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# encoding: UTF-8
module Axlsx
# A Title stores information about the title of a chart
class Title
# The text to be shown. Setting this property directly with a string will remove the cell reference.
# @return [String]
attr_reader :text
# The cell that holds the text for the title. Setting this property will automatically update the text attribute.
# @return [Cell]
attr_reader :cell
# Creates a new Title object
# @param [String, Cell] title The cell or string to be used for the chart's title
def initialize(title="")
self.cell = title if title.is_a?(Cell)
self.text = title.to_s unless title.is_a?(Cell)
end
# @see text
def text=(v)
DataTypeValidator.validate 'Title.text', String, v
@text = v
@cell = nil
v
end
# @see cell
def cell=(v)
DataTypeValidator.validate 'Title.text', Cell, v
@cell = v
@text = v.value.to_s
v
end
# Not implemented at this time.
#def layout=(v) DataTypeValidator.validate 'Title.layout', Layout, v; @layout = v; end
#def overlay=(v) Axlsx::validate_boolean v; @overlay=v; end
#def spPr=(v) DataTypeValidator.validate 'Title.spPr', SpPr, v; @spPr = v; end
# Serializes the object
# @param [String] str
# @return [String]
def to_xml_string(str = '')
str << '<c:title>'
unless @text.empty?
str << '<c:tx>'
str << '<c:strRef>'
str << '<c:f>' << Axlsx::cell_range([@cell]) << '</c:f>'
str << '<c:strCache>'
str << '<c:ptCount val="1"/>'
str << '<c:pt idx="0">'
str << '<c:v>' << @text << '</c:v>'
str << '</c:pt>'
str << '</c:strCache>'
str << '</c:strRef>'
str << '</c:tx>'
end
str << '<c:layout/>'
str << '<c:overlay val="0"/>'
str << '</c:title>'
end
end
end
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