PaginateController.php

<?php
namespace Emmar\MsPartners\ViewHelpers\Widget\Controller;
//namespace TYPO3\CMS\Fluid\ViewHelpers\Widget\Controller;

/*                                                                        *
 * This script is backported from the TYPO3 Flow package "TYPO3.Fluid".   *
 *                                                                        *
 * It is free software; you can redistribute it and/or modify it under    *
 * the terms of the GNU Lesser General Public License, either version 3   *
 *  of the License, or (at your option) any later version.                *
 *                                                                        *
 *                                                                        *
 * This script is distributed in the hope that it will be useful, but     *
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN-    *
 * TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser       *
 * General Public License for more details.                               *
 *                                                                        *
 * You should have received a copy of the GNU Lesser General Public       *
 * License along with the script.                                         *
 * If not, see http://www.gnu.org/licenses/lgpl.html                      *
 *                                                                        *
 * The TYPO3 project - inspiring people to share!                         *
 *                                                                        */
class PaginateController extends \TYPO3\CMS\Fluid\Core\Widget\AbstractWidgetController {

    /**
     * @var array
     */
    protected $configuration = array(
            'itemsPerPage' => 10,
            'insertAbove' => FALSE,
            'insertBelow' => TRUE,
            'maximumNumberOfLinks' => 99,
            'additionalParams' => array()
            );

    /**
     * @var array
     */
    protected $filter = array(
            );

    /**
     * @var \TYPO3\CMS\Extbase\Persistence\QueryResultInterface
     */
    protected $objects;

    /**
     * @var integer
     */
    protected $currentPage = 1;

    /**
     * @var integer
     */
    protected $maximumNumberOfLinks = 99;

    /**
     * @var integer
     */
    protected $numberOfPages = 1;

    /**
     * @return void
     */
    public function initializeAction() {
        $this->objects = $this->widgetConfiguration['objects'];
        $this->filter = $this->widgetConfiguration['filter'];
        $this->configuration = \TYPO3\CMS\Core\Utility\GeneralUtility::array_merge_recursive_overrule($this->configuration, $this->widgetConfiguration['configuration'], TRUE);
        $this->numberOfPages = ceil(count($this->objects) / (integer) $this->configuration['itemsPerPage']);
        $this->maximumNumberOfLinks = (integer) $this->configuration['maximumNumberOfLinks'];
    }

    /**
     * @param integer $currentPage
     * @return void
     */
    public function indexAction($currentPage = 1) {
        // set current page
        $this->currentPage = (integer) $currentPage;
        if ($this->currentPage < 1) {
            $this->currentPage = 1;
        }
        if ($this->currentPage > $this->numberOfPages) {
            // set $modifiedObjects to NULL if the page does not exist
            $modifiedObjects = NULL;
        } else {
            // modify query
            $itemsPerPage = (integer) $this->configuration['itemsPerPage'];
            $query = $this->objects->getQuery();
            $query->setLimit($itemsPerPage);
            if ($this->currentPage > 1) {
                $query->setOffset((integer) ($itemsPerPage * ($this->currentPage - 1)));
            }
            $modifiedObjects = $query->execute();
        }
        $this->view->assign('contentArguments', array(
            $this->widgetConfiguration['as'] => $modifiedObjects
        ));
        $this->view->assign('configuration', $this->configuration);
        $this->view->assign('filter', $this->filter);
        $this->view->assign('pagination', $this->buildPagination());
    }

    /**
     * If a certain number of links should be displayed, adjust before and after
     * amounts accordingly.
     *
     * @return void
     */
    protected function calculateDisplayRange() {
        $maximumNumberOfLinks = $this->maximumNumberOfLinks;
        if ($maximumNumberOfLinks > $this->numberOfPages) {
            $maximumNumberOfLinks = $this->numberOfPages;
        }
        $delta = floor($maximumNumberOfLinks / 2);
        $this->displayRangeStart = $this->currentPage - $delta;
        $this->displayRangeEnd = $this->currentPage + $delta + ($maximumNumberOfLinks % 2 === 0 ? 1 : 0);
        if ($this->displayRangeStart < 1) {
            $this->displayRangeEnd -= $this->displayRangeStart - 1;
        }
        if ($this->displayRangeEnd > $this->numberOfPages) {
            $this->displayRangeStart -= $this->displayRangeEnd - $this->numberOfPages;
        }
        $this->displayRangeStart = (integer) max($this->displayRangeStart, 1);
        $this->displayRangeEnd = (integer) min($this->displayRangeEnd, $this->numberOfPages);
    }

    /**
     * Returns an array with the keys "pages", "current", "numberOfPages", "nextPage" & "previousPage"
     *
     * @return array
     */
    protected function buildPagination() {
        $this->calculateDisplayRange();
        $pages = array();
        for ($i = $this->displayRangeStart; $i <= $this->displayRangeEnd; $i++) {
            $pages[] = array('number' => $i, 'isCurrent' => $i === $this->currentPage);
        }
        $pagination = array(
            'pages' => $pages,
            'current' => $this->currentPage,
            'numberOfPages' => $this->numberOfPages,
            'displayRangeStart' => $this->displayRangeStart,
            'displayRangeEnd' => $this->displayRangeEnd,
            'hasLessPages' => $this->displayRangeStart > 2,
            'hasMorePages' => $this->displayRangeEnd + 1 < $this->numberOfPages
        );
        if ($this->currentPage < $this->numberOfPages) {
            $pagination['nextPage'] = $this->currentPage + 1;
        }
        if ($this->currentPage > 1) {
            $pagination['previousPage'] = $this->currentPage - 1;
        }
        return $pagination;
    }

}

?>