/* ------------------------------ */
/*        pager.class.js          */
/*     copyright.reallynet.xy     */
/* ------------------------------ */
var pager = function()
{
 this.strPagerTemplate = "";
 this.strUrl = "";
 this.container = null;
 
 /* property．setting */
 this.iPageIndex = 0;
 this.iPageSize = 0;
 this.iRecordCount = 0;
 this.iPageCount = 0;

 this.iFirstPageIndex = 0;
 this.iPrevPageIndex = 0;
 this.iNextPageIndex = 0;
 this.iLastPageIndex = 0;
 
 this.iBeginPageIndex = 0;
 this.iEndPageIndex = 0;
 
 this.strCssUrl = "/rn_client/pager/1_0/css/style.css";

 this.strTemplateMode1 = "<a href=\"$FirstPager$\" class=\"arrow\">&laquo;</a><a href=\"$PrevPager$\" class=\"arrow\">&#8249;</a>$PageLinkBlock$<a href=\"$NextPager$\" class=\"arrow\">&#8250;</a><a href=\"$LastPager$\" class=\"arrow\">&raquo;</a>&nbsp;到第&nbsp;$SelectPager$&nbsp;页&nbsp;&nbsp;";
 this.strTemplateMode2 = "<ul><li><a href=\"$FirstPager$\" class=\"tu\">&laquo;</a></li><li><a href=\"$PrevPager$\" class=\"tu\">&#8249;</a></li>$PageLinkBlock$<li><a href=\"$NextPager$\" class=\"tu\">&#8250;</a></li><li><a href=\"$LastPager$\" class=\"tu\">&raquo;</a></li><li>&nbsp;到第&nbsp;</li><li><div></div><span class=\"select\">$SelectPager$</span></li><li>&nbsp;页&nbsp;&nbsp;</li></ul>";
 
 /* interface.begin */
 /**/
 this.create = function(iMode, strId, iPageIndex, iPageSize, iRecordCount, strUrl)
 {
//  this.container = $(strId);
//  if (this.container!=null)
  {
   /*property.init*/
   var strCurUrl = document.location.href;
   if (strCurUrl.indexOf(".html")>0)
   {
    var arrUrl = strCurUrl.split('/');
    var strPage = arrUrl[arrUrl.length-1];
    var arrPage = strPage.split('-');
    
    var strUrl = arrPage[0];
    for(var i=1; i<arrPage.length-1;i++)
    {
     strUrl += "-" + arrPage[i] ;
    }
    strUrl += "-" + "$pi$.html";
   }
   else
   {
    strUrl = "?pi=$pi$" + this.getUrlParam();
   }

   this.strUrl = strUrl;
   this.id = strId;

   this.iPageIndex = iPageIndex;
   this.iRecordCount = iRecordCount;
   this.iPageSize = iPageSize;
   

   this.calculatorProperty();
   switch(iMode)
   {
    default:
    case 1:
    {
     this.strPagerTemplate = this.strTemplateMode1;
     this.createDefault()
     break;
    }
    case 2:
    {
     this.strPagerTemplate = this.strTemplateMode2;
     this.createDefault()
     break;
    }
   }
  }
 }
 
 /* the default function of create pagerbar ( param iMode is null or "" ) */
 this.createDefault = function()
 {
//  includeCss(this.strCssUrl);
  if (this.strPagerTemplate==null ||this.strPagerTemplate=="")
  {
   this.strPagerTemplate = this.strTemplateMode1;
  }
  
  var strHtml = this.strPagerTemplate;

  strHtml = strHtml.replace("$PageIndex$", this.iPageIndex);
  strHtml = strHtml.replace("$PageCount$", this.iPageCount);
  strHtml = strHtml.replace("$PageSize$", this.iPageSize);
  strHtml = strHtml.replace("$RecordCount$", this.iRecordCount);
  
  var strUrlItem;
  strUrlItem = (this.iFirstPageIndex==0) ? "#" : this.strUrl.replace("$pi$", this.iFirstPageIndex);
  strHtml = strHtml.replace("$FirstPager$", strUrlItem);
  
  strUrlItem = (this.iPrevPageIndex==0) ? "#" : this.strUrl.replace("$pi$", this.iPrevPageIndex);
  strHtml = strHtml.replace("$PrevPager$", strUrlItem);

  strUrlItem = (this.iNextPageIndex==0) ? "#" : this.strUrl.replace("$pi$", this.iNextPageIndex);
  strHtml = strHtml.replace("$NextPager$", strUrlItem);

  strUrlItem = (this.iLastPageIndex==0) ? "#" : this.strUrl.replace("$pi$", this.iLastPageIndex);
  strHtml = strHtml.replace("$LastPager$", strUrlItem);

  /* select pager block*/
//  var strSelectCode = "<select id=\"ListPager\" name=\"ListPager\" class=\"ListPager\" onChange=\"parent.location=this.options[this.selectedIndex].value\">";
  var strSelectCode = "<select id=\"ListPager\" name=\"ListPager\" class=\"ListPager\" onChange=\"location=this.options[this.selectedIndex].value\">";
  for(var i=1; i<=this.iPageCount; i++)
  {
   if(this.iPageIndex==i)
   {
    strSelectCode += "<option value=\""+this.strUrl.replace("$pi$",i)+"\" selected=\"selected\">"+i+"/"+this.iPageCount+"</option>";
   }
   else
   {
    strSelectCode += "<option value=\""+this.strUrl.replace("$pi$",i)+"\">"+i+"/"+this.iPageCount+"</option>";
   }
  }
  strSelectCode += "</select>";
  strHtml = strHtml.replace("$SelectPager$", strSelectCode);

  /* alink block*/
  var strPagerLinkCode = "";
  for (var i = this.iBeginPageIndex; i <= this.iEndPageIndex; i++)
  {
   if (i==this.iPageIndex)
   {
    // strPagerLinkCode +="<a href=\"" + strUrlItem + "\" id=\"p" + i + "\" class=\"num2\">"+i+"</a>";
    strPagerLinkCode +="<li><a href=\"javascript:void(null);\" id=\"p" + i + "\" class=\"num2\">["+i+"]</a></li>";
   }
   else
   {
    var strUrlItem = this.strUrl; 
    strUrlItem = strUrlItem.replace("$pi$", i);
    strPagerLinkCode +="<li><a href=\"" + strUrlItem + "\" id=\"p" + i + "\" class=\"num\">"+i+"</a></li>";
   }
  }
  strHtml = strHtml.replace("$PageLinkBlock$", strPagerLinkCode);
  $("#"+this.id).html(strHtml);

//  document.write(strHtml);
//   alert(strHtml);
 }
 
 this.calculatorProperty = function()
 {
  /*this.iPageCount*/
  if (this.iRecordCount % this.iPageSize==0)
  {
   this.iPageCount = (this.iRecordCount - this.iRecordCount % this.iPageSize) / this.iPageSize;
  }
  else
  {
   this.iPageCount = (this.iRecordCount - this.iRecordCount % this.iPageSize) / this.iPageSize + 1;
  }
  
  /*this.iFirstPageIndex*/
  this.iFirstPageIndex = (this.iPageCount>0) ? 1 : 0;

  /*this.iPrevPageIndex*/
  this.iPrevPageIndex = (this.iPageIndex>0) ? (this.iPageIndex - 1) : 0 ;

  /*this.iNextPageIndex*/
  this.iNextPageIndex = (this.iPageIndex+1<=this.iPageCount) ? (this.iPageIndex + 1) : 0 ;
  
  /*this.iLastPageIndex*/
  this.iLastPageIndex = (this.iPageCount>0) ? this.iPageCount : 0;
  
  /*this.iBeginPageIndex*/
  this.iBeginPageIndex = (this.iPageIndex - ((this.iPageIndex - 1) % 10));
  this.iBeginPageIndex = (this.iBeginPageIndex < 1) ? 1 : this.iBeginPageIndex;

  /*this.iEndPageIndex*/
  this.iEndPageIndex = this.iBeginPageIndex + 9;
  this.iEndPageIndex = (this.iEndPageIndex > this.iPageCount) ? this.iPageCount : this.iEndPageIndex;
 }
 
 
 this.getUrlParam = function()
 {
  var strReturn = "";
  priStrValue = "";
  if (document.location.search.indexOf("?")==0&&document.location.search.indexOf("=")>1)
  {
   priArraySource = unescape(document.location.search).substring(1,document.location.search.length).split("&");
   priGetQSi = 0;
   while (priGetQSi<priArraySource.length)
   {
    if (priArraySource[priGetQSi].indexOf("=")>0)
    {
     if (priArraySource[priGetQSi].split("=")[0].toLowerCase()!="pi")
     {
      // priStrValue = priArraySource[priGetQSi].split("=")[1];
      strReturn += "&" + priArraySource[priGetQSi].split("=")[0] + "=" + priArraySource[priGetQSi].split("=")[1];
     }
    }
    priGetQSi ++ ;
   } 
  }
  return strReturn;
 }
}