vendor/assets/javascripts/calendarApplication.js.coffee in event_cal-1.2 vs vendor/assets/javascripts/calendarApplication.js.coffee in event_cal-1.2.1

@@ -1,11 +1,33 @@
 class CalendarApplication
   calendarElements =
     'ul.dates': CalendarDatesController
     'ul.event_details': CalendarEventsController
 
-  @initialize = () ->
+  @initialize = (options = {}) ->
     for element, controller of calendarElements
       for el in $(element)
         new controller($(el))
+
+    if options.history
+      @initializeHistory(options.basePath)
+
+  @initializeHistory = (basePath) ->
+    CalendarDate.all().map(
+      (date) ->
+        date.element.bind('click', (event) ->
+          window?.history?.pushState(
+            { dateObjectId: date.id },
+            null,
+            "#{basePath}/#{date.toPath()}"
+          )
+        )
+    )
+
+    window?.onpopstate = (event) ->
+      if event.state?.dateObjectId?
+        date = CalendarDate.find(event.state.dateObjectId)
+        date.trigger('activate')
+        CalendarDate.deactivateAllDates()
+        date.updateAttributes(active: true)
 
 window.CalendarApplication = CalendarApplication