/// <summary>
/// Gets or sets the <see cref="TEntity" /> with the specified index.
/// </summary>
public TEntity this[int index]
{
get
{
/////
// Struct type always returns an instance.
/////
IMutableIdKey match = _tracker.ElementAt(index);
return(Entity.Get <TEntity>(match.Key));
}
set
{
Precheck( );
/////
// Struct type always returns an instance.
/////
IMutableIdKey match = _tracker.ElementAt(index);
_tracker.Remove(match);
if (value != null)
{
_tracker.Add((( IEntityInternal )value).MutableId);
}
}
}
protected override async Task ExecuteAsync(IKey key, CancellationToken cancellationToken)
{
Movie model = collection.FindByKey(key);
if (model != null && await navigator.ConfirmAsync($"Delete movie '{model.Name}'?"))
{
changeTracker.Remove(collection, model);
}
}
/// <summary>
/// Removes the specified item.
/// </summary>
/// <param name="item">The item.</param>
/// <returns></returns>
public bool Remove(TEntity item)
{
if (item == null)
{
return(false);
}
Precheck( );
IMutableIdKey[] matches = _tracker.Where(pair => pair.Key == item.Id).ToArray( );
return(matches.Aggregate(false, (current, match) => current & _tracker.Remove(match)));
}