/* =========================================================================

NAME: page-sort.js

AUTHOR: Istvan Siposs , Y-Times Publications, LLC
DATE  : 2007-2009

COMMENT: Advanced Yahoo! Store pagination and sorting.

============================================================================ */

// CONFIGURATION VARIABLES //

var SHOWALL = true;         // set to False if VIEW ALL should not be displayed.
var PAGENEXT = "next >";
var PAGEPREV = "< previous";
var SORTCONTROL = "DROPDOWN" // set it to LINK or DROPDOWN
var SORTDOWN = "";
var SORTUP = "";
var DEFAULTSORT = "";
var SHOWALLNUMBERS = true;

function PageObject(sortfields, src) {
    this.sortfields = sortfields;
    this.src = src;
}

if (queryString('page') == 'false') {
    if (GetCookie("viewall") == 'yes')
        CurrentPage = 0;
    else
        CurrentPage = 1;
}
else
    CurrentPage = queryString('page') * 1;

if (CurrentPage != 0)
    DeleteCookie("viewall");

if (CurrentPage == 0 && GetCookie('viewall') != 'yes') {
    SetCookie("viewall", "yes");
}

var sf = queryString('sf');
if (sf == 'false') {
    sf = GetCookie('sf');
    if (!sf) {
        sf = DEFAULTSORT;
    }
}
SetCookie('sf', sf);

var sd = queryString('sd');
if (sd == 'false') {
    sd = GetCookie('sd');
    if (!sd)
        sd = 'a';
}
SetCookie('sd', sd);

function PageSortFunction(a, b) {
    if (sf == 'false' || sf == '')
        return 0;
    if (typeof (a) == 'undefined' || typeof (b) == 'undefined')
        return 0;

    if (sd == 'false' || sd == '')
        sd = 'a';

    if (sd == 'a') {
        if (!isNaN(a.sortfields[sf]) && !isNaN(b.sortfields[sf]))
            return (a.sortfields[sf] - b.sortfields[sf]);
        else {
            if (a.sortfields[sf] > b.sortfields[sf])
                return 1;
            else if (a.sortfields[sf] < b.sortfields[sf])
                return -1;
            else
                return 0;
        }
    }
    else {
        if (!isNaN(a.sortfields[sf]) && !isNaN(b.sortfields[sf]))
            return (b.sortfields[sf] - a.sortfields[sf]);
        else {
            if (a.sortfields[sf] < b.sortfields[sf])
                return 1;
            else if (a.sortfields[sf] > b.sortfields[sf])
                return -1;
            else
                return 0;
        }
    }
}

function ShowPageControls() {
    var numpages = Math.ceil(PageObjects.length / pagesize);
    if (CurrentPage > numpages)
        CurrentPage = 1;

    //    var sf = queryString('sf');
    //    if (sf == 'false')
    //        sf = '';
    //    var sd = queryString('sd');
    //    if (sd == 'false')
    //        sd = '';

    document.write("<a name=sortblock></a><div class=paginate>");

    document.write("<table border=0 cellpadding=2 cellspacing=0 width=100% id=sortControl><tr>");

    // stats
    if (CurrentPage > 0) {
        var ItemsFrom = (CurrentPage - 1) * pagesize + 1;
        var ItemsTo = ItemsFrom + pagesize - 1;
        if (ItemsTo > PageObjects.length)
            ItemsTo = PageObjects.length;

        document.write("<td class=pageLeft>displaying : <b>" + ItemsFrom + " - " + ItemsTo + "</b> (of " + PageObjects.length + " items)</td>");
    }
    else
        document.write("<td class=pageLeft>displaying all " + PageObjects.length + " items.</td>");

    document.write("<td align=right class=pageNums>");
    if (numpages > 1)
        document.write("page:  ");
    if (CurrentPage > 1)
        document.write("<a href=" + PageID + ".html?page=" + (CurrentPage - 1) + "&sf=" + sf + "&sd=" + sd + "#pageFilters>" + PAGEPREV + "</a>  ");

    for (var i = 1; i <= numpages && numpages > 1; i++) {
        var pad;
        if (CurrentPage == 1 || CurrentPage == numpages)
            pad = 2;
        else
            pad = 1;
        if (
             (i >= CurrentPage - pad && i <= CurrentPage + pad) || i == 1 || i == numpages || SHOWALLNUMBERS) 
        {
            if (CurrentPage != i)
                document.write("<a href=" + PageID + ".html?page=" + i + "&sf=" + sf + "&sd=" + sd + "#pageFilters>" + i + "</a>");
            else
                document.write("<b>" + i + "</b>");
            document.write(" ");
        }
        else {
            if (i == 2 || i == numpages - 1) {
                document.write("... ")
            }
        }
    }
    if (CurrentPage < numpages && CurrentPage > 0)
        document.write("<a href=" + PageID + ".html?page=" + (CurrentPage + 1) + "&sf=" + sf + "&sd=" + sd + "#pageFilters>" + PAGENEXT + "</a>");

    if (SHOWALL && numpages > 1) {
        document.write("  <a href=" + PageID + ".html?page=0&sf=" + sf + "&sd=" + sd + "#pageFilters>");
        if (CurrentPage == 0)
            document.write("<b>");
        document.write("<img src=/lib/yhst-95832770774638/pageseeall.gif border=0 align=absmiddle>");
        if (CurrentPage == 0)
            document.write("</b>");
        document.write("</a> ");
    }
    document.write("</td></tr>")
    document.write("</table>");
    document.write("</div>");
}

function ShowPage() {
    if (typeof (FilterPage) != 'undefined')
        FilterPage();

    var numpages = Math.ceil(PageObjects.length / pagesize);
    if (CurrentPage > numpages)
        CurrentPage = 1;

    if (numpages == 0) {
        document.write("<center><br><br><br>There are no items to match your criteria. Please try a different search.<br><br><br></center>");
        return;
    }
    
    var colcnt = 0;

    if (CurrentPage == 0) {
        var idx0 = 0;
        var idx1 = PageObjects.length - 1;
    }
    else {
        var idx0 = (CurrentPage - 1) * pagesize;
        var idx1 = idx0 + pagesize - 1;
        if (idx1 >= PageObjects.length)
            idx1 = PageObjects.length - 1;
    }

    if (sf != 'false' && sf != '')
        PageObjects.sort(PageSortFunction);

    var idx = idx0;
    document.write("<div style='margin-top: 5px'>");
    ShowPageControls();
    document.write("</div>");
    document.write("<table border=0 width=" + wid + " cellpaddign=0 cellspacing=0 class=pagingTable>");
    document.write("<tr valign=top>");
    while (idx <= idx1) {
        if (colcnt == cols) {
            document.write("</tr><tr valign=top>");
            colcnt = 0;
        }
        document.write("<td class=pagingcell>" + PageObjects[idx].src.replace(/&#96;/gi, "'") + "</td>");
        colcnt++;
        idx++;
    }
    document.write("</tr></table>");
    document.write("<div style='margin-bottom: 5px'>");
    ShowPageControls();
    document.write("</div>");
}


function PageQuery(q) {
    if (q.length > 1) this.q = q.substring(1, q.length);
    else this.q = null;
    this.keyValuePairs = new Array();
    if (q) {
        for (var i = 0; i < this.q.split("&").length; i++) {
            this.keyValuePairs[i] = this.q.split("&")[i];
        }
    }
    this.getKeyValuePairs = function () { return this.keyValuePairs; }
    this.getValue = function (s) {
        for (var j = 0; j < this.keyValuePairs.length; j++) {
            if (this.keyValuePairs[j].split("=")[0] == s)
                return this.keyValuePairs[j].split("=")[1];
        }
        return false;
    }
    this.getParameters = function () {
        var a = new Array(this.getLength());
        for (var j = 0; j < this.keyValuePairs.length; j++) {
            a[j] = this.keyValuePairs[j].split("=")[0];
        }
        return a;
    }
    this.getLength = function () { return this.keyValuePairs.length; }
}
function queryString(key) {
    var page = new PageQuery(window.location.search);
    return unescape(page.getValue(key));
}

// name - name of the cookie
// value - value of the cookie
// [expires] - expiration date of the cookie (defaults to end of current session)
// [path] - path for which the cookie is valid (defaults to path of calling document)
// [domain] - domain for which the cookie is valid (defaults to domain of calling document)
// [secure] - Boolean value indicating if the cookie transmission requires a secure transmission
// * an argument defaults when it is assigned null as a placeholder
// * a null placeholder is not required for trailing omitted arguments
function SetCookie(name, value, expires, path, domain, secure) {
    var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
    document.cookie = curCookie;
}

// name - name of the desired cookie
// * return string containing value of specified cookie or null if cookie does not exist
function GetCookie(name) {
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    } else
        begin += 2;
    var end = document.cookie.indexOf(";", begin);
    if (end == -1)
        end = dc.length;
    return unescape(dc.substring(begin + prefix.length, end));
}

// name - name of the cookie
// [path] - path of the cookie (must be same as path used to create cookie)
// [domain] - domain of the cookie (must be same as domain used to create cookie)
// * path and domain default if assigned null or omitted if no explicit argument proceeds
function DeleteCookie(name, path, domain) {
    if (GetCookie(name)) {
        document.cookie = name + "=" +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}

// date - any instance of the Date object
// * hand all instances of the Date object to this function for "repairs"
function fixdate(date) {
    var base = new Date(0);
    var skew = base.getTime();
    if (skew > 0)
        date.setTime(date.getTime() - skew);
}