/// <summary>
/// Execute a modal dialog, and wait for it to close.
/// </summary>
public Task <TResult> ExecuteModalTemplateAsync <TModel, TResult>(ModalTemplate <TModel, TResult> template, TModel model, TResult initialResult, CancellationToken cancellationToken = default)
{
if (IsModalActive(template))
{
throw new Exception("Modal already active");
}
var completionSource = new TaskCompletionSource <TResult>();
var obj = new object();
var context = new ModalTemplate <TModel, TResult> .ModalContext(model, initialResult, result =>
{
//notify modal container
var modal = ActiveModals.FirstOrDefault(m => m.Template == template);
ActiveModals.Remove(modal);
OnModalClose?.Invoke(template, new ModalEventArgs
{
Modal = modal
});
if (completionSource.Task.IsCompleted)
{
throw new Exception("Trying to close modal twice!");
}
//complete task
completionSource.SetResult(result);
}, ModalStateHasChanged, cancellationToken);
//render fragment;
var newModal = new ActiveModal()
{
Type = null,
Template = template,
ModalBody = template.ChildContent(context),
};
ActiveModals.Add(newModal);
//notify modal container
OnModalShow?.Invoke(template, new ModalEventArgs
{
Modal = newModal,
});
//return task, which completes when the modal closes
return(completionSource.Task);
}
public ActionResult ModalForm(ModalTemplate model)
{
return(View(model));
}
