private View GetItemView(int position, View convertView, int templateId)
{
if (AdjustPosition(position) >= ItemsSource.Count())
{
return(null);
}
if (templateId == 0)
{
var view = convertView;
var source = GetRawItem(position);
if (view == null)
{
var template = Windows.UI.Xaml.DataTemplateHelper.ResolveTemplate(
this.ItemTemplate,
this.ItemTemplateSelector,
source,
null
);
view = template?.LoadContentCached();
view.Click += ItemViewClicked;
view.LongClick += ItemViewLongClicked;
}
view.Tag = position.ToStringInvariant();
var bindable = view as IDataContextProvider;
if (bindable != null)
{
bindable.DataContext = GetRawItem(position);
}
return(view);
}
else
{
var bindableView = convertView as BindableView;
if (bindableView.SelectOrDefault(v => v.LayoutId != templateId, true))
{
bindableView = new BindableView(Context, templateId);
bindableView.Click += ItemViewClicked;
bindableView.LongClick += ItemViewLongClicked;
}
bindableView.Tag = position.ToString(CultureInfo.InvariantCulture);
bindableView.DataContext = GetRawItem(position);
return(bindableView);
}
}
private View CreateView(Android.Content.Context context, int templateId, object source)
{
BindableView view = null;
if (templateId != 0)
{
view = new BindableView(context, templateId);
view.DataContext = source;
}
return(view);
}
protected virtual View GetBindableView(View convertView, object source, int templateId, ViewGroup parent)
{
if (templateId == 0)
{
// no template seen - so use a standard string view from Android and use ToString()
return(GetSimpleView(convertView, source));
}
var bindableView = convertView as BindableView;
if (convertView == null)
{
bindableView = new BindableView(parent.Context, templateId);
}
bindableView.DataContext = source;
return(bindableView);
}
protected virtual View GetBindableView(View convertView, object source, ViewGroup parent, int templateId)
{
if (templateId == 0)
{
// no template seen - so use a standard string view from Android and use ToString()
var view = GetSimpleView(convertView, source, parent);
var bindable = view as IDataContextProvider;
var viewGroup = view as ViewGroup;
if (viewGroup != null)
{
// This is here to avoid disabling the ItemClick event when an Item Template has a button
// as any of its children.
viewGroup.DescendantFocusability = Android.Views.DescendantFocusability.BlockDescendants;
}
if (bindable != null)
{
bindable.DataContext = source;
}
return(view);
}
var bindableView = convertView as BindableView;
if (convertView == null || bindableView.LayoutId != templateId)
{
bindableView = new BindableView(_context, templateId);
_allocatedViews.Add(bindableView);
}
bindableView.DataContext = source;
return(bindableView);
}
internal Enumerator(_BindableView owner)
{
_inner = owner.GetChildrenEnumerator();
}
