Class: CssTidy::MediaSet

Inherits:
CssBase show all
Defined in:
lib/modules/css_media_set.rb

Overview

media sets live as nodes in a stylesheet when a set is added to a style sheet, the sheet adds all new nodes to the last mediaset

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from CssBase

#inspect

Constructor Details

#initialize(at_media) ⇒ MediaSet

Returns a new instance of MediaSet.



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# File 'lib/modules/css_media_set.rb', line 10

def initialize(at_media)
	# nodes can contain:
	# * ruleset
	# * comment
	@nodes = []
	@at_media = at_media
	self
end

Instance Attribute Details

#at_media ⇒ Object

Returns the value of attribute at_media.



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# File 'lib/modules/css_media_set.rb', line 8

def at_media
  @at_media
end

Instance Method Details

#<<(object) ⇒ Object 



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# File 'lib/modules/css_media_set.rb', line 19

def << (object)
	@nodes << object
end

#clear ⇒ Object 



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# File 'lib/modules/css_media_set.rb', line 81

def clear
	@nodes = []
	@at_media = ''
end

#optimize(options) ⇒ Object 



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# File 'lib/modules/css_media_set.rb', line 32

def optimize(options)
	return nil if @nodes.empty? || @at_media.empty?
	# clean up self first
    @at_media.gsub!(/\*\/\s+\/\*/, '*//*')

	# then do kids
	keep_next_comment = false

	@nodes.each_with_index do |node, idx|
		if node.class == CssTidy::Comment
			if node.is_special? && options[:keep_special_comments]
				next # do nothing
			elsif node.is_ie5_hack? && options[:keep_ie5_comment_hack]
				node.text = '\\'  # replace it
				keep_next_comment = true
			elsif keep_next_comment
				node.text = ''  # replace it
				keep_next_comment = false
			else
				node.printable = false # don't print this one
			end
		end
		node.optimize(options)
	end

	if options[:optimize_selectors]
		nodes_to_remove = []
		length = @nodes.length
		@nodes.each_with_index do |node, index|
			if node.class == CssTidy::RuleSet
				idx = index
				# Check if properties also exist in another RuleSet
				while idx < length -1
					idx += 1 # start at the next one
					# just Rulsets
					if @nodes[idx].class == CssTidy::RuleSet
						if ! node.empty? && node == @nodes[idx]
							node += @nodes[idx]
							nodes_to_remove << idx
							@nodes[idx].clear
						end
			 		end
		      end
			end
		end
	end

end

#to_s(format = :one_line, indent = '') ⇒ Object 



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# File 'lib/modules/css_media_set.rb', line 23

def to_s(format=:one_line, indent='')
	css = "#{@at_media}{" + ((format == :multi_line) ? "\n" : '')
	@nodes.each do |node|
		css << indent + node.to_s(format) + ((format == :multi_line) ? "\n" : '')
	end
	css << '}' + ((format == :multi_line) ? "\n" : '')
	css
end