/// <summary>
/// Retrieves all properties of a given <paramref name="targetType" /> which are inherting from
/// <see cref="BaseDataModel" />.
/// </summary>
/// <param name="targetType">The type to inspect.</param>
/// <returns>The list of properties deriving from <see cref="BaseDataModel" />.</returns>
public static IEnumerable <PropertyInfo> GetPropertiesInheritingFromBaseDataModel(Type targetType)
{
if (BaseDataModelProperties.ContainsKey(targetType))
{
// found it in the cache
return(BaseDataModelProperties[targetType]);
}
// get all public non-static properties of the target type implementing IDataErrorInfo
var result = targetType.GetProperties(BindingFlags.Public | BindingFlags.Instance).Where(p => typeof(BaseDataModel).IsAssignableFrom(p.PropertyType)).Distinct().ToList();
// update the cache
BaseDataModelProperties.TryAdd(targetType, result);
// return result
return(result);
}
/// <inheritdoc />
protected override void OnPropertyChanged(string propertyName = null)
{
base.OnPropertyChanged(propertyName);
// check if this property needs it's own validation
if (PropertiesToValidate.Any(p => p.Name.Equals(propertyName)))
{
// this property should be validated
ValidateProperty(propertyName);
}
if (IgnoreInternalModels)
{
// this view model should not handle internal BaseDataModels explicitely
return;
}
// check if this property is of type BaseDataModel too
var prop = BaseDataModelProperties.FirstOrDefault(p => p.Name.Equals(propertyName));
if (prop != null)
{
// this means there was a new instance assigned to this property
AttachChildModelHandler(prop.GetValue(this) as BaseDataModel);
}
}
