class.ilPCPlaceHolderModelProvider.php

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<?php

use ILIAS\COPage\Dom\DomUtil;
use ILIAS\COPage\Editor\Components\PageComponentModelProvider;

class ilPCPlaceHolderModelProvider implements PageComponentModelProvider
{
    public function getModels(
        DomUtil $dom_util,
        \ilPageObject $page
    ): array {
        $models = [];

        foreach ($dom_util->path($page->getDomDoc(), "//PlaceHolder") as $node) {
            $par = $node->parentNode;
            $pc_id = $par->getAttribute("PCID");

            $model = new \stdClass();
            $model->contentClass = $node->getAttribute("ContentClass") ?? "";

            $models[$pc_id] = $model;
        }

        return $models;
    }
}