class.ItemPresentationManager.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\Container\Content;
 
use ILIAS\Container\InternalDomainService;
use ILIAS\Container\Content\ItemBlock\ItemBlockSequence;
use ILIAS\Repository\Clipboard\ClipboardManager;
 
class ItemPresentationManager
{
    protected ?string $lang = null;
    protected bool $include_empty_blocks;
    protected ModeManager $mode_manager;
    protected ?bool $can_order = null;
    protected ?bool $can_delete = null;
    protected ClipboardManager $repo_clipboard;
    protected ?bool $can_manage = null;
    protected ItemBlock\ItemBlockSequenceGenerator $sequence_generator;
    protected ?\ilContainerUserFilter $container_user_filter = null;
    protected ?array $type_grps = null;
    protected ?ItemSetManager $item_set = null;
    protected \ilContainer $container;
    protected ItemSessionRepository $item_repo;
    protected InternalDomainService $domain;
 
    public function __construct(
        InternalDomainService $domain,
        \ilContainer $container,
        ?\ilContainerUserFilter $container_user_filter,
        ClipboardManager $repo_clipboard,
        bool $include_empty_blocks = true,
        ?string $lang = null
    ) {
        $this->container = $container;
        $this->domain = $domain;
        $this->container_user_filter = $container_user_filter;
        $this->repo_clipboard = $repo_clipboard;
        $this->mode_manager = $domain->content()->mode($container);
        $this->include_empty_blocks = $include_empty_blocks;
        $this->lang = $lang;
 
        // sequence from view manager
    }
 
    public function canManageItems(): bool
    {
        if (!is_null($this->can_manage)) {
            return $this->can_manage;
        }
        $user = $this->domain->user();
        $rbacsystem = $this->domain->rbac()->system();
        if ($user->getId() === ANONYMOUS_USER_ID || !is_object($this->container)) {
            return false;
        }
 
        if ($rbacsystem->checkAccess("write", $this->container->getRefId()) ||
            $this->container->getHiddenFilesFound() ||
            $this->repo_clipboard->hasEntries()) {
            $this->can_manage = true;
            return true;
        }
        $this->init();
        $this->can_manage = false;
        /* this is time consuming and probably not necessary
        foreach ($this->item_set->getAllRefIds() as $ref_id) {
            if ($this->can_manage === true) {
                break;
            }
            if ($rbacsystem->checkAccess("delete", $ref_id)) {
                $this->can_manage = true;
            }
        }*/
        return $this->can_manage;
    }
 
    public function canOrderItems(): bool
    {
        $user = $this->domain->user();
        $rbacsystem = $this->domain->rbac()->system();
 
        if (is_null($this->can_order)) {
            $this->can_order = false;
            if ($user->getId() !== ANONYMOUS_USER_ID &&
                is_object($this->container) &&
                $rbacsystem->checkAccess("write", $this->container->getRefId())) {
                $this->can_order = (\ilContainerSortingSettings::_lookupSortMode($this->container->getId()) === \ilContainer::SORT_MANUAL);
            }
        }
        return $this->can_order;
    }
 
    public function canDeleteItems(): bool
    {
        if (!is_null($this->can_delete)) {
            return $this->can_delete;
        }
 
        $access = $this->domain->access();
        foreach ($this->getAllRefIds() as $ref_id) {
            if ($access->checkAccess("delete", "", $ref_id)) {
                return $this->can_delete = true;
            }
        }
 
        return $this->can_delete = false;
    }
 
    public function isActiveItemOrdering(string $type): bool
    {
        // see #43205
        if ($this->mode_manager->isActiveItemOrdering()) {
            if ($type === "sess" && $this->container->getViewMode() === \ilContainer::VIEW_SESSIONS) {
                return false;
            }
            return true;
        }
        return false;
    }
 
    public function forceSessionOrderingByDate(): bool
    {
        // see #43205
        return ($this->container->getViewMode() === \ilContainer::VIEW_SESSIONS ||
            $this->container->getOrderType() !== \ilContainer::SORT_MANUAL);
    }
 
 
    protected function isClassificationFilterActive(): bool
    {
        $ref_id = $this->container->getRefId();
        // apply container classification filters
        $classification = $this->domain->classification($ref_id);
        foreach (\ilClassificationProvider::getValidProviders(
            $this->container->getRefId(),
            $this->container->getId(),
            $this->container->getType()
        ) as $class_provider) {
            $id = get_class($class_provider);
            $current = $classification->getSelectionOfProvider($id);
            if ($current) {
                return true;
            }
        }
        return false;
    }
 
    public function filteredSubtree(): bool
    {
        return $this->isClassificationFilterActive() && in_array(
            $this->container->getType(),
            ["grp", "crs"]
        );
    }
 
    protected function init(): void
    {
        // already initialised?
        if (!is_null($this->item_set)) {
            return;
        }
 
        // get view
        $view = $this->domain->content()->view($this->container);
        // get item set
        $ref_id = $this->container->getRefId();
        if ($this->filteredSubtree()) {
            $this->item_set = $this->domain->content()->itemSetTree($ref_id, $this->container_user_filter);
        } else {
            $this->item_set = $this->domain->content()->itemSetFlat(
                $ref_id,
                $this->container_user_filter,
                $this->forceSessionOrderingByDate(),
                $view instanceof ObjectiveViewManager
            );
        }
 
        // get item block sequence generator
        $this->sequence_generator = $this->domain->content()->itemBlockSequenceGenerator(
            $this->container,
            $view->getBlockSequence(),
            $this->item_set,
            $this->include_empty_blocks,
            $this->lang
        );
    }
 
    public function hasItems(): bool
    {
        $this->init();
        return $this->item_set->hasItems();
    }
 
    public function getItemBlockSequence(
        array $omit_ref_ids = []
    ): ItemBlockSequence {
        $this->init();
        $this->sequence_generator->setOmitRefIds($omit_ref_ids);
        return $this->sequence_generator->getSequence();
    }
 
    public function getPageEmbeddedBlockIds(): array
    {
        $this->init();
        return $this->sequence_generator->getPageEmbeddedBlockIds();
    }
 
    public function getRawDataByRefId(int $ref_id): ?array
    {
        $this->init();
        return $this->item_set->getRawDataByRefId($ref_id);
    }
 
    public function getAllRefIds(): ?array
    {
        $this->init();
        return $this->item_set->getAllRefIds();
    }
 
    public function getRefIdsOfType(string $type): array
    {
        $this->init();
        return $this->item_set->getRefIdsOfType($type);
    }
}