[Feature Request] OnTimeout callback for toasts

[peter-mghendi]

Is your feature request related to a problem? Please describe.
I'm trying to show the user a time-constrained action they can take. I'm trying to use Blazored.Toast for this by making use of the timeout and onclick features. However, I'd like to be able to hook into the timeout process in order to perform a different action if the toast times out without the user clicking on it.

Describe the solution you'd like
An extra parameter of type Action? on the ToastService methods:

void ShowInfo(string message, string heading = "", Action? onClick = null, Action? onTimeout = null);

Example usage:

<button class="btn btn-info" @onclick="HandleClick">
    Info Toast with custom action on click
</button>

@code {
    private void HandleClick() 
    {
         toastService.ShowInfo("Click within 5 seconds", "Click me!", 
             onClick: () => /* User clicked within 5 seconds */, 
             onTimeout: () => /* User did not click within 5 seconds */);
    }
}

Describe alternatives you've considered
Not toast related. I conditionally show a button on the DOM, and get rid of it after the desired timeout.

Additional context
If this is considered to be a valid feature request, I'm fairly certain I can help to bring it over the finish line by adding an OnTimeout handler to _countdownTimer.OnElapsed here and removing the OnTimeout handler when the toast is clicked here (so that both are not called).

[ndambuki-j]

I'd love to have this feature

[Liero]

What about when user clicks the close button, or the toast is closed programmatically (not possible right now, but most likely will be in the future)

I suggest OnClosed callback and if that's not enough, the callback pararameter can contain a Source property, or a OnTimeout callback can be implemented alongside

[peter-mghendi]

@Liero I had not considered those scenarios. Your idea makes much more sense.