/// <summary>Runs the event loop for the current instance.</summary>
/// <exception cref="InvalidOperationException">The current instance is already running.</exception>
/// <exception cref="InvalidOperationException">The <see cref="ApartmentState" /> for the <see cref="Thread.CurrentThread" /> is not <see cref="ApartmentState.STA"/>.</exception>
public void Run()
{
if (Interlocked.Exchange(ref _isRunning, 1) != 0)
{
ExceptionUtilities.ThrowInvalidOperationException(nameof(IsRunning), true);
}
var currentApartmentState = Thread.CurrentThread.GetApartmentState();
if (currentApartmentState != ApartmentState.STA)
{
ExceptionUtilities.ThrowInvalidOperationException(nameof(currentApartmentState), currentApartmentState);
}
var dispatchManager = DispatchManager;
var currentDispatcher = dispatchManager.DispatcherForCurrentThread;
var previousTimestamp = dispatchManager.CurrentTimestamp;
while (_exitRequested == false)
{
currentDispatcher.DispatchPending();
var currentTimestamp = dispatchManager.CurrentTimestamp;
var delta = currentTimestamp - previousTimestamp;
var eventArgs = new IdleEventArgs(delta);
OnIdle(eventArgs);
previousTimestamp = currentTimestamp;
}
_exitRequested = false;
_isRunning = 0;
}
private void OnIdle(IdleEventArgs eventArgs)
{
Idle?.Invoke(this, eventArgs);
}