class PrawnHtml::Tags::Tr

def add_cell(content)
  @cells << content
end

def block?
  true
end

def find_parent_of_type(klass)
  p = parent
  p = p.parent while p && !p.is_a?(klass)
  p
end

def on_context_add(_context)
  @cells = []
end

def on_context_remove(_context)
  table_parent = find_parent_of_type(PrawnHtml::Tags::Table)
  return unless table_parent
  table_parent.add_row(@cells)
  @cells = []
end