Restore SEBPatch

SafeExamBrowser.Proctoring/ProctoringImplementation.cs

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+/*
+* Copyright (c) 2022 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.Core.Contracts.Notifications;
+using SafeExamBrowser.Core.Contracts.Notifications.Events;
+using SafeExamBrowser.Core.Contracts.Resources.Icons;
+using SafeExamBrowser.Proctoring.Contracts.Events;
+using SafeExamBrowser.Server.Contracts.Events.Proctoring;
+
+namespace SafeExamBrowser.Proctoring
+{
+	internal abstract class ProctoringImplementation : INotification
+	{
+		internal abstract string Name { get; }
+
+		public bool CanActivate { get; protected set; }
+		public string Tooltip { get; protected set; }
+		public IconResource IconResource { get; protected set; }
+
+		internal event RemainingWorkUpdatedEventHandler RemainingWorkUpdated;
+		public event NotificationChangedEventHandler NotificationChanged;
+
+		void INotification.Activate()
+		{
+			ActivateNotification();
+		}
+
+		void INotification.Terminate()
+		{
+			TerminateNotification();
+		}
+
+		internal abstract void Initialize();
+		internal abstract void ProctoringConfigurationReceived(bool allowChat, bool receiveAudio, bool receiveVideo);
+		internal abstract void ProctoringInstructionReceived(InstructionEventArgs args);
+		internal abstract void Start();
+		internal abstract void Stop();
+		internal abstract void Terminate();
+
+		internal virtual void ExecuteRemainingWork() { }
+		internal virtual bool HasRemainingWork() => false;
+
+		protected virtual void ActivateNotification() { }
+		protected virtual void TerminateNotification() { }
+
+		protected void InvokeNotificationChanged()
+		{
+			NotificationChanged?.Invoke();
+		}
+
+		protected void InvokeRemainingWorkUpdated(RemainingWorkUpdatedEventArgs args)
+		{
+			RemainingWorkUpdated?.Invoke(args);
+		}
+	}
+}