public void OnLayoutLoaded(LayoutLoadedArgs args)
{
var matchingAnchorables = args.LayoutAnchorables.Where(anch => anch.Content.GetType() == Definition.View &&
anch.Content.SafeCast <UserControl>().DataContext.GetType() == Definition.ViewModel &&
anch.IsVisible);
var rougeAnchorables = ActivePanels.Where(o => !matchingAnchorables.Select(anch => anch.Content.SafeCast <UserControl>().DataContext).
Contains(o.Content.SafeCast <UserControl>().DataContext));
foreach (var anchorable in rougeAnchorables.ToList())
{
RemoveDynamicPanel(anchorable);
}
foreach (var invalidationSubscription in InvalidationSubscriptions)
{
invalidationSubscription.Event.Unsubscribe(invalidationSubscription.Token);
}
InvalidationSubscriptions.Clear();
ActivePanels.Clear();
foreach (var anchorable in matchingAnchorables)
{
ResolveDynamicPanelDependencies(anchorable);
ActivePanels.Add(anchorable);
}
SyncSelection(ActivePanels.Select(o => o.Content.SafeCast <UserControl>().DataContext));
}
private void OnSelectionBindingChanged()
{
var activeViewModels = ActivePanels.Select(o => o.Content.SafeCast <UserControl>().DataContext);
var addedItems = ViewModelSelection.SelectedObject.Except(activeViewModels).ToList();
foreach (var item in addedItems)
{
CreateAndAddDynamicPanel(item);
}
var removedItems = activeViewModels.Except(ViewModelSelection.SelectedObject).ToList();
foreach (var item in removedItems)
{
var anchorable = ActivePanels.Single(anch => anch.Content.SafeCast <UserControl>().DataContext == item);
RemoveDynamicPanel(anchorable);
}
}