<?php

/*

 * This file is part of the Pagerfanta package.

 *

 * (c) Pablo Díez <pablodip@gmail.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Pagerfanta\View;

use Pagerfanta\PagerfantaInterface;

/**

 * TwitterBootstrapView.

 *

 * View that can be used with the pagination module 

 * from the Twitter Bootstrap CSS Toolkit

 * http://twitter.github.com/bootstrap/

 *

 * @author Pablo Díez <pablodip@gmail.com>

 * @author Jan Sorgalla <jsorgalla@gmail.com>

 *

 * @api

 */

class TwitterBootstrapView implements ViewInterface

{

    /**

     * {@inheritdoc}

     */

    public function render(PagerfantaInterface $pagerfanta, $routeGenerator, array $options = array())

    {

        $options = array_merge(array(

            'proximity'           => 3,

            'prev_message'        => '← Previous',

            'prev_disabled_href'  => '',

            'next_message'        => 'Next →',

            'next_disabled_href'  => '',

            'dots_message'        => '…',

            'dots_href'           => '',

            'css_container_class' => 'pagination',

            'css_prev_class'      => 'prev',

            'css_next_class'      => 'next',

            'css_disabled_class'  => 'disabled',

            'css_dots_class'      => 'disabled',

            'css_active_class'    => 'active',

        ), $options);

        $currentPage = $pagerfanta->getCurrentPage();

        $startPage = $currentPage - $options['proximity'];

        $endPage = $currentPage + $options['proximity'];

        if ($startPage < 1) {

            $endPage = min($endPage + (1 - $startPage), $pagerfanta->getNbPages());

            $startPage = 1;

        }

        if ($endPage > $pagerfanta->getNbPages()) {

            $startPage = max($startPage - ($endPage - $pagerfanta->getNbPages()), 1);

            $endPage = $pagerfanta->getNbPages();

        }

        $pages = array();

        // previous

        $class = $options['css_prev_class'];

        $url   = $options['prev_disabled_href'];

        if (!$pagerfanta->hasPreviousPage()) {

            $class .= ' '.$options['css_disabled_class'];

        } else {

            $url = $routeGenerator($pagerfanta->getPreviousPage());

        }

        $pages[] = sprintf('<li class="%s"><a href="%s">%s</a></li>', $class, $url, $options['prev_message']);

        // first

        if ($startPage > 1) {

            $pages[] = sprintf('<li><a href="%s">%s</a></li>', $routeGenerator(1), 1);

            if (3 == $startPage) {

                $pages[] = sprintf('<li><a href="%s">%s</a></li>', $routeGenerator(2), 2);

            } elseif (2 != $startPage) {

                $pages[] = sprintf('<li class="%s"><a href="%s">%s</a></li>', $options['css_dots_class'], $options['dots_href'], $options['dots_message']);

            }

        }

        // pages

        for ($page = $startPage; $page <= $endPage; $page++) {

            $class = '';

            if ($page == $currentPage) {

                $class = sprintf(' class="%s"', $options['css_active_class']);

            }

            $pages[] = sprintf('<li%s><a href="%s">%s</a></li>', $class, $routeGenerator($page), $page);

        }

        // last

        if ($pagerfanta->getNbPages() > $endPage) {

            if ($pagerfanta->getNbPages() > ($endPage + 1)) {

                if ($pagerfanta->getNbPages() > ($endPage + 2)) {

                    $pages[] = sprintf('<li class="%s"><a href="%s">%s</a></li>', $options['css_dots_class'], $options['dots_href'], $options['dots_message']);

                } else {

                    $pages[] = sprintf('<li><a href="%s">%s</a></li>', $routeGenerator($endPage + 1), $endPage + 1);

                }

            }

            $pages[] = sprintf('<li><a href="%s">%s</a></li>', $routeGenerator($pagerfanta->getNbPages()), $pagerfanta->getNbPages());

        }

        // next

        $class = $options['css_next_class'];

        $url   = $options['next_disabled_href'];

        if (!$pagerfanta->hasNextPage()) {

            $class .= ' '.$options['css_disabled_class'];

        } else {

            $url = $routeGenerator($pagerfanta->getNextPage());

        }

        $pages[] = sprintf('<li class="%s"><a href="%s">%s</a></li>', $class, $url, $options['next_message']);

        return sprintf('<div class="%s"><ul>%s</ul></div>', $options['css_container_class'], implode('', $pages));

    }

    /**

     * {@inheritdoc}

     */

    public function getName()

    {

        return 'twitter_bootstrap';

    }

}