source: extensions/rv_menutree/branches/2.0-radu/main.inc.php @ 3574

<?php /*
Plugin Name: RV Menu Tree
Version: 2.0.c
Plugin URI: http://piwigo.org/ext/extension_view.php?eid=238
Description: Replaces the categories in the menu bar with a nicer one (javascript).
Author: rvelices
Author URI: http://www.modusoptimus.com
*/

if (!function_exists('rv_ua_is_handheld'))
{
        function rv_ua_is_handheld()
        {
                if ( isset($_SESSION['is_handheld']) )
                        return $_SESSION['is_handheld'];
                $ret=false;
                if ( strpos($_SERVER['HTTP_USER_AGENT'], 'BlackBerry')!==false )
                        $ret=true;
                if ( session_id()!="" )
                        $_SESSION['is_handheld']=$ret;
                return $ret;
        }
}

add_event_handler('get_categories_menu_sql_where', 'rv_mt_get_categories_menu_sql_where', EVENT_HANDLER_PRIORITY_NEUTRAL, 3 );

function rv_mt_get_categories_menu_sql_where($where, $expand, $filter)
{
        if (rv_ua_is_handheld()) return $where;
        add_event_handler('get_html_menu_category', 'rv_mt_get_html_menu_category', EVENT_HANDLER_PRIORITY_NEUTRAL, 3);

        if ($expand)
                return $where;
        if ($filter)
        {
                global $rv_mt_all_open;
                $rv_mt_all_open = true;
                return $where;
        }

        global $page;
        if ( !isset($page['category']) )
                $where = 'id_uppercat IS NULL OR uppercats REGEXP \'^[0-9]+,[0-9]+$\'';
        else
        {
                $where = 'id_uppercat is NULL
  OR uppercats LIKE "'.$page['category']['upper_names'][0]['id'].',%"
  OR uppercats REGEXP \'^[0-9]+,[0-9]+$\'';
        }
        return $where;
}


function rv_mt_get_html_menu_category($menu, $categories, $selected_category)
{
        $start = get_moment();

        $ref_level = 0;
        $level = 0;
        $menu = '';

        $upper_ids=array();
        if ( null!=$selected_category)
                $upper_ids = array_flip( explode(',', $selected_category['uppercats']) );

        $url_perma = make_index_url( array( 'category' => array('id'=>0, 'name'=>'', 'permalink'=> '@permalink@') ) );
        $url_no_perma = make_index_url( array( 'category' => array('id'=>999999, 'name'=>'xxxnamexxx', 'permalink'=> '') ) );

        foreach ($categories as $category)
        {
                $level = substr_count($category['global_rank'], '.') + 1;
                if ($level > $ref_level)
                {
                        if ($ref_level==0)
                                $menu.= "\n<ul class=\"rvTree\" id=\"theCategoryMenu\">";
                        else
                                $menu.= "\n<ul>";
                }
                elseif ($level == $ref_level)
                        $menu.= "</li>";
                elseif ($level < $ref_level)
                {
                        // we may have to close more than one level at the same time...
                        $menu.= "</li>";
                        $menu.= str_repeat("\n</ul></li>",($ref_level-$level));
                }
                $ref_level = $level;

                $menu.= "\n<li";
                $class_names = array();
                if ($category['id'] == @$selected_category['id'])
                        array_push( $class_names, 'selected');
                global $rv_mt_all_open;

                if ($category['count_categories']>0)
                {
                        if ( isset($rv_mt_all_open) and $rv_mt_all_open )
                                array_push( $class_names, 'liOpen');
                        elseif ( isset( $upper_ids[ $category['id'] ] ) )
                        {
                                array_push( $class_names, 'liOpen');
                                unset($upper_ids[ $category['id'] ] );
                        }
                        else
                                array_push( $class_names, 'liClosed');
                }

                if (count($class_names))
                        $menu.= ' class="'.implode($class_names,' ').'"';
                $menu.= '>';

                if ( empty($category['permalink']) )
                        $url = str_replace( array('999999', 'xxxnamexxx'), array($category['id'], str2url($category['name'])), $url_no_perma);
                else
                        $url = str_replace('@permalink@', $category['permalink'], $url_perma);

                $title = get_display_images_count(
                                                        $category['nb_images'], $category['count_images'], $category['count_categories'],
                                                        false,
                                                        ' / '
                                                );

                $menu.= '<a href="'.$url.'"';
                if ($selected_category!=null and $category['id'] == $selected_category['id_uppercat'])
                        $menu.= ' rel="up"';
                $menu.= ' title="'.$title.'">'
                        //.trigger_event('render_category_name', $category['name'], 'get_html_menu_category')
                        .$category['name']
                        .'</a>';

                if ( $category['count_images']>0 )
                {// at least one direct or indirect image
                        $menu.= '<span class="menuInfoCat'
                                .($category['nb_images'] == 0 ? 'ByChild' : '')
                                .'" title="'.$title.'"> ['.$category['count_images'].']</span>';
                }
                $menu.= get_icon($category['max_date_last'], @$category['max_date_last']> @$category['date_last']);
        }

        $menu.= str_repeat("\n</li></ul>",($level));
        $menu.= '<script type="text/javascript">RVTree.convertTree( document.getElementById("theCategoryMenu") );</script>';

        $dirname = dirname(__FILE__);
        $head = '<style type="text/css">'. str_replace( 'url(', 'url('.get_root_url().'plugins/'.basename($dirname).'/',file_get_contents($dirname.'/rvtree-min.css')).'</style>
<script type="text/javascript" src="'.get_root_url().'plugins/'. basename(dirname(__FILE__)).'/rvtree-min.js"></script>';

        pwg_debug('rv_mt_get_html_menu_category took '.number_format(get_moment() - $start,3,'.',' ') );
        global $template;
        $template->append( 'head_elements', $head);
        return $menu;
}
?>