/// <summary>
/// Creates a new <see cref="Subscriber"/> for the specified source object.
/// </summary>
/// <typeparam name="T">The type of the source object.</typeparam>
/// <param name="source">The source object.</param>
/// <returns>A <see cref="Subscriber"/> for the <paramref name="source"/>.</returns>
private Subscriber CreateObserve <T>(T source) where T : class, INotifyPropertyChanged
{
Subscriber subscriber = Subscriber.Create(source, this);
PropertyChangedEvent.AddListener(source, subscriber);
return(subscriber);
}
/// <summary>
/// Initializes a new instance of the <see cref="ContainerCollection"/> class.
/// </summary>
/// <param name="items">The input data objects.</param>
/// <param name="converter">The underlying converter.</param>
internal ContainerCollection(IList items, ItemsConverter converter) : this(new ObservableCollection <DependencyObject>(converter.GetContainers(items)))
{
this.converter = converter;
propertyListener = new PropertyChangedListener(this);
PropertyChangedEvent.AddListener(converter, propertyListener);
if (items is INotifyCollectionChanged collection)
{
this.items = items;
collectionListener = new CollectionChangedListener(this);
CollectionChangedEvent.AddListener(collection, collectionListener);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="GroupingCollection"/> class.
/// </summary>
/// <param name="enumerable">The input sequence.</param>
/// <param name="grouping">The underlying grouping.</param>
internal GroupingCollection(IEnumerable <DependencyObject> enumerable, Grouping grouping) : this(new RecomposableCollection <DependencyObject>(grouping.GroupSort(enumerable)))
{
this.grouping = grouping;
propertyListener = new PropertyChangedListener(this);
PropertyChangedEvent.AddListener(grouping, propertyListener);
if (enumerable is INotifyCollectionChanged collection)
{
this.enumerable = enumerable;
collectionListener = new CollectionChangedListener(this);
CollectionChangedEvent.AddListener(collection, collectionListener);
}
}
