private static BreadcrumbsViewModel GetBreadCrumbsViewModel(IUIViewHelper helper)
{
var pageViewModel = helper.HtmlHelper.ViewData.Model as IPageRoutableViewModel;
if (pageViewModel != null)
{
return(GetBreadcrumbs(pageViewModel.PageRoutingHelper));
}
return(null);
}
/// <summary>
/// Renders a list of breadcrumb links using the default template.
/// </summary>
public static HtmlString Breadcrumbs(this IUIViewHelper helper)
{
var vm = GetBreadCrumbsViewModel(helper);
if (vm == null)
{
return(null);
}
var list = new TagBuilder("ol");
list.Attributes["id"] = "breadcrumbs";
list.Attributes["role"] = "navigation";
foreach (BreadcrumbViewModel breadCrumb in vm.Breadcrumbs)
{
var itemEl = new TagBuilder("li");
if (breadCrumb == vm.Breadcrumbs.First())
{
itemEl.AddCssClass("first");
}
if (breadCrumb == vm.Breadcrumbs.Last())
{
itemEl.AddCssClass("last");
}
if (breadCrumb.HasHref)
{
var link = new TagBuilder("a");
link.Attributes.Add("href", breadCrumb.Href);
link.SetInnerText(breadCrumb.Title);
itemEl.InnerHtml = link.ToString();
}
else
{
itemEl.SetInnerText(breadCrumb.Title);
}
list.InnerHtml += itemEl.ToString();
}
return(new HtmlString(list.ToString()));
}
/// <summary>
/// Renders a list of breadcrumb links using the specified template.
/// </summary>
/// <param name="partialViewName">The name of the partialview to use when rendering the breadcrumb view model</param>
public static HtmlString Breadcrumbs(this IUIViewHelper helper, string partialViewName)
{
return(helper.HtmlHelper.Partial(partialViewName, GetBreadCrumbsViewModel(helper)));
}
