AvolonDock find all Layouts

Question

I'm trying to figure out how to use AvalonDock. I'm not limited to MVVM and quite happy to make the following work with code-behind WPF.

I have the following Method which opens a new AvalonDock LayoutDocument and adds a WPF user control to it.

Before opening a new LayoutDocument, the Method checks that the title of the new LayoutDocument doesn't already exist in LayoutDocumentPane.

This almost seems to work well.

The problem is that if the LayoutDocument being opened already exists and has been un-anchored from LayoutDocumentPane then it no longer exists in LayoutDocumentPane.

How can I search for all LayoutDocument regardless of where they are anchored?

Method as follows:

private void OpenWindow(string title, System.Windows.Controls.UserControl userControl)
    {
        var firstDocumentPane = dockManager.Layout.Descendents().OfType<LayoutDocumentPane>().FirstOrDefault();
        if (firstDocumentPane != null)
        {
            bool addChild = true;
            foreach (LayoutDocument child in LayoutDocumentPane.Children)
            {
                if (child.Title == title)
                {
                    child.IsSelected = true;
                    addChild = false;
                }
            }
            if (addChild == true)
            {
                LayoutDocument doc = new LayoutDocument();
                doc.Title = title;
                doc.Content = userControl;
                doc.IsSelected = true;
                firstDocumentPane.Children.Add(doc);
            }
        }
    }

Answer 1

I've figured it out.

The following will list all LayoutDocument documents in dockManager

var currentContentsList = dockManager.Layout.Descendents().OfType<LayoutDocument>().ToArray();

then loop through as follows:

foreach (LayoutDocument child in currentContentsList)
        {
             child.IsActive = true;
        }