Pages/MVCPager/PagerBuilder.cs

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using System;
using System.Globalization;
using System.Web;
using System.Web.Mvc.Ajax;
using System.Web.Routing;
using System.Web.Mvc;
using System.Text;
using System.Collections.Generic;

namespace MVC
{
    internal class PagerBuilder
    {
        private readonly HtmlHelper _html;
        private readonly AjaxHelper _ajax;
        private readonly string _actionName;
        private readonly string _controllerName;
        private readonly int _totalPageCount = 1;
        private readonly int _pageIndex;
        private readonly PagerOptions _pagerOptions;
        private readonly RouteValueDictionary _routeValues;
        private readonly string _routeName;
        private readonly int _startPageIndex = 1;
        private readonly int _endPageIndex = 1;
        private readonly bool _msAjaxPaging;
        private readonly AjaxOptions _ajaxOptions;
        private IDictionary<string, object> _htmlAttributes;
        private const string CopyrightText = "\r\n<!--Conris-->\r\n";
        private const string JqueryScriptCheckItemKey = "_MvcPager_CheckjQueryScript";
        private const string ScriptPageIndexName = "*_MvcPager_PageIndex_*";
        private const string JqCheckScript = "if(typeof(jQuery)==\"undefined\"){alert(\"jQuery library not detected, please make sure it loaded prior to MvcPager!\");}";
        private const string GoToPageScript = "function _MvcPager_GoToPage(_pib,_mp){var pageIndex;if(_pib.tagName==\"SELECT\"){pageIndex=_pib.options[_pib.selectedIndex].value;}else{pageIndex=_pib.value;var r=new RegExp(\"^\\\\s*(\\\\d+)\\\\s*$\");if(!r.test(pageIndex)){alert(\"%InvalidPageIndexErrorMessage%\");return;}else if(RegExp.$1<1||RegExp.$1>_mp){alert(\"%PageIndexOutOfRangeErrorMessage%\");return;}}var _hl=document.getElementById(_pib.id+'link').childNodes[0];var _lh=_hl.href;_hl.href=_lh.replace('" + ScriptPageIndexName + "',pageIndex);%ClickHandler%;_hl.href=_lh;}";
        private const string KeyDownScript = "function _MvcPager_Keydown(e){var _kc,_pib;if(window.event){_kc=e.keyCode;_pib=e.srcElement;}else if(e.which){_kc=e.which;_pib=e.target;}var validKey=(_kc==8||_kc==46||_kc==37||_kc==39||(_kc>=48&&_kc<=57)||(_kc>=96&&_kc<=105));if(!validKey){if(_kc==13){ _MvcPager_GoToPage(_pib,%TotalPageCount%);}if(e.preventDefault){e.preventDefault();}else{event.returnValue=false;}}}";

        /// <summary>
        /// used when PagedList is null
        /// </summary>
        internal PagerBuilder(HtmlHelper html, AjaxHelper ajax, PagerOptions pagerOptions, IDictionary<string, object> htmlAttributes)
        {
            if (pagerOptions == null)
                pagerOptions = new PagerOptions();
            _html = html;
            _ajax = ajax;
            _pagerOptions = pagerOptions;
            _htmlAttributes = htmlAttributes;
        }

        internal PagerBuilder(HtmlHelper html, AjaxHelper ajax, string actionName, string controllerName,
            int totalPageCount, int pageIndex, PagerOptions pagerOptions, string routeName, RouteValueDictionary routeValues,
            AjaxOptions ajaxOptions, IDictionary<string, object> htmlAttributes)
        {
            _msAjaxPaging = (ajax != null);
            if (String.IsNullOrEmpty(actionName))
            {
                if (routeValues != null && routeValues["action"] != null)
                {
                    actionName = routeValues["action"].ToString();
                    html.ViewContext.RouteData.Values["action"] = actionName;
                }
                else