/*---------------------------------------------------  
 *   PagerControl for AJAX
 *  (c) 2005 Jigar Desai <desaijm@hotmail.com>
 *  Date Change: 12/31/2005
 *  requires: prototype.js http://prototype.conio.net/
 *--------------------------------------------------*/

function PagerControl(pageSize,step){
    this.PageSize = pageSize;
    this.Step = step;
    this.PageCount = 0;
    this.CurrentPage = 1;
    this.HeaderTemplate = "[ ";
    this.ItemTemplate = "<a href=\"javascript:{#reloadfunction}({#page})\" >{#title}</a> &nbsp; ";
    this.SelectedItemTemplate = "{#title} &nbsp; ";
    this.FooterTemplate = " ]";
    this.HostControlID = null;
}

PagerControl.prototype.RenderPager = function(reloadFunction) {
    var result = "";
    if (this.PageCount > 1) {
        result += this.HeaderTemplate;
        var startPoint = Math.floor((this.CurrentPage / this.Step)) * this.Step;
        if ((this.CurrentPage % this.Step) == 0) {
            startPoint -= this.Step;
        }

        if (startPoint >= this.Step) {
            result += this.ItemTemplate.replace("{#page}", startPoint).replace("{#title}", "...").replace("{#reloadfunction}", reloadFunction);
        }

        for (var i = startPoint + 1; i <= this.PageCount && i <= (startPoint + this.Step); i++) {
            if (i != this.CurrentPage) {
                result += this.ItemTemplate.replace("{#page}", i).replace("{#title}", i).replace("{#reloadfunction}", reloadFunction);
            } else {
                result += this.SelectedItemTemplate.replace("{#title}", i);
            }
        }

        if (startPoint < (this.PageCount - this.Step)) {
            result += this.ItemTemplate.replace("{#page}", (startPoint + this.Step + 1)).replace("{#title}", "...").replace("{#reloadfunction}", reloadFunction);
        }
        result += this.FooterTemplate;
    }

    $(this.HostControlID).innerHTML = result;
}