/// <summary>
/// makes logout
/// normally this is called from window (application) close
/// </summary>
public void ClearSession() {
using (JolTudomEWSClient WSClient = new JolTudomEWSClient()) {
try {
if (!string.IsNullOrEmpty(_Token)) {
WSClient.Logout(_Token);
_Token = string.Empty;
LoggedInUser = null;
}
}
catch (FaultException<ExceptionDetail> exc) {
// this is OK, the session is expired, or not available
if (!ExceptionHandler.IsSessionNotAvailableException(exc)) {
// otherwise throw the exception
throw;
}
}
}
}
public bool Login(string username, string password, out string ErrorMess) {
ErrorMess = string.Empty;
using (JolTudomEWSClient WSClient = new JolTudomEWSClient()) {
try {
PersonDetails pd = new PersonDetails();
_Token = WSClient.Login(out pd, username, password);
LoggedInUser = pd;
Messenger.Default.Send<AfterLoginLogoutMessage>(new AfterLoginLogoutMessage());
Messenger.Default.Send<NavigationMessage>(new NavigationMessage { View = ViewEnum.Student });
}
catch (FaultException fe) {
ErrorMess = fe.Message;
}
}
return ErrorMess == string.Empty;
}
/// <summary>
/// makes logout, and navigates to Login View
/// </summary>
public void Logout() {
using (JolTudomEWSClient WSClient = new JolTudomEWSClient()) {
try {
WSClient.Logout(_Token);
_Token = string.Empty;
LoggedInUser = null;
Messenger.Default.Send<AfterLoginLogoutMessage>(new AfterLoginLogoutMessage());
Messenger.Default.Send<NavigationMessage>(new NavigationMessage { View = ViewEnum.Login });
}
catch (FaultException<ExceptionDetail> exc) {
// this is OK, the session is expired, or not available
if (ExceptionHandler.IsSessionNotAvailableException(exc)) {
Messenger.Default.Send<AfterLoginLogoutMessage>(new AfterLoginLogoutMessage());
Messenger.Default.Send<NavigationMessage>(new NavigationMessage { View = ViewEnum.Login, UserState = "SessionExpired" });
}
else
// otherwise throw the exception
throw;
}
}
}
public StudentViewModel(WSManager ds):base(ds) {
NumberQuestion = 15;
if (IsInDesignMode) {
_LoggedInPerson = new PersonDetails() { PersonID = 1, FirstName = "jozsika" };
TestResultCaption = string.Format("Eddigi Tesztek Eredményei: {0}", _LoggedInPerson.TreeDisplayName);
ErrorMsg = "Ez meg az error";
ShowPersonList = true;
StatisticList = new ObservableCollection<Statistics>();
StatisticList.Add(new Statistics {
Generated = DateTime.Now,
TestID = 2,
Questions = 15,
CorrectAnswer = 3,
Percent = 3,
TotalTime = TimeSpan.FromSeconds(69)
});
PersonTreeList = new List<PersonRole>();
PersonTreeList.Add(new PersonRole { RoleName = "Saját", Children = new List<PersonDetails>() { _LoggedInPerson } });
PersonTreeList.Add(new PersonRole { RoleName = "Diák", Children = new List<PersonDetails>() { new PersonDetails { FirstName = "vki", LastName = "vki" } } });
}
else {
}
}
protected override void LoadData() {
try {
// show the New Test Start controls if we have error message from the Test Execution initialization
// otherwise hide it
IsNewTestExpanded = !string.IsNullOrEmpty(ErrorMsg);
// has to save the ErrorMsg to temp variable
// because if the StudentView is called back from TestExecution, but we had error there at NewTest
// the Error from that VM has to show here
var olderror = ErrorMsg;
_LoggedInPerson = (PersonDetails)_DataService.LoggedInUser;
if (_LoggedInPerson.RoleEnum == PersonRoleEnum.Student) {
// this is the student
TestResultCaption = string.Format("Eddigi Tesztek Eredményei: {0}", _LoggedInPerson.TreeDisplayName);
ShowPersonList = false;
StatisticList = new ObservableCollection<Statistics>(_DataService.GetStatistics(null));
}
else if (_LoggedInPerson.RoleEnum == PersonRoleEnum.Teacher) {
// this is teacher
ShowPersonList = true;
// ask only for students
PersonTreeList = _DataService.GetUsers((int)PersonRoleEnum.Student);
SelectedUser = PersonTreeList.Find(p => p.RoleName == "Saját").Children[0];
}
else if (_LoggedInPerson.RoleEnum == PersonRoleEnum.Admin) {
// this is admin
ShowPersonList = true;
// ask for everybody
PersonTreeList = _DataService.GetUsers(null);
SelectedUser = PersonTreeList.Find(p => p.RoleName == "Saját").Children[0];
}
CourseList = _DataService.GetCourses();
ErrorMsg = olderror;
}
catch (SessionExpiredException) {
MessengerInstance.Send<NavigationMessage>(new NavigationMessage { View = ViewEnum.Login, UserState = "SessionExpired" });
}
}