Restore SEBPatch

SafeExamBrowser.SystemComponents.Contracts/PowerSupply/IPowerSupplyStatus.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;
+
+namespace SafeExamBrowser.SystemComponents.Contracts.PowerSupply
+{
+	/// <summary>
+	/// Provides data about the power supply of the system.
+	/// </summary>
+	public interface IPowerSupplyStatus
+	{
+		/// <summary>
+		/// Defines the current charge of the system battery: <c>0.0</c> means the battery is empty, <c>1.0</c> means it's fully charged.
+		/// </summary>
+		double BatteryCharge { get; }
+
+		/// <summary>
+		/// Defines the current charge status of the system battery.
+		/// </summary>
+		BatteryChargeStatus BatteryChargeStatus { get; }
+
+		/// <summary>
+		/// Defines the time remaining until the battery is empty.
+		/// </summary>
+		TimeSpan BatteryTimeRemaining { get; }
+
+		/// <summary>
+		/// Indicates whether the system is connected to the power grid.
+		/// </summary>
+		bool IsOnline { get; }
+	}
+}