/// <summary>
/// Creates a <see cref="PriorityValue"/> for a <see cref="PerspexProperty"/>.
/// </summary>
/// <param name="property">The property.</param>
/// <returns>The <see cref="PriorityValue"/>.</returns>
private PriorityValue CreatePriorityValue(PerspexProperty property)
{
Func <PerspexObject, object, object> validate = property.GetValidationFunc(GetType());
Func <object, object> validate2 = null;
if (validate != null)
{
validate2 = v => validate(this, v);
}
PriorityValue result = new PriorityValue(property.Name, property.PropertyType, validate2);
result.Changed.Subscribe(x =>
{
object oldValue = (x.Item1 == PerspexProperty.UnsetValue) ?
GetDefaultValue(property) :
x.Item1;
object newValue = (x.Item2 == PerspexProperty.UnsetValue) ?
GetDefaultValue(property) :
x.Item2;
if (!Equals(oldValue, newValue))
{
RaisePropertyChanged(property, oldValue, newValue, (BindingPriority)result.ValuePriority);
_propertyLog.Verbose(
"{Property} changed from {$Old} to {$Value} with priority {Priority}",
property,
oldValue,
newValue,
(BindingPriority)result.ValuePriority);
}
});
return(result);
}
