public static async Task <IHtmlContent> GetMenu(this Microsoft.AspNetCore.Mvc.Razor.RazorPage razorPage, Delegate menuItemFunction)
{
if (menuItemFunction == null)
{
return(null);
}
IServiceProvider serviceProvider = razorPage.Context.RequestServices;
object[] arguments = menuItemFunction.GetMethodInfo().GetParameters().Select(x => serviceProvider.GetService(x.ParameterType)).ToArray();
object funcReturnValue = menuItemFunction.DynamicInvoke(arguments);
IEnumerable <IMenuItem> menuItems;
if (funcReturnValue is IEnumerable <IMenuItem> )
{
menuItems = (IEnumerable <IMenuItem>)funcReturnValue;
}
else if (funcReturnValue is Task <IEnumerable <IMenuItem> > )
{
menuItems = await(Task <IEnumerable <IMenuItem> >) funcReturnValue;
}
else
{
menuItems = null;
}
if (menuItems == null)
{
return(null);
}
return(GetMenu(razorPage, menuItems));
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public static HtmlString Content(this Microsoft.AspNetCore.Mvc.Razor.RazorPage page, string path, params object[] args)
{
string contentPath = string.Format("~/" + path.Trim(new char[]
{
'/',
'~',
'\\',
'.'
}), args);
return(new HtmlString(new UrlHelper(page.ViewContext).Content(contentPath)));
}
public static IHtmlContent GetMenu(this Microsoft.AspNetCore.Mvc.Razor.RazorPage razorPage, IEnumerable <IMenuItem> menuItems)
{
if (menuItems == null)
{
return(null);
}
IUrlHelper urlHelper = razorPage.GetType().GetTypeInfo().GetProperty("Url").GetValue(razorPage) as IUrlHelper;
if (urlHelper == null)
{
return(null);
}
HtmlContentBuilder builder = new HtmlContentBuilder();
foreach (IMenuItem menuItem in menuItems.Where(x => x != null))
{
builder.AppendHtml(WriteMenuItemToBuilder(razorPage, urlHelper, menuItem));
}
return(builder);
}
static IHtmlContent WriteMenuItemToBuilder(this Microsoft.AspNetCore.Mvc.Razor.RazorPage razorPage, IUrlHelper helper, IMenuItem menuItem)
{
TagBuilder liTag = new TagBuilder("li");
if (menuItem.IsSeparator)
{
liTag.AddCssClass("divider");
liTag.Attributes.Add("role", "separator");
return(liTag);
}
List <IMenuItem> subItems = menuItem.SubItems.ToList();
TagBuilder aTag = new TagBuilder("a");
if (!menuItem.IsVisible)
{
liTag.AddCssClass("hidden");
}
else if (!menuItem.IsEnabled)
{
liTag.AddCssClass("disabled");
}
else if (!string.IsNullOrWhiteSpace(menuItem.Url))
{
aTag.Attributes.Add("href", menuItem.Url);
}
else if (!string.IsNullOrEmpty(menuItem.Action) && menuItem.Controller != null)
{
ControllerActionDescriptor actionDescriptor = razorPage.ViewContext.ActionDescriptor as ControllerActionDescriptor;
if (actionDescriptor?.ActionName == menuItem.Action && actionDescriptor?.ControllerName == menuItem.Controller)
{
liTag.AddCssClass("active");
}
aTag.Attributes.Add("href", helper.Action(menuItem.Action, menuItem.Controller, menuItem.RouteValues));
}
else
{
aTag.Attributes.Add("href", "#");
}
aTag.InnerHtml.Append(menuItem.Name);
liTag.InnerHtml.AppendHtml(aTag);
if (subItems.Count != 0)
{
aTag.AddCssClass("dropdown-toggle");
aTag.Attributes.Add("data-toggle", "dropdown");
aTag.Attributes.Add("role", "button");
aTag.Attributes.Add("aria-haspopup", "true");
aTag.Attributes.Add("aria-expanded", "false");
TagBuilder spanCaret = new TagBuilder("span");
spanCaret.AddCssClass("caret");
aTag.InnerHtml.AppendHtml(spanCaret);
TagBuilder ulTag = new TagBuilder("ul");
ulTag.AddCssClass("dropdown-menu");
foreach (IMenuItem subItem in subItems)
{
ulTag.InnerHtml.AppendHtml(WriteMenuItemToBuilder(razorPage, helper, subItem));
}
liTag.InnerHtml.AppendHtml(ulTag);
}
return(liTag);
}
/// <summary>
/// model验证错误信息
/// </summary>
public static IEnumerable <Never.Web.Mvc.Controllers.BasicController.ModelStateError> ModelError(this Microsoft.AspNetCore.Mvc.Razor.RazorPage page)
{
if (page.TempData["ModelErrorKey"] != null)
{
return((IEnumerable <Never.Web.Mvc.Controllers.BasicController.ModelStateError>)page.TempData["ModelErrorKey"]);
}
var list = ModelError(page.ViewContext);
if (list != null)
{
page.TempData["ModelErrorKey"] = list.ToList();
}
else
{
page.TempData["ModelErrorKey"] = new Never.Web.Mvc.Controllers.BasicController.ModelStateError[0];
}
return(list);
}
/// <summary>
/// 获取Model的错误信息
/// </summary>
/// <param name="page"></param>
/// <returns></returns>
public static string ModelErrorMessage(this Microsoft.AspNetCore.Mvc.Razor.RazorPage page)
{
return(ModelErrorMessage(page.ViewContext));
}
