protected override int GetSortOrder(ItemTreeViewItem item)
{
Debug.ArgumentNotNull(item, nameof(item));
var parent = item.GetParentTreeViewItem();
if (parent == null)
{
return(item.Item.SortOrder);
}
var last = parent.Items[parent.Items.Count - 1] as ItemTreeViewItem;
if (last == null)
{
return(item.Item.SortOrder);
}
return(last.Item.SortOrder + 100);
}
protected override int GetSortOrder(ItemTreeViewItem item)
{
Debug.ArgumentNotNull(item, nameof(item));
var parent = item.GetParentTreeViewItem();
if (parent == null)
{
return(item.Item.SortOrder);
}
var index = parent.Items.IndexOf(item);
if (index <= 0)
{
return(item.Item.SortOrder);
}
var previous = parent.Items[index - 1] as ItemTreeViewItem;
if (previous == null)
{
return(item.Item.SortOrder);
}
if (index == 1)
{
return(previous.Item.SortOrder - 100);
}
var previousPrevious = parent.Items[index - 2] as ItemTreeViewItem;
if (previousPrevious == null)
{
return(item.Item.SortOrder);
}
return(previousPrevious.Item.SortOrder + (previous.Item.SortOrder - previousPrevious.Item.SortOrder) / 2);
}
protected override int GetSortOrder(ItemTreeViewItem item)
{
Debug.ArgumentNotNull(item, nameof(item));
var parent = item.GetParentTreeViewItem();
if (parent == null)
{
return(item.Item.SortOrder);
}
var index = parent.Items.IndexOf(item);
if (index < 0 || index == parent.Items.Count - 1)
{
return(item.Item.SortOrder);
}
var next = parent.Items[index + 1] as ItemTreeViewItem;
if (next == null)
{
return(item.Item.SortOrder);
}
if (index == parent.Items.Count - 2)
{
return(next.Item.SortOrder + 100);
}
var nextNext = parent.Items[index + 2] as ItemTreeViewItem;
if (nextNext == null)
{
return(item.Item.SortOrder);
}
return(next.Item.SortOrder + (nextNext.Item.SortOrder - next.Item.SortOrder) / 2);
}
private static void GetAfterSortOrder([NotNull] ItemTreeViewItem target, int itemCount, out int sortOrder, out int sortOrderDelta, [CanBeNull] out ItemTreeViewItem parent, [CanBeNull] out ItemTreeViewItem anchor)
{
Debug.ArgumentNotNull(target, nameof(target));
sortOrder = target.Item.SortOrder;
parent = null;
anchor = null;
var itemsControl = target.GetParentTreeViewItem();
if (itemsControl == null)
{
sortOrder += 100;
sortOrderDelta = 100;
return;
}
parent = itemsControl as ItemTreeViewItem;
if (parent == null)
{
sortOrder -= itemCount * 100;
sortOrderDelta = 100;
return;
}
var index = itemsControl.Items.IndexOf(target);
if (index < 0 || index == itemsControl.Items.Count - 1)
{
sortOrder += 100;
sortOrderDelta = 100;
return;
}
var nextItem = itemsControl.Items[index + 1] as ItemTreeViewItem;
if (nextItem == null)
{
sortOrder += 100;
sortOrderDelta = 100;
return;
}
anchor = nextItem;
var nextSortOrder = nextItem.Item.SortOrder;
if (nextSortOrder == sortOrder)
{
var sort = 0;
var fieldId = IdManager.GetFieldId("/sitecore/templates/System/Templates/Sections/Appearance/Appearance/__Sortorder");
for (var i = 0; i < parent.Items.Count; i++)
{
var item = parent.Items[i] as ItemTreeViewItem;
if (item != null)
{
ItemModifier.Edit(item.Item.ItemUri, fieldId, sort.ToString());
item.Item.SortOrder = sort;
}
sort += i == index ? (itemCount + 1) * 100 : 100;
}
sortOrder = index * 100;
nextSortOrder = sortOrder + (itemCount + 1) * 100;
}
var gap = nextSortOrder - sortOrder;
sortOrderDelta = gap / (itemCount + 1);
if (sortOrderDelta == 0)
{
sortOrder = sortOrder + (int)Math.Floor((double)gap / 2);
return;
}
sortOrder += sortOrderDelta;
}
