private State[] ComputeStates()
{
var newWidgets = _builder.Invoke(_context);
using (Atom.NoWatch)
{
_states = StateUtilities.UpdateChildren(_context, _states, newWidgets);
}
// ReSharper disable once CoVariantArrayConversion
return(_states.ToArray());
}
internal static Atom <IState[]> CreateList(BuildContext context, Func <BuildContext, List <Widget> > builder)
{
Assert.IsNull(Atom.CurrentScope);
var states = new State[0];
return(Atom.Computed <IState[]>(() =>
{
var newWidgets = builder.Invoke(context);
using (Atom.NoWatch)
{
states = StateUtilities.UpdateChildren(context, states, newWidgets);
}
// ReSharper disable once CoVariantArrayConversion
return states.ToArray();
}, onInactive: () =>
{
foreach (var state in states)
{
StateUtilities.DeactivateChild(state);
}
}, requiresReaction: true));
}