class ObjectView < ElementView

  def initialize interpreter , object_id
    @object_id = object_id
    @interpreter = interpreter
    @interpreter.register_event(:object_changed,  self)
  end

  def draw
    # todo, remove the DOM use
    @element = div("ul.nav!")
    add( "li" ) << div("span" , class_header(@object_id) )
    @element << div("li" , "-------------------------")
    content(@object_id).each do |con3|
      add("li") << div("a" ,  con3[0])
    end
    return @element
  end

  def object_changed reg
    puts "Object changed in #{reg}"
    for_object = @interpreter.get_register( reg )
    return unless for_object == @object_id
    puts "Object changed  #{for_object}"
    calc_fields
  end

  def marker id
    var = Virtual.machine.objects[id]
    if var.is_a? String
      str "Wo"
    else
      str = var.class.name.split("::").last[0,2]
    end
    str + " : #{id.to_s}"
  end

  def class_header(id)
    object = Virtual.machine.objects[id]
    return "" unless object
    clazz = object.class.name.split("::").last
    "#{clazz}:#{id}"
  end

  def content(id)
    object = Virtual.machine.objects[id]
    fields = []
    if object and ! object.is_a?(String)
      object.get_instance_variables.each do |variable|
        f = object.get_instance_variable(variable)
        fields << ["#{variable} : #{marker(f.object_id)}" , f.object_id]
      end
    end
    fields
  end

end