public void BringPanelIntoView(object viewModel)
{
LayoutAnchorable anchorable = null;
try
{
anchorable = ActivePanels.Single(o => o.Content.SafeCast <UserControl>().DataContext == viewModel);
}
catch (InvalidOperationException)
{
throw new Exception($"Error bringing the dynamic panel associated with the ViewModel instance of type {viewModel.GetType().Name} into view : \n " +
$"The PanelSelectionBinding associated to the DynamicPanelDefinition of the given viewModelType does not contain the given instance");
}
var parent = anchorable.Parent.SafeCast <LayoutAnchorablePane>();
parent.SelectedContentIndex = parent.Children.IndexOf(anchorable);
}
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);
}
}