hybrid_backbone_router.coffee

class App.Router extends Backbone.Router

  initialize: (options) ->
    # keep track of the first route event so that
    # loadNormally doesn't get stuck in an infinite
    # redirect loop
    @isFirstRoute = true
    @once 'route', =>
      @isFirstRoute = false

  routes:
    # replace main view
    '' : 'replaceMainView'

    # load any url to the admin normally
    'admin*path' : 'loadNormally'

    # load all urls in an overlay by default
    '*default' : 'presentOverlay'

  loadNormally: ->
    # Don't redirect if this is the first route event
    # (the page has just loaded)
    window.location = @getUrl() unless @isFirstRoute

  replaceMainView: ->
    @loadUrl @getUrl(), (data) ->
      $('#main-view').html(data)
      $('#overlay').hide()

  presentOverlay: ->
    @loadUrl @getUrl(), (data) ->
      $('#overlay').html(data).show()

  getUrl: ->
    "/#{Backbone.history.fragment}"

  loadUrl: (url, callback) ->
    $.get url, { partial: true }, (data) =>
      callback(data)