/// <summary>
/// Wait until the provided <paramref name="statePredicate"/> action returns true,
/// or the <paramref name="timeout"/> is reached (default is one second).
///
/// The <paramref name="statePredicate"/> is evaluated initially, and then each time
/// the <paramref name="renderedFragment"/> renders.
/// </summary>
/// <param name="renderedFragment">The render fragment or component to attempt to verify state against.</param>
/// <param name="statePredicate">The predicate to invoke after each render, which must returns <c>true</c> when the desired state has been reached.</param>
/// <param name="timeout">The maximum time to wait for the desired state.</param>
/// <exception cref="WaitForFailedException">Thrown if the <paramref name="statePredicate"/> throw an exception during invocation, or if the timeout has been reached. See the inner exception for details.</exception>
public static void WaitForState(this IRenderedFragmentBase renderedFragment, Func <bool> statePredicate, TimeSpan?timeout = null)
{
using var waiter = new WaitForStateHelper(renderedFragment, statePredicate, timeout);
try
{
waiter.WaitTask.Wait();
}
catch (AggregateException e)
{
throw e.InnerException;
}
}
private async Task <IRenderedComponent <KaTeX> > WaitForKatexToHaveRendered(KaTeX cut, int cutId, TimeSpan?timeout = default)
{
var icut = cut.ToIRenderedComponent(cutId, this.Services);
using var waiter = new WaitForStateHelper(icut, predicate, WaitForStateTimeout);
await waiter.WaitTask; // don't just return the task because then the waiter is disposed of too early
return(icut !);
bool predicate()
{
return(cut.markup != null);
}
}