/// <summary>
/// update the lookups with the new item
/// 5. dettach notifier from event handler
/// 4. remove from item -> key dictionary
/// 3. remove from key-> items lookup
/// 2. remove from item -> notifier dictionary
/// 1. dispose notifier
/// </summary>
void _removeItemFromLookups(object item)
{
var key = _itemToKey[item];
var notifier = _itemToNotifier[item];
notifier.Changed -= Notifier_Changed;
_itemToKey.Remove(item);
_keyToItems.Remove(key, item);
_itemToNotifier.Remove(item);
notifier.Dispose();
}
public T this[int index]
{
get
{
var node = _tree[index];
return(node.Item);
}
set
{
var node = _tree[index];
var oldVal = node.Item;
_nodes.Remove(oldVal, node);
node.Item = value;
_nodes.Add(node.Item, node);
}
}