internal override void UpdateChildren(ChangeNotificationTracker tracker, EventArgs e)
{
if (this.PerfEventProvider != null)
{
this.PerfEventProvider.DesignerTreeViewUpdateStart();
}
// Update VisualValue when promotedProperty's got changed.
if (this.promotedProperty != null && this.promotedProperty == tracker.ParentProperty)
{
this.VisualValue = this.promotedProperty.Value;
}
if (this.Children.Count == 1 && this.Children[0] == DummyNode)
{
// If the node never expanded before, LoadChildren instead of UpdateChildren.
// Otherwise, when expanding node, the LoadChildren method won't invoke
// Then other tracking properties cannot be setup correctly.
this.InternalChildren.Remove(DummyNode);
this.LoadChildren();
}
else
{
// If requireUpdateChildren = false, the related TreeViewItemModelPropertyViewModel take care of updating child nodes.
bool requireUpdateChildren = true;
if (e is PropertyChangedEventArgs && this.IsModelPropertyNodeExisted(tracker.ParentProperty))
{
ModelProperty modelProperty = tracker.ParentProperty;
if (modelProperty.Value != null)
{
string changedPropertyName = ((PropertyChangedEventArgs)e).PropertyName;
bool isPromotedPropertyChanged = TreeViewItemViewModel.IsPromotedProperty(modelProperty.Value, changedPropertyName);
if (isPromotedPropertyChanged)
{
if (modelProperty.Value.Properties[changedPropertyName].Value != null)
{
requireUpdateChildren = false;
}
}
else
{
requireUpdateChildren = false;
}
}
}
if (requireUpdateChildren)
{
base.UpdateChildren(tracker, e);
tracker.CleanUp();
TreeViewItemViewModel.AddModelProperty(this, this.Value, tracker.ParentProperty, tracker.ParentProperty);
}
}
if (this.PerfEventProvider != null)
{
this.PerfEventProvider.DesignerTreeViewUpdateEnd();
}
}
internal override void UpdateChildren(ChangeNotificationTracker tracker, EventArgs e)
{
if (this.PerfEventProvider != null)
{
this.PerfEventProvider.DesignerTreeViewUpdateStart();
}
base.UpdateChildren(tracker, e);
tracker.CleanUp();
if (this.Value.Value != null)
{
this.AddChild(TreeViewItemViewModel.CreateViewModel(this, this.Value.Value), tracker.ParentProperty);
}
if (this.PerfEventProvider != null)
{
this.PerfEventProvider.DesignerTreeViewUpdateEnd();
}
}
internal override void UpdateChildren(ChangeNotificationTracker tracker, EventArgs e)
{
if (this.PerfEventProvider != null)
{
this.PerfEventProvider.DesignerTreeViewUpdateStart();
}
//
base.UpdateChildren(tracker, e);
tracker.CleanUp();
this.InternalChildren.Clear();
this.LoadChildren();
if (this.PerfEventProvider != null)
{
this.PerfEventProvider.DesignerTreeViewUpdateEnd();
}
}