/// <summary>
/// It is intended to be used as the implementation of the <b>set</b> accessors of the properties on the inheritor ViewModel class. It returns the value set using <see cref="SetValue{T}(T, string)"/>
/// </summary>
/// <typeparam name="T">Type of the property</typeparam>
/// <param name="value">The value assigned to the property</param>
/// <param name="propertyName">Name of the property</param>
/// <remarks>
/// This method ensures the following in order:
/// - Apply validations on the property. <see cref="ViewModelPropertyDescriptor{TOwner, TResult}.ValidateAlways"/>, <see cref="HasErrors"/>, <see cref="GetValidationResults(string)"/>
/// - Apply coerce on new values
/// - Validate coerced values if desired
/// - Assign value to the property
/// - Apply value setters on the property
/// - Record the property set if the property assignation is in an edition scope
/// - Notify property change when property is not in an edition scope
/// </remarks>
protected virtual bool SetValue <T>(T value, [CallerMemberName] string propertyName = null)
{
if (!_values.TryGetValue(propertyName, out IViewModelProperty prop))
{
if (!PropertyDescriptors.ContainsKey(propertyName))
{
PropertyDescriptors.Add(propertyName, new ViewModelPropertyDescriptor <TInheritor, T>(propertyName));
}
prop = new ViewModelProperty <TInheritor, T>();
_values.Add(propertyName, prop);
}
return(((ViewModelProperty <TInheritor, T>)prop).SetValue((TInheritor)this, propertyName, value));
}
protected virtual void SetCollection <T>(T collection, [CallerMemberName] string propertyName = null)
where T : ICollection, INotifyCollectionChanged
{
if (!_values.TryGetValue(propertyName, out IViewModelProperty prop))
{
if (!PropertyDescriptors.ContainsKey(propertyName))
{
PropertyDescriptors.Add(propertyName, new ViewModelCollectionPropertyDescriptor <TInheritor, T>(propertyName));
}
prop = new ViewModelCollectionProperty <TInheritor, T>();
_values.Add(propertyName, prop);
}
((ViewModelCollectionProperty <TInheritor, T>)prop).SetValue((TInheritor)this, propertyName, collection);
}