public static void UpdateItemsSource(this TCollectionView platformView, ItemsView view)
{
if (view.ItemsSource is INotifyCollectionChanged collectionChanged)
{
if (_observableSource != null)
{
_observableSource.CollectionChanged -= OnCollectionChanged;
}
_observableSource = collectionChanged;
_observableSource.CollectionChanged += OnCollectionChanged;
}
UpdateAdaptor(platformView, view);
void OnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (view.ItemsSource == null || !view.ItemsSource.Cast <object>().Any())
{
platformView.Adaptor = EmptyItemAdaptor.Create(view);
}
else
{
if (platformView.Adaptor is EmptyItemAdaptor)
{
platformView.UpdateAdaptor(view);
}
}
}
}
void OnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (Element.ItemsSource == null || !Element.ItemsSource.Cast <object>().Any())
{
Control.Adaptor = EmptyItemAdaptor.Create(Element);
}
else
{
if (Control.Adaptor is EmptyItemAdaptor)
{
UpdateAdaptor(false);
}
}
}
public static void UpdateAdaptor(this TCollectionView platformView, ItemsView view)
{
if (view.ItemsSource == null || !view.ItemsSource.Cast <object>().Any())
{
platformView.Adaptor = EmptyItemAdaptor.Create(view);
}
else if (view.ItemTemplate == null)
{
platformView.Adaptor = new ItemDefaultTemplateAdaptor(view);
}
else
{
platformView.Adaptor = new ItemTemplateAdaptor(view);
}
platformView.Adaptor.ItemSelected += OnItemSelected;
}
protected void UpdateAdaptor(bool initialize)
{
if (!initialize)
{
if (Element.ItemsSource == null || !Element.ItemsSource.Cast <object>().Any())
{
Control.Adaptor = EmptyItemAdaptor.Create(Element);
}
else if (Element.ItemTemplate == null)
{
Control.Adaptor = new ItemDefaultTemplateAdaptor(Element);
}
else
{
Control.Adaptor = new ItemTemplateAdaptor(Element);
Control.Adaptor.ItemSelected += OnItemSelectedFromUI;
}
}
}
