/// <summary> Registers a read-only view model property.
/// </summary>
/// <param name="name">The name of the property.</param>
/// <param name="propertyType">Type of the property.</param>
/// <param name="ownerType">Type of the owner.</param>
/// <param name="typeMetadata">The type metadata.</param>
/// <param name="validateValueCallback">The validate value callback.</param>
/// <returns></returns>
/// <remarks></remarks>
public static ViewModelPropertyKey RegisterReadOnly(string name, Type propertyType, Type ownerType, ViewModelMetadata typeMetadata, ValidateValueCallback validateValueCallback)
{
var property = new ModelProperty(name, propertyType, ownerType, typeMetadata, validateValueCallback, true);
var key = new ViewModelPropertyKey(property);
PropertyCache.Register(property);
return(key);
}
/// <summary> Sets the local value of a read-only dependency property, specified by the System.Windows.DependencyPropertyKey identifier of the dependency property.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key">The <see cref="ViewModelPropertyKey"/> identifier of the property to set.</param>
/// <param name="value"> The new local value.</param>
public void SetValue <T>(ViewModelPropertyKey key, T value)
{
var prevValue = GetValue <T>(key.ViewModelProperty);
if (_propertyValues.ContainsKey(key))
{
_propertyValues[key] = value;
}
else
{
_propertyValues.Add(key, value);
}
if (!Equals(prevValue, value))
{
OnPropertyChanged(key.ViewModelProperty);
}
}
