/// <summary>
/// 生成最终的分页Html代码
/// </summary>
/// <returns></returns>
internal MvcHtmlString RenderPager()
{
//return null if total page count less than or equal to 1
if (_totalPageCount <= 1 && _pagerOptions.AutoHide)
{
return(MvcHtmlString.Create(CopyrightText));
}
//Display error message if pageIndex out of range
if ((_pageIndex > _totalPageCount && _totalPageCount > 0) || _pageIndex < 1)
{
return
(MvcHtmlString.Create(string.Format("{0}<div style=\"color:red;font-weight:bold\">{1}</div>{0}",
CopyrightText, _pagerOptions.PageIndexOutOfRangeErrorMessage)));
}
var pagerItems = new List <PagerItem>();
//First page
if (_pagerOptions.ShowFirstLast)
{
AddFirst(pagerItems);
}
// Prev page
if (_pagerOptions.ShowPrevNext)
{
AddPrevious(pagerItems);
}
if (_pagerOptions.ShowNumericPagerItems)
{
if (_pagerOptions.AlwaysShowFirstLastPageNumber && _startPageIndex > 1)
{
pagerItems.Add(new PagerItem("1", 1, false, PagerItemType.NumericPage));
}
// more page before numeric page buttons
if (_pagerOptions.ShowMorePagerItems && ((!_pagerOptions.AlwaysShowFirstLastPageNumber && _startPageIndex > 1) || (_pagerOptions.AlwaysShowFirstLastPageNumber && _startPageIndex > 2)))
{
AddMoreBefore(pagerItems);
}
// numeric page
AddPageNumbers(pagerItems);
// more page after numeric page buttons
if (_pagerOptions.ShowMorePagerItems && ((!_pagerOptions.AlwaysShowFirstLastPageNumber && _endPageIndex < _totalPageCount) || (_pagerOptions.AlwaysShowFirstLastPageNumber && _totalPageCount > _endPageIndex + 1)))
{
AddMoreAfter(pagerItems);
}
if (_pagerOptions.AlwaysShowFirstLastPageNumber && _endPageIndex < _totalPageCount)
{
pagerItems.Add(new PagerItem(_totalPageCount.ToString(CultureInfo.InvariantCulture), _totalPageCount, false,
PagerItemType.NumericPage));
}
}
// Next page
if (_pagerOptions.ShowPrevNext)
{
AddNext(pagerItems);
}
//Last page
if (_pagerOptions.ShowFirstLast)
{
AddLast(pagerItems);
}
var sb = new StringBuilder();
if (_ajaxPagingEnabled)
{
foreach (PagerItem item in pagerItems)
{
sb.Append(GenerateAjaxPagerElement(item));
}
}
else
{
foreach (PagerItem item in pagerItems)
{
sb.Append(GeneratePagerElement(item));
}
}
var tb = new TagBuilder(_pagerOptions.ContainerTagName);
if (!string.IsNullOrEmpty(_pagerOptions.Id))
{
tb.GenerateId(_pagerOptions.Id);
}
if (!string.IsNullOrEmpty(_pagerOptions.CssClass))
{
tb.AddCssClass(_pagerOptions.CssClass);
}
if (!string.IsNullOrEmpty(_pagerOptions.HorizontalAlign))
{
string strAlign = "text-align:" + _pagerOptions.HorizontalAlign.ToLower();
if (_htmlAttributes == null)
{
_htmlAttributes = new RouteValueDictionary {
{ "style", strAlign }
}
}
;
else
{
if (_htmlAttributes.Keys.Contains("style"))
{
_htmlAttributes["style"] += ";" + strAlign;
}
}
}
tb.MergeAttributes(_htmlAttributes, true);
if (_ajaxPagingEnabled)
{
var attrs = _ajaxOptions.ToUnobtrusiveHtmlAttributes();
attrs.Remove("data-ajax-url");
attrs.Remove("data-ajax-mode");
if (_ajaxOptions.EnablePartialLoading)
{
attrs.Add("data-ajax-partialloading", "true");
}
if (_pageIndex > 1)
{
attrs.Add("data-ajax-currentpage", _pageIndex);
}
if (!string.IsNullOrWhiteSpace(_ajaxOptions.DataFormId))
{
attrs.Add("data-ajax-dataformid", "#" + _ajaxOptions.DataFormId);
}
AddDataAttributes(attrs);
tb.MergeAttributes(attrs, true);
}
if (_pagerOptions.ShowPageIndexBox)
{
if (!_ajaxPagingEnabled)
{
var attrs = new Dictionary <string, object>();
AddDataAttributes(attrs);
tb.MergeAttributes(attrs, true);
}
sb.Append(BuildGoToPageSection());
}
else
{
sb.Length -= _pagerOptions.PagerItemsSeperator.Length;
}
tb.InnerHtml = sb.ToString();
/* 注册客户端脚本
* string pagerScript = string.Empty;
* const string ctxItemName = "_MvcPagerScriptRegistered";
* ViewContext viewCtx = _ajaxPagingEnabled ? _ajax.ViewContext : _html.ViewContext;
* if (viewCtx.HttpContext.Items[ctxItemName] == null)
* {
* var page = viewCtx.HttpContext.CurrentHandler as Page;
* var scriptUrl = (page ?? new Page()).ClientScript.GetWebResourceUrl(typeof (PagerHelper),"Webdiyer.WebControls.Mvc.MvcPager.min.js");
* pagerScript = "<script type=\"text/javascript\" src=\"" + scriptUrl + "\"></script>";
* viewCtx.HttpContext.Items[ctxItemName] = true;
* }*/
return(MvcHtmlString.Create(CopyrightText + /*pagerScript +*/ tb.ToString(TagRenderMode.Normal) + CopyrightText));
}
