private void EnsureAsyncUpdate(SelectedElementsResourceObserver.UpdateState updateState)
{
if (this.updateState >= updateState)
{
return;
}
if (this.updateState == SelectedElementsResourceObserver.UpdateState.None)
{
UIThreadDispatcher.Instance.BeginInvoke(DispatcherPriority.Send, new Action(this.UpdateAsync));
}
this.updateState = updateState;
}
private void UpdateAsync()
{
SelectedElementsResourceObserver.UpdateState updateState = this.updateState;
this.updateState = SelectedElementsResourceObserver.UpdateState.None;
List <DocumentNode> list1 = this.oldNodesAsync;
List <DocumentNode> list2 = this.newNodesAsync;
this.oldNodesAsync = new List <DocumentNode>();
this.newNodesAsync = new List <DocumentNode>();
if (updateState == SelectedElementsResourceObserver.UpdateState.Catastrophic)
{
this.Update(this.ViewModel, SceneViewModel.ViewStateBits.EntireScene);
}
foreach (DocumentNode documentNode in list2)
{
foreach (ResourceContainer resourceContainer in this.ResourceManager.ActiveSceneViewModel == null || documentNode.DocumentRoot != this.ResourceManager.ActiveSceneViewModel.DocumentRoot ? (IEnumerable)this.ResourceManager.DocumentResourceContainers : (IEnumerable)this.ResourceManager.LocalResourceContainers)
{
if (resourceContainer.DocumentNode != null && ResourceNodeHelper.GetResourcesCollection(resourceContainer.DocumentNode).Resources == documentNode.Parent)
{
foreach (ResourceItem resourceItem in (Collection <ResourceItem>)resourceContainer.ResourceItems)
{
if (resourceItem.DocumentNode == documentNode)
{
this.AddRefItem(resourceItem);
break;
}
}
}
}
}
foreach (DocumentNode documentNode in list1)
{
foreach (ResourceItem resourceItem in (Collection <ResourceItem>) this.ResourceItems)
{
if (resourceItem.DocumentNode == documentNode)
{
this.RemoveItem(resourceItem);
break;
}
}
}
}
