private static void UpdateParent(this DependencyObject source, IEnumerable <ValidationError> removed, IEnumerable <ValidationError> added)
{
if (source == null)
{
return;
}
var parent = VisualTreeHelper.GetParent(source) as FrameworkElement;
if (parent == null || GetForInputTypes(parent) == null)
{
return;
}
var childNode = GetNode(source) as ErrorNode;
var parentNode = GetNode(parent) as ErrorNode;
if (childNode == null)
{
return;
}
if (IsScopeFor(parent, source))
{
if (parentNode == null)
{
#pragma warning disable IDISP001, CA2000 // Dispose created. Disposed in SetNode.
parentNode = new ScopeNode(parent);
#pragma warning restore IDISP001, CA2000 // Dispose created.
}
parentNode.ChildCollection.TryAdd(childNode);
parentNode.ErrorCollection.Remove(removed);
parentNode.ErrorCollection.Add(added.Where(e => parent.IsScopeFor(e)).AsReadOnly());
SetNode(parent, parentNode);
}
else
{
if (parentNode == null)
{
return;
}
parentNode.ChildCollection.Remove(childNode);
parentNode.ErrorCollection.Remove(removed);
parentNode.ErrorCollection.Remove(childNode.Errors);
if (parentNode is ScopeNode &&
parentNode.Errors.Count == 0)
{
SetNode(parent, ValidNode.Default);
}
}
}
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 UpdateParent(this DependencyObject source, IEnumerable<ValidationError> removed, IEnumerable<ValidationError> added)
{
if (source == null)
{
return;
}
var parent = VisualTreeHelper.GetParent(source) as FrameworkElement;
if (parent == null || GetForInputTypes(parent) == null)
{
return;
}
var childNode = GetNode(source) as ErrorNode;
var parentNode = GetNode(parent) as ErrorNode;
if (childNode == null)
{
return;
}
if (IsScopeFor(parent, source))
{
if (parentNode == null)
{
parentNode = new ScopeNode(parent);
}
parentNode.ChildCollection.TryAdd(childNode);
parentNode.ErrorCollection.Remove(removed);
parentNode.ErrorCollection.Add(added.Where(e => parent.IsScopeFor(e)).AsReadOnly());
SetNode(parent, parentNode);
}
else
{
if (parentNode == null)
{
return;
}
parentNode.ChildCollection.Remove(childNode);
parentNode.ErrorCollection.Remove(removed);
parentNode.ErrorCollection.Remove(childNode.Errors);
if (parentNode is ScopeNode && parentNode.Errors.Count == 0)
{
SetNode(parent, ValidNode.Default);
}
}
}
