/// <summary>
/// Creates a string containing the referrer meta tags. <see cref="ReferrerMode"/> for more information.
/// </summary>
/// <param name="htmlHelper">The HTML helper.</param>
/// <param name="referrerMode">The type of referrer allowed to be sent.</param>
/// <returns>The referrer meta tag.</returns>
public static HtmlString ReferrerMeta(this IHtmlHelper htmlHelper, ReferrerMode referrerMode)
{
if (referrerMode == ReferrerMode.NoneWhenDowngrade)
{
return(null);
}
return(new HtmlString("<meta name=\"referrer\" content=\"" + referrerMode.ToLowercaseString() + "\">"));
}
/// <summary>
/// Creates a string containing the referrer meta tags. <see cref="ReferrerMode"/> for more information.
/// </summary>
/// <param name="htmlHelper">The HTML helper.</param>
/// <param name="referrerMode">The type of referrer allowed to be sent.</param>
/// <returns>The referrer meta tag.</returns>
public static IHtmlString ReferrerMeta(this HtmlHelper htmlHelper, ReferrerMode referrerMode)
{
if (referrerMode == ReferrerMode.NoneWhenDowngrade)
{
return null;
}
return new MvcHtmlString("<meta name=\"referrer\" content=\"" + referrerMode.ToLowercaseString() + "\">");
}
/// <summary>
/// Creates a string containing the referrer meta tags. <see cref="ReferrerMode"/> for more information.
/// </summary>
/// <param name="htmlHelper">The HTML helper.</param>
/// <param name="referrerMode">The type of referrer allowed to be sent.</param>
/// <returns>The referrer meta tag.</returns>
public static HtmlString ReferrerMeta(this IHtmlHelper htmlHelper, ReferrerMode referrerMode)
{
if (htmlHelper is null)
{
throw new ArgumentNullException(nameof(htmlHelper));
}
if (referrerMode == ReferrerMode.NoneWhenDowngrade)
{
return(null);
}
return(new HtmlString("<meta name=\"referrer\" content=\"" + referrerMode.ToLowercaseString() + "\">"));
}
/// <summary>
/// Returns the lower-case <see cref="string" /> representation of the <see cref="ReferrerMode" />.
/// </summary>
/// <param name="referrerMode">The referrer mode.</param>
/// <returns>
/// The lower-case <see cref="string" /> representation of the <see cref="ReferrerMode" />.
/// </returns>
public static string ToLowercaseString(this ReferrerMode referrerMode)
{
switch (referrerMode)
{
case ReferrerMode.None:
return("none");
case ReferrerMode.NoneWhenDowngrade:
return("none-when-downgrade");
case ReferrerMode.Origin:
return("origin");
case ReferrerMode.OriginWhenCrossOrigin:
return("origin-when-crossorigin");
case ReferrerMode.UnsafeUrl:
return("unsafe-url");
default:
return(string.Empty);
}
}
