protected override void Refresh()
{
var manager = GetCollectionViewManager();
for (int i = 0; i < _actionBar.TabCount; i++)
{
ActionBarTabTemplate.ClearTab(_actionBar, _actionBar.GetTabAt(i), true);
}
if (manager == null)
{
_actionBar.RemoveAllTabs();
}
else
{
manager.Clear(_actionBar);
}
IEnumerable itemsSource = ItemsSource;
if (itemsSource == null)
{
return;
}
#if APPCOMPAT
var selectedItem = _actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.SelectedItem);
#else
var selectedItem = _actionBar.GetBindingMemberValue(AttachedMembers.ActionBar.SelectedItem);
#endif
int count = itemsSource.Count();
for (int index = 0; index < count; index++)
{
var item = GetItem(index);
var tab = CreateTab(item);
if (manager == null)
{
_actionBar.AddTab(tab, index, ReferenceEquals(selectedItem, item));
}
else
{
manager.Insert(_actionBar, index, tab);
}
}
if (count == 0)
{
OnEmptyTab();
}
}
