public function moveTheme(int $themeId, int $newParentThemeId = null, int $position = SerialManager::POSITION_LAST) : Theme
{
$theme = $this->getThemeById($themeId);
$themeIsMovingToAnotherTree = $theme->getParentId() !== $newParentThemeId;
if ($themeIsMovingToAnotherTree) {
$oldParentId = $theme->getParentId();
if ($newParentThemeId === null) {
$theme->setParent(null);
} else {
$theme->setParent($this->getEntityManager()->getReference(Theme::class, $newParentThemeId));
}
$sameLevelThemes = $this->getThemesByParentId($newParentThemeId);
$serialManager = new SerialManager($sameLevelThemes);
$serialManager->insertAs($theme, $position);
$serialManager->normalize();
$this->normalizeTree($oldParentId);
$this->getEntityManager()->flush();
} else {
$sameLevelThemes = $this->getThemesByParentId($newParentThemeId);
$serialManager = new SerialManager($sameLevelThemes);
$serialManager->swap($serialManager->locate($position), $theme);
$serialManager->normalize();
$this->getEntityManager()->flush();
}
return $theme;
}
public function normalize()
{
$serialManager = new SerialManager($this->items);
$serialManager->normalize();
$reorder = [];
for ($i = 1; $i <= count($this->items); $i++) {
$reorder[] = $serialManager->locate($i);
}
if (count($reorder) !== count($this->items)) {
throw new \Exception('SerialManager did something completely wrong.');
}
$this->items = $reorder;
foreach ($this->items as $subItem) {
if ($subItem->sub()->hasChild()) {
$subItem->sub()->normalize();
}
}
}
