internal IEnumerable <Tuple <DependencyObject, DependencyProperty, int?> > GoThroughElementsToAccessProperty(PropertyPath propertyPath, DependencyObject targetBeforePath)
{
foreach (Tuple <DependencyObject, DependencyProperty, int?> element in propertyPath.INTERNAL_AccessPropertyContainer(targetBeforePath))
{
yield return(element);
}
yield break;
}
internal void GetTargetElementAndPropertyInfo(
DependencyObject targetParent,
out DependencyObject target,
out PropertyPath propertyPath,
bool isTargetParentTheTarget = false)
{
propertyPath = Storyboard.GetTargetProperty(this);
DependencyObject targetBeforePath;
if (!isTargetParentTheTarget) // "isTargetParentTheTarget" is used when running the Storyboard programmatically via Begin(), because in that case the target is defined at the storyboard level.
{
// First, see if the target element is already known:
targetBeforePath = Storyboard.GetTarget(this);
// If not, look for it based on its name:
if (targetBeforePath == null)
{
string targetName = Storyboard.GetTargetName(this);
if (targetParent is FrameworkElement fe)
{
targetBeforePath = (DependencyObject)fe.FindName(targetName);
if (targetBeforePath == null && targetParent is Control control)
{
targetBeforePath = control.GetTemplateChild(targetName);
}
}
}
}
else
{
targetBeforePath = targetParent;
}
target = targetBeforePath;
foreach (Tuple <DependencyObject, DependencyProperty, int?> element in propertyPath.INTERNAL_AccessPropertyContainer(targetBeforePath))
{
target = element.Item1;
}
}