Module: Themizer

Defined in:
lib/themizer.rb

Constant Summary collapse

ARGUMENT_ERROR = 
"Themizer: argument error in 'init(args)': "\
"args should be Hash, "\
"args should contain ':themes' key, "\
"args[:themes] should be Array of strings"
SASS_VAR_TILDA_IMPORTANT = 
/(?<sass_var>\$[^\s:~;]*)~(?<important>[^;]*);/

Class Method Summary collapse

Class Method Details

.init(args) ⇒ Object

Raises:



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# File 'lib/themizer.rb', line 8

def init(args)
  raise ARGUMENT_ERROR unless args.class == Hash
  raise ARGUMENT_ERROR unless args[:themes]
  raise ARGUMENT_ERROR unless args[:themes].class == Array
  raise ARGUMENT_ERROR unless args[:themes].map { |e| e.to_s } == args[:themes]
  @themes = args[:themes]
  @debug = args[:debug] || false
end

.themize(action = :expand, theme = "\"\"", &block) ⇒ Object 



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# File 'lib/themizer.rb', line 17

def themize(action = :expand, theme = "\"\"", &block)
  return unless block_given?
  src_erb = _extract_block(block)
  return unless src_erb
  _debug(src_erb, "processing block")
  src_sass = ERB.new(src_erb).result

  case action
  when :expand
    maps, selectors = _mapize(src_sass)
    src_sass_expanded = maps
    unless selectors.strip.empty?
      # if you add "\"\"" to @themes, sass won't compile
      # because it cannot iterate through list with empty strings in it
      # therefore, you have to process unthemed sass separately
      src_sass_expanded << _expand_tilda(selectors, "\"\"")

      # apply & sass operator
      #
      # ".form {
      #   ...
      # }"
      # =>
      # "@each $theme in theme1, theme2 {
      #   #{$theme} { &
      #     ...
      #   }
      # }"
      src_sass_expanded << "\n@each $theme in #{@themes.join(', ')} {"
      src_sass_expanded << ".\#{$theme} { & "
      src_sass_expanded << _expand_tilda(selectors)
      src_sass_expanded << "}}"
      @themes.each do |theme|
        src_sass_expanded.gsub!(".#{theme} body", "body.#{theme}")
      end
    end

  when :contract
    src_sass_expanded = _contract_tilda(src_sass, theme)
  end

  _debug(src_sass_expanded, "resulting sass")

  yield.gsub!(src_sass, src_sass_expanded)
end

.unthemize(theme = "\"\"", &block) ⇒ Object 



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# File 'lib/themizer.rb', line 63

def unthemize(theme = "\"\"", &block)
  themize(:contract, theme, &block)
end