public MasterNavigator(ViewManager viewManager, FacebookService facebookService, ViewPage startupPage)
{
Verify.IsNotNull(viewManager, "viewManager");
Verify.IsNotNull(facebookService, "facebookService");
_viewManager = viewManager;
HomeNavigator = new HomePage().GetNavigator(null, facebookService.Dispatcher);
PhotoAlbumsNavigator = new PhotoAlbumCollectionNavigator(facebookService.PhotoAlbums, FacebookObjectId.Create("Photo Albums"), null);
FriendsNavigator = new ContactCollectionNavigator(facebookService.Friends, FacebookObjectId.Create("Friends"), null);
ProfileNavigator = new ContactNavigator(facebookService.MeContact, FacebookObjectId.Create("Me"), null);
_children = new[] { HomeNavigator, PhotoAlbumsNavigator, FriendsNavigator, ProfileNavigator };
Navigator startupNavigator = null;
switch (startupPage)
{
case ViewPage.Friends:
startupNavigator = FriendsNavigator;
_startupCollection = facebookService.Friends;
break;
case ViewPage.Newsfeed:
startupNavigator = HomeNavigator;
_startupCollection = facebookService.NewsFeed;
break;
case ViewPage.Photos:
startupNavigator = PhotoAlbumsNavigator;
_startupCollection = facebookService.PhotoAlbums;
break;
case ViewPage.Profile:
startupNavigator = ProfileNavigator;
_startupCollection = null;
break;
}
_loadingPage = new LoadingPage(startupNavigator);
if (_startupCollection != null)
{
_startupCollection.CollectionChanged += _SignalNewsfeedChanged;
}
else
{
_loadingPage.Signal();
}
_loginPage = new LoginPage(facebookService.ApplicationId, facebookService.ApplicationKey, _loadingPage.GetNavigator());
LoginPageNavigator = _loginPage.Navigator;
}
private void _SignalNewsfeedChanged(object sender, NotifyCollectionChangedEventArgs e)
{
_startupCollection.CollectionChanged -= _SignalNewsfeedChanged;
_loadingPage.Signal();
}