private static void RunNextAnimation(Timeline timeline, FrameworkElement element)
{
var timelineGuid = GetTimelineGuid(timeline);
var elementGuid = GetElementGuid(element);
var active = _actives.FindActiveTimeline(timelineGuid);
active.SetAnimationState(timelineGuid, AnimationState.Completed);
// If an idle animation exists, run it
if (_actives.GetNextIdleActiveTimeline(elementGuid)?.Settings is AnimationSettings idleSettings)
{
RunAnimation(element, idleSettings, runFromIdle: true);
}
// Else if the animation is a repetitive sequence and they're all completed,
// then reset the Completed to be Idle and re-start the sequence
else if (active.IsSequence && active.IsIterating && _actives.AllIteratingCompleted(elementGuid))
{
_actives.ResetAllIteratingCompletedToIdle(elementGuid);
// Make sure to run the next iteration on visible elements only
if (element.Visibility == Visibility.Visible)
{
var first = _actives.FindFirstActiveTimeline(elementGuid);
RunAnimation(element, first.Settings, runFromIdle: true);
}
}
// Else if the animation needs to repeat, re-start it
else if (!active.IsSequence && active.IsIterating)
{
active.SetAnimationState(timelineGuid, AnimationState.Idle);
// Make sure to run the next iteration on visible elements only
if (element.Visibility == Visibility.Visible)
{
RunAnimation(element, active.Settings, runFromIdle: true);
}
}
// Else if it's done animating, clean it up
else if (active.IterationCount <= 1 && active.IterationBehavior != IterationBehavior.Forever)
{
ExecuteCompletionCommand(element, active);
Cleanup(elementGuid, stopAnimation: false);
}
}