
    (@selection == 0) ? @selection = n_choices - 1 : @selection -= 1
    self.show
    return true
  end

  if c == KEY_DOWN
    (@selection == n_choices-1) ? @selection = 0 : @selection += 1
    self.show
    return true
  end

  if c == ENTER && !@global_action.nil?

    unless @global_action.nil?
      @global_action.execute
    end

    self.show
    return true
  end

  item_consumed = @menu_items[@selection].handle_key(c)
  if item_consumed
    self.show
  end

  item_consumed
end

#menu_selection ⇒ Object 



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# File 'lib/ppcurses/menu/Menu.rb', line 30

def menu_selection

  while 1
    c = @win.getch

    not_processed = !self.handle_menu_selection(c)

    if c == ESCAPE
      self.hide
      break
    end

    @sub_menu.handle_menu_selection(c) if not_processed && @sub_menu

  end

end

#set_global_action(action) ⇒ Object 



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# File 'lib/ppcurses/menu/Menu.rb', line 25

def set_global_action(action)
  PPCurses.implements_protocol(action, %w(execute))
  @global_action = action
end

#show ⇒ Object 



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# File 'lib/ppcurses/menu/Menu.rb', line 7

def show
  @win.box(self.side_wall_char, self.top_bot_wall_char)
  y = 2
  x = 2

  (0...@menu_items.length).each { |i|
    @win.setpos(y, x)
    @win.attron(Curses::A_REVERSE) if @selection == i
    @win.addstr(@menu_items[i].display_string)
    @win.attroff(Curses::A_REVERSE) if @selection == i
    y += 1
  }

   @win.refresh

   @sub_menu.show if @sub_menu
end