89 lines
2.3 KiB
C#
89 lines
2.3 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.Linq;
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using SafeExamBrowser.Client.Contracts;
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using SafeExamBrowser.I18n.Contracts;
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using SafeExamBrowser.Logging.Contracts;
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using SafeExamBrowser.Server.Contracts;
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using SafeExamBrowser.UserInterface.Contracts.Windows.Data;
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namespace SafeExamBrowser.Client.Responsibilities
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{
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internal class ServerResponsibility : ClientResponsibility
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{
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private readonly ICoordinator coordinator;
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private readonly IText text;
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private IServerProxy Server => Context.Server;
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public ServerResponsibility(ClientContext context, ICoordinator coordinator, ILogger logger, IText text) : base(context, logger)
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{
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this.coordinator = coordinator;
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this.text = text;
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}
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public override void Assume(ClientTask task)
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{
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switch (task)
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{
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case ClientTask.DeregisterEvents:
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DeregisterEvents();
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break;
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case ClientTask.RegisterEvents:
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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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if (Server != default)
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{
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Server.LockScreenConfirmed -= Server_LockScreenConfirmed;
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Server.LockScreenRequested -= Server_LockScreenRequested;
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Server.TerminationRequested -= Server_TerminationRequested;
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}
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}
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private void RegisterEvents()
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{
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Server.LockScreenConfirmed += Server_LockScreenConfirmed;
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Server.LockScreenRequested += Server_LockScreenRequested;
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Server.TerminationRequested += Server_TerminationRequested;
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}
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private void Server_LockScreenConfirmed()
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{
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Logger.Info("Closing lock screen as requested by the server...");
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Context.LockScreen?.Cancel();
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}
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private void Server_LockScreenRequested(string message)
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{
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Logger.Info("Attempting to show lock screen as requested by the server...");
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if (coordinator.RequestSessionLock())
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{
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ShowLockScreen(message, text.Get(TextKey.LockScreen_Title), Enumerable.Empty<LockScreenOption>());
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coordinator.ReleaseSessionLock();
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}
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else
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{
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Logger.Info("Lock screen is already active.");
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}
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}
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private void Server_TerminationRequested()
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{
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Logger.Info("Attempting to shutdown as requested by the server...");
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TryRequestShutdown();
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}
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}
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}
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