Class: Mathemagical::Element

Inherits:
Object
  • Object
show all
Defined in:
lib/mathemagical/element.rb

Direct Known Subclasses

Break, Fenced, Frac, Identifier, Math, None, Number, Operator, Over, Root, Row, Space, Sqrt, SubSup, Table, Td, Text, Tr, Under

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options = {}) ⇒ Element

Returns a new instance of Element.



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# File 'lib/mathemagical/element.rb', line 6

def initialize(name, options = {})
	@name = name
	@attributes = options
	@children = []
end

Instance Attribute Details

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'lib/mathemagical/element.rb', line 3

def attributes
  @attributes
end

#children ⇒ Object (readonly)

Returns the value of attribute children.



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# File 'lib/mathemagical/element.rb', line 3

def children
  @children
end

#display_style ⇒ Object (readonly)

Returns the value of attribute display_style.



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# File 'lib/mathemagical/element.rb', line 3

def display_style
  @display_style
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/mathemagical/element.rb', line 4

def name
  @name
end

Instance Method Details

#<<(*obj) ⇒ Object 



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# File 'lib/mathemagical/element.rb', line 25

def <<(*obj)
	@children += obj.flatten.map {|o| o.is_a?(String) ? Mathemagical.encode(o) : o }

	self
end

#[](key) ⇒ Object 



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# File 'lib/mathemagical/element.rb', line 21

def [](key)
	@attributes[key.to_sym]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/mathemagical/element.rb', line 17

def []=(key, value)
	@attributes[key.to_sym] = value
end

#as_display_style ⇒ Object 



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# File 'lib/mathemagical/element.rb', line 12

def as_display_style
	@display_style = true
	self
end

#build_attributes_string ⇒ Object 



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# File 'lib/mathemagical/element.rb', line 49

def build_attributes_string
	return if @attributes.empty?

	" " + @attributes.map do |key, value|
		"#{key}='#{value}'"
	end.join(" ")
end

#child_ml ⇒ Object 



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# File 'lib/mathemagical/element.rb', line 45

def child_ml
	@children.map(&:to_s).join("\n")
end

#pop ⇒ Object 



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# File 'lib/mathemagical/element.rb', line 57

def pop
	@children.pop
end

#self_closing_xml ⇒ Object 



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# File 'lib/mathemagical/element.rb', line 35

def self_closing_xml
	"<#{@name}#{build_attributes_string} />"
end

#to_s ⇒ Object 



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# File 'lib/mathemagical/element.rb', line 31

def to_s
	children.empty? ? self_closing_xml : xml
end

#xml ⇒ Object 



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# File 'lib/mathemagical/element.rb', line 39

def xml
	"<#{@name}#{build_attributes_string}>
		#{child_ml}
	</#{@name}>".gsub(/[\n\t]/, '')
end