/**
* Add a localized message to the response
* @param string $translationKey translation key of the message
* @param string $type type of the message
* @param array $vars array with variables for the translator
* @return null
*/
private function addMessage($translationKey, $type, $vars)
{
$message = new Message($translationKey, $type, $vars);
$this->response->addMessage($message);
}
/**
* Send the response to the client
* @return null
*/
private function sendResponse()
{
$this->eventManager->runEvent(self::EVENT_PRE_RESPONSE);
$statusCode = $this->response->getStatusCode();
$headers = $this->response->getHeaders();
$this->sendHeaders($statusCode, $headers);
if (!$this->response->willRedirect()) {
$view = $this->response->getView();
if (!empty($view)) {
$view->render(false);
}
}
$this->eventManager->runEvent(self::EVENT_POST_RESPONSE);
}
/**
* Invokes the wizard
* @param zibo\core\Request $request The request
* @param zibo\core\Response $response The response
* @return null
* @throws zibo\ZiboException when there are no steps in this wizard
*/
public function invoke(Request $request, Response $response)
{
if (!$this->steps) {
throw new ZiboException('This wizard does not contain any steps');
}
$this->request = $request;
$this->response = $response;
$this->currentStep = $this->getVariable(self::VARIABLE_CURRENT_STEP, $this->defaultStep);
$step = $this->steps[$this->currentStep];
$step->prepareForm();
if ($this->isSubmitted()) {
if ($this->getValue(self::BUTTON_CANCEL)) {
$this->reset();
if ($this->cancelUrl) {
$this->response->setRedirect($this->cancelUrl);
} else {
$this->response->setRedirect($this->request->getBaseUrl());
}
return;
}
$nextStep = null;
if ($this->getValue(self::BUTTON_PREVIOUS)) {
$nextStep = $step->previous();
} elseif ($this->getValue(self::BUTTON_NEXT)) {
$nextStep = $step->next();
} elseif ($this->getValue(self::BUTTON_FINISH)) {
$nextStep = $step->finish();
}
if ($nextStep) {
if (!$this->hasStep($nextStep)) {
throw new ZiboException('Cannot set the next step, invalid return value of step ' . $this->currentStep);
}
$this->setVariable(self::VARIABLE_CURRENT_STEP, $nextStep);
$response->setRedirect($this->action);
}
if ($response->willRedirect()) {
return;
}
}
if (!$step->hasPrevious()) {
$this->setIsDisabled(true, self::BUTTON_PREVIOUS);
}
if (!$step->hasNext()) {
$this->setIsDisabled(true, self::BUTTON_NEXT);
}
if (!$step->hasFinish()) {
$this->setIsDisabled(true, self::BUTTON_FINISH);
}
if (!$step->hasCancel()) {
$this->setIsDisabled(true, self::BUTTON_CANCEL);
}
$view = $this->getView($step);
if ($response->willRedirect()) {
return;
}
$response->setView($view);
}
