public CollectionByKeyExecutor(TrackCollectionByKey <TKey, TValue> target, CollectionByKeyCommand <TKey, TValue> command)
: base(target, command)
{
if (command.Action == CollectionByKeyChanged.Remove || command.Action == CollectionByKeyChanged.Update)
{
OldValue = target[command.Key];
}
}
public static CollectionByKeyExecutor <TKey, TValue> Update(TrackCollectionByKey <TKey, TValue> target, TKey key, TValue newItem)
{
return(new CollectionByKeyExecutor <TKey, TValue>(target, new CollectionByKeyCommand <TKey, TValue>(CollectionByKeyChanged.Update, key, newItem)));
}
public static CollectionByKeyExecutor <TKey, TValue> Remove(TrackCollectionByKey <TKey, TValue> target, TKey key)
{
return(new CollectionByKeyExecutor <TKey, TValue>(target, new CollectionByKeyCommand <TKey, TValue>(CollectionByKeyChanged.Remove, key, default)));
}
public static CollectionByKeyExecutor <TKey, TValue> Insert(TrackCollectionByKey <TKey, TValue> target, TKey key, TValue newValue)
{
return(new CollectionByKeyExecutor <TKey, TValue>(target, new CollectionByKeyCommand <TKey, TValue>(CollectionByKeyChanged.Insert, key, newValue)));
}
