public static void TreeEntityMove <T>(T t, MoveTreeModel model) where T : TreeEntity, new()
{
TreeLogic.FixRouteAndNames(t, model);
t.Save();
if (MixinDeclarations.IsDeclared(typeof(T), typeof(DisabledMixin)) && model.NewParent != null && model.NewParent.InDB(e => e.Mixin <DisabledMixin>().IsDisabled) && !t.Mixin <DisabledMixin>().IsDisabled)
{
t.Execute(DisableOperation.Disable);
}
}
private static SqlHierarchyId GetNewPosition <T>(MoveTreeModel model, TreeEntity entity)
where T : TreeEntity
{
var newParentRoute = model.NewParent == null?SqlHierarchyId.GetRoot() : model.NewParent.InDB(a => a.Route);
if (newParentRoute.IsDescendantOf(entity.Route))
{
throw new Exception(TreeMessage.ImpossibleToMove0InsideOf1.NiceToString(entity, model.NewParent));
}
if (model.InsertPlace == InsertPlace.FirstNode)
{
return(newParentRoute.GetDescendant(SqlHierarchyId.Null, FirstChild <T>(newParentRoute)));
}
if (model.InsertPlace == InsertPlace.LastNode)
{
return(newParentRoute.GetDescendant(LastChild <T>(newParentRoute), SqlHierarchyId.Null));
}
var newSiblingRoute = model.Sibling !.InDB(a => a.Route);
if (!newSiblingRoute.IsDescendantOf(newParentRoute) ||
newSiblingRoute.GetLevel() != newParentRoute.GetLevel() + 1 ||
newSiblingRoute == entity.Route)
{
throw new Exception(TreeMessage.ImpossibleToMove01Of2.NiceToString(entity, model.InsertPlace.NiceToString(), model.NewParent));
}
if (model.InsertPlace == InsertPlace.After)
{
return(newParentRoute.GetDescendant(newSiblingRoute, Next <T>(newSiblingRoute)));
}
if (model.InsertPlace == InsertPlace.Before)
{
return(newParentRoute.GetDescendant(Previous <T>(newSiblingRoute), newSiblingRoute));
}
throw new InvalidOperationException("Unexpected InsertPlace " + model.InsertPlace);
}
internal static void FixRouteAndNames <T>(T t, MoveTreeModel model)
where T : TreeEntity
{
var list = t.Descendants().Where(c => c != t).ToList();
var oldNode = t.Route;
t.Route = GetNewPosition <T>(model, t);
t.Save();
CalculateFullName(t);
t.Save();
foreach (T h in list)
{
h.Route = h.Route.GetReparentedValue(oldNode, t.Route);
h.Save();
CalculateFullName(h);
h.Save();
}
}
