/**
* Get all sources
* @param CategoryInterface $category
*
* @return array
*/
public function getAllSources(CategoryInterface $category = null)
{
$sources = [];
if ($this->isValid()) {
$categories = $category === null ? $this->categoryManager->getTrees() : $category->getChildren();
foreach ($categories as $category) {
$sources[] = ['id' => $category->getCode(), 'text' => sprintf('%s (%s)', $category->getLabel(), $category->getCode())];
$sources = array_merge($sources, $this->getAllSources($category));
}
}
return $sources;
}