/// <summary>
/// Waits until a function evaluates to <c>true</c>.
/// Shows a dialog.
/// </summary>
/// <param name="function">The function to evaluate.</param>
/// <param name="condition">The condition to evaluate on the functions return value.</param>
/// <param name="expectationText">Text that explains the function's expectation.</param>
/// <param name="negativeTimeout">The negative timeout.</param>
/// <param name="positiveTimeout">The positive timeout.</param>
/// <param name="pollingPeriod">The polling time.</param>
/// <param name="clickThrough">Whether to enable click-through mode.</param>
/// <param name="actionText">The action text.</param>
private void Forr <T>(Func <T> function, Predicate <T> condition, string expectationText, TimeSpan negativeTimeout, TimeSpan positiveTimeout, TimeSpan pollingPeriod, bool clickThrough, string actionText)
{
// init
state = State.init;
this.positiveTimeout = positiveTimeout;
this.negativeTimeout = negativeTimeout;
uic = new DialogView(negativeTimeout != TimeSpan.MaxValue, positiveTimeout != TimeSpan.MaxValue && positiveTimeout != TimeSpan.Zero, clickThrough, function != null, actionText);
// spawn
var c = new CancellationTokenSource();
Task ui = new Task(() => uic.UI(() => OnDialogLoad(expectationText, actionText), OnBadClick, OnGoodClick));
Task ti = new Task(() => Timer(c.Token));
Task po = new Task(() => Evaluator(c.Token, function, condition, pollingPeriod));
// join
ui.Start();
ti.Start();
po.Start();
ui.Wait();
c.Cancel();
ti.Wait();
po.Wait();
switch (state)
{
case State.good_userexit:
case State.good_timedout:
return;
case State.bad_timedout:
throw new DialogWaitForTimeoutException(expectationText, negativeTimeout);
case State.bad_userexit:
throw new DialogWaitForAbortedException(expectationText);
default: throw new InvalidOperationException(state.ToString());
}
}