public static IObservable <TProp> WhenAny <TProp>(this IObservablePropertyChanged @this, Expression <Func <TProp> > prop)
{
var name = Reflex.PropertyName(prop);
var func = prop.CompileFast();
return(@this.PropertyChangedObservable.Where(s => s == name).Select(_ => func()));
}
public static IObservable <PropertyChangeData> WhenPropertiesChanged(this IObservablePropertyChanged observable, params string[] propertyNames)
{
if (observable == null)
{
throw new ArgumentNullException(nameof(observable), $"{nameof(observable)} is null.");
}
if (propertyNames == null || propertyNames.Length == 0)
{
throw new ArgumentException($"{nameof(propertyNames)} is null or empty.", nameof(propertyNames));
}
return(observable.Changed.ForProperties(propertyNames));
}
public static IObservable <PropertyChangeData> WhenPropertyChanged(this IObservablePropertyChanged observable, string propertyName)
{
if (observable == null)
{
throw new ArgumentNullException(nameof(observable), $"{nameof(observable)} is null.");
}
if (string.IsNullOrEmpty(propertyName))
{
throw new ArgumentException($"{nameof(propertyName)} is null or empty.", nameof(propertyName));
}
return(observable.Changed.ForProperty(propertyName));
}
public static IObservable <PropertyChangedData> WhenPropertyChanged(
this IObservablePropertyChanged changed, string propertyName) =>
changed.Changed.Where(p => p.PropertyName == propertyName);
public static IObservable <PropertyChangedData <TProperty> > WhenPropertiesChanged <TProperty>(
this IObservablePropertyChanged changed, params string[] propertyNames) =>
changed.Changed.Where(p => propertyNames.Contains(p.PropertyName)).Select(data => (PropertyChangedData <TProperty>)data);
public static IObservable <PropertyChangedData> WhenPropertiesChanged(
this IObservablePropertyChanged changed, params string[] propertyNames) =>
changed.Changed.Where(p => propertyNames.Contains(p.PropertyName));
public static IObservable <PropertyChangedData <TProperty> > WhenPropertyChanged <TProperty>(
this IObservablePropertyChanged changed, string propertyName) =>
changed.Changed.Where(p => p.PropertyName == propertyName).Select(data => (PropertyChangedData <TProperty>)data);
public static IObservable <PropertyChangedData <TProperty> > WhenPropertyChanged <TProperty>(this IObservablePropertyChanged changed, String propertyName)
{
}
public static IObservable <PropertyChangedData <TProperty> > WhenPropertiesChanged <TProperty>(this IObservablePropertyChanged changed, [ParamArrayAttribute()] String[] propertyNames)
{
}
