h = new Handler(func, label)

    @handlerStack[@handlerStack.length - 1].innerHandlers.push(h)

    @_rerunHandler(h, null)

  _rerunHandler: (handler, patch) ->

    handler.patterns = []

  onGraph: ->

    @graph.runHandler(@update.bind(@), "row notes #{@rowIndex}")

  update: (patch) ->

    U = (x) -> @graph.Uri(x)

    notesForThisRow = []

      child.song = @song # could change, but all the notes will be rebuilt

      child.zoomInX = @zoomInX # missing binding; see onZoom

      return child      

  onZoom: ->

    for e in @children

    @graph.runHandler(@update.bind(@))

  update: ->

    U = (x) -> @graph.Uri(x)

    @effect = @graph.uriValue(@uri, U(':effectClass'))

    @effectLabel = @effect.replace(/.*\//, '')

    if @existingColorScaleSetting == null

      @colorScaleFromGraph = '#ffffff'

      @colorScale = '#ffffff'

  onDel: ->