/// <summary>
/// Begins observing the given notifying object.
/// </summary>
/// <param name="notifyingObject"></param>
/// <param name="addEventAction"></param>
/// <param name="removeEventAction"></param>
public void Observe(
Object notifyingObject,
Action <PropertyChangedEventHandler> addEventAction,
Action <PropertyChangedEventHandler> removeEventAction)
{
notifyingObject.ThrowIfNull("notifyingObject");
addEventAction.ThrowIfNull("addEventAction");
removeEventAction.ThrowIfNull("removeEventAction");
if (IsDisposed)
{
return;
}
if (myObservedObjects.ContainsKey(notifyingObject))
{
return;
}
myObservedObjects[notifyingObject] = () => removeEventAction(myPropertyChangedEventHandler);
NotificationChainPropertyAttribute.CallProperties(notifyingObject);
addEventAction(myPropertyChangedEventHandler);
}
/// <summary>
/// Begins observing the given notifying collection.
/// </summary>
/// <param name="notifyingCollection"></param>
public void ObserveCollection(INotifyCollectionChanged notifyingCollection)
{
notifyingCollection.ThrowIfNull("notifyingCollection");
if (IsDisposed)
{
return;
}
if (myObservedCollections.ContainsKey(notifyingCollection))
{
return;
}
myObservedCollections[notifyingCollection] = () => notifyingCollection.CollectionChanged -= myCollectionChangedEventHandler;
NotificationChainPropertyAttribute.CallProperties(notifyingCollection);
notifyingCollection.CollectionChanged += myCollectionChangedEventHandler;
var enumerable = notifyingCollection as IEnumerable;
if (enumerable != null)
{
foreach (var item in enumerable)
{
var inpc = item as INotifyPropertyChanged;
if (inpc != null)
{
base.Observe(inpc);
}
}
}
}