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✏️ Editing: ContextProvider.php

<?php
/**
 * Matomo - free/libre analytics platform
 *
 * @link https://matomo.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 */
namespace Piwik\Plugins\TagManager\Context;

use Piwik\Container\StaticContainer;

use Piwik\Plugin\Manager;

class ContextProvider {

/**
     * @var BaseContext[]
     */
    private $cached;

/**
     * @var Manager
     */
    private $pluginManager;

public function __construct(Manager $pluginManager)
    {
        $this->pluginManager = $pluginManager;
    }

public function checkIsValidContext($contextId)
    {
        if (!$this->getContext($contextId)) {
            throw new \Exception(sprintf('The context "%s" is not supported', $contextId));
        }
    }

/**
     * @param string $contextId  eg "web"
     * @return BaseContext|null
     */
    public function getContext($contextId)
    {
        foreach ($this->getAllContexts() as $context) {
            if ($context->getId() === $contextId) {
                return $context;
            }
        }
    }

/**
     * @return BaseContext[]
     */
    public function getAllContexts()
    {
        if (!isset($this->cached)) {
            $tags = $this->pluginManager->findMultipleComponents('Context', 'Piwik\\Plugins\\TagManager\\Context\\BaseContext');

$this->cached = array();
            foreach ($tags as $tag) {
                $this->cached[] = StaticContainer::get($tag);
            }

usort($this->cached, function ($a, $b) {
                /** @var $a baseContext */
                /** @var $b baseContext */
                return $a->getOrder() - $b->getOrder();
            });
        }

return $this->cached;
    }

}

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