/// <summary>
/// Checks whether given visual is a part of Snoop's visual tree.
/// </summary>
/// <param name="visual">Visual under question</param>
/// <returns><c>true</c> if <paramref name="visual"/> belongs to Snoop's visual tree. <c>false</c> otherwise.</returns>
public static bool IsPartOfSnoopVisualTree(this Visual visual)
{
if (visual == null)
{
return(false);
}
if (SnoopAttachedProperties.GetIsSnoopPart(visual))
{
return(true);
}
foreach (var registeredSnoopVisual in registeredSnoopVisualTreeRoots.ToList())
{
if (registeredSnoopVisual.IsAlive == false)
{
registeredSnoopVisualTreeRoots.Remove(registeredSnoopVisual);
continue;
}
var snoopVisual = (Visual)registeredSnoopVisual.Target;
if (ReferenceEquals(visual, snoopVisual) ||
(visual.Dispatcher == snoopVisual.Dispatcher && visual.IsDescendantOf(snoopVisual)))
{
return(true);
}
}
return(false);
}
public AdornerContainer(UIElement adornedElement)
: base(adornedElement)
{
SnoopAttachedProperties.SetIsSnoopPart(this, true);
}