public static IValidatedProperty <string> Validate <T>(
this IProperty <Optional <T> > self,
Func <T, string> toString,
Func <string, IValidationResult <T> > fromString)
{
var validationError = new BehaviorSubject <Optional <string> >(Optional.None());
return(new ValidatedProperty <string>
{
Value = self.SelectPerElement(toString).Or(""),
IsReadOnly = self.IsReadOnly,
ValidationError = validationError.Merge(self.Select(v => Optional.None <string>())),
Writer = (v, save) => fromString(v).MatchWith(
(T t) =>
{
self.Write(Optional.Some(t));
validationError.OnNext(Optional.None <string>());
return false;
},
(string e) =>
{
self.Write(Optional.None());
validationError.OnNext(Optional.Some(e));
return false;
}),
});
}
public RecommendationsContainer(IStorageService storageService)
{
_storageService = storageService;
Changes = _subject.Merge(Observable.FromAsync(GetAsync))
.Catch(Observable.Return <RecommendationsList>(null))
.Synchronize()
.DistinctUntilChanged()
.Replay(1)
.RefCount();
}
public Folder(IAccount server, string name, string shortName, string separator, bool hasChildren, bool canHaveMessages)
{
server_ = server;
name_ = name;
shortName_ = shortName;
separator_ = separator;
if (hasChildren)
{
subFolders_ = new BehaviorSubject <IEnumerable <Folder> >(new Folder[] { });
}
canHaveMessages_ = canHaveMessages;
if (canHaveMessages)
{
filterIds_ = new BehaviorSubject <IEnumerable <int> >(null);
messages_ = new BehaviorSubject <IEnumerable <MessageHeader> >(new MessageHeader[] { });
Messages = messages_.Throttle(TimeSpan.FromMilliseconds(100), Dependencies.TimeScheduler);
ViewMessages = Observable.CombineLatest(Messages, filterIds_, FilterMessages);
exists_ = new BehaviorSubject <int>(0);
recent_ = new BehaviorSubject <int>(0);
unseen_ = new BehaviorSubject <int>(0);
var msgCount = Messages.Select(msgs => msgs.Count());
// Take the value as either the number of messages in the list or
// just what the server has set for the folder.
Exists = exists_.Merge(msgCount);
var msgsUnRead = Messages.
Select((msgs) =>
{
// Build an observable list of all of the unread values.
return(Observable.CombineLatest(msgs.Select(msg => msg.UnRead)));
}).Switch(). // .. and only listen to the newest one.
Select(unreads =>
{
// .. then count up the unread values in it.
return(unreads.Where(unread => unread == true).Count());
});
// Take the value as either the number of messages with Unread set
// or just what the server has set for the folder.
Unseen = unseen_.Merge(msgsUnRead);
}
}
