internal static void Notify(ErrorNode errorNode)
{
var source = errorNode.Source;
if (source == null)
{
return;
}
Scope.SetHasErrors(source, errorNode.HasErrors);
var parent = VisualTreeHelper.GetParent(source);
Node childNode = errorNode;
while (parent != null)
{
if (Scope.GetForInputTypes(parent) == null)
{
break;
}
var parentNode = (Node)parent.GetValue(Scope.ErrorsProperty);
if (ShouldRemoveChildNode(parentNode, childNode))
{
parentNode.RemoveChild(childNode);
if (parentNode is ScopeNode && parentNode.Children.Count == 0)
{
Scope.SetErrors(parent, null);
}
else
{
parentNode.RefreshErrors();
}
}
else if (ShouldAddChildNode(parent, childNode, source))
{
if (parentNode == null)
{
parentNode = new ScopeNode(parent, childNode);
Scope.SetErrors(parent, parentNode);
}
else
{
parentNode.AddChild(childNode);
parentNode.RefreshErrors();
}
}
Scope.SetHasErrors(parent, parentNode?.HasErrors == true);
childNode = parentNode;
parent = VisualTreeHelper.GetParent(parent);
}
}
private static void OnScopeForChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (((InputTypeCollection)e.NewValue)?.IsInputType(d) == true)
{
if (GetErrors(d) == null)
{
SetErrors(d, ErrorNode.CreateFor(d));
}
}
else if (((InputTypeCollection)e.OldValue)?.IsInputType(d) == true)
{
d.ClearValue(ErrorsPropertyKey);
}
}
internal void Remove(ErrorNode errorNode)
{
this.Remove(errorNode.ErrorCollection);
}
internal void Add(ErrorNode errorNode)
{
this.Add(errorNode.ErrorCollection);
}
