protected override async Task ProcessCoreAsync(TagHelperContext context, TagHelperOutput output)
{
var isHtmlTag = output.TagName != "zone";
var widgets = await _widgetSelector.GetWidgetsAsync(ZoneName, ViewContext.ViewData.Model);
if (!isHtmlTag)
{
// Never render <zone> tag
output.TagName = null;
}
if (widgets.Any())
{
if (ReplaceContent)
{
output.Content.SetContent(string.Empty);
}
foreach (var widget in widgets)
{
var target = widget.Prepend ? output.PreContent : output.PostContent;
var viewContext = Model == null ? ViewContext : ViewContext.Clone(Model);
target.AppendHtml(await widget.InvokeAsync(viewContext));
}
}
else
{
// No widgets
if (RemoveIfEmpty && output.TagName.HasValue())
{
var childContent = await output.GetChildContentAsync();
if (childContent.IsEmptyOrWhiteSpace)
{
output.TagName = null;
}
}
}
}