private void LoadExamsList(IImportView view)
{
view.IsListLoading = true;
currentExamSaver = null;
view.ExamSavers = ExamsListService.GetInstance().ExamSavers;
view.IsListLoading = false;
}
private async void ViewSelectedExamChanged(IImportView sender)
{
if (!ReferenceEquals(sender.CurrentExamSaver, currentExamSaver))
{
sender.IsExamLoading = true;
sender.IsExamLoading = true;
ExamsListService examsList = ExamsListService.GetInstance();
IExamSaver saver = sender.CurrentExamSaver;
IList <Question> questions = await Task.Run(() => saver.GetQuestions());
if (questions == null)
{
sender.ShowError($"Не удалось загрузить экзамен.\nОн был удален из списка.{ Environment.NewLine }Ошибка: { saver.LastExceptionMessage }");
examsList.Remove(sender.CurrentExamSaver);
currentExamSaver = null;
sender.IsExamLoading = false;
return;
}
else
{
currentExamSaver = sender.CurrentExamSaver;
sender.Questions = questions;
sender.IsExamLoading = false;
}
}
}
private async void ViewExamChanged(IStartView sender)
{
if (!ReferenceEquals(sender.CurrentExamSaver, currentExamSaver))
{
sender.IsExamLoading = true;
ExamsListService examsList = ExamsListService.GetInstance();
IExamSaver saver = sender.CurrentExamSaver;
Exam exam = await ApplicationController.Run <LoadingContextPresenter <Exam>, Task <Exam> >(Task.Run(() => saver.GetExam())).GetTask();
if (exam == null)
{
sender.ShowError($"Не удалось загрузить экзамен.\nОн был удален из списка.{saver.LastExceptionMessage}");
try
{
examsList.Remove(sender.CurrentExamSaver);
}
catch { }
currentExamSaver = null;
sender.IsExamLoading = false;
return;
}
else
{
currentExamSaver = sender.CurrentExamSaver;
sender.CurrentExam = exam;
sender.IsExamLoading = false;
}
}
}
private async void ViewOpened(IStartView sender, OpenExamEventArgs e)
{
Exam exam = null;
IExamSaver loaded = null;
ExamsListService examsList = ExamsListService.GetInstance();
try
{
loaded = new FileExamSaver(e.FilePath, e.Password, sender.CurrentExamSaver.SaverName);
int index = examsList.ExamSavers.IndexOf(loaded);
if (index >= 0)
{
sender.CurrentExamSaver = examsList.ExamSavers[index];
currentExamSaver = examsList.ExamSavers[index];
return;
}
}
catch
{ }
loaded = new FileExamSaver(e.FilePath, e.Password, "");
exam = await Task.Run(() => loaded.GetExam());
if (exam != null)
{
loaded = new FileExamSaver(e.FilePath, e.Password, exam.Name);
examsList.Add(loaded);
sender.CurrentExam = exam;
currentExamSaver = loaded;
}
else
{
sender.ShowError($"Не удалось открыть экзамен. {loaded.LastExceptionMessage}");
}
}
private async void ViewDeleted(IStartView sender)
{
ExamsListService examsList = ExamsListService.GetInstance();
if (!await Task.Run(() => currentExamSaver.Delete()))
{
sender.ShowError("Не удалось удалить экзамен из его расположения.\nОн удален из списка.");
}
examsList.Remove(currentExamSaver);
currentExamSaver = null;
}
private void ViewViewShown(IStartView sender)
{
sender.IsListLoading = true;
currentExamSaver = null;
sender.ExamSavers = ExamsListService.GetInstance().ExamSavers;
sender.IsListLoading = false;
SessionService sessionService = SessionService.GetInstance();
if (sessionService.Session != null)
{
sessionService.Session.Abort();
sessionService.Session = null;
}
}
public ImportPresenter(IImportView view, IApplicationController applicationController) : base(view, applicationController)
{
view.ViewShown += ViewViewShown;
view.ConnectionAsked += ViewConnectionAsked;
view.FileOpened += ViewFileOpened;
view.Searched += ViewSearched;
view.SelectedExamChanged += ViewSelectedExamChanged;
view.Imported += ViewImported;
ExamsListService examsList = ExamsListService.GetInstance();
examsList.ListRefreshed += ExamsListListRefreshed;
DatabaseService databaseService = DatabaseService.GetInstance();
databaseService.ConnctionEstablished += DatabaseServiceConnctionEstablished;
databaseService.ConnctionLosted += DatabaseServiceConnctionLosted;
}
private async void ViewSavedAs(IEditSavingView sender, SaveExamEventArgs e)
{
Exam exam = GetCheckedExam();
if (exam == null)
{
return;
}
IExamSaver loaded = null;
ExamsListService examsList = ExamsListService.GetInstance();
try
{
loaded = new FileExamSaver(e.FilePath, exam.Password, exam.Name);
int index = examsList.ExamSavers.IndexOf(loaded);
if (index >= 0)
{
loaded = examsList.ExamSavers[index];
}
}
catch
{ }
if (loaded == null)
{
loaded = new FileExamSaver(e.FilePath, exam.Password, exam.Name);
}
Argument.ExamSaver = loaded;
if (await ApplicationController.Run <LoadingContextPresenter <bool>, Task <bool> >(Task.Run(() => Argument.ExamSaver.Save(exam))).GetTask())
{
examsList.Add(loaded);
IList <string> temp = View.Warnings;
temp.Add("Сохранено!");
sender.Warnings = temp;
sender.AllowSave = true;
savingFailed = false;
}
else
{
sender.ShowError($"Непредвиденная ошибка сохранения.{ Environment.NewLine }Ошибка: {Argument.ExamSaver.LastExceptionMessage}");
}
}
private async void ViewFileOpened(IImportView sender, OpenExamEventArgs e)
{
Exam exam = null;
IExamSaver loaded = null;
ExamsListService examsList = ExamsListService.GetInstance();
try
{
loaded = new FileExamSaver(e.FilePath, e.Password, sender.CurrentExamSaver.SaverName);
int index = examsList.ExamSavers.IndexOf(loaded);
if (index >= 0)
{
sender.CurrentExamSaver = examsList.ExamSavers[index];
currentExamSaver = examsList.ExamSavers[index];
return;
}
}
catch
{ }
loaded = new FileExamSaver(e.FilePath, e.Password, "");
exam = await Task.Run(() => loaded.GetExam());
if (exam != null)
{
loaded = new FileExamSaver(e.FilePath, e.Password, exam.Name);
examsList.Add(loaded);
List <Question> questions = new List <Question>();
for (int i = 0; i < exam.Tickets.Count; i++)
{
questions.AddRange(exam.Tickets[i].GetQuestions());
}
sender.Questions = questions;
currentExamSaver = loaded;
}
else
{
sender.ShowError($"Не удалось открыть экзамен.{ Environment.NewLine }Ошибка: { loaded.LastExceptionMessage }");
}
}
public StartPresenter(IStartView view, IApplicationController applicationController) : base(view, applicationController)
{
view.SessionStarted += ViewSessionStarted;
view.ViewShown += ViewViewShown;
view.ConnectionAsked += ViewConnected;
view.ExamSelectionChanged += ViewExamChanged;
view.ExamDeleted += ViewDeleted;
view.FileOpened += ViewOpened;
view.DeleteResult += ViewDeleteResult;
view.ExamEdited += ViewExamEdited;
view.ExamCreated += ViewExamCreated;
view.WatchTask += ViewWatchTask;
view.WatchResult += ViewWatchResult;
view.WatchBlank += ViewWatchBlank;
ExamsListService examsList = ExamsListService.GetInstance();
examsList.ListRefreshed += ExamsListListRefreshed;
DatabaseService databaseService = DatabaseService.GetInstance();
databaseService.ConnctionEstablished += DatabaseServiceConnctionEstablished;
databaseService.ConnctionLosted += DatabaseServiceConnctionLosted;
}
private async void ViewSavedDb(IEditSavingView sender)
{
DatabaseService databaseService = DatabaseService.GetInstance();
if (databaseService.ExamDatabaseWorker == null)
{
ApplicationController.Run <LogInDbPresenter, object>(null);
}
if (databaseService.ExamDatabaseWorker == null)
{
sender.ShowError("Подключение к базе данных не установлено.");
return;
}
ExamsListService examsState = ExamsListService.GetInstance();
Exam exam = GetCheckedExam();
if (exam == null)
{
return;
}
IExamSaver examSaver = new DatabaseExamSaver(null, exam.Name);
if (await ApplicationController.Run <LoadingContextPresenter <bool>, Task <bool> >(Task.Run(() => examSaver.Save(exam))).GetTask())
{
Argument.ExamSaver = examSaver;
examsState.Add(examSaver);
IList <string> temp = View.Warnings;
temp.Add("Сохранено!");
sender.Warnings = temp;
sender.AllowSave = true;
savingFailed = false;
}
else
{
sender.ShowError($"Непредвиденная ошибка сохранения.{ Environment.NewLine }Ошибка: {examSaver.LastExceptionMessage}");
}
}
