56 lines
1.4 KiB
C#
56 lines
1.4 KiB
C#
/*
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* Copyright (c) 2021 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;
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using SafeExamBrowser.Core.Contracts.OperationModel;
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using SafeExamBrowser.Core.Contracts.OperationModel.Events;
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namespace SafeExamBrowser.Core.Operations
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{
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/// <summary>
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/// A generic operation to allow for the (inline) definition of an operation via delegates. Useful if implementing a complete
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/// <see cref="IOperation"/> would be an unnecessary overhead.
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/// </summary>
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public class DelegateOperation : IRepeatableOperation
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{
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private Action perform;
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private Action repeat;
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private Action revert;
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public event ActionRequiredEventHandler ActionRequired { add { } remove { } }
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public event StatusChangedEventHandler StatusChanged { add { } remove { } }
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public DelegateOperation(Action perform, Action repeat = null, Action revert = null)
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{
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this.perform = perform;
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this.repeat = repeat;
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this.revert = revert;
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}
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public OperationResult Perform()
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{
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perform?.Invoke();
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return OperationResult.Success;
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}
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public OperationResult Repeat()
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{
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repeat?.Invoke();
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return OperationResult.Success;
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}
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public OperationResult Revert()
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{
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revert?.Invoke();
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return OperationResult.Success;
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}
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}
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}
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