Make the app work with disabled cookies

Browsers disable local storage and session storage when cookies are
disabled - any call to one of those will cause an error. This commit
provides fallback storage, which will store items in memory.

assets/scripts/app/auth.coffee

@@ -9,23 +9,23 @@
     window.addEventListener('message', (e) => @receiveMessage(e))
 
   accessToken: (->
-    sessionStorage.getItem('travis.token')
+    Travis.sessionStorage.getItem('travis.token')
   ).property()
 
   # if the user is in the session storage, we're using it. if we have a flag
   # for auto signin then we're trying to sign in.
   autoSignIn: (path) ->
     console.log 'autoSignIn'
-    global  = localStorage.getItem('travis.user')
-    session = sessionStorage.getItem('travis.user')
+    global  = Travis.storage.getItem('travis.user')
+    session = Travis.sessionStorage.getItem('travis.user')
     user    = session || global
     if user
-      localStorage.setItem('travis.user', user) unless global
+      Travis.storage.setItem('travis.user', user) unless global
       data = JSON.parse(user)
       data = { user: data } unless data.user?
       @setData(data)
-    else if localStorage.getItem('travis.auto_signin')
-      console.log 'travis.auto_signin', localStorage.getItem('travis.auto_signin')
+    else if Travis.storage.getItem('travis.auto_signin')
+      console.log 'travis.auto_signin', Travis.storage.getItem('travis.auto_signin')
       @signIn()
 
   # try signing in, but check later in case we have a timeout
@@ -36,11 +36,11 @@
     Ember.run.later(this, @checkSignIn.bind(this), @timeout)
 
   signOut: ->
-    localStorage.removeItem('travis.auto_signin')
-    localStorage.removeItem('travis.locale')
-    localStorage.removeItem('travis.user')
-    localStorage.removeItem('travis.token')
-    sessionStorage.clear()
+    Travis.storage.removeItem('travis.auto_signin')
+    Travis.storage.removeItem('travis.locale')
+    Travis.storage.removeItem('travis.user')
+    Travis.storage.removeItem('travis.token')
+    Travis.sessionStorage.clear()
     @setData()
 
   trySignIn: ->
@@ -52,7 +52,7 @@
 
   forceSignIn: ->
     console.log 'forceSignIn'
-    localStorage.setItem('travis.auto_signin', 'true')
+    Travis.storage.setItem('travis.auto_signin', 'true')
     window.location = "#{@endpoint}/auth/handshake?redirect_uri=#{location}"
 
   # TODO should have clearData() to clean this up
@@ -69,26 +69,26 @@
     @get('app.router').send('afterSignIn', @readAfterSignInPath())
 
   storeToken: (token) ->
-    token = token || localStorage.getItem('travis.token')
+    token = token || Travis.storage.getItem('travis.token')
     if token
-      localStorage.setItem('travis.token', token)
-      sessionStorage.setItem('travis.token', token)
+      Travis.storage.setItem('travis.token', token)
+      Travis.sessionStorage.setItem('travis.token', token)
       @notifyPropertyChange('accessToken')
 
   storeUser: (user) ->
-    localStorage.setItem('travis.auto_signin', 'true')
-    sessionStorage.setItem('travis.user', JSON.stringify(user))
+    Travis.storage.setItem('travis.auto_signin', 'true')
+    Travis.sessionStorage.setItem('travis.user', JSON.stringify(user))
     @app.store.load(Travis.User, user)
     user = @app.store.find(Travis.User, user.id)
     user.get('permissions')
     user
 
   storeAfterSignInPath: (path) ->
-    sessionStorage.setItem('travis.after_signin_path', path)
+    Travis.sessionStorage.setItem('travis.after_signin_path', path)
 
   readAfterSignInPath: ->
-    path = sessionStorage.getItem('travis.after_signin_path')
-    sessionStorage.removeItem('travis.after_signin_path')
+    path = Travis.sessionStorage.getItem('travis.after_signin_path')
+    Travis.sessionStorage.removeItem('travis.after_signin_path')
     path
 
   receiveMessage: (event) ->

assets/scripts/app/models/broadcast.coffee

@@ -12,11 +12,15 @@ require 'travis/model'
 
   setSeen: ->
     Travis.Broadcast.seen.pushObject(@get('id'))
-    localStorage.setItem('travis.seen_broadcasts', JSON.stringify(Travis.Broadcast.seen))
+    Travis.storage.setItem('travis.seen_broadcasts', JSON.stringify(Travis.Broadcast.seen))
     @notifyPropertyChange('isSeen')
 
 @Travis.Broadcast.reopenClass
-  seen: Ember.A(JSON.parse(localStorage.getItem('travis.seen_broadcasts')) || [])
+  seen: (->
+    seenBroadcasts = Travis.storage.getItem('travis.seen_broadcasts')
+    seenBroadcasts = JSON.parse(seenBroadcasts) if seenBroadcasts?
+    Ember.A(seenBroadcasts || [])
+  )()
 
   # TODO fix or monkey-patch the adapter's url and key lookup/generation crap
   # url: 'users/broadcasts'

assets/scripts/app/models/user.coffee

@@ -71,6 +71,6 @@ require 'travis/model'
 
   setWithSession: (name, value) ->
     @set(name, value)
-    user = JSON.parse(sessionStorage?.getItem('travis.user'))
+    user = JSON.parse(Travis.sessionStorage.getItem('travis.user'))
     user[$.underscore(name)] = @get(name)
-    sessionStorage?.setItem('travis.user', JSON.stringify(user))
+    Travis.sessionStorage.setItem('travis.user', JSON.stringify(user))

assets/scripts/app/slider.coffee

@@ -1,10 +1,10 @@
 @Travis.Slider = ->
-  @minimize() if localStorage?.getItem('travis.maximized') == 'true'
+  @minimize() if Travis.storage.getItem('travis.maximized') == 'true'
   this
 
 $.extend Travis.Slider.prototype,
   persist: ->
-    localStorage?.setItem('travis.maximized', @isMinimized())
+    Travis.storage.setItem('travis.maximized', @isMinimized())
 
   isMinimized: ->
     return $('body').hasClass('maximized');

assets/scripts/lib/travis/ajax.coffee

@@ -15,7 +15,7 @@ jQuery.support.cors = true
     endpoint = Travis.config.api_endpoint || ''
     options = options || {}
 
-    if token = sessionStorage.getItem('travis.token')
+    if token = Travis.sessionStorage.getItem('travis.token')
       options.headers ||= {}
       options.headers['Authorization'] ||= "token #{token}"
 

assets/scripts/travis.coffee

@@ -13,6 +13,22 @@ if window.history.state == undefined
     window.history.state = state
     oldReplaceState.apply this, arguments
 
+# TODO: how can I put it in Travis namespace and use immediately?
+Storage = Em.Object.extend
+  init: ->
+    @set('storage', {})
+  key: (key) ->
+    "__#{key.replace('.', '__')}"
+  getItem: (k) ->
+    return @get("storage.#{@key(k)}")
+  setItem: (k,v) ->
+    @set("storage.#{@key(k)}", v)
+  removeItem: (k) ->
+    @setItem(k, null)
+  clear: ->
+    @set('storage', {})
+
+
 @Travis = Em.Namespace.create Ember.Evented,
   config:
     api_endpoint: $('meta[rel="travis.api_endpoint"]').attr('href')
@@ -48,16 +64,39 @@ if window.history.state == undefined
   setLocale: (locale) ->
     return unless locale
     I18n.locale = locale
-    localStorage.setItem('travis.locale', locale)
+    @storage.setItem('travis.locale', locale)
 
   needsLocaleChange: (locale) ->
     I18n.locale != locale
 
+  storage: (->
+    storage = null
+    try
+      storage = window.localStorage || throw('no storage')
+    catch err
+      storage = Storage.create()
+
+    storage
+  )()
+
+  sessionStorage: (->
+    storage = null
+    try
+      # firefox will not throw error on access for sessionStorage var,
+      # you need to actually get something from session
+      sessionStorage.getItem('foo')
+      storage = sessionStorage
+    catch err
+      storage = Storage.create()
+
+    storage
+  )()
+
   run: (attrs) ->
     location.href = location.href.replace('#!/', '') if location.hash.slice(0, 2) == '#!'
 
     I18n.fallbacks = true
-    @setLocale localStorage.getItem('travis.locale') || 'en'
+    @setLocale @storage.getItem('travis.locale') || 'en'
 
     Ember.run.next this, ->
       app = Travis.App.create(attrs || {})