Class: Debrew::Menu

Inherits:
Object
  • Object
show all
Defined in:
Library/Homebrew/debrew.rb

Defined Under Namespace

Classes: Entry

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initializeMenu

Returns a new instance of Menu



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# File 'Library/Homebrew/debrew.rb', line 39

def initialize
  @entries = []
end

Instance Attribute Details

#entriesObject

Returns the value of attribute entries



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# File 'Library/Homebrew/debrew.rb', line 37

def entries
  @entries
end

#promptObject

Returns the value of attribute prompt



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# File 'Library/Homebrew/debrew.rb', line 37

def prompt
  @prompt
end

Class Method Details

.choose {|menu| ... } ⇒ Object

Yields:

  • (menu)


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# File 'Library/Homebrew/debrew.rb', line 47

def self.choose
  menu = new
  yield menu

  choice = nil
  while choice.nil?
    menu.entries.each_with_index { |e, i| puts "#{i + 1}. #{e.name}" }
    print menu.prompt unless menu.prompt.nil?

    input = $stdin.gets || exit
    input.chomp!

    i = input.to_i
    if i.positive?
      choice = menu.entries[i - 1]
    else
      possible = menu.entries.find_all { |e| e.name.start_with?(input) }

      case possible.size
      when 0 then puts "No such option"
      when 1 then choice = possible.first
      else puts "Multiple options match: #{possible.map(&:name).join(" ")}"
      end
    end
  end

  choice[:action].call
end

Instance Method Details

#choice(name, &action) ⇒ Object



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# File 'Library/Homebrew/debrew.rb', line 43

def choice(name, &action)
  entries << Entry.new(name.to_s, action)
end