protected override void ValidateCore()
{
base.ValidateCore();
if (this.keyFramesDirty)
{
this.RebuildKeyFrames();
this.keyFramesDirty = false;
this.OnPropertyChanged("HasAnimationVisual");
}
this.HasAnimation = false;
this.DescendantOnlyHasAnimation = false;
foreach (TimelineItem timelineItem in (Collection <TimelineItem>) this.Children)
{
AnimationTimelineItem animationTimelineItem = timelineItem as AnimationTimelineItem;
if (animationTimelineItem != null && animationTimelineItem.IsInActiveTimeline)
{
this.HasAnimation = true;
break;
}
CompoundKeyFrameTimelineItem frameTimelineItem = timelineItem as CompoundKeyFrameTimelineItem;
if (frameTimelineItem != null)
{
if (!frameTimelineItem.IsCompoundKeyFrameRoot && frameTimelineItem.HasAnimation)
{
this.HasAnimation = true;
break;
}
if (frameTimelineItem.HasAnimation || frameTimelineItem.DescendantOnlyHasAnimation)
{
this.DescendantOnlyHasAnimation = true;
}
}
}
this.OnPropertyChanged("HasAnimationVisual");
}
private void DirtyKeyFrames()
{
for (CompoundKeyFrameTimelineItem frameTimelineItem = this; frameTimelineItem != null && !frameTimelineItem.keyFramesDirty; frameTimelineItem = frameTimelineItem.Parent as CompoundKeyFrameTimelineItem)
{
frameTimelineItem.keyFramesDirty = true;
if (frameTimelineItem.IsCompoundKeyFrameRoot)
{
break;
}
}
this.Invalidate();
}