def _write_styles_file(self):
# Write the style xml file.
xf_formats = self.workbook.xf_formats
palette = self.workbook.palette
font_count = self.workbook.font_count
num_format_count = self.workbook.num_format_count
border_count = self.workbook.border_count
fill_count = self.workbook.fill_count
custom_colors = self.workbook.custom_colors
dxf_formats = self.workbook.dxf_formats
styles = Styles()
styles._set_style_properties([
xf_formats,
palette,
font_count,
num_format_count,
border_count,
fill_count,
custom_colors,
dxf_formats])
styles._set_xml_writer(self._filename('xl/styles.xml'))
styles._assemble_xml_file()
