Class: Vnehm::UI::Menu

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

Instance Method Summary collapse

Constructor Details

#initialize {|_self| ... } ⇒ Menu

Returns a new instance of Menu.

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/vnehm/menu.rb', line 5

def initialize
  @choices = {}
  @inc_index = 1
  @items = []

  yield self
  select
end

Instance Method Details

#call_selected_block(selected) ⇒ Object 



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# File 'lib/vnehm/menu.rb', line 64

def call_selected_block(selected)
  loop do
    if @choices.keys.include? selected
      block = @choices[selected]
      block.call unless block.nil?
      break
    else
      selected = UI.ask "Вы должны выбрать одно из [#{@choices.keys.join(', ')}]"
    end
  end
end

#choice(index, desc, &block) ⇒ Object 



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# File 'lib/vnehm/menu.rb', line 14

def choice(index, desc, &block)
  # Visual index - index that you see in menu
  # Select index - index than can be selected
  # For example, if you use ':added' index
  # In menu you see 'A', but you can select it by number
  # You receive a warning though

  visual_index = select_index = index

  if index == :inc
    visual_index = select_index = @inc_index.to_s
    @inc_index += 1
  end

  if index == :added
    visual_index = 'A'.green
    select_index = @inc_index.to_s
    @inc_index += 1
  end

  @choices[select_index] = block
  @items << "#{visual_index} #{desc}"
end

#header=(value) ⇒ Object 



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# File 'lib/vnehm/menu.rb', line 38

def header=(value)
  @items.unshift(value)
end

#newline ⇒ Object 



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# File 'lib/vnehm/menu.rb', line 42

def newline
  @items << "\n"
end

#select ⇒ Object 



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# File 'lib/vnehm/menu.rb', line 46

def select
  # Add exit option
  newline
  choice('e', 'Выйти'.red) { UI.term }

  # Output items
  @items.each do |item|
    UI.say item
  end

  UI.newline

  selected = UI.ask('Введите опцию:'.yellow.freeze)
  call_selected_block(selected)

  UI.newline
end