/**
* Construct and decide whether to show the captcha or not.
*
* @note Passing $page by reference to setup smarty vars easily.
* @param \Page $page
*/
public function __construct(&$page)
{
if (!$page instanceof \Page) {
throw new \InvalidArgumentException('Invalid Page variable provided');
}
$this->page = $page;
if ($this->shouldDisplay()) {
$this->page->smarty->assign('showCaptcha', true);
$this->page->smarty->assign('sitekey', $this->sitekey);
if ($this->page->isPostBack()) {
if (!$this->processCaptcha($_POST, $_SERVER['REMOTE_ADDR'])) {
$this->page->smarty->assign('error', $this->getError());
}
//Delete this key after using so it doesn't interfere with normal $_POST
//processing. (i.e. contact-us)
unset($_POST[Captcha::RECAPTCHA_POSTKEY]);
}
} else {
$this->page->smarty->assign('showCaptcha', false);
}
}
