ShrlAlgoToolkit/ShrlAlgoToolkit.RevitAddins/RvMEP/RevitCommandEndedMonitor.cs

using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Events;

namespace ShrlAlgoToolkit.RevitAddins.RvMEP;

public class RevitCommandEndedMonitor
{
    private readonly UIApplication _revitUiApplication;

    private bool _initializingCommandMonitor;

    public event EventHandler CommandEnded;

    public RevitCommandEndedMonitor(UIApplication revituiApplication)
    {
        _revitUiApplication = revituiApplication;

        _initializingCommandMonitor = true;

        _revitUiApplication.Idling += OnRevitUiApplicationIdling;
    }

    private void OnRevitUiApplicationIdling(object sender, IdlingEventArgs idlingEventArgs)
    {
        if (_initializingCommandMonitor)
        {
            _initializingCommandMonitor = false;
            return;
        }

        _revitUiApplication.Idling -= OnRevitUiApplicationIdling;

        OnCommandEnded();
    }

    protected virtual void OnCommandEnded()
    {
        CommandEnded?.Invoke(this, EventArgs.Empty);
    }
}