/// <summary>
/// Provides an extension method for IModelObject to assist in updating the fields backing the public
/// properties of the object and to call property change notification methods if a change is actually
/// going to occur.
/// </summary>
/// <typeparam name="T">The type of the field being changed (implicitly determined by the compiler).</typeparam>
/// <param name="modelObject">The IModelObject containing the propertyField and change notification methods.</param>
/// <param name="propertyField">A reference to the field backing a property or properties.</param>
/// <param name="newValue">The new value to test against and possibly set on the given propertyField.</param>
/// <param name="changeNotifyPropertyNames">Zero, one, or more property names affected by the potential propertyField update.</param>
/// <returns>True if the propertyField was actually updated to the newValue, otherwise false.</returns>
public static Boolean UpdateValueProperty <T>(this IModelObject modelObject, ref T propertyField, T newValue, params String[] changeNotifyPropertyNames)
where T : struct
{
if (!propertyField.Equals(newValue))
{
propertyField = newValue;
changeNotifyPropertyNames.Process(p => modelObject.OnPropertyChanged(new PropertyChangedEventArgs(p)));
return(true);
}
else
{
return(false);
}
}
