private static void AppendHtml(TagBuilder tagBuilder, string innerHtml) { tagBuilder.InnerHtml.AppendHtml(innerHtml); }
///<summary> /// Displays a configurable paging control for instances of PagedList. ///</summary> ///<param name = "html">This method is meant to hook off HtmlHelper as an extension method.</param> ///<param name = "list">The PagedList to use as the data source.</param> ///<param name = "generatePageUrl">A function that takes the page number of the desired page and returns a URL-string that will load that page.</param> ///<param name = "options">Formatting options.</param> ///<returns>Outputs the paging control HTML.</returns> public static HtmlString PagedListPager(this IHtmlHelper html, IPagedList list, Func <int, string> generatePageUrl, PagedListRenderOptionsBase options) { if (options.Display == PagedListDisplayMode.Never || (options.Display == PagedListDisplayMode.IfNeeded && list.PageCount <= 1)) { return(null); } var listItemLinks = new List <TagBuilder>(); //calculate start and end of range of page numbers var firstPageToDisplay = 1; var lastPageToDisplay = list.PageCount; var pageNumbersToDisplay = lastPageToDisplay; if (options.MaximumPageNumbersToDisplay.HasValue && list.PageCount > options.MaximumPageNumbersToDisplay) { // cannot fit all pages into pager var maxPageNumbersToDisplay = options.MaximumPageNumbersToDisplay.Value; firstPageToDisplay = list.PageNumber - maxPageNumbersToDisplay / 2; if (firstPageToDisplay < 1) { firstPageToDisplay = 1; } pageNumbersToDisplay = maxPageNumbersToDisplay; lastPageToDisplay = firstPageToDisplay + pageNumbersToDisplay - 1; if (lastPageToDisplay > list.PageCount) { firstPageToDisplay = list.PageCount - maxPageNumbersToDisplay + 1; } } //first if (options.DisplayLinkToFirstPage == PagedListDisplayMode.Always || (options.DisplayLinkToFirstPage == PagedListDisplayMode.IfNeeded && firstPageToDisplay > 1)) { listItemLinks.Add(First(list, generatePageUrl, options)); } //previous if (options.DisplayLinkToPreviousPage == PagedListDisplayMode.Always || (options.DisplayLinkToPreviousPage == PagedListDisplayMode.IfNeeded && !list.IsFirstPage)) { listItemLinks.Add(Previous(list, generatePageUrl, options)); } //text if (options.DisplayPageCountAndCurrentLocation) { listItemLinks.Add(PageCountAndLocationText(list, options)); } //text if (options.DisplayItemSliceAndTotal) { listItemLinks.Add(ItemSliceAndTotalText(list, options)); } //page if (options.DisplayLinkToIndividualPages) { //if there are previous page numbers not displayed, show an ellipsis if (options.DisplayEllipsesWhenNotShowingAllPageNumbers && firstPageToDisplay > 1) { listItemLinks.Add(Ellipses(options)); } foreach (var i in Enumerable.Range(firstPageToDisplay, pageNumbersToDisplay)) { //show delimiter between page numbers if (i > firstPageToDisplay && !string.IsNullOrWhiteSpace(options.DelimiterBetweenPageNumbers)) { listItemLinks.Add(WrapInListItem(options.DelimiterBetweenPageNumbers)); } //show page number link listItemLinks.Add(Page(i, list, generatePageUrl, options)); } //if there are subsequent page numbers not displayed, show an ellipsis if (options.DisplayEllipsesWhenNotShowingAllPageNumbers && (firstPageToDisplay + pageNumbersToDisplay - 1) < list.PageCount) { listItemLinks.Add(Ellipses(options)); } } //next if (options.DisplayLinkToNextPage == PagedListDisplayMode.Always || (options.DisplayLinkToNextPage == PagedListDisplayMode.IfNeeded && !list.IsLastPage)) { listItemLinks.Add(Next(list, generatePageUrl, options)); } //last if (options.DisplayLinkToLastPage == PagedListDisplayMode.Always || (options.DisplayLinkToLastPage == PagedListDisplayMode.IfNeeded && lastPageToDisplay < list.PageCount)) { listItemLinks.Add(Last(list, generatePageUrl, options)); } if (listItemLinks.Any()) { //append class to first item in list? if (!string.IsNullOrWhiteSpace(options.ClassToApplyToFirstListItemInPager)) { listItemLinks.First().AddCssClass(options.ClassToApplyToFirstListItemInPager); } //append class to last item in list? if (!string.IsNullOrWhiteSpace(options.ClassToApplyToLastListItemInPager)) { listItemLinks.Last().AddCssClass(options.ClassToApplyToLastListItemInPager); } //append classes to all list item links foreach (var li in listItemLinks) { foreach (var c in options.LiElementClasses ?? Enumerable.Empty <string>()) { li.AddCssClass(c); } } } //collapse all of the list items into one big string var listItemLinksString = listItemLinks.Aggregate( new StringBuilder(), (sb, listItem) => sb.Append(TagBuilderToString(listItem, options.HtmlEncoder)), sb => sb.ToString() ); var ul = new TagBuilder("ul"); AppendHtml(ul, listItemLinksString); foreach (var c in options.UlElementClasses ?? Enumerable.Empty <string>()) { ul.AddCssClass(c); } if (options.UlElementattributes != null) { foreach (var c in options.UlElementattributes) { ul.MergeAttribute(c.Key, c.Value); } } var outerDiv = new TagBuilder("div"); foreach (var c in options.ContainerDivClasses ?? Enumerable.Empty <string>()) { outerDiv.AddCssClass(c); } AppendHtml(outerDiv, TagBuilderToString(ul, options.HtmlEncoder)); return(new HtmlString(TagBuilderToString(outerDiv, options.HtmlEncoder))); }
private static void SetInnerText(TagBuilder tagBuilder, string innerText) { tagBuilder.InnerHtml.SetContent(innerText); }