public static IGroupableItemsViewSource Create(GroupableItemsView itemsView, RecyclerView.Adapter adapter)
{
if (itemsView.IsGrouped)
{
return(new ObservableGroupedSource(itemsView, new AdapterNotifier(adapter)));
}
return(new UngroupedItemsSource(Create(itemsView.ItemsSource, adapter)));
}
public ObservableGroupedSource(GroupableItemsView groupableItemsView, ICollectionChangedNotifier notifier)
{
var groupSource = groupableItemsView.ItemsSource;
_notifier = notifier;
_groupSource = groupSource as IList ?? new ListSource(groupSource);
_hasGroupFooters = groupableItemsView.GroupFooterTemplate != null;
_hasGroupHeaders = groupableItemsView.GroupHeaderTemplate != null;
if (_groupSource is INotifyCollectionChanged incc)
{
incc.CollectionChanged += CollectionChanged;
}
UpdateGroupTracking();
}
public static void MapIsGrouped(GroupableItemsViewHandler <TItemsView> handler, GroupableItemsView itemsView)
{
}
public static void MapIsGrouped(GroupableItemsViewHandler <TItemsView> handler, GroupableItemsView itemsView)
{
handler.UpdateItemsSource();
}
public GroupableItemsViewController(GroupableItemsView groupableItemsView, ItemsViewLayout layout)
: base(groupableItemsView, layout)
{
_isGrouped = GroupableItemsView.IsGrouped;
}
public static GroupableItemsView GroupFooterTemplate(this GroupableItemsView items, DataTemplate template)
{
items.GroupFooterTemplate = template;
return(items);
}
public static GroupableItemsView IsGrouped(this GroupableItemsView items, bool isGrouped)
{
items.IsGrouped = isGrouped;
return(items);
}
public static GroupableItemsView GroupHeaderAndFooterTemplate(this GroupableItemsView items, DataTemplate headerTemplate, DataTemplate footerTemplate)
{
items.GroupHeaderTemplate = headerTemplate;
items.FooterTemplate = footerTemplate;
return(items);
}
