class Redmine::MenuManager::MenuItem < Redmine::MenuManager::TreeNode
  include Redmine::I18n
  attr_reader :name, :url, :param, :condition, :parent, :child_menus, :last
  
  def initialize(name, url, options)
    raise ArgumentError, "Invalid option :if for menu item '#{name}'" if options[:if] && !options[:if].respond_to?(:call)
    raise ArgumentError, "Invalid option :html for menu item '#{name}'" if options[:html] && !options[:html].is_a?(Hash)
    raise ArgumentError, "Cannot set the :parent to be the same as this item" if options[:parent] == name.to_sym
    raise ArgumentError, "Invalid option :children for menu item '#{name}'" if options[:children] && !options[:children].respond_to?(:call)
    @name = name
    @url = url
    @condition = options[:if]
    @param = options[:param] || :id
    @caption = options[:caption]
    @html_options = options[:html] || {}
    # Adds a unique class to each menu item based on its name
    @html_options[:class] = [@html_options[:class], @name.to_s.dasherize].compact.join(' ')
    @parent = options[:parent]
    @child_menus = options[:children]
    @last = options[:last] || false
    super @name.to_sym
  end
  
  def caption(project=nil)
    if @caption.is_a?(Proc)
      c = @caption.call(project).to_s
      c = @name.to_s.humanize if c.blank?
      c
    else
      if @caption.nil?
        l_or_humanize(name, :prefix => 'label_')
      else
        @caption.is_a?(Symbol) ? l(@caption) : @caption
      end
    end
  end
  
  def html_options(options={})
    if options[:selected]
      o = @html_options.dup
      o[:class] += ' selected'
      o
    else
      @html_options
    end
  end
end