/// <summary>
/// Adds a meta robots tag to the head.
/// </summary>
public static void AddMetaRobots(this IPageAssetBuilder builder, string name = "robots", string content = "noindex")
{
Guard.NotEmpty(name, nameof(name));
Guard.NotEmpty(content, nameof(content));
var key = "meta_" + name + '_' + content;
AddHtmlContent(builder,
"head",
new HtmlString("<meta name=\"{0}\" content=\"{1}\" />".FormatInvariant(name, content)),
key);
}
public MenuFilter(
IMenuStorage menuStorage,
IMenuService menuService,
IWidgetProvider widgetProvider,
IPageAssetBuilder assetBuilder,
IDisplayHelper displayHelper)
{
_menuStorage = menuStorage;
_menuService = menuService;
_widgetProvider = widgetProvider;
_assetBuilder = assetBuilder;
_displayHelper = displayHelper;
}
/// <summary>
/// Adds custom html content to a target zone.
/// </summary>
/// <param name="targetZone">The zone name to render <paramref name="content"/> in.</param>
/// <param name="content">The html content to render.</param>
/// <param name="key">An optional key to ensure uniqueness within the target zone.</param>
/// <param name="prepend"><c>true</c> renders the <paramref name="content"/> before any zone content.</param>
public static void AddHtmlContent(this IPageAssetBuilder builder, string targetZone, IHtmlContent content, string key = null, bool prepend = false)
{
Guard.NotEmpty(targetZone, nameof(targetZone));
Guard.NotNull(content, nameof(content));
if (key.HasValue() && builder.WidgetProvider.ContainsWidget(targetZone, key))
{
return;
}
builder.WidgetProvider.RegisterWidget(
targetZone,
new HtmlWidgetInvoker(content)
{
Key = key, Prepend = prepend
});
}
private static void AddCssFilePartsInternal(IPageAssetBuilder builder, bool prepend, params string[] parts)
{
const string zoneName = "head_stylesheets";
if (parts.Length == 0)
{
return;
}
foreach (var href in parts.Select(x => x.Trim()))
{
AddHtmlContent(builder,
zoneName,
new HtmlString("<link href=\"{0}\" rel=\"stylesheet\" type=\"text/css\" />".FormatInvariant(builder.TryFindMinFile(href))),
href,
prepend);
}
}
private static void AddScriptPartsInternal(IPageAssetBuilder builder, AssetLocation location, bool prepend, params string[] parts)
{
if (parts.Length == 0)
{
return;
}
string zoneName = location == AssetLocation.Head ? "head_scripts" : "scripts";
foreach (var src in parts.Select(x => x.Trim()))
{
AddHtmlContent(builder,
zoneName,
new HtmlString("<script src=\"{0}\"></script>".FormatInvariant(builder.TryFindMinFile(src))),
src,
prepend);
}
}
private static void AddCanonicalUrlPartsInternal(IPageAssetBuilder builder, bool prepend, params string[] parts)
{
const string zoneName = "head_canonical";
if (parts.Length == 0)
{
return;
}
foreach (var href in parts.Select(x => x.Trim()))
{
AddHtmlContent(builder,
zoneName,
new HtmlString("<link rel=\"canonical\" href=\"{0}\" />".FormatInvariant(href)),
href,
prepend);
}
}
/// <summary> /// Prepends CSS file parts to the currently rendered page (rendered in zone <c>head_stylesheets</c>). /// </summary> /// <param name="parts">The parts to prepend.</param> public static void PrependCssFileParts(this IPageAssetBuilder builder, params string[] parts) => AddCssFilePartsInternal(builder, true, parts);
/// <summary> /// Prepends head script file parts to the currently rendered page (rendered in zone <c>head_scripts</c>). /// </summary> /// <param name="parts">The parts to prepend.</param> public static void PrependHeadScriptParts(this IPageAssetBuilder builder, params string[] parts) => AddScriptPartsInternal(builder, AssetLocation.Head, true, parts);
/// <summary> /// Appends foot script file parts to the currently rendered page (rendered in zone <c>scripts</c>). /// </summary> /// <param name="parts">The parts to append.</param> public static void AppendScriptParts(this IPageAssetBuilder builder, params string[] parts) => AddScriptPartsInternal(builder, AssetLocation.Foot, false, parts);
/// <summary> /// Appends canonical url parts to the currently rendered page (rendered in zone <c>head_canonical</c>). /// </summary> /// <param name="parts">The parts to append.</param> public static void AppendCanonicalUrlParts(this IPageAssetBuilder builder, params string[] parts) => AddCanonicalUrlPartsInternal(builder, false, parts);
/// <summary> /// Prepends meta keyword parts to the currently rendered page. /// </summary> /// <param name="parts">The parts to prepend.</param> public static void PrependMetaKeywordsParts(this IPageAssetBuilder builder, params string[] parts) => builder.AddMetaKeywordParts(parts, true);
/// <summary> /// Prepends meta description parts to the currently rendered page. /// </summary> /// <param name="parts">The parts to prepend.</param> public static void PrependMetaDescriptionParts(this IPageAssetBuilder builder, params string[] parts) => builder.AddMetaDescriptionParts(parts, true);
/// <summary> /// Prepends document title parts to the currently rendered page. /// </summary> /// <param name="parts">The parts to prepend.</param> public static void PrependTitleParts(this IPageAssetBuilder builder, params string[] parts) => builder.AddTitleParts(parts, true);
public PageAssetsTagHelper(IPageAssetBuilder assetBuilder, SeoSettings seoSettings)
{
_assetBuilder = assetBuilder;
_seoSettings = seoSettings;
}