Restore SEBPatch

SafeExamBrowser.SystemComponents.Contracts/Registry/IRegistry.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/.
+ */
+
+using System.Collections.Generic;
+using SafeExamBrowser.SystemComponents.Contracts.Registry.Events;
+
+namespace SafeExamBrowser.SystemComponents.Contracts.Registry
+{
+	/// <summary>
+	/// Provides functionality related to the Windows registry.
+	/// </summary>
+	public interface IRegistry
+	{
+		/// <summary>
+		/// Fired when a registry value previously registred via <see cref="StartMonitoring(string, string)"/> has changed.
+		/// </summary>
+		event RegistryValueChangedEventHandler ValueChanged;
+
+		/// <summary>
+		/// Starts monitoring the specified registry value.
+		/// </summary>
+		void StartMonitoring(string key, string name);
+
+		/// <summary>
+		/// Stops the monitoring of all previously registered registry values.
+		/// </summary>
+		void StopMonitoring();
+
+		/// <summary>
+		/// Stops the monitoring of the specified registry value.
+		/// </summary>
+		void StopMonitoring(string key, string name);
+
+		/// <summary>
+		/// Attempts to read the value of the given name under the specified registry key.
+		/// </summary>
+		bool TryRead(string key, string name, out object value);
+
+		/// <summary>
+		/// Attempts to read the value names of the given registry key.
+		/// </summary>
+		bool TryGetNames(string key, out IEnumerable<string> names);
+
+		/// <summary>
+		/// Attempts to read the subkey names of the given registry key.
+		/// </summary>
+		bool TryGetSubKeys(string key, out IEnumerable<string> subKeys);
+	}
+}