gistfile1.txt

app.directive('sortable', [->
  sortClasses =
    '-1': 'sort-up'
    '1': 'sort-down'

  restrict: 'A'
  scope: {
    biDirectional: '@'
    initialDirection: '@'
    sortEventType: '@'
    sortEvent: '@'
    sortableKey: '&'
    sortCallback: '&'
    sortableCollection: '='
  }
  link: (scope, element, attrs)->
    element.addClass('sortable')
    scope.sortableKey = scope.sortableKey()
    scope.biDirectional = JSON.parse(scope.biDirectional)
    if(scope.initialDirection == 'ascending')
      scope.direction = -1
    else
      scope.direction = 1
    scope.sortEventType = 'element' unless scope.sortEventType == 'scope'
    scope.sortEvent = 'click' unless scope.sortEvent

    sortFunction = ->
      scope.sortableCollection.sort (a,b) ->
        if a[scope.sortableKey] < b[scope.sortableKey]
          -1*scope.direction
        else if a[scope.sortableKey] is b[scope.sortableKey]
          0
        else
          1*scope.direction

      if scope.biDirectional
        element.addClass(sortClasses[scope.direction.toString()])
        element.removeClass(sortClasses[(-1*scope.direction).toString()])
        scope.direction = scope.direction*-1
      scope.sortCallback()
      scope.$apply()

    if scope.sortEventType == 'element'
      element.on(scope.sortEvent, sortFunction)

    else if scope.sortEventType == 'scope'
      scope.$on(scope.sortEvent, sortFunction)
])