public ObservableValue(TIn value, string name = null, IManipulator manipulator = null, object meta = null) : base(name ?? $"ObservableValue@{States.NextId}")
{
Meta = meta;
Manipulator = manipulator ?? Manipulator <TIn, TOut> .For();
_Value = Manipulator.Enhance(value, default(TIn), Name);
}
public bool PrepareNewValue(TIn oldValue, TIn changeValue, out TIn newValue)
{
this.CheckIfStateModificationsAreAllowed();
newValue = changeValue;
if (this.HasInterceptors <IValueWillChange <TIn> >())
{
var change = this.NotifyInterceptors(new ValueWillChange <TIn>(newValue, this));
if (change == null)
{
return(false);
}
newValue = change.NewValue;
}
newValue = (TIn)Manipulator.Enhance(newValue, oldValue, Name);
return(!EqualityComparer <TIn> .Default.Equals(newValue, oldValue));
}
