class.ilLMEditGSToolProvider.php

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<?php

use ILIAS\GlobalScreen\Scope\Tool\Provider\AbstractDynamicToolProvider;
use ILIAS\GlobalScreen\ScreenContext\Stack\CalledContexts;
use ILIAS\GlobalScreen\ScreenContext\Stack\ContextCollection;

class ilLMEditGSToolProvider extends AbstractDynamicToolProvider
{
    const SHOW_TREE = 'show_tree';


    public function isInterestedInContexts() : ContextCollection
    {
        return $this->context_collection->main()->repository();
    }


    public function getToolsForContextStack(CalledContexts $called_contexts) : array
    {
        $tools = [];
        $additional_data = $called_contexts->current()->getAdditionalData();
        if ($additional_data->is(self::SHOW_TREE, true)) {
            $title = $this->dic->language()->txt('objs_st');
            $icon = $this->dic->ui()->factory()->symbol()->icon()->custom(\ilUtil::getImagePath("outlined/icon_chp.svg"), $title);

            $iff = function ($id) {
                return $this->identification_provider->contextAwareIdentifier($id);
            };
            $l = function (string $content) {
                return $this->dic->ui()->factory()->legacy($content);
            };
            $tools[] = $this->factory->tool($iff("tree"))
                ->withTitle($title)
                ->withSymbol($icon)
                ->withContentWrapper(function () use ($l) {
                    return $l($this->getContent());
                });
        }

        return $tools;
    }


    private function getContent() : string
    {
        $service = new ilLMEditService($_GET);
        $lm = $service->getLearningModule();

        $exp = new ilLMEditorExplorerGUI("illmeditorgui", "showTree", $lm);

        return $exp->getHTML();
    }
}