private bool previewTest(MultiSourceTreeNode node, NodeInfo info) { // Check to see if the tag is previewable and isn't already open. if (game.TypeTable.Previewable(Path.GetExtension(info.Identifier).TrimStart('.'))) { TagPath path = new TagPath(info.Identifier, game.GameID, TagLocation.Project); return(!RenderCore.ContainsScene(path.ToPath())); } return(false); }