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