/**
* Render a single header button.
*
* @param CommandInterface $command The command definition.
*
* @return string
*/
protected function generateHeaderButton(CommandInterface $command)
{
$environment = $this->getEnvironment();
$extra = $command->getExtra();
$label = $this->translate($command->getLabel());
$dispatcher = $environment->getEventDispatcher();
if (isset($extra['href'])) {
$href = $extra['href'];
} else {
$href = '';
foreach ($command->getParameters() as $key => $value) {
$href .= '&' . $key . '=' . $value;
}
/** @var AddToUrlEvent $event */
$event = $dispatcher->dispatch(ContaoEvents::BACKEND_ADD_TO_URL, new AddToUrlEvent($href));
$href = $event->getUrl();
}
if (!strlen($label)) {
$label = $command->getName();
}
$buttonEvent = new GetGlobalButtonEvent($this->getEnvironment());
$buttonEvent->setAccessKey(isset($extra['accesskey']) ? trim($extra['accesskey']) : null)->setAttributes(' ' . ltrim($extra['attributes']))->setClass($extra['class'])->setKey($command->getName())->setHref($href)->setLabel($label)->setTitle($this->translate($command->getDescription()));
$environment->getEventDispatcher()->dispatch(GetGlobalButtonEvent::NAME, $buttonEvent);
// Allow to override the button entirely.
$html = $buttonEvent->getHtml();
if ($html !== null) {
return $html;
}
// Use the view native button building.
return sprintf('<a href="%s" class="%s" title="%s"%s>%s</a> ', $buttonEvent->getHref(), $buttonEvent->getClass(), specialchars($buttonEvent->getTitle()), $buttonEvent->getAttributes(), $buttonEvent->getLabel());
}
