void Layout_ElementAdded(object sender, LayoutElementEventArgs e)
{
if (_suspendLayoutItemCreation)
return;
if (e.Element is LayoutDocument)
{
var document = e.Element as LayoutDocument;
var documentItem = new LayoutDocumentItem();
documentItem.Attach(document);
ApplyStyleToLayoutItem(documentItem);
_layoutItems.Add(documentItem);
}
else if (e.Element is LayoutAnchorable)
{
var anchorable = e.Element as LayoutAnchorable;
var anchorableItem = new LayoutAnchorableItem();
anchorableItem.Attach(anchorable);
ApplyStyleToLayoutItem(anchorableItem);
_layoutItems.Add(anchorableItem);
}
else if (e.Element is ILayoutContainer)
{
foreach (var document in e.Element.Descendents().OfType<LayoutDocument>().ToArray())
{
var documentItem = new LayoutDocumentItem();
documentItem.Attach(document);
ApplyStyleToLayoutItem(documentItem);
_layoutItems.Add(documentItem);
}
foreach (var anchorable in e.Element.Descendents().OfType<LayoutAnchorable>().ToArray())
{
var anchorableItem = new LayoutAnchorableItem();
anchorableItem.Attach(anchorable);
ApplyStyleToLayoutItem(anchorableItem);
_layoutItems.Add(anchorableItem);
}
}
}
void CreateDocumentLayoutItem(LayoutDocument contentToAttach)
{
if (_layoutItems.Any(item => item.LayoutElement == contentToAttach))
return;
var layoutItem = new LayoutDocumentItem();
layoutItem.Attach(contentToAttach);
ApplyStyleToLayoutItem(layoutItem);
_layoutItems.Add(layoutItem);
if (contentToAttach != null &&
contentToAttach.Content != null &&
contentToAttach.Content is UIElement)
{
InternalAddLogicalChild(contentToAttach.Content);
}
}
void AttachLayoutItems()
{
if (Layout != null)
{
foreach (var document in Layout.Descendents().OfType<LayoutDocument>().ToArray())
{
var documentItem = new LayoutDocumentItem();
documentItem.Attach(document);
ApplyStyleToLayoutItem(documentItem);
_layoutItems.Add(documentItem);
}
foreach (var anchorable in Layout.Descendents().OfType<LayoutAnchorable>().ToArray())
{
var anchorableItem = new LayoutAnchorableItem();
anchorableItem.Attach(anchorable);
ApplyStyleToLayoutItem(anchorableItem);
_layoutItems.Add(anchorableItem);
}
Layout.ElementAdded += new EventHandler<LayoutElementEventArgs>(Layout_ElementAdded);
Layout.ElementRemoved += new EventHandler<LayoutElementEventArgs>(Layout_ElementRemoved);
}
}