public CategoryViewModel(Category category)
{
Category = category;
foreach (Model.PostIt postIt in category.PostIts)
{
PostIts.Insert(0, new PostItViewModel(postIt));
}
category.PostIts.CollectionChanged += PostItsCollectionChanged;
}
private void PostItsCollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case ChangedAction.Add:
foreach (var newItem in e.NewItems)
{
PostIts.Insert(0, new PostItViewModel(newItem as Model.PostIt));
}
break;
case ChangedAction.Remove:
foreach (var oldItem in e.OldItems)
{
PostIts.Remove(PostIts.FirstOrDefault(p => (p as PostItViewModel).Model.Id == (oldItem as Model.PostIt).Id));
}
break;
case ChangedAction.Reset:
PostIts.Clear();
break;
}
OnPropertyChanged();
}
