/// <summary>
/// The annotation data collection is changed.
/// </summary>
private void dataCollection_Changed(object sender, CollectionChangeEventArgs <AnnotationData> e)
{
// if annotation has been added to the collection
if (e.Action == CollectionChangeActionType.InsertItem || e.Action == CollectionChangeActionType.SetItem)
{
AnnotationDataCollection dataCollection = (AnnotationDataCollection)sender;
AnnotationViewCollection viewCollection = _annotationViewer.AnnotationViewController.GetAnnotationsView(dataCollection);
// subscribe to the annotation view events
SubscribeToAnnotationViewEvents(viewCollection.FindView(e.NewValue));
}
if (_isEnabled)
{
OnDataCollectionChanged((AnnotationDataCollection)sender, e);
}
}
/// <summary>
/// Unsubscribes from <see cref="AnnotationDataCollection"/> events.
/// </summary>
/// <param name="dataCollection">The annotation data collection.</param>
private void UnubscribeFromAnnotationDataCollectionEvents(AnnotationDataCollection dataCollection)
{
if (_handleViewEvents)
{
AnnotationViewCollection viewCollection = _annotationViewer.AnnotationViewController.GetAnnotationsView(dataCollection);
foreach (AnnotationView view in viewCollection)
{
UnsubscribeFromAnnotationViewEvents(view);
}
}
if (_handleDataEvents)
{
dataCollection.ItemPropertyChanging -= new EventHandler <AnnotationDataPropertyChangingEventArgs>(dataCollection_ItemPropertyChanging);
dataCollection.ItemPropertyChanged -= new EventHandler <AnnotationDataPropertyChangedEventArgs>(dataCollection_ItemPropertyChanged);
}
dataCollection.Changing -= new CollectionChangeEventHandler <AnnotationData>(dataCollection_Changing);
dataCollection.Changed -= new CollectionChangeEventHandler <AnnotationData>(dataCollection_Changed);
}
