46 lines
1.8 KiB
C#
46 lines
1.8 KiB
C#
// MonoGame - Copyright (C) The MonoGame Team
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// This file is subject to the terms and conditions defined in
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// file 'LICENSE.txt', which is part of this source code package.
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using System;
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namespace Microsoft.Xna.Framework
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{
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/// <summary>
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/// Provides helper methods to make it easier
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/// to safely raise events.
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/// </summary>
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internal static class EventHelpers
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{
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/// <summary>
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/// Safely raises an event by storing a copy of the event's delegate
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/// in the <paramref name="handler"/> parameter and checking it for
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/// null before invoking it.
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/// </summary>
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/// <typeparam name="TEventArgs"></typeparam>
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/// <param name="sender">The object raising the event.</param>
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/// <param name="handler"><see cref="EventHandler{TEventArgs}"/> to be invoked</param>
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/// <param name="e">The <typeparamref name="TEventArgs"/> passed to <see cref="EventHandler{TEventArgs}"/></param>
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internal static void Raise<TEventArgs>(object sender, EventHandler<TEventArgs> handler, TEventArgs e)
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where TEventArgs : EventArgs
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{
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if (handler != null)
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handler(sender, e);
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}
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/// <summary>
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/// Safely raises an event by storing a copy of the event's delegate
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/// in the <paramref name="handler"/> parameter and checking it for
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/// null before invoking it.
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/// </summary>
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/// <param name="sender">The object raising the event.</param>
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/// <param name="handler"><see cref="EventHandler"/> to be invoked</param>
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/// <param name="e">The <see cref="EventArgs"/> passed to <see cref="EventHandler"/></param>
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internal static void Raise(object sender, EventHandler handler, EventArgs e)
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{
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if (handler != null)
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handler(sender, e);
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}
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}
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}
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