void AddEventimpl(IReadOnlyCollection <VoidTrader> newItems)
{
var traderVMs = newItems.Select(trader => new VoidTradeViewModel(trader, FiltersEvent));
var itemVMs = newItems.Where(trader => trader.Manifest != null)
.SelectMany(trader => trader.Manifest.Select(m => new VoidItemViewModel(m, FiltersEvent)));
items.AddRange(itemVMs);
traders.AddRange(traderVMs);
}
protected virtual void AddEventImpl(IReadOnlyCollection <ItemModel> newItems)
{
LogAdded(newItems);
items.AddRange(newItems.Select(item => CreateItem(item, FiltersEvent)));
}
void OnCollectionChanged <ItemVM>(
NotifyCollectionChangedEventArgs e,
ObservableCollection <ItemVM> allItems,
Func <ItemVM, bool> filter,
Func <ItemVM, UserNotification> createNotification)
{
if (e.Action == NotifyCollectionChangedAction.Move)
{
return;
}
IEnumerable <ItemVM> removedItems;
if (e.Action == NotifyCollectionChangedAction.Reset)
{
removedItems = sourceToNotificationMapping.Keys.OfType <ItemVM>();
}
else
{
removedItems = e.OldItems?.Cast <ItemVM>();
}
if (removedItems != null)
{
RemoveAllItems(removedItems);
}
IEnumerable <ItemVM> addedItems;
if (e.Action == NotifyCollectionChangedAction.Reset)
{
addedItems = allItems;
}
else
{
addedItems = e.NewItems?.Cast <ItemVM>();
}
var actuallyAdded = new List <ItemVM>();
if (addedItems != null)
{
Tools.Logging.Send(LogLevel.Info, $"Управление нотификациями: добавляю группу");
var notificationsToAdd = new List <UserNotification>();
foreach (var i in addedItems)
{
if (!filter(i))
{
continue;
}
if (sourceToNotificationMapping.ContainsKey(i))
{
continue;
}
actuallyAdded.Add(i);
var notification = createNotification(i);
sourceToNotificationMapping.Add(i, notification);
Tools.Logging.Send(LogLevel.Info, $"Управление нотификациями: добавляю нотификацию \"{notification}\"!");
notificationsToAdd.Add(notification);
}
Tools.Logging.Send(LogLevel.Info, $"Управление нотификациями: группа добавлена");
if (notificationsToAdd.Count > 0)
{
notifications.AddRange(notificationsToAdd);
}
}
if (actuallyAdded.Count > 0)
{
RemoveLater(actuallyAdded);
}
}