ComponentDecoratorTrait.php

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<?php

declare(strict_types=1);

namespace ILIAS\GlobalScreen\Scope;

use Closure;
use ILIAS\UI\Component\Component;
use ILIAS\GlobalScreen\isGlobalScreenItem;
use ILIAS\UI\Component\JavaScriptBindable;
use ILIAS\UI\Component\Symbol\Symbol;
use ILIAS\UI\Help\Topic;

trait ComponentDecoratorTrait
{
    use CheckClosureTrait;

    private ?Closure $component_decorator = null;
    private ?Closure $triggerer_decorator = null;
    private ?Closure $symbol_decorator = null;

    private array $topics = [];

    public function withTopics(Topic ...$topics): self
    {
        $this->topics = $topics;

        return $this;
    }

    public function getTopics(): array
    {
        return $this->topics;
    }

    public function addComponentDecorator(Closure $component_decorator): self
    {
        $this->checkClosureForSignature($component_decorator, Component::class);

        if ($this->component_decorator instanceof Closure) {
            $existing = $this->component_decorator;
            $this->component_decorator = static function (Component $c) use (
                $component_decorator,
                $existing
            ): Component {
                $component = $existing($c);

                return $component_decorator($component);
            };
        } else {
            $this->component_decorator = $component_decorator;
        }

        return $this;
    }

    public function getComponentDecorator(): ?Closure
    {
        return $this->component_decorator;
    }

    public function addSymbolDecorator(Closure $symbol_decorator): isDecorateable
    {
        $this->checkClosureForSignature($symbol_decorator, Symbol::class);

        if ($this->symbol_decorator instanceof Closure) {
            $existing = $this->symbol_decorator;
            $this->symbol_decorator = static function (Symbol $c) use ($symbol_decorator, $existing): Symbol {
                $component = $existing($c);

                return $symbol_decorator($component);
            };
        } else {
            $this->symbol_decorator = $symbol_decorator;
        }

        return $this;
    }

    public function getSymbolDecorator(): ?Closure
    {
        return $this->symbol_decorator;
    }
}