ÿþ//Created by Henry 2008/06/19

//When you want to add the control, you should new an instance in proper place

//When you want to set the original status, please call the function Reset

function ClientPager(pageSize,totalCount,containerName,showTotalCount,totalCountMessage,threadView,pageIndex)

{

    this.PagerIndex=1;

    this.PageSize=pageSize;

    this.TotalCount=totalCount; //The count of the records

    this.PageCount=1;

    this.Name=containerName;//it will help to render the pager container

    this.ResetFlag=false;

    this.ShowTotalCount=showTotalCount;

    this.TotalCountMessage=totalCountMessage;

    this.GetPage=function()

    {

        if(!isNaN(parseInt(pageIndex)))

        {

            this.PagerIndex =pageIndex

        }

        else

        {

             var args = location.search;

             var reg = new RegExp('[\?&]?PageIndex=([^&]*)[&$]?', 'gi');

             var chk = args.match(reg);

             if(!this.ResetFlag&&chk!=null)

             {

                //this.PagerIndex = RegExp.$1;

                var valArr = chk[0].split('=');

                if(valArr.length>1)

                {

                    this.PagerIndex=valArr[1];

                }

             }

         }

         this.ResetFlag=false;

    }

    

    this.FixParams=function()

    {

        if (isNaN(parseInt(this.PagerIndex))||this.PagerIndex<1) this.PagerIndex = 1;

        if (isNaN(parseInt(this.PageSize))||this.PageSize<1) this.PageSize=1;

        if (isNaN(parseInt(this.TotalCount))||this.TotalCount<0) this.TotalCount = 0;

        this.PagerIndex=parseInt(this.PagerIndex);

        this.PageSize=parseInt(this.PageSize);

        this.TotalCount=parseInt(this.TotalCount);

        this.PageCount=Math.ceil(this.TotalCount/this.PageSize);

        if(this.PageCount==0)

        {

            this.PageCount=1;

        }

        if(this.PagerIndex>this.PageCount)

           this.PagerIndex=this.PageCount;

    }  

    

    this.GoToPage = function(page){

         var turnTo = 1;

         if (typeof(page) == 'object') {

          turnTo = page.options[page.selectedIndex].value;

         } else {

          turnTo = page;

         }

         self.location.href = this.RenerUrl(turnTo);

    }

    

    this.RenerUrl=function (page) 

    { 

        if (isNaN(parseInt(page))) page = 1;

        if (page < 1) page = 1;

        if (page > this.pageCount) page = this.pageCount;

        var url = location.protocol + '//' + location.host + location.pathname;

        var args = location.search;

        var reg = new RegExp('([\?&]?)PageIndex=[^&]*[&$]?', 'gi');

        args = args.replace(reg,'$1');

        if (args == '' || args == null) 

        {

            args += '?PageIndex=' + page;

        } 

        else if (args.substr(args.length - 1,1) == '?' || args.substr(args.length - 1,1) == '&') 

        {

            args += 'PageIndex=' + page;

        } else {

            args += '&'+'PageIndex=' + page;

        }

        return url + args;

    }

    

    this.RenderHTML=function()

    {



        this.GetPage();

        this.FixParams();

        var strHTML = '', prevPage = this.PagerIndex - 1, nextPage = this.PagerIndex + 1;

        if(threadView)

        {

            strHTML=strHTML+'Page '+this.PagerIndex.toString() + ' of ' + this.PageCount.toString();

        }

        else

        {

            strHTML=strHTML+'<span class="sp_pgrangetotal">Page '+this.PagerIndex.toString() + ' of ' + this.PageCount.toString();

            strHTML=strHTML+'</span>';

        }

        if(this.ShowTotalCount)

        {

            if(threadView)

            {

                strHTML=strHTML+' (';

                if(this.TotalCountMessage)

                    strHTML=strHTML+this.TotalCount.toString()+'&nbsp;'+this.TotalCountMessage+')'

            }

            else

            {

                strHTML=strHTML+' |';

                if(this.TotalCountMessage)

                    strHTML=strHTML+'<span class="sp_pgrangetotal">&nbsp;'+this.TotalCount.toString()+'&nbsp;'+this.TotalCountMessage+'</span>';

                else

                    strHTML=strHTML+'<span class="sp_pgrangetotal">&nbsp;'+this.TotalCount.toString()+' Records'+'</span>';

            }

        }

        if(this.PageCount==1)

            return strHTML;

        if(!threadView)

        {

            strHTML=strHTML+'|';

        }

        if(this.PageCount<6)

        {

           if(this.PagerIndex==1)

           {

               strHTML=strHTML+"<span> 1 </span>";

               for(var i=2;i<=this.PageCount;i++)

               {

                    strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+i+');">'+i+'</a>';

               }

               strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+nextPage+');">Next &#62;</a>';

           }

           else if(this.PagerIndex==this.PageCount)

           {

                strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+prevPage+');">&#60; Previous</a>';

                for(var i=1;i<this.PageCount;i++)

                {

                    strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+i+');">'+i+'</a>';

                }

                strHTML=strHTML+' '+'<span>'+this.PageCount+'</span>';

           }

           else

           {

               strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+prevPage+');">&#60; Previous</a>';

               for(var i=1;i<=this.PageCount;i++)

               {

                    if(i==this.PagerIndex)

                    {

                        strHTML=strHTML+' '+'<span">'+i+'</span>';

                    }

                    else

                    {

                        strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+i+');">'+i+'</a>';

                    }

               }

               strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+nextPage+');">Next &#62;</a>';             

           }

        }

        else

        {

           if(this.PagerIndex==1)

           {

               strHTML=strHTML+"<span> 1 </span>";

               for(var i=2;i<=5;i++)

               {

                    strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+i+');">'+i+'</a>';

               }

               strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+nextPage+');">Next &#62;</a>';

               strHTML=strHTML+'...'+'<a href="javascript:'+this.Name+'.GoToPage('+this.PageCount+');">Last &#187;</a>';

           }

           else

           {

               //Add first button

               if(this.PagerIndex>3)

               {

                    strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+1+');">&#171; First</a>'+'...';

               }

               strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+prevPage+');">&#60; Previous</a>';

               

               if(this.PagerIndex==2)

               {

                    for(var i=1;i<6;i++)

                    {

                        if(i==this.PagerIndex)

                        {

                            strHTML=strHTML+' '+'<span">'+i+'</span>';

                        }

                        else

                        {

                            strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+i+');">'+i+'</a>';

                        }

                    }

                    strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+nextPage+');">Next &#62;</a>';

               }

               else if(this.PagerIndex==this.PageCount)

               {

                    for(var i=this.PageCount-4;i<=this.PageCount;i++)

                    {

                        if(i==this.PagerIndex)

                        {

                            strHTML=strHTML+' '+'<span">'+i+'</span>';

                        }

                        else

                        {

                            strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+i+');">'+i+'</a>';

                        }

                    }                   

               }               

               else if((this.PagerIndex+2)<=this.PageCount)

               {

                    for(var i=this.PagerIndex-2;i<=this.PagerIndex+2;i++)

                    {

                        if(i==this.PagerIndex)

                        {

                            strHTML=strHTML+' '+'<span">'+i+'</span>';

                        }

                        else

                        {

                            strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+i+');">'+i+'</a>';

                        }

                    }

                    strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+nextPage+');">Next &#62;</a>';

               }

               else if(this.PagerIndex==this.PageCount-1)

               {

                    for(var i=this.PagerIndex-3;i<=this.PagerIndex+1;i++)

                    {

                        if(i==this.PagerIndex)

                        {

                            strHTML=strHTML+' '+'<span">'+i+'</span>';

                        }

                        else

                        {

                            strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+i+');">'+i+'</a>';

                        }

                    }

                    strHTML=strHTML+' '+'<a href="javascript:'+this.Name+'.GoToPage('+nextPage+');">Next &#62;</a>';

               }

             

//               //Add last button

               if((this.PagerIndex+2)<=this.PageCount)

               {

                    strHTML=strHTML+'...'+'<a href="javascript:'+this.Name+'.GoToPage('+this.PageCount+');">Last &#187;</a>';

               }

           }

        }

        return strHTML;

    }

    

    this.Initialize = function()

    {



        var pagerContainer=document.getElementById('pager_'+this.Name);

        if(!pagerContainer)

        {

            document.write('<div id="pager_' + this.Name+'" class="sp_pgrange"></div>');

            pagerContainer=document.getElementById('pager_'+this.Name);

        }

            	    

        pagerContainer.innerHTML=this.RenderHTML();

    }

   

    this.Initialize();

    

    

    this.Reset=function(totalCount)

    {

        this.ResetFlag=true;

        this.PagerIndex=1;

        this.TotalCount=totalCount;

        this.Initialize();

    }

}