Flex SystemManger monitors whether users are dealing with programs

For example:
Var sysMan: SystemManager = Application. application. systemManager;
SysMan. removeEventListener (FlexEvent. IDLE, timeoutHandler );
// Timeout after twenty seconds
Public var timeout: Number = 20000;
Private var timeoutTotal: Number = 0;
Private var timeoutLastCall: Number;
Public var sessionExpired: Boolean = false;
Public var enableTimeout: Boolean = true;
Private function timeoutHandler (event: FlexEvent): void
{
// Get current time
Var curTime: int = getTimer ();
Var timeDiff: int = 0;
If (isNaN (timeoutLastCall )){
TimeoutLastCall = curTime;
}
TimeDiff = curTime-timeoutLastCall;
TimeoutLastCall = curTime;
// If time has passed since the idle event we assume user is interacting
// Reset time total-otherwise increment total idle time
If (timeDiff & gt; 1000 ){
TimeoutTotal = 0;
}
Else {
// Update time
// The status field will not be updated unless the application is idle
// It is only display a countdown for learning purposes
TimeoutTotal ++ = 100;
Status. text = "Timeout in" + String (Number (timeout-timeoutTotal)/1000). toFixed (0) + "seconds ";
}
// If the total time of inactivity passes our timeout
// And the session already hasn' t expired then logout user
If (timeoutTotal> timeout &&! SessionExpired ){
// Logout user
// Or set flag
SessionExpired = true;
Status. text = "timeout threshold has been reached ";
// Statement executed after the time limit is exceeded
SessionTimeoutHandler ();
}
}