/**
* Start listening for key presses
*
* @param string|null $promptType
* @return boolean
*/
protected function _listenForKeyPresses($promptType = null)
{
$this->_dtmfHandler->reset();
$this->_dtmfHandler->setContextParams(array('promptType' => $promptType));
$this->_dtmfHandler->addEventListener(Streamwide_Engine_Events_Event::KEY, array('callback' => array($this, 'onKeyPressed')));
$listening = $this->_dtmfHandler->startListening();
if (!$listening) {
$this->_dtmfHandler->flushEventListeners();
}
return $listening;
}
/**
* Decrement the counter and give the user another try
*
* @param boolean $decrement
* @return boolean
*/
protected function _retry($decrement = true)
{
if (true === $decrement) {
$this->_counter->decrement();
}
if ($this->_counter->hasMoreTries()) {
$this->_timer->reset();
$this->_dtmfHandler->reset();
$this->_mediaPlayer->reset();
$this->dispatchErrorEvent(self::BAD_TRY_ERR_CODE);
return $this->enter();
} else {
$this->dispatchErrorEvent(self::NO_TRIES_LEFT_ERR_CODE);
return false;
}
}
