/**
* Create a tree states instance.
*
* @return TreeNodeStates
*/
public function getTreeNodeStates()
{
if (!isset($this->nodeStates)) {
$environment = $this->getEnvironment();
$sessionStorage = $environment->getSessionStorage();
$this->nodeStates = new TreeNodeStates($sessionStorage->get($this->getToggleId()), $this->determineParentsOfValues());
// Maybe it is not the best location to do this here.
if ($environment->getInputProvider()->getParameter('ptg') == 'all') {
// Save in session and reload.
$sessionStorage->set($this->getToggleId(), $this->nodeStates->setAllOpen($this->nodeStates->isAllOpen())->getStates());
$environment->getEventDispatcher()->dispatch(ContaoEvents::CONTROLLER_RELOAD, new ReloadEvent());
}
}
return $this->nodeStates;
}
/**
* Check the state of a model and set the metadata accordingly.
*
* @param ModelInterface $model The model of which the state shall be checked of.
*
* @param int $level The tree level the model is contained within.
*
* @return void
*/
private function determineModelState(ModelInterface $model, $level)
{
$model->setMeta(DCGE::TREE_VIEW_LEVEL, $level);
$model->setMeta($model::SHOW_CHILDREN, $this->states->isModelOpen($model->getProviderName(), $model->getId()));
}
/**
* Save a tree node states instance to the session.
*
* @param TreeNodeStates $states The instance to be saved.
*
* @return void
*/
protected function saveTreeNodeStates(TreeNodeStates $states)
{
$sessionStorage = $this->getEnvironment()->getSessionStorage();
$sessionStorage->set($this->getToggleId(), $states->getStates());
}