Restore SEBPatch

SafeExamBrowser.WindowsApi.Contracts/IExplorerShell.cs

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+/*
+ * 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/.
+ */
+
+namespace SafeExamBrowser.WindowsApi.Contracts
+{
+	/// <summary>
+	/// Defines an abstraction of the Windows explorer shell (i.e. the process controlling the GUI of the operating system).
+	/// </summary>
+	public interface IExplorerShell
+	{
+		/// <summary>
+		/// Hides all currently opened windows. The explorer shell needs to be running in order to execute this operation!
+		/// </summary>
+		void HideAllWindows();
+
+		/// <summary>
+		/// Restores all previously hidden windows. The explorer shell needs to be running in order to execute this operation!
+		/// </summary>
+		void RestoreAllWindows();
+
+		/// <summary>
+		/// Starts the Windows explorer shell, if it isn't already running.
+		/// </summary>
+		void Start();
+
+		/// <summary>
+		/// Gracefully terminates the Windows explorer shell, if it is running.
+		/// </summary>
+		void Terminate();
+	}
+}