Restore SEBPatch

SafeExamBrowser.Runtime/Operations/SessionOperation.cs

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2024 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.OperationModel;
+using SafeExamBrowser.Core.Contracts.OperationModel.Events;
+
+namespace SafeExamBrowser.Runtime.Operations
+{
+	/// <summary>
+	/// The base implementation to be used for all operations in the session operation sequence.
+	/// </summary>
+	internal abstract class SessionOperation : IRepeatableOperation
+	{
+		protected SessionContext Context { get; private set; }
+
+		public abstract event ActionRequiredEventHandler ActionRequired;
+		public abstract event StatusChangedEventHandler StatusChanged;
+
+		public SessionOperation(SessionContext context)
+		{
+			Context = context;
+		}
+
+		public abstract OperationResult Perform();
+		public abstract OperationResult Repeat();
+		public abstract OperationResult Revert();
+	}
+}