public ItemDependency(string propertyPath, IBindableCollection <TElement> sourceElements, IPathNavigator pathNavigator)
{
_pathNavigator = pathNavigator;
_sourceElementObservers = new Dictionary <TElement, IToken>();
_propertyPath = propertyPath;
_sourceElements = sourceElements;
_actioner = new ElementActioner <TElement>(sourceElements, AddItem, RemoveItem, sourceElements.Dispatcher);
}
private void ChildCollectionAdded(IBindableCollection <TElement> collection)
{
_childCollectionActioners[collection] = new ElementActioner <TElement>(
collection,
item => ResultCollection.Add(item),
item => ResultCollection.Remove(item),
Dispatcher);
}
private void WireInterceptor(IBindableCollection <TElement> source)
{
_source = source;
_source.CollectionChanged += _weakHandler.Handler;
_propertyChangeObserver = new PropertyChangeObserver(Element_PropertyChanged);
_addActioner = new ElementActioner <TElement>(_source, element => _propertyChangeObserver.Attach(element), element => _propertyChangeObserver.Detach(element), Dispatcher);
}
/// <summary>
/// Initializes a new instance of the <see cref="UnionIterator<TElement>"/> class.
/// </summary>
/// <param name="elements">The elements.</param>
/// <param name="dispatcher">The dispatcher.</param>
public UnionIterator(IBindableCollection <IBindableCollection <TElement> > elements, IDispatcher dispatcher)
: base(elements, dispatcher)
{
// A map of actioners for each of the collections being unioned
_childCollectionActioners = new Dictionary <IBindableCollection <TElement>, ElementActioner <TElement> >();
// An actioner that invokes the Added/Removed delegates each time a collection is added to the list of
// collections being unioned
_rootActioner = new ElementActioner <IBindableCollection <TElement> >(
SourceCollection,
ChildCollectionAdded,
ChildCollectionRemoved,
Dispatcher);
}
public UnionIterator(IBindableCollection <IBindableCollection <TElement> > elements, IDispatcher dispatcher)
: base(elements, dispatcher)
{
_childCollectionActioners = new Dictionary <IBindableCollection <TElement>, ElementActioner <TElement> >();
_rootActioner = new ElementActioner <IBindableCollection <TElement> >(SourceCollection, ChildCollectionAdded, ChildCollectionRemoved, Dispatcher);
}
