81 lines
2.2 KiB
C#
81 lines
2.2 KiB
C#
/*
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* Copyright (c) 2025 ETH Zürich, IT Services
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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 SafeExamBrowser.Communication.Contracts.Proxies;
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using SafeExamBrowser.I18n.Contracts;
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using SafeExamBrowser.Logging.Contracts;
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using SafeExamBrowser.Settings.Service;
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using SafeExamBrowser.UserInterface.Contracts.MessageBox;
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using SafeExamBrowser.UserInterface.Contracts.Windows;
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namespace SafeExamBrowser.Runtime.Responsibilities
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{
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internal class ServiceResponsibility : RuntimeResponsibility
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{
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private readonly IMessageBox messageBox;
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private readonly IRuntimeWindow runtimeWindow;
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private readonly IServiceProxy serviceProxy;
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private readonly Action shutdown;
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internal ServiceResponsibility(
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ILogger logger,
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IMessageBox messageBox,
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RuntimeContext runtimeContext,
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IRuntimeWindow runtimeWindow,
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IServiceProxy serviceProxy,
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Action shutdown) : base(logger, runtimeContext)
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{
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this.messageBox = messageBox;
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this.runtimeWindow = runtimeWindow;
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this.serviceProxy = serviceProxy;
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this.shutdown = shutdown;
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}
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public override void Assume(RuntimeTask task)
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{
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switch (task)
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{
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case RuntimeTask.DeregisterSessionEvents:
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DeregisterEvents();
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break;
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case RuntimeTask.RegisterSessionEvents:
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RegisterEvents();
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break;
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}
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}
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private void DeregisterEvents()
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{
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serviceProxy.ConnectionLost -= ServiceProxy_ConnectionLost;
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}
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private void RegisterEvents()
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{
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serviceProxy.ConnectionLost += ServiceProxy_ConnectionLost;
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}
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private void ServiceProxy_ConnectionLost()
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{
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if (SessionIsRunning && Session.Settings.Service.Policy == ServicePolicy.Mandatory)
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{
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Logger.Error("Lost connection to the service component!");
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Context.Responsibilities.Delegate(RuntimeTask.StopSession);
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messageBox.Show(TextKey.MessageBox_ApplicationError, TextKey.MessageBox_ApplicationErrorTitle, icon: MessageBoxIcon.Error, parent: runtimeWindow);
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shutdown.Invoke();
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}
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else
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{
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Logger.Warn("Lost connection to the service component!");
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}
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}
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}
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}
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