private void UnionRelatedProperties(LambdaExpression[] baseRelatedProperties)
{
var relatedProperties = new HashSet <string>();
if (baseRelatedProperties != null)
{
foreach (var expression in baseRelatedProperties)
{
var propertyName = ReactiveValidationHelper.GetPropertyName(typeof(TObject), expression);
if (string.IsNullOrEmpty(propertyName) == false)
{
relatedProperties.Add(propertyName);
}
}
}
foreach (var innerValidator in _innerValidators)
{
foreach (var innerValidatorRelatedProperty in innerValidator.RelatedProperties)
{
relatedProperties.Add(innerValidatorRelatedProperty);
}
}
RelatedProperties = relatedProperties;
}
private void AddRelatedProperties(LambdaExpression[] relatedProperties)
{
if (relatedProperties?.Any() != true)
{
return;
}
foreach (var expression in relatedProperties)
{
var propertyName = ReactiveValidationHelper.GetPropertyName(typeof(TObject), expression);
if (string.IsNullOrEmpty(propertyName) == false)
{
_relatedProperties.Add(propertyName);
}
}
}
private IEnumerable <Func <TObject, TCollection, Action, IDisposable> > GetObserverBuilders()
{
var observerBuilders = new List <Func <TObject, TCollection, Action, IDisposable> >();
var propType = ReactiveValidationHelper.GetPropertyType(typeof(TObject), PropertyName);
if (typeof(INotifyPropertyChanged).IsAssignableFrom(propType) == true)
{
observerBuilders.Add((o, collection, action) => new NotifyCollectionChangedSubsriber((INotifyCollectionChanged)collection, action));
}
foreach (var propertyObservable in ValidationOptions.CollectionObservers)
{
if (propertyObservable.CanObserve(typeof(TObject), propType))
{
observerBuilders.Add(propertyObservable.CreateObserver);
}
}
return(observerBuilders);
}
/// <summary>
/// Get property name by expression for validator. Throws ArgumentException, if couldn't validate this property
/// </summary>
/// <typeparam name="TProp">The type of element of collection</typeparam>
/// <param name="property">Expression which contains property</param>
/// <returns>Property name</returns>
private static string GetPropertyNameForValidator <TProp>(Expression <Func <TObject, TProp> > property)
{
var propertyInfo = ReactiveValidationHelper.GetPropertyInfo(typeof(TObject), property);
return(propertyInfo.Name);
}
