private void AddPresenterIfNecessary(DocumentCompositeNode visualTreeNode, SceneElement newElement)
{
Type targetType = (Type)null;
if (PlatformTypes.ContentControl.IsAssignableFrom((ITypeId)newElement.Type))
{
targetType = newElement.ViewModel.ProjectContext.ResolveType(PlatformTypes.ContentPresenter).RuntimeType;
}
else if (PlatformTypes.ItemsControl.IsAssignableFrom((ITypeId)newElement.Type))
{
targetType = newElement.ViewModel.ProjectContext.ResolveType(PlatformTypes.ItemsPresenter).RuntimeType;
}
if (!(targetType != (Type)null))
{
return;
}
DocumentNode node = visualTreeNode.SelectFirstDescendantNode(targetType);
if (node == null)
{
PanelElement panelElement = (PanelElement)this.SceneViewModel.GetSceneNode((DocumentNode)visualTreeNode);
SceneElement presenterElement = (SceneElement)this.SceneViewModel.CreateSceneNode(targetType);
SceneElement sceneElement = this.PreparePresenter(visualTreeNode, presenterElement);
GridElement gridElement = panelElement as GridElement;
if (gridElement != null)
{
int count1 = gridElement.ColumnDefinitions.Count;
int count2 = gridElement.RowDefinitions.Count;
if (count1 > 0)
{
sceneElement.SetLocalValue(GridElement.ColumnSpanProperty, (object)count1);
}
if (count2 > 0)
{
sceneElement.SetLocalValue(GridElement.RowSpanProperty, (object)count2);
}
}
panelElement.Children.Add((SceneNode)sceneElement);
}
else
{
SceneElement presenterElement = this.SceneViewModel.GetSceneNode(node) as SceneElement;
if (presenterElement == null)
{
return;
}
this.PreparePresenter(visualTreeNode, presenterElement);
}
}
