// JScript File
function ctlPageTool_init(ctlID)
{
    var gridID          = document.getElementById(ctlID+"_txtGridID").value;
    if(gridID=="") gridID="mmmm111";
    var grd             = document.getElementById(gridID);
    var txtCurrentPage  = document.getElementById(ctlID+"_txtCurrentPage");
    var txtMaxPageNumber= document.getElementById(ctlID+"_txtMaxPageNumber");
    var txtMaxRecordNumber = document.getElementById(ctlID+"_txtMaxRecordNumber");
    var MaxRecordNumber = txtMaxRecordNumber.value;
    var MaxPageNumber   = txtMaxPageNumber.value;
    var RecordsPerPage  = document.getElementById(ctlID+"_txtRecordsPerPage").value;    
    var refresh       = document.getElementById(ctlID+"_txtRefresh").value;

    if(refresh==0) return null;    
    if(grd)
    {
        if(grd.rows)
        {
            MaxRecordNumber = grd.rows.length;
        }
        else
        {
            var i=0;
            while(document.getElementById(gridID+"_"+i)) i++;
            MaxRecordNumber = i;
        }
        if(RecordsPerPage>0)
        {
            MaxPageNumber = Math.ceil(MaxRecordNumber/RecordsPerPage);
            txtCurrentPage.value=1;
            txtMaxRecordNumber.value = MaxRecordNumber;
            txtMaxPageNumber.value = MaxPageNumber;
        }
        else
        {
            txtCurrentPage.value=0;
        }
    }
}

function ctlPageTool_load(ctlID)
{
    try
    {
        ctlPageTool_init(ctlID);
        ctlPageTool_create(ctlID);
        ctlPageTool_showGridAndTable(ctlID);
    }
    catch(e)
    {
    }    
}

function ctlPageTool_create(ctlID)
{   
    var ctl = document.getElementById(ctlID);
    var PagesDisplay  = parseInt(document.getElementById(ctlID+"_txtPagesDisplay").value);    
    var MaxPageNumber = parseInt(document.getElementById(ctlID+"_txtMaxPageNumber").value);
    var CurrentPage   = parseInt(document.getElementById(ctlID+"_txtCurrentPage").value);
    var StylePageTool = parseInt(document.getElementById(ctlID+"_txtStylePageTool").value);
    var i;
    var p1 = (CurrentPage - Math.round((PagesDisplay-1)/2)>0)?(CurrentPage-Math.round((PagesDisplay-1)/2)):(1);
    var p2;
    
    if(MaxPageNumber<=1)
    {
        return null;
    }
    if(p1+PagesDisplay-1<MaxPageNumber)
    {
        p2=p1+PagesDisplay-1;
    }
    else
    {
        p2 = MaxPageNumber;
        p1 = (MaxPageNumber - PagesDisplay + 1>0)?(MaxPageNumber - PagesDisplay + 1):(1);
    }
    var strTG="<table class=\"PagerItem\" border=\"0\"><tbody><tr>";    
    if(p1>1)
    {
        switch(StylePageTool)
        {
            case 1:                
            case 2:
            default:
                strTG += "<td class=\"PagerItem\"><a href=\"javascript:ctlPageTool_selected('" + ctlID + "',-1);\">Trước</a></td>";
                //strTG += "<td class=\"PagerItem\" onclick=\"ctlPageTool_selected('" + ctlID + "',-1)\">Trước</td>";
                break;
        }
    }
    if(p1<=p2)
    {
        strTG += "<td class=\"PagerItem\">Trang</td>";
    }
    for(i=p1;i<=p2;i++)
    {
        if(i==CurrentPage)
            strTG += "<td class=\"PagerSelectedItem\">" + i + "</td>";
        else
            strTG += "<td class=\"PagerItem\"><a href=\"javascript:ctlPageTool_selected('" + ctlID + "',"+ i +");\">" + i + "</a></td>";
    }
    if(p2<MaxPageNumber)
    {
        switch(StylePageTool)
        {
            case 1:
            case 2:
            default:
                strTG += "<td class=\"PagerItem\"><a href=\"javascript:ctlPageTool_selected('" + ctlID + "',-3);\">Sau</a></td>";
                break;
        }
    }
    //ctl.className = "pagetool"+StylePageTool;
    strTG+="</td></tbody></table>"
    ctl.innerHTML = strTG;
}

function ctlPageTool_selected(ctlID,PageNumber)
{
    var txtCurrentPage   = document.getElementById(ctlID+"_txtCurrentPage");
    var PagesDisplay  = parseInt(document.getElementById(ctlID+"_txtPagesDisplay").value);
    var CurrentPage   = parseInt(document.getElementById(ctlID+"_txtCurrentPage").value);
    var MaxPageNumber = parseInt(document.getElementById(ctlID+"_txtMaxPageNumber").value);    
    var RunAtServer = parseInt(document.getElementById(ctlID+"_txtRunAtServer").value);
    var gt=CurrentPage;
    
    switch(PageNumber)
    {
        case -1://Prev
            if(CurrentPage>1) gt = CurrentPage - 1;
            break;
        case -2://First
            gt = 1;
            break;
        case -3://Next
            if(CurrentPage<MaxPageNumber) gt = CurrentPage + 1;
            break;
        case -4://Last
            gt = MaxPageNumber;
            break;
        default:
            gt = PageNumber;
            break;
    }
    if(CurrentPage==gt) return false;    
    //Chọn nút mới
    txtCurrentPage.value = gt;            
    PageNumber=gt;
    if(RunAtServer)
    {
        var url=document.getElementById(ctlID+"_txtURL").value;
        if(url=="")
        {
            var btnPageSelected = document.getElementById(ctlID+"_btnPageSelected");
            btnPageSelected.click();
        }
        else
        {
            url = url.replace("#1#",PageNumber);
            document.location = url;
        }
    }
    else
    {
        ctlPageTool_showGridAndTable(ctlID);
        ctlPageTool_create(ctlID);
    }
    return false;
}

function ctlPageTool_showGridAndTable(ctlID)
{
    var RunAtServer     = parseInt(document.getElementById(ctlID+"_txtRunAtServer").value);
    var RecordsPerPage  = parseInt(document.getElementById(ctlID+"_txtRecordsPerPage").value);
    var CurrentPage     = parseInt(document.getElementById(ctlID+"_txtCurrentPage").value);
    var MaxRecordNumber = parseInt(document.getElementById(ctlID+"_txtMaxRecordNumber").value);    
    var gridID          = document.getElementById(ctlID+"_txtGridID").value;
    if(gridID=="")gridID= "mmmm111";
    var grd             = document.getElementById(gridID);
    var i,n,cs1,cs2;
           
    if(grd)
    {
        if(RunAtServer==1)
        {
            n   = RecordsPerPage;
            cs1 = 0;
            cs2 = n-1;        
        }
        else
        {
            n   = MaxRecordNumber;
            cs1 = (CurrentPage-1)*RecordsPerPage;
            cs2 = CurrentPage*RecordsPerPage-1;        
        }
               
        var item;
        for(i=0;i<=n-1;i++)
        {
            if(grd.rows)
            {
                if (i<=grd.rows.length-1)
                {
                    item = grd.rows[i];
                }
                else
                {
                    item = null;
                }
            }    
            else
            {
                item = document.getElementById(gridID+"_"+i);
            }
            if(item)
            {
                if(cs1<=i && i<=cs2)
                {
                    item.style.display='';
                }
                else
                {
                    if(item.style.display!='none')
                    {
                        item.style.display='none';
                    }                
                }
            }
        } 
        if(cs1<=n)
        {
            try
            {
                var funcName=document.getElementById(ctlID+"_txtOnChange").value;
                window[funcName](gridID, cs1);
            }
            catch(err)
            {
            }
        }
    }
}