protected override void InsertItem(int index, T item)
{
base.InsertItem(index, item);
if (item is INotifyPropertyChanged notify)
{
notify.PropertyChanged += Item_PropertyChanged;
}
Added?.Invoke(this, new SingleChangeEventArgs <T>(index, item, SingleChangeType.Added));
AddedAny?.Invoke(this, new SingleChangeEventArgs <T>(index, item, SingleChangeType.Added));
}
protected override void SetItem(int index, T newItem)
{
T oldItem = this[index];
if (oldItem is INotifyPropertyChanged oldNotify)
{
oldNotify.PropertyChanged -= Item_PropertyChanged;
}
base.SetItem(index, newItem);
Set?.Invoke(this, new SetItemEventArgs <T>(index, oldItem, newItem));
if (newItem is INotifyPropertyChanged newNotify)
{
newNotify.PropertyChanged += Item_PropertyChanged;
}
RemovedAny?.Invoke(this, new SingleChangeEventArgs <T>(index, oldItem, SingleChangeType.Removed));
AddedAny?.Invoke(this, new SingleChangeEventArgs <T>(index, newItem, SingleChangeType.Added));
}