MainToolCollector.php

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<?php namespace ILIAS\GlobalScreen\Scope\Tool\Collector;

use Closure;
use ILIAS\GlobalScreen\Collector\AbstractBaseCollector;
use ILIAS\GlobalScreen\Collector\ItemCollector;
use ILIAS\GlobalScreen\Scope\MainMenu\Collector\Handler\TypeHandler;
use ILIAS\GlobalScreen\Scope\MainMenu\Collector\Information\ItemInformation;
use ILIAS\GlobalScreen\Scope\MainMenu\Collector\Information\TypeInformation;
use ILIAS\GlobalScreen\Scope\MainMenu\Collector\Information\TypeInformationCollection;
use ILIAS\GlobalScreen\Scope\Tool\Collector\Renderer\ToolItemRenderer;
use ILIAS\GlobalScreen\Scope\Tool\Collector\Renderer\TreeToolItemRenderer;
use ILIAS\GlobalScreen\Scope\Tool\Factory\isToolItem;
use ILIAS\GlobalScreen\Scope\Tool\Factory\Tool;
use ILIAS\GlobalScreen\Scope\Tool\Factory\TreeTool;
use ILIAS\GlobalScreen\Scope\Tool\Provider\DynamicToolProvider;
use ILIAS\GlobalScreen\Identification\IdentificationInterface;

class MainToolCollector extends AbstractBaseCollector implements ItemCollector
{

    private $information;
    private $type_information_collection;
    private $tools;
    private $providers = [];


    public function __construct(array $providers, ItemInformation $information = null)
    {
        $this->providers = $providers;
        $this->information = $information;
        $this->type_information_collection = new TypeInformationCollection();

        // Tool
        $tool = new TypeInformation(Tool::class, Tool::class, new ToolItemRenderer());
        $tool->setCreationPrevented(true);
        $this->type_information_collection->add($tool);

        $tool = new TypeInformation(TreeTool::class, TreeTool::class, new TreeToolItemRenderer());
        $tool->setCreationPrevented(true);
        $this->type_information_collection->add($tool);

        $this->tools = [];
    }


    public function collectStructure() : void
    {
        global $DIC;
        $called_contexts = $DIC->globalScreen()->tool()->context()->stack();

        $tools_to_merge = [];

        foreach ($this->providers as $provider) {
            $context_collection = $provider->isInterestedInContexts();
            if ($context_collection->hasMatch($called_contexts)) {
                $tools_to_merge[] = $provider->getToolsForContextStack($called_contexts);
            }
        }
        $this->tools = array_merge([], ...$tools_to_merge);
    }


    public function filterItemsByVisibilty(bool $async_only = false) : void
    {
        $this->tools = array_filter($this->tools, $this->getVisibleFilter());
    }

    public function getSingleItem(IdentificationInterface $identification) : isToolItem
    {
        foreach ($this->tools as $tool) {
            if ($tool->getProviderIdentification()->serialize() === $identification->serialize()) {
                return $tool;
            }
        }
        return new Tool($identification);
    }


    public function prepareItemsForUIRepresentation() : void
    {
        array_walk($this->tools, function (isToolItem $tool) {
            $this->applyTypeInformation($tool);
        });
    }

    public function cleanupItemsForUIRepresentation() : void
    {
        // TODO: Implement cleanupItemsForUIRepresentation() method.
    }

    public function sortItemsForUIRepresentation() : void
    {
        usort($this->tools, $this->getItemSorter());
    }


    public function getItemsForUIRepresentation() : \Generator
    {
        yield from $this->tools;
    }


    public function hasItems() : bool
    {
        return count($this->tools) > 0;
    }


    private function applyTypeInformation(isToolItem $item) : isToolItem
    {
        $item->setTypeInformation($this->getTypeInfoermationForItem($item));

        return $item;
    }


    private function getTypeInfoermationForItem(isToolItem $item) : TypeInformation
    {
        $type = get_class($item);

        return $this->type_information_collection->get($type);
    }


    private function getVisibleFilter() : Closure
    {
        return static function (isToolItem $tool) {
            return ($tool->isAvailable() && $tool->isVisible());
        };
    }


    private function getItemSorter() : Closure
    {
        return static function (isToolItem &$a, isToolItem &$b) {
            return $a->getPosition() > $b->getPosition();
        };
    }
}