vendor/maximebf/debugbar/src/DebugBar/OpenHandler.php

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<?php
/*
 * This file is part of the DebugBar package.
 *
 * (c) 2013 Maxime Bouroumeau-Fuseau
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace DebugBar;

/**
 * Handler to list and open saved dataset
 */
class OpenHandler
{
    protected $debugBar;

    /**
     * @param DebugBar $debugBar
     * @throws DebugBarException
     */
    public function __construct(DebugBar $debugBar)
    {
        if (!$debugBar->isDataPersisted()) {
            throw new DebugBarException("DebugBar must have a storage backend to use OpenHandler");
        }
        $this->debugBar = $debugBar;
    }

    /**
     * Handles the current request
     *
     * @param array $request Request data
     * @param bool $echo
     * @param bool $sendHeader
     * @return string
     * @throws DebugBarException
     */
    public function handle($request = null, $echo = true, $sendHeader = true)
    {
        if ($request === null) {
            $request = $_REQUEST;
        }

        $op = 'find';
        if (isset($request['op'])) {
            $op = $request['op'];
            if (!in_array($op, array('find', 'get', 'clear'))) {
                throw new DebugBarException("Invalid operation '{$request['op']}'");
            }
        }

        if ($sendHeader) {
            $this->debugBar->getHttpDriver()->setHeaders(array(
                    'Content-Type' => 'application/json'
                ));
        }