// OpenTween - Client of Twitter
// Copyright (c) 2019 kim_upsilon (@kim_upsilon)
// All rights reserved.
//
// This file is part of OpenTween.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. If not, see , or write to
// the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
// Boston, MA 02110-1301, USA.
#nullable enable
using System;
using System.Threading;
using System.Threading.Tasks;
namespace OpenTween
{
public sealed class AsyncTimer : ITimer
{
public TimeSpan DueTime { get; private set; } = Timeout.InfiniteTimeSpan;
public TimeSpan Period { get; private set; } = Timeout.InfiniteTimeSpan;
private readonly Func callback;
private readonly Timer timer;
public static event EventHandler? UnhandledException;
public AsyncTimer(Func callback)
{
this.callback = callback;
this.timer = new Timer(this.TimerCallback);
}
private async void TimerCallback(object state)
{
try
{
await this.callback().ConfigureAwait(false);
}
catch (Exception ex)
{
UnhandledException?.Invoke(this, new ThreadExceptionEventArgs(ex));
}
}
public void Change(TimeSpan dueTime, TimeSpan period)
{
this.DueTime = dueTime;
this.Period = period;
this.timer.Change(dueTime, period);
}
public void Dispose()
=> this.timer.Dispose();
}
public interface ITimer : IDisposable
{
void Change(TimeSpan dueTime, TimeSpan period);
}
}