AbstractBaseItem.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\GlobalScreen\Scope\MainMenu\Factory;
 
use ILIAS\GlobalScreen\Identification\IdentificationInterface;
use ILIAS\GlobalScreen\Identification\NullIdentification;
use ILIAS\GlobalScreen\Scope\ComponentDecoratorTrait;
use ILIAS\GlobalScreen\Scope\MainMenu\Collector\Information\TypeInformation;
use ILIAS\UI\Component\Legacy\Legacy;
use Closure;
 
abstract class AbstractBaseItem implements isItem
{
    use ComponentDecoratorTrait;
 
    protected $position = 0;
 
    private $is_visible_static;
 
    protected $provider_identification;
    protected $available_callable;
    protected $active_callable;
    protected $visiblility_callable;
    protected $is_always_available = false;
    protected $type_information;
    protected $non_available_reason;
 
    public function __construct(IdentificationInterface $provider_identification)
    {
        $this->provider_identification = $provider_identification;
    }
 
    public function getProviderIdentification() : IdentificationInterface
    {
        return $this->provider_identification;
    }
 
    public function withVisibilityCallable(callable $is_visible) : isItem
    {
        $clone = clone($this);
        $clone->visiblility_callable = $is_visible;
        $clone->is_visible_static = null;
 
        return $clone;
    }
 
    public function isVisible() : bool
    {
        if (isset($this->is_visible_static)) {
            return $this->is_visible_static;
        }
        if (!$this->isAvailable()) {
            return $this->is_visible_static = false;
        }
        if (is_callable($this->visiblility_callable)) {
            $callable = $this->visiblility_callable;
 
            $value = (bool) $callable();
 
            return $this->is_visible_static = $value;
        }
 
        return $this->is_visible_static = true;
    }
 
    public function withAvailableCallable(callable $is_available) : isItem
    {
        $clone = clone($this);
        $clone->available_callable = $is_available;
 
        return $clone;
    }
 
    public function isAvailable() : bool
    {
        if ($this->isAlwaysAvailable() === true) {
            return true;
        }
        if (is_callable($this->available_callable)) {
            $callable = $this->available_callable;
 
            return (bool) $callable();
        }
 
        return true;
    }
 
    public function withNonAvailableReason(Legacy $element) : isItem
    {
        $clone = clone $this;
        $clone->non_available_reason = $element;
 
        return $clone;
    }
 
    public function getNonAvailableReason() : Legacy
    {
        global $DIC;
 
        return $this->non_available_reason instanceof Legacy ? $this->non_available_reason : $DIC->ui()->factory()->legacy("");
    }
 
    public function isAlwaysAvailable() : bool
    {
        return $this->is_always_available;
    }
 
    public function withAlwaysAvailable(bool $always_active) : isItem
    {
        $clone = clone($this);
        $clone->is_always_available = $always_active;
 
        return $clone;
    }
 
    public function getPosition() : int
    {
        return $this->position;
    }
 
    public function withPosition(int $position) : isItem
    {
        $clone = clone($this);
        $clone->position = $position;
 
        return $clone;
    }
 
    public function setTypeInformation(TypeInformation $information) : isItem
    {
        $this->type_information = $information;
 
        return $this;
    }
 
    public function getTypeInformation() : ?TypeInformation
    {
        return $this->type_information;
    }
 
    public function isTop() : bool
    {
        if ($this instanceof isInterchangeableItem) {
            $changed = $this->hasChanged();
            if ($this instanceof isChild) {
                return $changed;
            } elseif ($this instanceof isTopItem) {
                return !$changed;
            }
        }
 
        return $this instanceof isTopItem;
    }
}