internal static List<StyleSheet> GetAllReferencedStyleSheets(this VisualTreeAsset vta)
{
var sheets = new HashSet<StyleSheet>();
foreach (var vea in vta.visualElementAssets)
if (vta.IsRootElement(vea) || vta.IsRootUXMLElement(vea))
GetAllReferencedStyleSheets(vea, sheets);
foreach (var vea in vta.templateAssets)
if (vta.IsRootElement(vea))
GetAllReferencedStyleSheets(vea, sheets);
return sheets.ToList();
}
static void ReinitElementWithNewParentAsset(
VisualTreeAsset vta, VisualElementAsset parent, VisualTreeAsset other,
Dictionary <int, List <VisualElementAsset> > otherIdToChildren,
VisualElementAsset vea, ref int nextOrderInDocument)
{
SwallowStyleRule(vta, other, vea);
// Set new parent id on root elements.
if (other.IsRootElement(vea) && parent != null)
{
vea.parentId = parent.id;
}
// Set order in document.
vea.orderInDocument = nextOrderInDocument;
nextOrderInDocument += BuilderConstants.VisualTreeAssetOrderIncrement;
// Create new id and update parentId in children.
var oldId = vea.id;
vea.id = VisualTreeAssetUtilities.GenerateNewId(vta, vea);
List <VisualElementAsset> children;
if (otherIdToChildren.TryGetValue(oldId, out children) && children != null)
{
foreach (var child in children)
{
child.parentId = vea.id;
}
}
}
public static VisualElementAsset ReparentElementInDocument(
VisualTreeAsset vta, VisualElementAsset vea,
VisualElementAsset newParent, int index = -1)
{
var idToChildren = GenerateIdToChildren(vta);
// HACK: We clear ALL stylesheets here if element is no longer at root.
// this is fine as long as we only support one uss but when we support more
// we need to make sure we only remove the stylesheets that make sense to remove.
// See: https://unity3d.atlassian.net/browse/UIT-469
if (vta.IsRootElement(vea) && newParent != null)
{
#if UNITY_2019_3_OR_NEWER
vea.stylesheetPaths.Clear();
vea.stylesheets.Clear();
#else
vea.stylesheets.Clear();
#endif
}
SetInitElementWithParent(vta, vea, newParent, idToChildren, index);
// Fix document ordering.
ReOrderDocument(vta);
return(vea);
}
