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module Axlsx
# A numeric data source for use by charts.
class NumDataSource
include Axlsx::OptionsParser
# creates a new NumDataSource object
# @option options [Array] data An array of Cells or Numeric objects
# @option options [Symbol] tag_name see tag_name
def initialize(options={})
# override these three in child classes
@data_type ||= NumData
@tag_name ||= :val
@ref_tag_name ||= :numRef
@f = nil
@data = @data_type.new(options)
if options[:data] && options[:data].first.is_a?(Cell)
@f = Axlsx::cell_range(options[:data])
end
parse_options options
end
# The tag name to use when serializing this data source.
# Only items defined in allowed_tag_names are allowed
# @return [Symbol]
attr_reader :tag_name
attr_reader :data
# allowed element tag names
# @return [Array]
def self.allowed_tag_names
[:yVal, :val, :bubbleSize]
end
# sets the tag name for this data source
# @param [Symbol] v One of the allowed_tag_names
def tag_name=(v)
Axlsx::RestrictionValidator.validate "#{self.class.name}.tag_name", self.class.allowed_tag_names, v
@tag_name = v
end
# serialize the object
# @param [String] str
def to_xml_string(str="")
str << ('<c:' << tag_name.to_s << '>')
if @f
str << ('<c:' << @ref_tag_name.to_s << '>')
str << ('<c:f>' << @f.to_s << '</c:f>')
end
@data.to_xml_string str
if @f
str << ('</c:' << @ref_tag_name.to_s << '>')
end
str << ('</c:' << tag_name.to_s << '>')
end
end
end
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