91 lines
1.9 KiB
C#
91 lines
1.9 KiB
C#
/*
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* Copyright (c) 2019 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Windows;
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using SafeExamBrowser.ResetUtility.Procedure;
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namespace SafeExamBrowser.ResetUtility
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{
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public class App : Application
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{
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private static readonly Mutex Mutex = new Mutex(true, "safe_exam_browser_reset_mutex");
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private CompositionRoot instances = new CompositionRoot();
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[STAThread]
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public static void Main()
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{
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try
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{
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StartApplication();
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}
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catch (Exception e)
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{
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MessageBox.Show(e.Message + "\n\n" + e.StackTrace, "Fatal Error", MessageBoxButton.OK, MessageBoxImage.Error);
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}
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finally
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{
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Mutex.Close();
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}
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}
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private static void StartApplication()
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{
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if (NoInstanceRunning())
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{
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new App().Run();
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}
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else
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{
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MessageBox.Show("You can only run one instance of the Reset Utility at a time.", "Startup Not Allowed", MessageBoxButton.OK, MessageBoxImage.Information);
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}
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}
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private static bool NoInstanceRunning()
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{
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return Mutex.WaitOne(TimeSpan.Zero, true);
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}
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protected override void OnStartup(StartupEventArgs e)
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{
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base.OnStartup(e);
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instances.BuildObjectGraph();
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instances.LogStartupInformation();
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MainWindow = instances.MainWindow;
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MainWindow.Show();
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Task.Run(new Action(RunApplication));
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}
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private void RunApplication()
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{
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for (var step = instances.InitialStep; ; step = step.GetNextStep())
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{
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var result = step.Execute();
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if (result == ProcedureStepResult.Terminate)
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{
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break;
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}
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}
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Dispatcher.Invoke(Shutdown);
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}
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protected override void OnExit(ExitEventArgs e)
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{
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instances.LogShutdownInformation();
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base.OnExit(e);
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}
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}
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}
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