Pony.fm/resources/assets/scripts/app/directives/uploader.coffee

angular.module('ponyfm').directive 'uploader', [
    'upload'
    (upload) -> (scope, element) ->
        $dropzone = $(element)

        $dropzone[0].addEventListener 'dragover', (e) ->
            e.preventDefault()
            $dropzone.addClass 'file-over'

        $dropzone[0].addEventListener 'dragleave', (e) ->
            e.preventDefault()
            $dropzone.removeClass 'file-over'

        $dropzone[0].addEventListener 'drop', (e) ->
            e.preventDefault()
            $dropzone.removeClass 'file-over'

            files = e.target.files || e.dataTransfer.files
            scope.$apply -> upload.upload files
]