module RubyXL::CellConvenienceMethods

def add_hyperlink(url, tooltip = nil)
  worksheet.relationship_container ||= RubyXL::OOXMLRelationshipsFile.new
  relationships = worksheet.relationship_container.relationships
  r_id = "rId#{relationships.size + 1}"
  relationships << RubyXL::Relationship.new(:id => r_id, :target => url, :target_mode => 'External',
                                            :type => RubyXL::HyperlinkRelFile::REL_TYPE)
  hyperlink = RubyXL::Hyperlink.new(:ref => self.r, :r_id => r_id)
  hyperlink.tooltip = tooltip if tooltip
  worksheet.hyperlinks ||= RubyXL::Hyperlinks.new
  worksheet.hyperlinks << hyperlink
end

def change_border(direction, weight)
  validate_worksheet
  self.style_index = workbook.modify_border(self.style_index, direction, weight)
end

def change_border_color(direction, color)
  validate_worksheet
  Color.validate_color(color)
  self.style_index = workbook.modify_border_color(self.style_index, direction, color)
end

def change_contents(data, formula_expression = nil)
  validate_worksheet
  if formula_expression then
    self.datatype = nil
    self.formula = RubyXL::Formula.new(:expression => formula_expression)
  else
    self.datatype = case data
                    when Date, Time, Numeric then nil
                    else RubyXL::DataType::RAW_STRING
                    end
  end
  data = workbook.date_to_num(data) if data.is_a?(Date) || data.is_a?(Time)
  self.raw_value = data
end

def change_fill(rgb = 'ffffff')
  validate_worksheet
  Color.validate_color(rgb)
  self.style_index = workbook.modify_fill(self.style_index, rgb)
end

def change_font_bold(bolded = false)
  validate_worksheet
  font = get_cell_font.dup
  font.set_bold(bolded)
  update_font_references(font)
end

def change_font_color(font_color = '000000')
  validate_worksheet
  Color.validate_color(font_color)
  font = get_cell_font.dup
  font.set_rgb_color(font_color)
  update_font_references(font)
end

def change_font_italics(italicized = false)
  validate_worksheet
  font = get_cell_font.dup
  font.set_italic(italicized)
  update_font_references(font)
end

def change_font_name(new_font_name = 'Verdana')
  validate_worksheet
  font = get_cell_font.dup
  font.set_name(new_font_name)
  update_font_references(font)
end

def change_font_size(font_size = 10)
  validate_worksheet
  raise 'Argument must be a number' unless font_size.is_a?(Integer) || font_size.is_a?(Float)
  font = get_cell_font.dup
  font.set_size(font_size)
  update_font_references(font)
end

def change_font_strikethrough(struckthrough = false)
  validate_worksheet
  font = get_cell_font.dup
  font.set_strikethrough(struckthrough)
  update_font_references(font)
end

def change_font_underline(underlined = false)
  validate_worksheet
  font = get_cell_font.dup
  font.set_underline(underlined)
  update_font_references(font)
end

def change_horizontal_alignment(alignment = 'center')
  validate_worksheet
  self.style_index = workbook.modify_alignment(self.style_index) { |a| a.horizontal = alignment }
end

def change_shrink_to_fit(shrink_to_fit = false)
  validate_worksheet
  self.style_index = workbook.modify_alignment(self.style_index) { |a| a.shrink_to_fit = shrink_to_fit }
end

def change_text_indent(indent)
  validate_worksheet
  self.style_index = workbook.modify_alignment(self.style_index) { |a| a.indent = indent }
end

def change_text_rotation(rot)
  validate_worksheet
  self.style_index = workbook.modify_alignment(self.style_index) { |a| a.text_rotation = rot }
end

def change_text_wrap(wrap = false)
  validate_worksheet
  self.style_index = workbook.modify_alignment(self.style_index) { |a| a.wrap_text = wrap }
end

def change_vertical_alignment(alignment = 'center')
  validate_worksheet
  self.style_index = workbook.modify_alignment(self.style_index) { |a| a.vertical = alignment }
end

def fill_color
  validate_worksheet
  return workbook.get_fill_color(get_cell_xf)
end

def font_color
  validate_worksheet
  get_cell_font.get_rgb_color || '000000'
end

def font_name
  validate_worksheet
  get_cell_font.get_name
end

def font_size
  validate_worksheet
  get_cell_font.get_size
end

def font_switch(change_type, arg)
  case change_type
  when Worksheet::NAME          then change_font_name(arg)
  when Worksheet::SIZE          then change_font_size(arg)
  when Worksheet::COLOR         then change_font_color(arg)
  when Worksheet::ITALICS       then change_font_italics(arg)
  when Worksheet::BOLD          then change_font_bold(arg)
  when Worksheet::UNDERLINE     then change_font_underline(arg)
  when Worksheet::STRIKETHROUGH then change_font_strikethrough(arg)
  else raise 'Invalid change_type'
  end
end

def get_border(direction)
  validate_worksheet
  get_cell_border.get_edge_style(direction)
end

def get_border_color(direction)
  validate_worksheet
  get_cell_border.get_edge_color(direction)
end

def horizontal_alignment
  validate_worksheet
  xf_obj = get_cell_xf
  return nil if xf_obj.alignment.nil?
  xf_obj.alignment.horizontal
end

def is_bolded
  validate_worksheet
  get_cell_font.is_bold
end

def is_italicized
  validate_worksheet
  get_cell_font.is_italic
end

def is_struckthrough
  validate_worksheet
  get_cell_font.is_strikethrough
end

def is_underlined
  validate_worksheet
  get_cell_font.is_underlined
end

def remove_formula
  self.formula = nil
  calculation_chain = workbook && workbook.calculation_chain
  calculation_cells = calculation_chain && calculation_chain.cells
  calculation_cells && calculation_cells.reject! { |c|
    c.ref.col_range.c == self.column && c.ref.row_range.begin == self.row
  }
end

def set_number_format(format_code)
  new_xf = get_cell_xf.dup
  new_xf.num_fmt_id = workbook.stylesheet.register_number_format(format_code)
  new_xf.apply_number_format = true
  self.style_index = workbook.register_new_xf(new_xf)
end

def text_indent
  validate_worksheet
  xf_obj = get_cell_xf
  return nil if xf_obj.alignment.nil?
  xf_obj.alignment.indent
end

def text_rotation
  validate_worksheet
  xf_obj = get_cell_xf
  return nil if xf_obj.alignment.nil?
  xf_obj.alignment.text_rotation
end

def text_wrap
  validate_worksheet
  xf_obj = get_cell_xf
  return nil if xf_obj.alignment.nil?
  xf_obj.alignment.wrap_text
end

def update_font_references(modified_font)
  xf = workbook.register_new_font(modified_font, get_cell_xf)
  self.style_index = workbook.register_new_xf(xf)
end

def vertical_alignment
  validate_worksheet
  xf_obj = get_cell_xf
  return nil if xf_obj.alignment.nil?
  xf_obj.alignment.vertical
end