private void UpdateAmbientValueFromSceneElement(SceneElement element, PropertyReference propertyReference)
{
bool strictTypeCheck = true;
PropertyReference propertyReference1 = SceneNodeObjectSet.FilterProperty((SceneNode)element, propertyReference, strictTypeCheck);
if (!element.IsViewObjectValid || propertyReference1 == null || propertyReference1.PlatformMetadata != element.Platform.Metadata)
{
return;
}
AmbientPropertyManager.AmbientPropertyValue ambientPropertyValue = this.GetAmbientPropertyValue(propertyReference1.FirstStep);
if (ambientPropertyValue == null)
{
return;
}
using (element.ViewModel.ForceBaseValue())
{
if (element.IsSet(propertyReference1) == PropertyState.Unset)
{
ambientPropertyValue.Value = null;
}
else
{
DocumentNodePath valueAsDocumentNode = element.GetLocalValueAsDocumentNode(propertyReference1);
if (!this.HasValidValue(element.ViewModel, valueAsDocumentNode))
{
return;
}
ambientPropertyValue.Value = valueAsDocumentNode.Node;
}
}
}
private object InternalGetAmbientValue(ReferenceStep property, SceneNode targetNode)
{
AmbientPropertyManager.AmbientPropertyValue ambientPropertyValue = this.GetAmbientPropertyValue(property);
if (ambientPropertyValue != null)
{
if (ambientPropertyValue.Value == DependencyProperty.UnsetValue)
{
return(ambientPropertyValue.DefaultValue);
}
DocumentNode node = ambientPropertyValue.Value as DocumentNode;
if (node == null)
{
return(DependencyProperty.UnsetValue);
}
if (targetNode == null && (DocumentNodeUtilities.IsStaticResource(node) || DocumentNodeUtilities.IsDynamicResource(node) || DocumentNodeUtilities.IsTemplateBinding(node)))
{
return(ambientPropertyValue.DefaultValue);
}
DocumentCompositeNode documentCompositeNode = node as DocumentCompositeNode;
if (DocumentNodeUtilities.IsStaticResource(node) || DocumentNodeUtilities.IsDynamicResource(node))
{
DocumentNode resourceKey = ResourceNodeHelper.GetResourceKey(documentCompositeNode);
bool flag = new ExpressionEvaluator((IDocumentRootResolver)targetNode.ProjectContext).EvaluateResource(targetNode.DocumentNodePath, DocumentNodeUtilities.IsStaticResource(node) ? ResourceReferenceType.Static : ResourceReferenceType.Dynamic, resourceKey) != null;
if (!flag)
{
object instance = targetNode.ViewModel.CreateInstance(new DocumentNodePath(resourceKey, resourceKey));
if (instance != null)
{
flag = targetNode.ViewModel.FindResource(instance) != null;
}
}
if (!flag)
{
return(ambientPropertyValue.DefaultValue);
}
}
else if (DocumentNodeUtilities.IsTemplateBinding(node))
{
ExpressionEvaluator expressionEvaluator = new ExpressionEvaluator((IDocumentRootResolver)targetNode.ProjectContext);
if (documentCompositeNode == null || expressionEvaluator.EvaluateTemplateBinding(targetNode.DocumentNodePath, documentCompositeNode) == null)
{
return(ambientPropertyValue.DefaultValue);
}
}
return((object)node);
}
if (targetNode == null || !object.Equals(ambientPropertyValue.DefaultValue, targetNode.GetDefaultValueAsWpf((IPropertyId)property)))
{
return(ambientPropertyValue.DefaultValue);
}
return(DependencyProperty.UnsetValue);
}
