private void OnAnnotationsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.Action == NotifyCollectionChangedAction.Add)
{
foreach (Annotation annot in e.NewItems)
{
AddAnnotation(annot);
}
}
else if (e.Action == NotifyCollectionChangedAction.Remove)
{
var items = new List <Annotation>();
foreach (Annotation annot in e.OldItems)
{
items.Add(annot);
}
RemoveAnnotations(items.ToArray());
foreach (var item in items)
{
_annotationDictionaries.Remove(item.Id);
}
}
else if (e.Action == NotifyCollectionChangedAction.Reset)
{
map.RemoveAnnotations();
_annotationDictionaries.Clear();
}
else if (e.Action == NotifyCollectionChangedAction.Replace)
{
var itemsToRemove = new List <Annotation>();
foreach (Annotation annot in e.OldItems)
{
itemsToRemove.Add(annot);
}
RemoveAnnotations(itemsToRemove.ToArray());
var itemsToAdd = new List <Annotation>();
foreach (Annotation annot in e.NewItems)
{
itemsToRemove.Add(annot);
}
AddAnnotations(itemsToAdd.ToArray());
}
}