private ChangingHandlers([NotNull] BindableChangingAsync <T> @async)
{
if (@async == null)
{
throw new ArgumentNullException(nameof(@async));
}
this.sync = null;
this.async = async;
}
public static void SetOnce <T>(this Bindable <T> bindable, T value)
{
var version = bindable.Version;
BindableChanging <T> currentAuthStateOnChanging = (Bindable <T> sender, ref T val, T prev, ref bool cancel)
=>
{
cancel |= sender.Version > version;
};
bindable.Changing += currentAuthStateOnChanging;
try
{
bindable.Value = value;
}
finally
{
bindable.Changing -= currentAuthStateOnChanging;
}
}
public static BindResult BindOnChanging <T>([NotNull] this Bindable <T> bindable, BindableChanging <T> handler)
{
bindable.Changing += handler;
return(new BindResult(null, () => bindable.Changing -= handler));
}
public int CompareTo(BindableChanging <T> other)
{
return(Comparer <BindableChanging <T> > .Default.Compare(this.sync, other));
}
