41 lines
1.3 KiB
C#
41 lines
1.3 KiB
C#
/*
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* Copyright (c) 2023 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System.Threading.Tasks;
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namespace SafeExamBrowser.Communication.Contracts.Events
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{
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/// <summary>
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/// The default handler for communication events of an interlocutor.
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/// </summary>
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public delegate void CommunicationEventHandler();
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/// <summary>
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/// The handler with parameter for communication events of an interlocutor.
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/// </summary>
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public delegate void CommunicationEventHandler<T>(T args) where T : CommunicationEventArgs;
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public static class CommunicationEventHandlerExtensions
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{
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/// <summary>
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/// Executes the event handler asynchronously, i.e. on a separate thread.
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/// </summary>
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public static async Task InvokeAsync(this CommunicationEventHandler handler)
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{
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await Task.Run(() => handler?.Invoke());
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}
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/// <summary>
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/// Executes the event handler asynchronously, i.e. on a separate thread.
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/// </summary>
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public static async Task InvokeAsync<T>(this CommunicationEventHandler<T> handler, T args) where T : CommunicationEventArgs
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{
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await Task.Run(() => handler?.Invoke(args));
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}
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}
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}
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