public void SetVisibility(LayoutAnchorable anchorable, bool visibility)
{
anchorable.AssertNotNull(nameof(anchorable));
try
{
if (visibility)
{
LayoutGroups[anchorable].Children.Add(anchorable);
anchorable.Show();
LayoutGroups[anchorable].SelectedContentIndex = LayoutGroups[anchorable].Children.IndexOf(anchorable);
}
else
{
UpdateContainer(anchorable);
anchorable.Hide();
}
}
catch
{
// Due to serializing/deserializing the application multiple times, a reference an an anchorable/an anchorable's parent might be lost.
// If that's the case, we refresh the view and add it in the first available pane.
if (DockingView != null && DockingView.DockingManager != null)
{
var root = DockingView.DockingManager.Layout;
var availablePane = root.IfNotNull(o => o.Descendents().ExcludeDefaultValues().OfType <LayoutAnchorablePane>().FirstOrDefault());
if (availablePane != null)
{
if (LayoutGroups.ContainsKey(anchorable))
{
LayoutGroups[anchorable] = availablePane;
}
else
{
LayoutGroups.Add(anchorable, availablePane);
}
LayoutGroups[anchorable].Children.Add(anchorable);
LayoutGroups[anchorable].SelectedContentIndex = LayoutGroups[anchorable].Children.IndexOf(anchorable);
}
}
// Do nothing. If this point is reached, it means the layout anchorable has not been loaded yet in the UI.
// This can happen due to various UI events triggering by the initialization of viewModel components(MainMenuViewModel for example).
}
}
