File: js/session.js

// session expiration in milisec
var sess_pollinterval = 60000;
// session valid min
var sess_expirationMinutes = 20;
// warning time min
var sess_warningMinutes = 15;

var sess_intervalID;
var sess_lastActivty;

function initSessionMonitor(){
	sess_lastActivty = new Date();
	sessSetInterval();
	$(document).bind('keypress.session',function(ed,e){sessKeyPressed(ed,e);});
}
function sessSetInterval(){
	sess_intervalID = setInterval('sessInterval()',sess_pollinterval);
}
function sessClearInterval(){
	clearInterval(sess_intervalID);
}
function sessKeyPressed(ed,e){
	sess_lastActivty = new Date();
}
function sessPingServer(){
	// call function keep alive
	//aliveAjaxFunction();
	alert("Oturum kontrolü...");
}

function sessLogOut(){
	window.location.href='logout.php';
}
function sessInterval(){
	var now = new Date();
	var diff = now-sess_lastActivty;
	var diffMins = (diff/1000/60);


if(diffMins >= sess_warningMinutes){
	//run before expiring
	//stop timer
	sessClearInterval();
	//prompt attention
	if(confirm('Oturumunuz sona erecektir'+(sess_expirationMinutes-sess_warningMinutes)+' süre sonra '(''+now.toTimeString()+ '), Tamam a basarak oturumda kalabilirsiniz'+ 'Kapata basarak oturumu sonland?rabilirsiniz. \nlf oturumunuz kapand?')){
		now = new Date();
		diff = now-sess_lastActivty;
		diffMins = (diff/1000/60);
		
		if(diffMins > sess_expirationMinutes){
			//timed out
			sessLogOut();
		}else{
			sessPingServer();
			sessSetInterval();
			sess_lastActivty = new Date();
		}
	}else{
		sessLogOut();
	}
}else{
	sessPingServer();
  }

}