private void UpdateSubscriptions()
{
foreach (var node in _previousContext.UsedNodes)
{
if (!_currentContext.UsedNodes.Contains(node))
{
node.ValueChanged -= OnValueChanged;
}
}
foreach (var collection in _previousContext.UsedCollections)
{
if (!_currentContext.UsedCollections.Contains(collection))
{
collection.UntypedCollectionChanged -= OnValueChanged;
}
}
foreach (var node in _currentContext.UsedNodes)
{
if (!_previousContext.UsedNodes.Contains(node))
{
node.ValueChanged += OnValueChanged;
}
}
foreach (var collection in _currentContext.UsedCollections)
{
if (!_previousContext.UsedCollections.Contains(collection))
{
collection.UntypedCollectionChanged += OnValueChanged;
}
}
_previousContext.Clear();
}
private void Unsubscribe()
{
foreach (var node in _context.UsedNodes)
{
node.ValueChanged -= OnValueChanged;
}
foreach (var collection in _context.UsedCollections)
{
collection.CollectionChanged -= OnValueChanged;
}
_context.Clear();
}
public void Dispose()
{
foreach (var node in _currentContext.UsedNodes)
{
node.ValueChanged -= OnValueChanged;
}
foreach (var collection in _currentContext.UsedCollections)
{
collection.UntypedCollectionChanged -= OnValueChanged;
}
(_previousContext, _currentContext) = (_currentContext, _previousContext);
_currentContext.Clear();
UpdateSubscriptions();
}