ButtonRendererFactory.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\UI\Implementation\Component\Button;
 
use ILIAS\UI\Component\Component;
use ILIAS\UI\Component\Button\Button as ButtonComponent;
use ILIAS\UI\Implementation\Render\ComponentRenderer;
use ILIAS\UI\Implementation\Render\DefaultRendererFactory;
 
class ButtonRendererFactory extends DefaultRendererFactory
{
    protected const array USE_FORM_CONTEXT_RENDERER_FOR_INDIRECT_DESCENDANTS_OF = [
        'StandardViewControlContainerInput',
        'StandardFilterContainerInput',
        'StandardFormContainerInput',
    ];
 
    public function getRendererInContext(Component $component, array $contexts): ComponentRenderer
    {
        if ($this->isIndirectInputContainerContext($contexts)) {
            return new IndirectInputContainerContextRenderer(
                $this->ui_factory,
                $this->tpl_factory,
                $this->lng,
                $this->js_binding,
                $this->image_path_resolver,
                $this->data_factory,
                $this->help_text_retriever,
                $this->upload_limit_resolver,
            );
        }
        return parent::getRendererInContext($component, $contexts);
    }
 
    protected function isIndirectInputContainerContext(array $contexts_asc): bool
    {
        // ensure minimum context size allowing indirect descendants
        $context_size = count($contexts_asc);
        if (3 > $context_size) {
            return false;
        }
        // check if button is direct descendant
        $direct_ancestor = $contexts_asc[$context_size - 2];
        if (in_array($direct_ancestor, self::USE_FORM_CONTEXT_RENDERER_FOR_INDIRECT_DESCENDANTS_OF, true)) {
            return false;
        }
        // check if button is indirect descendant
        $indirect_ancestors = array_splice($contexts_asc, 0, -2);
        return (0 < count(array_intersect($indirect_ancestors, self::USE_FORM_CONTEXT_RENDERER_FOR_INDIRECT_DESCENDANTS_OF)));
    }
}