/// <inheritdoc />
protected override void InsertItem(int index, T item)
{
var e = new CollectionChangingEventArgs(CollectionChangeAction.Add, index, item);
OnCollectionChanging(e);
if (e.Cancel)
{
return;
}
LogInsert(item);
base.InsertItem(index, item);
}
/// <inheritdoc />
protected override void RemoveItem(int index)
{
var e = new CollectionChangingEventArgs(CollectionChangeAction.Remove, index, Items[index]);
OnCollectionChanging(e);
if (e.Cancel)
{
return;
}
LogRemove(this[index]);
base.RemoveItem(index);
}
/// <inheritdoc />
protected override void ClearItems()
{
var e = new CollectionChangingEventArgs(CollectionChangeAction.Refresh);
OnCollectionChanging(e);
if (e.Cancel)
{
return;
}
foreach (var item in this)
{
LogRemove(item);
}
base.ClearItems();
}
/// <summary>
/// Raises the <see cref="E:CollectionChanging"/> event.
/// </summary>
/// <param name="e">The <see cref="CollectionChangingEventArgs"/> instance containing the event data.</param>
protected virtual void OnCollectionChanging(CollectionChangingEventArgs e)
{
CollectionChanging?.Invoke(this, e);
}
