Grails TagLib for Blueprint

BlueprintTagLib.groovy

/**
 * Creates blueprint taglib to use blueprint css in a nice and clean way
 * For generating css, see https://gist.github.com/1023323
 */
class BlueprintTagLib {
  static namespace = "blueprint"
  /**
   * Uses a blueprint stylesheet set
   */
  def use = { attrs, body ->
    def dir = attrs['dir']
    def condition = attrs['condition']
    def printRequired = attrs['print']
    def ieRequired = attrs['ie']

    def screen = g.resource(dir: "css/$dir", file: "screen.css")
    def ie = g.resource(dir: "css/$dir", file: "ie.css")
    def printSheet = g.resource(dir: "css/$dir", file: "print.css")

    if (condition == null) {
      out << """<link rel="stylesheet" href="$screen" media="screen"/>"""
    } else {
      out << """<link rel="stylesheet" href="$screen" media="only screen and $condition"/>"""
      if (ieRequired != null && ieRequired == 'true') {
        out << """ <!--[if IE]>\
            <link rel="stylesheet" href="$screen" media="screen, projection"/>\
          <![endif]-->"""
      } 
    }
    if (ieRequired != null && ieRequired == 'true') {
      out << """<!--[if lt IE 8]>\
          <link rel="stylesheet" href="$ie" media="screen, projection"/>\
        <![endif]-->"""
    } 
    if (printRequired != null && printRequired == 'true') {
      out << """<link rel="stylesheet" href="$printSheet" media="print"/>"""
    }
  }

}