SVG Classname Utility

svg-classname.coffee

getClass = (el) ->
  if el.hasAttribute 'class'
    el.getAttribute('class').split ' '
  else
    []

hasClass = (el, className) ->
  -1 < getClass(el).indexOf className

addClass = (el, className) ->
  unless hasClass el, className
    classList = getClass(el)
    classList.push(className)
    el.setAttribute 'class', classList.join(' ')

removeClass = (el, className) ->
  # This currently only removes one instance of the classname.
  if hasClass(el, className)
    classList = getClass(el, className)
    classList.splice(classList.indexOf(className), 1)
    el.setAttribute 'class', classList

toggleClass = (el, className) ->
  if hasClass el, className
    removeClass el, className
  else
    addClass el, className

module.exports =
  get: getClass
  has: hasClass
  add: addClass
  remove: removeClass
  toggle: toggleClass