public TeacherPresenter(Views.ITeacherView view, Model.SchoolDBEntities data, Model.IUser user, ILoginPresenter loginPresenter)
{
this.view = view;
view.Presenter = this;
this.data = data;
this.user = user;
this.loginPresenter = loginPresenter;
var teacher = user as Model.Teacher;
view.TeacherNameLabelText = teacher.teacher_firstN + ' ' + teacher.teacher_lastN;
var subject = teacher.Subjects.Select(x => Tuple.Create(x.subject_id, x.subject_name));
view.FIllInCorrespondingSubjects(subject.ToList());
view.ComboBoxSubjectSelectedIndex = -1;
view.ComboBoxStudentSelectedIndex = -1;
view.FillInGrades(new string[] { "6", "5", "4", "3", "2" });
view.FillInWhichGrade(new string[] { "8", "9", "10", "11", "12" });
}
public void OnLoginButtonClick()
{
// Check if the user input is valid, display info if not.
if (view.Username == string.Empty)
{
view.Message("Моля, въведете вашето потребителско име.", "Внимание", Views.MessageIcon.Warning);
return;
}
if (view.Pass == string.Empty)
{
view.Message("Моля, въведете вашата парола.", "Внимание", Views.MessageIcon.Warning);
return;
}
// Check if the username is in the database
Model.IUser currentUser = null;
//string typeOfUser = view.TypeOfUser;
try
{
currentUser = (data.Teachers.Where(x => x.username == view.Username).SingleOrDefault() as Model.IUser) ??
(data.Parents.Where(x => x.username == view.Username).SingleOrDefault() as Model.IUser) ??
data.Admins.Where(x => x.admin_username == view.Username).SingleOrDefault();
}
catch (System.Data.Entity.Core.EntityException)
{
view.Message("Неуспешна връзка с базата данни. Моля, опитайте отново по-късно. Съжаляваме за причиненото неудобство.", "Грешка", Views.MessageIcon.Error);
return;
}
// Display error message if there is no such user.
if (currentUser == null)
{
view.Message("Грешно потребителско име и/или парола. Моля, опитайте отново. Ако продължавате да изпитвате затруднения, свържете се с училищния администратор.", "Грешка", Views.MessageIcon.Error);
return;
}
// Instantiate a new password hashing/checking class and use it to check if the user password is correct.
Utilities.IPasswordHash passHashChecker = new Utilities.PasswordHash();
var isPasswordCorrect = passHashChecker.Verify(view.Pass, currentUser.Password);
// Disaply error if password is not correct
if (!isPasswordCorrect)
{
view.Message("Грешно потребителско име и/или парола. Моля, опитайте отново.", "Грешка", Views.MessageIcon.Error);
return;
}
// If everything is fine, hide this view and start the appropriate one. (Not implemented)
view.Hide();
//view.Close();
switch (currentUser.UserType)
{
case Model.UserType.Teacher:
Views.ITeacherView teacherView = view.CreateTeacherView();
ITeacherPresenter teacherPresenter = PresenterFactory.GetTeacherPresenter(teacherView, data, currentUser, this);
teacherPresenter.Start();
break;
case Model.UserType.Parent:
Views.IParentView parentView = view.CreateParentView();
IParentPresenter parentPresenter = PresenterFactory.GetParentPresenter(parentView, data, currentUser, this);
parentPresenter.Start();
break;
case Model.UserType.Admin:
Views.IAdminView adminView = view.CreateAdminView();
IAdminPresenter adminPresenter = PresenterFactory.GetAdminPresenter(adminView, data, currentUser, this);
adminPresenter.Start();
break;
}
}
public static ITeacherPresenter GetTeacherPresenter(Views.ITeacherView view, Model.SchoolDBEntities data, Model.IUser currentUser, ILoginPresenter loginPresenter) => new TeacherPresenter(view, data, currentUser, loginPresenter);