public BindingManager <TViewModel> Bind <T>(Expression <Func <TViewModel, T> > sourceExpr, Action <T> setterDelegate)
{
if (!(sourceExpr.Body is MemberExpression member))
{
throw new ArgumentException($"Expression '{sourceExpr.Name}' refers to a method, not a property.");
}
var propInfo = member.Member as PropertyInfo;
if (propInfo == null)
{
throw new ArgumentException($"Expression '{sourceExpr.Name}' refers to a field, not a property.");
}
if (propInfo.ReflectedType == null ||
typeof(TViewModel) != propInfo.ReflectedType &&
!typeof(TViewModel).IsSubclassOf(propInfo.ReflectedType))
{
throw new ArgumentException(
$"Expresion '{sourceExpr}' refers to a property that is not from type {typeof(TViewModel).Name}.");
}
var sourceGetter = sourceExpr.Compile();
PropertyBindings.Add(propInfo.Name, new PropertyChangedHandler <TViewModel>(SynchronizationContext.Current,
vm =>
{
var val = sourceGetter.Invoke(vm);
setterDelegate.Invoke(val);
}));
return(this);
}
public ActivityInfo AddPropertyBinding([NotNull] PropertyBindingInfo binding)
{
PropertyBindings.Add(binding.NotNull());
return(this);
}