/* 	=======================
	| login status handler |
	======================= */
/* object definition */
function loginObj()
{
	this.control = 0;
	this.status = 0;
	this.setControl = function() {
		this.control = 1;
	}
	this.clearControl = function() {
		this.control = 0;
	}
	this.setStatus = function() {
		this.status = 1;
	}
	this.clearStatus = function() {
		this.status = 0;
	}
}
function bitSet() {
	this.topObj = new loginObj();
	this.appObj = new loginObj();
}
/* default login and logout function */
function login_top() {
}

function logout_top() {
}

function login_app() {
}

function logout_app() {
}

/* == start of handler == */
/* global variables */
var hkec_topbar_lockFlag = 0;
var hkec_topbar_isInit = 0;

function hkec_topbar_addInit()
{
	hkec_topbar_isInit ++;
}

function hkec_topbar_setCookie(cname, bitsetObj)
{
	cvalue = bitsetObj.topObj.control + '';
	cvalue += bitsetObj.topObj.status + '';
	cvalue += bitsetObj.appObj.status + '';
	cvalue += bitsetObj.appObj.control + '';
	//alert("setCookie: " + cvalue);
	//document.cookie = cname + "=" + cvalue;
	hkec_topbar_set_cookie( cname, cvalue, 0, '/', '.hkedcity.net', 0 );
}
function hkec_topbar_set_cookie( name, value, expires, path, domain, secure )
{
	domain = document.domain;
	// set time, it's in milliseconds
	var today = new Date();
	today.setTime( today.getTime() );

	/*
	if the expires variable is set, make the correct
	expires time, the current script below will set
	it for x number of days, to make it for hours,
	delete * 24, for minutes, delete * 60 * 24
	*/
	if ( expires )
	{
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + expires );

	document.cookie = name + "=" + escape( value ) +
	( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
	( ( path ) ? ";path=" + path : "" ) +
	( ( domain ) ? ";domain=" + domain : "" ) +
	( ( secure ) ? ";secure" : "" );
	//alert("set_cookie: " + document.cookie);
}
function hkec_topbar_getCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return "0000";
}

/* handler variable */
var currentBit = new bitSet();

function hkec_topbar_setTopObj(obj)
{
	currentBit.topObj = obj;
}

function hkec_topbar_setAppObj(obj)
{
	currentBit.appObj = obj;
}

function hkec_topbar_getTopObj()
{
	return currentBit.topObj;
}

function hkec_topbar_getAppObj()
{
	return currentBit.appObj;
}

/* handler function */
function hkec_topbar_setIFrameURL()
{
	appendStr = "#logFlag##" + hkec_topbar_lockFlag + "#isInit##" + hkec_topbar_isInit +"#bitset##";
	cvalue = currentBit.topObj.control + '';
	cvalue += currentBit.topObj.status + '';
	cvalue += currentBit.appObj.status + '';
	cvalue += currentBit.appObj.control + '';
	appendStr += cvalue;

	currentIframeSrc = document.getElementById('myLoginBar').src;
	if (navigator.appName == "Netscape") {
		window.myLoginBar.location.href = currentIframeSrc + escape(appendStr);	
	}else{
		document.frames['myLoginBar'].location.href=currentIframeSrc+escape(appendStr);
	}
}

function hkec_topbar_handle()
{
	if(hkec_topbar_isInit==2) { // if both App and Topbay init

		hkec_topbar_lockFlag = 1; // lock
		hkec_topbar_setIFrameURL();
		bitSetString = hkec_topbar_getCookie("loginCookie");
		
		cookieBit = new bitSet();
		cookieBit.topObj.control = parseInt(bitSetString.charAt(0));
		cookieBit.topObj.status = parseInt(bitSetString.charAt(1));
		cookieBit.appObj.status = parseInt(bitSetString.charAt(2));
		cookieBit.appObj.control = parseInt(bitSetString.charAt(3));
		
		// looping to get equil.
		if(cookieBit.topObj.status != currentBit.topObj.status) {
			cookieBit.topObj.status = currentBit.topObj.status;
			currentBit.topObj.control = 1;
		}else if(cookieBit.appObj.status != currentBit.appObj.status) {
			cookieBit.appObj.status = currentBit.appObj.status;
			currentBit.appObj.control = 1;
		}
		hkec_topbar_setCookie("loginCookie", cookieBit);
		hkec_topbar_lockFlag = 0; // unlock
		hkec_topbar_setIFrameURL();
	}
}

function hkec_topbar_getLoginStatus()
{
	if (!hkec_topbar_lockFlag && hkec_topbar_isInit==2) { // if both App and Topbar init AND unlock
		/* debug msg */
		strBit = currentBit.topObj.control + '';
		strBit += currentBit.topObj.status+ '';
		strBit += currentBit.appObj.status+ '';
		strBit += currentBit.appObj.control+ '';
		var date = new Date();
		//document.getElementById('divTime').innerText = strBit + " " + date.toTimeString();
		/* end of debug msg */
		return currentBit;
	}
	return null;
}
/* end of login status handler */

/* 	=======================
	|  display top bar fn  |
	======================= */
function hkec_topbar_display(param_obj)
{
	hkec_topbar_init();
	var topbar_str = '';
	topbar_str += "<iframe id=\"myLoginBar\" name=\"myLoginBar\" src=\"http://www.hkedcity.net/tools/topbar";
	topbar_str += "?login=" + param_obj.login;
	topbar_str += "&parent_url=" + escape(self.location.href);
	topbar_str += "&locale=" + param_obj.locale;
	if (param_obj.lang != "") {
		topbar_str += "&lang=" + param_obj.lang;
	}
	topbar_str += "\" width=\"100%\" height=\"61\" scrolling=\"no\" frameborder=\"0\"></iframe>";
	document.write(topbar_str);

	return;
}

function hkec_topbar_get_url()
{
	var curr_url = new String(self.location.href);
	curr_url = curr_url.replace(/casticket=[^&]&?/, '');
	curr_url = curr_url.replace(/[&\?]$/, '');
	return curr_url;
}

function hkec_topbar_create_param_obj()
{
	var param_obj = new Object();
	param_obj.login = 0;
	param_obj.lang = '';
	param_obj.locale = 'utf-8';
	return param_obj;
}

var hkec_topbar_param_obj = hkec_topbar_create_param_obj();

/* end of display topbar */

/* 	=======================
	|  top bar section     |
	======================= */
topObj = new loginObj();
function hkec_topbar_init(){
		topObj.clearStatus();
		hkec_topbar_setTopObj(topObj);
	hkec_topbar_addInit();
	hkec_topbar_handle();
	
	selfCheck_t();
}


// regular check for topbar
function selfCheck_t()
{
	//cBit = parseToBitSet(parseURL());
	cBit = self.hkec_topbar_getLoginStatus();
	if(cBit!= null && cBit.appObj.control) {
		if(cBit.topObj.status != cBit.appObj.status) {
			if(cBit.appObj.status){
				cBit.topObj.setStatus();
				hkec_topbar_setCookie("loginCookie", cBit);
				login_top();
			}else{
				cBit.topObj.clearStatus();
				hkec_topbar_setCookie("loginCookie", cBit);
				logout_top();
			}
		}
		else{
			cBit.appObj.clearControl();
			hkec_topbar_setCookie("loginCookie", cBit);
		}
	}
	setTimeout("selfCheck_t()", 1000);
}
selfCheck_t();

function login_top()
{
	// customise here
	var curr_url = hkec_topbar_get_url();
	var new_url = "http://www.hkedcity.net/tools/topbar/caslogin.php?url=" + escape(curr_url);
	this.location.href = new_url;
	return;
	//document.getElementById('divBit').innerText +="\ntopbar login";
}

function logout_top()
{
	// customise here
	var curr_url = hkec_topbar_get_url();
	var new_url = "http://www.hkedcity.net/tools/topbar/caslogout.php?url=" + escape(curr_url);
	this.location.href = new_url;
	return;
	//document.getElementById('divBit').innerText +="\ntopbar logout";
}

/* 	=======================
	| application section  |
	======================= */
// regular check for application
function selfCheck()
{
	cBit = self.hkec_topbar_getLoginStatus();
	if(cBit!= null && cBit.topObj.control) {
		if(cBit.topObj.status != cBit.appObj.status) {
			if(cBit.topObj.status){
				cBit.appObj.setStatus();
				hkec_topbar_setCookie("loginCookie", cBit);
				login_app();
			}else{
				cBit.appObj.clearStatus();
				hkec_topbar_setCookie("loginCookie", cBit);
				logout_app();
			}
		}
		else{
			cBit.topObj.clearControl();
			hkec_topbar_setCookie("loginCookie", cBit);
		}
	}
	else if (cBit!=null) {
		if(cBit.topObj.control==cBit.appObj.control
			&& cBit.topObj.status != cBit.appObj.status) {
				if(cBit.topObj.status){
					cBit.appObj.setStatus();
					hkec_topbar_setCookie("loginCookie", cBit);
					login_app();
				}else{
					cBit.appObj.clearStatus();
					hkec_topbar_setCookie("loginCookie", cBit);
					logout_app();
				}
			}
	}
	setTimeout("selfCheck()", 1000);
}
appObj = new loginObj();