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// $Id$
var it_boot_status = "boot";
var it_panictimer = window.setTimeout("it_panic(it_boot_status)", 31337), it_domtimer;
var it_catcherrstart = new Date().getTime();
function it_catcherr(msg, url, line)
{
var stacktrace = "";
for (var c = it_catcherr.caller; c != null; c = c.caller)
{
var funcname = c.toString().match(/function (\w*)/)[1];
stacktrace += (funcname ? funcname : "anon") + "/";
if (c.caller == c) // Break simple recursion
{
stacktrace += "*";
break;
}
}
if (typeof it_boot.sequence != 'undefined')
stacktrace += "it_boot=" + it_boot.sequence + ";";
if (typeof window.it_loader != 'undefined' && it_loader.sequence)
stacktrace += "it_loader=" + it_loader.sequence + ";";
it_boot_report(msg, url, line, stacktrace);
return !window.env || !!window.env.is_live_server; // No env or live server -> suppress error
}
window.onerror = it_catcherr;
function it_boot_addparam(url, param)
{
return url + (url.match(/\?/) ? "&" : "?") + param;
}
function it_panic(reason, msg)
{
if (!document.location.href.match(/[?&]static=/)) // Avoid loop
window.setTimeout("document.location.href = it_boot_addparam(document.location.href, 'static=" + reason + "')", 500);
return it_boot_report('panic ' + reason, '-', -1, (msg ? msg : ''));
}
function it_boot_report(msg, file, line, more)
{
window.clearTimeout(window.it_domtimer);
window.clearTimeout(window.it_panictimer);
new Image().src = "/itjs/error.gif/" + escape(msg) + "|" + escape(file) + "|" + line + "|" + (new Date().getTime() - it_catcherrstart) + "|" + escape(more);
}
function it_boot_checkcss(style, key, value)
{
return navigator.userAgent.match(/konqueror/i) || (style && style.getPropertyValue && (style.getPropertyValue(key) == value));
}
function it_boot_init()
{
window.it_domtimer = null;
var konqueror = navigator.userAgent.match(/konqueror/i);
var doc = document;
var dom = doc && (dom = doc.getElementById('it_boot_dom')); // HTML has been rendered
var view = dom && doc.defaultView; // We can check if stylesheet is active
var style = view && view.getComputedStyle && view.getComputedStyle(dom, '');
var css = window.it_boot_checkcss(style, "visibility", "hidden"); // CSS active (inline style on tag)
var stylesheet = window.it_boot_checkcss(style, "display", "none"); // External stylesheet loaded
if (!(doc || !(it_boot_status = "doc")) || !(dom || !(it_boot_status = "dom")) || (style && !(stylesheet || !(it_boot_status = "stylesheet"))))
{
window.it_domtimer = window.setTimeout("it_boot_init()" , 42);
if (style && !css)
it_panic("css");
return;
}
it_boot.sequence += "i";
window.clearTimeout(window.it_panictimer);
window.it_boot_start();
it_boot.sequence = "";
}
function it_boot(file, isretry)
{
it_boot.file = file;
it_boot.sequence = isretry ? "r" : "b";
try
{
var loader = new XMLHttpRequest();
}
catch (e)
{
var classnames = [ 'MSXML2.XMLHTTP', 'Microsoft.XMLHTTP' ];
for (var i in classnames)
try { loader = new ActiveXObject(classnames[i]); break; } catch (e) {}
}
if (loader)
{
it_boot.sequence += "l";
loader.open("GET", it_boot_addparam(file, "boot=1" + (isretry ? "&retry=1" : "")));
loader.onreadystatechange = function()
{
var error = "";
if (loader.readyState == 4)
{
if (loader.status < 400) // Opera gives back 304 if from cache
{
// check length cookie
var ln = String(loader.responseText).substr(-16).match(/\*sln:\s*([0-9]+)\*/);
if (ln && ln[1]-0 == loader.responseText.length)
{
it_boot.sequence += "e";
var code = "try {" + loader.responseText + "} catch (e) { it_catcherr(e.message, it_boot.file, -1); }"; // Wrapped in try/catch as Konqueror does not support window.onerror
if (window.execScript)
window.execScript(code, "javascript"); // IE work-around to get script executed in global scope
else
window.setTimeout(code, 0); // Standard compliant version
}
else
error = (ln ? "length mismatch: "+ln[1]+" != "+loader.responseText.length : "no length cookie");
}
else
error = loader.statusText;
if (error)
{
if (isretry)
it_panic('load', error);
else
it_boot(file, true);
}
}
}
loader.send(null);
}
else
{
var doc = document;
var dom = doc && (dom = doc.getElementById('it_boot_dom')); // HTML has been rendered
it_boot.sequence += "n";
if (window.opera || (document.all && navigator.platform.indexOf("Mac") >= 0))
document.write('<sc'+'ript type="text/javascript" src="'+it_boot_addparam(file, 'boot=1')+'"><\/sc'+'ript>');
else if (dom)
{
var tag = doc.createElement("script");
tag.src = it_boot_addparam(file, 'boot=1&retry=1');
dom.appendChild(tag);
}
else
window.it_domtimer = window.setTimeout("it_boot('" + file + "')" , 42);
}
}
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