public override IPromise <RoutePopDisposition> willPop()
{
_ModalScopeState scope = this._scopeKey.currentState;
D.assert(scope != null);
var callbacks = new List <WillPopCallback>(this._willPopCallbacks);
Promise <RoutePopDisposition> result = new Promise <RoutePopDisposition>();
Action <int> fn = null;
fn = (int index) => {
if (index < callbacks.Count)
{
callbacks[index]().Then((pop) => {
if (!pop)
{
result.Resolve(RoutePopDisposition.doNotPop);
}
else
{
fn(index + 1);
}
});
}
else
{
base.willPop().Then((pop) => result.Resolve(pop));
}
};
fn(0);
return(result);
}
public override Future <RoutePopDisposition> willPop()
{
//async
_ModalScopeState scope = _scopeKey.currentState as _ModalScopeState;
D.assert(scope != null);
Future InvokePopCallbacks(int index)
{
if (index == _willPopCallbacks.Count)
{
return(base.willPop());
}
var callback = _willPopCallbacks[index];
return(callback.Invoke().then(v => {
if (!(bool)v)
{
return Future.value(RoutePopDisposition.doNotPop);
}
return InvokePopCallbacks(index + 1);
}));
}
return(InvokePopCallbacks(0).to <RoutePopDisposition>());
}