/**
* Indicate that the candidate is ending its candidate session.
*
* In other words, the candidate makes the item session
* go from the INTERACTING mode to the SUSPENDED mode, without ending the attempt. The attempt can be resumed by a
* call to the beginCandidateSession() method.
*
* @throws AssessmentItemSessionException If a state violation occurs.
*/
public function endCandidateSession()
{
$state = $this->getState();
if ($state !== AssessmentItemSessionState::INTERACTING) {
$msg = "Cannot switch from state " . strtoupper(AssessmentItemSessionState::getNameByConstant($state)) . " to state SUSPENDED.";
$code = AssessmentItemSessionException::STATE_VIOLATION;
throw new AssessmentItemSessionException($msg, $this, $code);
} else {
$this->endAttempt(null, false);
$this->setState(AssessmentItemSessionState::SUSPENDED);
}
}
/**
* Set the item session in INTERACTING state.
*
* @throws AssessmentItemSessionException With code STATE_VIOLATION if the state of the session is not INITIAL nor SUSPENDED nor MODAL_FEEDBACK nor INTERACTING.
*/
public function interact()
{
$state = $this->getState();
if ($state !== AssessmentItemSessionState::INTERACTING) {
if ($state !== AssessmentItemSessionState::INITIAL && $state !== AssessmentItemSessionState::SUSPENDED && $state !== AssessmentItemSessionState::MODAL_FEEDBACK) {
$msg = "Cannot switch from state '" . AssessmentItemSessionState::getNameByConstant($state) . "' to state 'interacting'.";
$code = AssessmentItemSessionException::STATE_VIOLATION;
throw new AssessmentItemSessionException($msg, $this, $code);
}
$this->setState(AssessmentItemSessionState::INTERACTING);
// Reset the time reference. If not, the time spent in SUSPENDED mode will be taken into account!
$this->setTimeReference(new DateTime('now', new DateTimeZone('UTC')));
}
}