TemplatedItemsList <TView, TItem> InsertGrouped(object item, int index)
{
var children = item as IEnumerable;
var groupProxy = new TemplatedItemsList <TView, TItem>(this, children, _itemsView, _itemTemplateProperty);
if (GroupDisplayBinding != null)
{
groupProxy.SetBinding(NameProperty, GroupDisplayBinding.Clone());
}
else if (GroupHeaderTemplate == null && item != null)
{
groupProxy.Name = item.ToString();
}
if (GroupShortNameBinding != null)
{
groupProxy.SetBinding(ShortNameProperty, GroupShortNameBinding.Clone());
}
groupProxy.BindingContext = item;
if (GroupHeaderTemplate != null)
{
groupProxy.HeaderContent = (TItem)GroupHeaderTemplate.CreateContent(groupProxy.ItemsSource, _itemsView);
groupProxy.HeaderContent.BindingContext = groupProxy.ItemsSource;
//groupProxy.HeaderContent.BindingContext = groupProxy;
//groupProxy.HeaderContent.SetBinding (BindingContextProperty, "ItemsSource");
}
else
{
// HACK: TemplatedItemsList shouldn't assume what the default is, but it needs
// to be able to setup bindings. Needs some internal-API tweaking there isn't
// time for right now.
groupProxy.HeaderContent = _itemsView.CreateDefault(ListProxy.ProxiedEnumerable);
groupProxy.HeaderContent.BindingContext = groupProxy;
groupProxy.HeaderContent.SetBinding(TextCell.TextProperty, "Name");
}
SetIndex(groupProxy.HeaderContent, index);
SetIsGroupHeader(groupProxy.HeaderContent, true);
_itemsView.SetupContent(groupProxy.HeaderContent, index);
_templatedObjects.Insert(index, groupProxy.HeaderContent);
_groupedItems.Insert(index, item, groupProxy);
groupProxy.CollectionChanged += OnInnerCollectionChanged;
return(groupProxy);
}
void OnShortNameBindingChanged()
{
if (!IsGroupingEnabled)
{
return;
}
if (GroupShortNameBinding != null && _shortNames == null)
{
_shortNames = new ShortNamesProxy(this);
}
else if (GroupShortNameBinding == null && _shortNames != null)
{
_shortNames.Dispose();
_shortNames = null;
}
if (_groupedItems != null)
{
if (GroupShortNameBinding == null)
{
foreach (TemplatedItemsList <TView, TItem> list in _groupedItems.Values)
{
list.SetValue(ShortNameProperty, null);
}
return;
}
foreach (TemplatedItemsList <TView, TItem> list in _groupedItems.Values)
{
list.SetBinding(ShortNameProperty, GroupShortNameBinding.Clone());
}
}
if (_shortNames != null)
{
_shortNames.Reset();
}
}
