Update Safe Exam Browser Patch to 3.10.0.826

SafeExamBrowser.Server/Invigilator.cs

@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2025 ETH Zürich, IT Services
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using SafeExamBrowser.Logging.Contracts;
+using SafeExamBrowser.Server.Contracts;
+using SafeExamBrowser.Server.Contracts.Events;
+using SafeExamBrowser.Settings.Server;
+
+namespace SafeExamBrowser.Server
+{
+	public class Invigilator : IInvigilator
+	{
+		private readonly ILogger logger;
+		private readonly IServerProxy server;
+
+		private InvigilationSettings settings;
+
+		public bool IsHandRaised { get; private set; }
+
+		public event InvigilationEventHandler HandLowered;
+		public event InvigilationEventHandler HandRaised;
+
+		public Invigilator(ILogger logger, IServerProxy server)
+		{
+			this.logger = logger;
+			this.server = server;
+		}
+
+		public void Initialize(InvigilationSettings settings)
+		{
+			var raiseHand = $"Raise hand {(settings.ShowRaiseHandNotification ? "enabled" : "disabled")}";
+			var message = $"message {(settings.ForceRaiseHandMessage ? "required" : "disabled")}";
+
+			this.settings = settings;
+			server.HandConfirmed += Server_HandConfirmed;
+
+			logger.Info($"Initialized functionality: {raiseHand}, {message}.");
+		}
+
+		public void LowerHand()
+		{
+			var response = server.LowerHand();
+
+			if (response.Success)
+			{
+				IsHandRaised = false;
+				HandLowered?.Invoke();
+
+				logger.Info("Hand lowered.");
+			}
+			else
+			{
+				logger.Error($"Failed to send lower hand notification to server! Message: {response.Message}.");
+			}
+		}
+
+		public void RaiseHand(string message = null)
+		{
+			var response = server.RaiseHand(message);
+
+			if (response.Success)
+			{
+				IsHandRaised = true;
+				HandRaised?.Invoke();
+
+				logger.Info("Hand raised.");
+			}
+			else
+			{
+				logger.Error($"Failed to send raise hand notification to server! Message: {response.Message}.");
+			}
+		}
+
+		private void Server_HandConfirmed()
+		{
+			logger.Info("Hand confirmation received.");
+
+			IsHandRaised = false;
+			HandLowered?.Invoke();
+		}
+	}
+}