public static void MoveAfter <T>(this IGraphModel self, IReadOnlyList <T> models, T insertAfter) where T : class, IGraphElementModel
{
List <T> list = (List <T>)self.GetListOf <T>();
if (insertAfter != null)
{
var insertAfterIndex = list.IndexOf(insertAfter);
while (insertAfterIndex >= 0 && models.Contains(list[insertAfterIndex]))
{
insertAfterIndex--;
}
if (insertAfterIndex >= 0)
{
insertAfter = list[insertAfterIndex];
}
else
{
insertAfter = null;
}
}
foreach (var model in models)
{
list.Remove(model);
}
var insertionIndex = 0;
if (insertAfter != null)
{
insertionIndex = list.IndexOf(insertAfter) + 1;
}
foreach (var model in models)
{
list.Insert(insertionIndex++, model);
}
}
public static void MoveBefore <T>(this IGraphModel self, IReadOnlyList <T> models, T insertBefore) where T : class, IGraphElementModel
{
List <T> list = (List <T>)self.GetListOf <T>();
if (insertBefore != null)
{
var insertBeforeIndex = list.IndexOf(insertBefore);
while (insertBeforeIndex < list.Count && models.Contains(list[insertBeforeIndex]))
{
insertBeforeIndex++;
}
if (insertBeforeIndex < list.Count)
{
insertBefore = list[insertBeforeIndex];
}
else
{
insertBefore = null;
}
}
foreach (var model in models)
{
list.Remove(model);
}
var insertionIndex = list.Count;
if (insertBefore != null)
{
insertionIndex = list.IndexOf(insertBefore);
}
foreach (var model in models)
{
list.Insert(insertionIndex++, model);
}
}
