protected override void InternalDock()
{
var root = Root as LayoutRoot;
LayoutDocumentPane documentPane = null;
if (root?.LastFocusedDocument != null && !Equals(root.LastFocusedDocument, this))
{
documentPane = root.LastFocusedDocument.Parent as LayoutDocumentPane;
}
if (documentPane == null)
{
documentPane = root.Descendents().OfType <LayoutDocumentPane>().FirstOrDefault();
}
bool added = false;
if (root?.Manager.LayoutUpdateStrategy != null)
{
added = root.Manager.LayoutUpdateStrategy.BeforeInsertDocument(root, this, documentPane);
}
if (!added)
{
if (documentPane == null)
{
throw new InvalidOperationException("Layout must contains at least one LayoutDocumentPane in order to host documents");
}
documentPane.Children.Add(this);
}
root?.Manager.LayoutUpdateStrategy?.AfterInsertDocument(root, this);
base.InternalDock();
}
public LayoutDocumentPaneGroup(LayoutDocumentPane documentPane)
{
Children.Add(documentPane);
}
