/// <summary>
/// Updates the IsLoadedCache on the current FrameworkElement
/// </summary>
private static void UpdateIsLoadedCache(
FrameworkElement fe,
DependencyObject parent)
{
if (fe.GetValue(FrameworkElement.LoadedPendingProperty) == null)
{
// Propagate the change to your visual ancestry
if (parent != null)
{
fe.IsLoadedCache = IsLoadedHelper(parent);
}
// This is the root visual.
else if (SafeSecurityHelper.IsConnectedToPresentationSource(fe))
{
fe.IsLoadedCache = true;
}
else
{
fe.IsLoadedCache = false;
}
}
else
{
// Clear the cache if Loaded is pending
fe.IsLoadedCache = false;
}
}
// Token: 0x06000319 RID: 793 RVA: 0x00008CA5 File Offset: 0x00006EA5
private static void UpdateIsLoadedCache(FrameworkElement fe, DependencyObject parent)
{
if (fe.GetValue(FrameworkElement.LoadedPendingProperty) != null)
{
fe.IsLoadedCache = false;
return;
}
if (parent != null)
{
fe.IsLoadedCache = BroadcastEventHelper.IsLoadedHelper(parent);
return;
}
if (SafeSecurityHelper.IsConnectedToPresentationSource(fe))
{
fe.IsLoadedCache = true;
return;
}
fe.IsLoadedCache = false;
}
// Helper method that recursively queries the parents to see if they are loaded.
// This method is invoked only when the loaded cache on the given node isn't valid.
internal static bool IsParentLoaded(DependencyObject d)
{
FrameworkObject fo = new FrameworkObject(d);
DependencyObject parent = fo.EffectiveParent;
Visual visual;
Visual3D visual3D;
if (parent != null)
{
return(IsLoadedHelper(parent));
}
else if ((visual = d as Visual) != null)
{
// If parent is null then this is the root element
return(SafeSecurityHelper.IsConnectedToPresentationSource(visual));
}
else if ((visual3D = d as Visual3D) != null)
{
// IsConnectedToPresentationSource could also be modified to take
// a DO - instead though we'll just get the containing visual2D for
// this 3D object.
visual = VisualTreeHelper.GetContainingVisual2D(visual3D);
if (visual != null)
{
return(SafeSecurityHelper.IsConnectedToPresentationSource(visual));
}
else
{
return(false);
}
}
else
{
return(false);
}
}
// Token: 0x06000312 RID: 786 RVA: 0x000089EC File Offset: 0x00006BEC
internal static bool IsParentLoaded(DependencyObject d)
{
FrameworkObject frameworkObject = new FrameworkObject(d);
DependencyObject effectiveParent = frameworkObject.EffectiveParent;
if (effectiveParent != null)
{
return(BroadcastEventHelper.IsLoadedHelper(effectiveParent));
}
Visual visual;
if ((visual = (d as Visual)) != null)
{
return(SafeSecurityHelper.IsConnectedToPresentationSource(visual));
}
Visual3D reference;
if ((reference = (d as Visual3D)) != null)
{
visual = VisualTreeHelper.GetContainingVisual2D(reference);
return(visual != null && SafeSecurityHelper.IsConnectedToPresentationSource(visual));
}
return(false);
}