public void Start()
{
if (state != State.Stopped)
{
Stop();
}
state = State.Pending;
cancellationToken = Window.SetTimeout(() =>
{
if (state != State.Pending)
{
return;
}
state = State.Running;
string currentValue = valueBounds.FormattedStartValue;
TransitionTiming currentTiming = timing;
if (continuationMode == ContinuationMode.ContinueValue || continuationMode == ContinuationMode.ContinueValueAndTime)
{
currentValue = WindowExtensions.GetComputedStyle(targetElement).GetPropertyValue(targetProperty);
}
if (continuationMode == ContinuationMode.ContinueValueAndTime)
{
double currentProgress = valueBounds.GetProgress(currentValue);
double currentProgressTiming = timing.Timing.GetTiming(currentProgress);
currentTiming = timing.AddDuration((int)(-currentProgressTiming * timing.Duration)); // also, a truncated timing curve is needed here;
}
targetElement.Style.GetTransitionDictionary().Clear(targetProperty);
targetElement.Style[targetProperty] = currentValue;
RunAsync(() =>
{
if (state == State.Running)
{
targetElement.Style.GetTransitionDictionary().Set(targetProperty, currentTiming.ToString());
targetElement.Style[targetProperty] = valueBounds.FormattedEndValue;
}
});
Window.SetTimeout(() =>
{
if (state == State.Running)
{
RaiseCompleted();
}
}, currentTiming.Delay + currentTiming.Duration);
}, delay);
}
public void Stop()
{
if (state == State.Stopped)
{
return;
}
if (state == State.Pending)
{
Window.ClearTimeout(cancellationToken);
}
else if (state == State.Running)
{
string currentValue = WindowExtensions.GetComputedStyle(targetElement).GetPropertyValue(targetProperty);
targetElement.Style.GetTransitionDictionary().Clear(targetProperty);
targetElement.Style[targetProperty] = currentValue;
}
else
{
throw new Exception("Unsupported animation state");
}
state = State.Stopped;
}
