stats.js

/*
Scripts used to change or enable/disable the refresh intraval to load server data

last updated : Sunday August 22,2010 12:53 PM
*/

var _loadedStylesheet;
var _refreshEnabled = true;
var _refreshInterval = 2000;
var _customInterval = _refreshInterval;
var _loading = false;
var _lastSelectedDisable = false;
var _timeoutId = -1;
var _lastBeforeDisable = 2000;
var _disableRefreshClicked = false;

/* inital document load */
$(document).ready(function() {
    //default values
    $("#customIntervalText").val(_customInterval);

    /* inital value is 'Disable' to make sure click works */
    $('#disableRefresh').html("Disable");

    /* first load */
    loadData();

    /*
        Event handling - rest of function
    */
    $("#title a").click(function () {

        loadData();
    });

    /* resets the select to inital values */
    $('#resetRefresh').click(function() {
        _lastBeforeDisable = 2000;
        $('#disableRefresh').html("Enable");
        $('#disableRefresh').click();
    });

    /* Quick link to disable/enable refresh */
    $('#disableRefresh').click(function() {
        _disableRefreshClicked = true;

        if($(this).html() == "Disable"){
            _lastBeforeDisable = $("#refreshIntervalSelect").find("option[selected]").attr("value");

            $("#refreshIntervalSelect").find("option[value='0']").attr("selected","selected");
            $("#refreshIntervalSelect").change();
            $(this).html("Enable");

            $("#refreshIntervalSelect").attr("disabled","disabled");
        }else{
            $("#refreshIntervalSelect").find("option[value='"+ _lastBeforeDisable +"']").attr("selected","selected");
            $("#refreshIntervalSelect").change();
            $(this).html("Disable");

            $("#refreshIntervalSelect").attr("disabled","");
        }

    });
    $("#refreshIntervalSelect").change(function () {

        var selected = $(this).find("option[selected]").first();
        var interval = selected.attr("value");

        if (interval == -1) { //custom
            $("#refreshIntervalCustom").removeClass("hidded");
            $("#refreshIntervalCustom").addClass("visible");
            _refreshInterval = 1000;

            var customVal = $("#customIntervalText").val();
            customVal = customVal * 1;
            if (customVal > 0) {
                _refreshInterval = customVal;
                _refreshEnabled = true;
                $("#customIntervalText").select();
            }
            loadData();
        }
        else {
            $("#refreshIntervalCustom").removeClass("visible");
            $("#refreshIntervalCustom").addClass("hidded");

            if (interval == 0) { //disabled
                _refreshInterval = 0;
                _refreshEnabled = false;
                _lastSelectedDisable = true;
                $("#status").html("<i>Refresh Disabled</i>");
                $("#timeoutcrums").html("");


            }
            else {
                _refreshInterval = interval;
                _refreshEnabled = true;
                _lastSelectedDisable = false;
                loadData();

            }
        }
    });
    $("#customIntervalText").blur(function () {
        var selected = $("#refreshIntervalSelect option[selected]").first();
        var interval = selected.attr("value");

        var customVal = $(this).val();

        customVal = customVal * 1;
        if (customVal > 0) {
            _refreshInterval = customVal;
            _refreshEnabled = true;
            loadData();
        }
    });
}); //document ready

function loadData() {

    if (_lastSelectedDisable == true) {
        _lastSelectedDisable = false;
        return;
    }
    if (_loading == true)
        return;
    _loading = true;
    try {
        var refreshms = _refreshInterval;
        var txhtml = null;
        var xmlurl = "Azureus_Stats.xml";
        var xslurl = "azureus.xsl";
        // code for IE
        if (window.ActiveXObject) {
            try {
                var source = null; //xml source
                var attempts = 0;
                var maxattempts = 3;

                while (attempts <= maxattempts) {
                    try {
                        source = new ActiveXObject("Msxml2.DOMDocument.3.0");
                        source.async = false;
                        source.load(xmlurl);
                        break;
                    }
                    catch (e) {
                        attempts++;
                        if (attempts >= maxattempts) {
                            displayError(e);
                            break;
                        }
                        source = null;
                    }
                } //while

                if (_loadedStylesheet == null) {
                    _loadedStylesheet = new ActiveXObject("Msxml2.DOMDocument.3.0");
                    _loadedStylesheet.async = false
                    _loadedStylesheet.load(xslurl);
                }

                txhtml = source.transformNode(_loadedStylesheet)

            } catch (e) {
                _loadedStylesheet = null;
                displayError(e);
            }
        }
        // code for Mozilla, Firefox, Opera, etc.
        else if (document.implementation && document.implementation.createDocument) {
            try {
                var source = $.ajax({
                    url: xmlurl,
                    cache: false,
                    async: false
                }).responseText;
                var stylesheet = $.ajax({
                    url: xslurl,
                    cache: false,
                    async: false
                }).responseText;
                var xsltProcessor = new XSLTProcessor();
                xsltProcessor.importStylesheet(stylesheet);
                txhtml = xsltProcessor.transformToFragment(source, document);
            } catch (e) { displayError(e.message); }
        }
        //load html into page
        $('#result').html(txhtml);
        var showdebug = false;
        //update status
        if(showdebug==true)
            $("body").append("<textarea style='height:300px;width:100%;' rows='2' cols='2'>" + txhtml + "</textarea>");
        $("#status").html("" + getTime() + " Interval: " + (refreshms / 1000) + " seconds");

        //set timeout crums
        var count = $("#timeoutcrums").attr("count");
        if (!count)
            count = 0;
        if (count > 4) {
            $("#timeoutcrums").html("");
            count = 0;
        }
        count++;

        $("#timeoutcrums").append(".");
        $("#timeoutcrums").attr("count", count);

        //reset timeout
        if (_refreshEnabled == true) {
            //set timer
            if (1000 >= refreshms)
                refreshms = 1200;
            if(_timeoutId != -1)
                clearTimeout(_timeoutId);
            _timeoutId = window.setTimeout("loadData()", refreshms);
        }
    }
    catch (e) { displayError(e.message); }
    finally {
        updateGlobals();
        _loading = false;
    }
}
function updateGlobals() {
    //TODO:
    return;
    var dlspeed =  _globals.values[0].dlspeed;
    var ulspeed = _globals.values[0].ulspeed;
    var total_peers = _globals.values[0].total_peers;

    $("#previous_results").html("dlspeed = " + dlspeed);
}
function getTime() {
    var today = new Date();
    var h = today.getHours();
    var m = today.getMinutes();
    var s = today.getSeconds();
    var ampm = "AM";
    if (h > 12) {
        h = h - 12;
        ampm = "PM";
    }
    m = checkTime(m);
    s = checkTime(s);
    return h + ":" + m + ":" + s + " " + ampm;
}
function checkTime(i) {
    if (i < 10) {
        i = "0" + i;
    }
    return i;
}
function displayError(e) {
    var message = e ? e.toString() : " unknown error";
    $("#errorOutput").append("<div>" + message + "</div>");
}