require_relative "object_view"
require_relative "value_view"

class RegistersView < ListView

  def initialize interpreter
    @interpreter = interpreter
    @interpreter.register_event(:register_changed,  self)
    kids = []
    @interpreter.registers.each do |reg , val|
      kids << ValueView.new( val )
    end
    super(kids)
  end

  def root
    "div.registers_view"
  end

  def draw
    super()
    @element.children.each do |reg|
      elem = div("div.register_view")
      wrap_node_with reg , elem
    end
    @element
  end

  def register_changed reg , old , value
    reg = reg.symbol unless reg.is_a? Symbol
    index = reg.to_s[1 .. -1 ].to_i
    if( is_object? value )
      swap =  ObjectView.new( @interpreter, value )
    else
      swap = ValueView.new value
    end
    replace_at index , swap
  end

  def is_object?( id )
   Virtual.machine.objects[id] != nil
  end

  def calc_fields
    #puts "My id #{objects_id} , #{objects_id.class}"
    object = Virtual.machine.objects[value]
    self.fields.clear
    if object and ! object.is_a?(String)
      clazz = object.class.name.split("::").last
      #puts "found #{clazz}"
      self.fields << "#{clazz}:#{object.internal_object_length}"
      self.fields << object.get_layout
      object.get_instance_variables.each do |variable|
        f = object.get_instance_variable(variable)
        self.fields << f
      end
    end
  end

end