class.ilMaterialExplorer.php

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<?php

class ilMaterialExplorer extends ilTreeExplorerGUI
{
    protected string $current_type;

    public function __construct(
        object $a_parent_obj,
        string $a_parent_cmd,
        string $a_selectable_type
    ) {
        global $DIC;

        $this->tree = $DIC->repositoryTree();
        $this->ctrl = $DIC->ctrl();
        $tree = $DIC->repositoryTree();

        parent::__construct("mat_rep_exp", $a_parent_obj, $a_parent_cmd, $tree);

        $this->current_type = $a_selectable_type;

        $this->setTypeWhiteList(array("root", "cat", "grp", "fold", "crs", $this->current_type));
        $this->setSkipRootNode(true);
        $this->setAjax(true);
    }

    public function getNodeContent($a_node): string
    {
        return $a_node["title"];
    }

    public function getNodeIcon($a_node): string
    {
        $obj_id = ilObject::_lookupObjId($a_node["child"]);
        return ilObject::_getIcon($obj_id, "tiny", $a_node["type"]);
    }

    public function getNodeHref($a_node): string
    {
        $ilCtrl = $this->ctrl;

        $ilCtrl->setParameter($this->parent_obj, 'source_id', $a_node["child"]);
        return $ilCtrl->getLinkTarget($this->parent_obj, 'linkChilds');
    }

    public function isNodeClickable($a_node): bool
    {
        return ($a_node["type"] === $this->current_type);
    }
}