internal PropertyTracker(IPropertyPathTracker pathTracker, NotifyingGetter <TSource, TValue> getter)
{
var type = getter.Property.ReflectedType;
if (type is null)
{
throw new ArgumentException("getter.Property.ReflectedType is null");
}
if (type.IsValueType)
{
var message = $"Property path cannot have structs in it. Copy by value will make subscribing error prone.{Environment.NewLine}" +
$"The type {type.Namespace}.{type.PrettyName()} is a value type not so {type.PrettyName()}.{getter.Property.Name} subscribing to changes is weird.";
throw new ArgumentException(message, nameof(getter));
}
if (!typeof(INotifyPropertyChanged).IsAssignableFrom(type))
{
var message = $"All levels in the path must implement INotifyPropertyChanged.{Environment.NewLine}" +
$"The type {type.Namespace}.{type.PrettyName()} does not so the property {type.PrettyName()}.{getter.Property.Name} will not notify when value changes.";
throw new ArgumentException(message, nameof(getter));
}
this.PathTracker = pathTracker;
this.Getter = getter;
this.onTrackedPropertyChanged = (o, e) =>
{
if (e.IsMatch(getter.Property))
{
this.OnTrackedPropertyChanged(o, e);
}
};
}
public PropertyTracker(IPropertyPathTracker pathTracker, NotifyingGetter <TSource, TValue> getter)
{
Ensure.NotNull(pathTracker, nameof(pathTracker));
Ensure.NotNull(getter, nameof(getter));
Ensure.NotNull(getter.Property.ReflectedType, nameof(getter));
var type = getter.Property.ReflectedType;
if (type == null)
{
throw new ArgumentException("PathProperty.ReflectedType == null");
}
if (type.IsValueType)
{
var message = string.Format(
"Property path cannot have structs in it. Copy by value will make subscribing error prone." +
Environment.NewLine +
"The type {0}.{1} is a value type not so {1}.{2} subscribing to changes is weird.",
type.Namespace,
type.PrettyName(),
getter.Property.Name);
throw new ArgumentException(message, nameof(getter));
}
if (!typeof(INotifyPropertyChanged).IsAssignableFrom(type))
{
var message = string.Format(
"All levels in the path must implement INotifyPropertyChanged." + Environment.NewLine +
"The type {0}.{1} does not so the property {1}.{2} will not notify when value changes.",
type.Namespace,
type.PrettyName(),
getter.Property.Name);
throw new ArgumentException(message, nameof(getter));
}
this.PathTracker = pathTracker;
this.Getter = getter;
this.onTrackedPropertyChanged = (o, e) =>
{
if (NotifyPropertyChangedExt.IsMatch(e, this.Getter.Property))
{
this.OnTrackedPropertyChanged(o, e);
}
};
}
