public override object Deserialize(LoadContext loadContext, System.Type objectType, System.IO.Stream stream)
{
XDocument doc = XDocument.Load(stream);
AuthorizedUser user = (from u in doc.Descendants("user")
select new AuthorizedUser
{
LoadContext = loadContext,
Id = (string)u.Attribute("id"),
UserName = (string)u.Element("name"),
Link = (string)u.Element("link")
}).FirstOrDefault();
return(user);
}
public void AuthenticateUser(Action <AuthorizedUser> completed, Action <Exception> error)
{
EnsureIsAuthenticated();
AuthorizedUser = DataManager.Current.LoadFromCache <AuthorizedUser>("authenticated_user");
// LoadFromCache returns an object even if it didn't exist in the
// cache so check one of its properties for existance vs. the object
// itself.
if (!String.IsNullOrEmpty(AuthorizedUser.Id))
{
if (completed != null)
{
completed(AuthorizedUser);
}
return;
}
// Force a network request of the AuthorizedUser because the code
// above has just confirmed it doesn't exist in the cache. This
// funky deconstruction of what a normal Load<>() does is so the
// calling code can wait on getting a "real" instance vs. an
// empty one that then pops with live data.
DataManager.Current.Refresh <AuthorizedUser>(
"authenticated_user",
user =>
{
this.AuthorizedUser = user;
if (completed != null)
{
completed(AuthorizedUser);
}
},
e =>
{
if (error != null)
{
error(e);
}
});
}
