Destroy all waypoints on an element from within one of the waypoints handlers

I have a couple of waypoints attached to each 'new comment' in a list of comments that will mark the comment as read when it comes into view (either up or down). I based my code off the Inview shortcut file but that didn't cut the mustard as it didn't support the $.waypoint method of bulk attaching waypoints.

My question is, how can I destroy both the up and down waypoints on a particular element from within one of the waypoint handlers? I can't see a way of retrieving all the waypoints for a particular element in the API.

content.find('.comment').has('.metadata > span.new').waypoint
  offset: 'bottom-in-view'
  context: '.content'
  handler: (direction) ->
    comment = $(this.element)
    if direction == 'down'
      this.destroy()
      console.log 'Mark as read'

content.find('.comment').has('.metadata > span.new').waypoint
  offset: 0
  context: '.content'
  handler: (direction) ->
    comment = $(this.element)
    if direction == 'up'
      this.destroy()
      console.log 'Mark as read'

Forgive me the coffeescript ;) I also plan to DRY this all up in the end.

Solution

Turns out it was better to use the Inview shortcut as you can use its destroy() method within its handlers. The Inview destroy method destroys all of the 4 waypoint types added when one creates an Inview.

for comment in content.find('.comment').has('.metadata > span.new')
  do (comment) ->
    new Waypoint.Inview
      element: comment
      context: content[0]
      entered: (direction) ->
        this.destroy()
        console.log 'Mark as read'