public CollectionMonitor(IList <T> input)
{
if (input == null)
{
throw new ArgumentNullException("input");
}
INotifyCollectionChanged inputAsINotifyCollectionChanged = input as INotifyCollectionChanged;
if (inputAsINotifyCollectionChanged == null)
{
throw new ArgumentException("Collections must implement INotifyCollectionChanged.");
}
_input = input;
_Properties = new List <PropertyNotifier <T> >();
Properties = new ReadOnlyCollection <PropertyNotifier <T> >(_Properties);
ReferenceCountTracker = new ReferenceCountTracker <T>();
WeakNotifyCollectionChangedEventHandler.Register(
inputAsINotifyCollectionChanged,
this,
(me, sender, args) => me.OnCollectionChanged(args));
// Add Items to Reference Counter
foreach (var item in input)
{
ReferenceCountTracker.Add(item);
}
}
public NotifyCollectionChangedMonitor(PropertyAccessTree propertyAccessTree, IList <T> input)
{
if (input == null)
{
throw new ArgumentNullException("input");
}
INotifyCollectionChanged inputAsINotifyCollectionChanged = input as INotifyCollectionChanged;
if (inputAsINotifyCollectionChanged == null)
{
throw new ArgumentException("Collections must implement INotifyCollectionChanged to work with CLINQ");
}
_input = input;
this.PropertyAccessTree = propertyAccessTree;
this.ReferenceCountTracker = new ReferenceCountTracker <T>();
SetupPropertyChangeSubscription();
SubscribeToItems(_input);
WeakNotifyCollectionChangedEventHandler.Register(
inputAsINotifyCollectionChanged,
this,
(me, sender, args) => me.OnCollectionChanged(sender, args));
}
/// <summary>
/// Creates a weak delegate from an Action delegate.
/// </summary>
public static NotifyCollectionChangedEventHandler From(NotifyCollectionChangedEventHandler strongHandler)
{
AssertIsWeakDelegate(strongHandler);
var wrapper = new WeakNotifyCollectionChangedEventHandler(strongHandler);
return(wrapper.Execute);
}
private IndexingSkipList <IList <TResult> > .Node RecordItem(IndexingSkipList <IList <TResult> > .Node nodeBefore, TSource item, IList <TResult> collection)
{
int count = GetCount(collection);
var newNode = _collectionIndex.AddAfter(nodeBefore, count, collection);
RecordNodeForItemInLookupTables(item, collection, newNode);
if (collection != null && !_weakEventHandlers.ContainsKey(collection))
{
WeakEventHandler weakEventHandler = WeakNotifyCollectionChangedEventHandler.Register(
(INotifyCollectionChanged)collection,
this,
(me, sender, args) => me.OnSubCollectionChanged(sender, args));
_weakEventHandlers.Add(collection, weakEventHandler);
}
return(newNode);
}
