# File control/SetupFilter/SetupFilter.rb, line 4
  def init_context
    @driver = driver
    @control = page_option(:control)
    @factory = page_option(:factory)
    @filter_list = @control.filters
    query_params = @driver.params
    @filter_pos = query_params['pos']
    @filter_type = query_params['filter']
    @default_path = query_params['path'] || nil
    if (mask_desc = query_params['mask']) then
      mask_type, mask_value = mask_desc.split(/:/, 2)
      @default_mask_type = mask_type || nil
      @default_mask = mask_value || nil
    else
      @default_mask_type = nil
      @default_mask = nil
    end
    @default_virtual_host = query_params['vhost'] || nil
  end