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 void ViewViewShown(IImportView sender)
{
DatabaseService databaseService = DatabaseService.GetInstance();
if (databaseService.ExamDatabaseWorker == null)
{
sender.DbInfoText = "Не удалось подключится к базе данных.";
}
else
{
sender.DbInfoText = "Подключение к базе данных установлено.";
}
}
private void ViewSearched(IImportView sender)
{
List <Question> questions = new List <Question>();
for (int i = 0; i < sender.Questions.Count; i++)
{
if (sender.Questions[i].ToString().Contains(sender.SearchText))
{
questions.Add(sender.Questions[i]);
}
}
sender.Questions = questions;
}
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 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 }");
}
}
private void ViewImported(IImportView sender)
{
Argument(sender.CurrentQuestion);
View.Close();
}
private void ViewConnectionAsked(IImportView sender)
{
sender.DbInfoText = "Не удалось подключится к базе данных.";
ApplicationController.Run <LogInDbPresenter, object>(null);
LoadExamsList(sender);
}
public ImportPresenter(IImportView importView)
{
this.importView = importView;
using WaitDialog waitDialog = new WaitDialog(Initialize);
waitDialog.ShowDialog();
}
