class.ilPCListItem.php

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<?php

class ilPCListItem extends ilPageContent
{
    public function init(): void
    {
        $this->setType("li");
    }

    public function newItemAfter(): void
    {
        $li = $this->getDomNode();
        $new_li = $this->dom_doc->createElement("ListItem");
        if ($next_li = $li->nextSibling) {
            $new_li = $next_li->parentNode->insertBefore($new_li, $next_li);
        } else {
            $parent_list = $li->parentNode;
            $new_li = $parent_list->appendChild($new_li);
        }
    }


    public function newItemBefore(): void
    {
        $li = $this->getDomNode();
        $new_li = $this->dom_doc->createElement("ListItem");
        $new_li = $li->parentNode->insertBefore($new_li, $li);
    }


    public function deleteItem(): void
    {
        $parent_node = $this->getDomNode()->parentNode;
        $cnt = count($parent_node->childNodes);
        if ($cnt == 1) {
            // if list item is the last one -> delete whole list
            $grandma = $parent_node->parentNode;
            $grandma->parentNode->removeChild($grandma);
        } else {
            $li = $this->getDomNode();
            $li->parentNode->removeChild($li);
        }
    }

    public function moveItemDown(): void
    {
        $li = $this->getDomNode();
        $next = $li->nextSibling;
        $next_copy = $next->cloneNode(true);
        $next_copy = $li->parentNode->insertBefore($next_copy, $li);
        $next->parentNode->removeChild($next);
    }

    public function moveItemUp(): void
    {
        $li = $this->getDomNode();
        $prev = $li->previousSibling;
        $li_copy = $li->cloneNode(true);
        $li_copy = $prev->parentNode->insertBefore($li_copy, $prev);
        $li->parentNode->removeChild($li);
    }
}