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<?php

/**
 *
 * Lets you create custom menus and place them on your theme pages.
 *
 * Use the <var>Menu</var> tab to create your menus. Use <var>printCustomMenu()</var> to place them on your pages.
 *
 * This plugin is recommend for customized themes only that do not use the standard Zenphoto
 * display structure. Standard Zenphoto functions like the breadcrumb functions or the <var>next_album()</var>
 * loop for example will <b>NOT</b> take care of this menu's structure!
 *
 * @author Stephen Billard (sbillard), Malte Müller (acrylian)
 * @package plugins
 * @subpackage menu-manager
 */
$plugin_is_filter = 5 | ADMIN_PLUGIN | THEME_PLUGIN;
$plugin_description = gettext("A menu creation facility. The <em>Menu</em> tab admin interface lets you create arbitrary menu trees.");
$plugin_author = "Stephen Billard (sbillard), Malte Müller (acrylian)";
$plugin_category = gettext('Media');

$option_interface = 'menu_manager';

if (OFFSET_PATH) {
    require_once(dirname(dirname(__FILE__)) . '/template-functions.php');
    zp_register_filter('admin_tabs', 'menu_tabs');
} else {
    zp_register_filter('admin_toolbox_global', 'menu_admin_toolbox_global');
}

/**
 *
 * option handler
 * @author Stephen
 *
 */
class menu_manager {

    /**
     *
     * class instantiator
     */
    function __construct() {
        setOptionDefault('menu_truncate_string', 0);
        setOptionDefault('menu_truncate_indicator', '');
    }

    function getOptionsSupported() {
        global $_common_truncate_handler;

        $options = array(
                gettext('Truncate indicator*') => array(
                        'key' => 'menu_truncate_indicator',
                        'type' => OPTION_TYPE_TEXTBOX,
                        'order' => 2,
                        'disabled' => $_common_truncate_handler,
                        'desc' => gettext('Append this string to truncated titles.')),
                gettext('Truncate titles*') => array(
                        'key' => 'menu_truncate_string',
                        'type' => OPTION_TYPE_TEXTBOX,
                        'order' => 1,
                        'desc' => gettext('Limit titles to this many characters. Zero means no limit.'))
        );
        if ($_common_truncate_handler) {
            $options['note'] = array(
                    'key' => 'menu_truncate_note',
                    'type' => OPTION_TYPE_NOTE,
                    'order' => 8,
                    'desc' => '<p class="notebox">' . $_common_truncate_handler . '</p>');
        } else {
            $_common_truncate_handler = gettext('* These options may be set via the <a href="javascript:gotoName(\'menu_manager\');"><em>menu_manager</em></a> plugin options.');
            $options['note'] = array(
                    'key' => 'menu_truncate_note',
                    'type' => OPTION_TYPE_NOTE,
                    'order' => 8,
                    'desc' => gettext('<p class="notebox">*<strong>Note:</strong> The setting of these options are shared with other plugins.</p>'));
        }
        return $options;
    }

    function handleOption($option, $currentValue) {
        
    }

}

/**
 *
 * Add menu to the admin toolbox
 */
function menu_admin_toolbox_global($zf) {
    if (zp_loggedin(ADMIN_RIGHTS)) {
        echo "<li>";
        printLinkHTML($zf . '/' . PLUGIN_FOLDER . '/menu_manager/menu_tab.php', gettext("Menu"), NULL, NULL, NULL);
        echo "</li>\n";
    }
}

/**
 * Adds menu manager to admin tabs
 *
 * @param $tabs array Admin tabs
 * @param string $current current tab
 * @return unknown
 */
function menu_tabs($tabs) {
    if (zp_loggedin()) {
        $newtabs = array();
        foreach ($tabs as $key => $tab) {
            if ($key == 'tags') {
                $newtabs['menu'] = array(
                        'text' => gettext("menu"),
                        'link' => FULLWEBPATH . '/' . ZENFOLDER . '/' . PLUGIN_FOLDER . '/menu_manager/menu_tab.php?page=menu&amp;tab=menu',
                        'default' => 'menu',
                        'subtabs' => NULL);
            }
            $newtabs[$key] = $tab;
        }
        return $newtabs;
    }
    return $tabs;
}

/*
 *
 * Common functions
 *
 */

$_menu_manager_items = array();

/**
 * Gets the menu items
 *
 * @param string $menuset the menu tree desired
 * @param string $visible
 * @return array
 */
function getMenuItems($menuset, $visible) {
    global $_menu_manager_items;
    if (array_key_exists($menuset, $_menu_manager_items) &&
                    array_key_exists($visible, $_menu_manager_items[$menuset])) {
        return $_menu_manager_items[$menuset][$visible];
    }
    switch ($visible) {
        case 'visible':
            $where = " WHERE `show` = 1 AND menuset = " . db_quote($menuset);
            break;
        case 'hidden':
            $where = " WHERE `show` = 0 AND menuset = " . db_quote($menuset);
            break;
        default:
            $where = " WHERE menuset = " . db_quote($menuset);
            $visible = 'all';
            break;
    }
    $result = query_full_array("SELECT * FROM " . prefix('menu') . $where . " ORDER BY sort_order", false);
    $_menu_manager_items[$menuset][$visible] = $result;
    return $_menu_manager_items[$menuset][$visible];
}

/**
 * Gets a menu item by its id
 *
 * @param integer $id id of the item
 * @return array
 */
function getItem($id) {
    $menuset = checkChosenMenuset();
    $result = query_single_row("SELECT * FROM " . prefix('menu') . " WHERE menuset = " . db_quote($menuset) . " AND id = " . $id);
    return $result;
}

/**
 * Checks which menu set is chosen via $_GET. If none is explicity chosen the "default" one (create initially) is used.
 *
 * @return string
 */
function checkChosenMenuset($default = 'default') {
    if (isset($_GET['menuset'])) {
        $menuset = sanitize($_GET['menuset']);
    } else if (isset($_POST['menuset'])) {
        $menuset = sanitize($_POST['menuset']);
    } else {
        $menuset = $default;
    }
    return $menuset;
}

/**
 * Checks if the menu item is set visible or not
 *
 * @return string
 */
function checkChosenItemStatus() {
    if (isset($_GET['visible'])) {
        return sanitize($_GET['visible']);
    } else {
        return 'all';
    }
}

/**
 * Gets the title, url and name of a menu item
 *
 * @return array
 */
function getItemTitleAndURL($item) {
    global $_zp_gallery;
    $themename = $_zp_gallery->getCurrentTheme();
    $array = array(
            "title" => '', 
            "url" => '', 
            "name" => '', 
            'protected' => false, 
            'theme' => $themename);
    $valid = true;
    $title = get_language_string($item['title']);
    switch ($item['type']) {
        case 'homepage':
            $array = array(
                    "title" => get_language_string($item['title']), 
                    "url" => WEBPATH, 
                    "name" => WEBPATH, 
                    'protected' => false, 
                    'theme' => $themename);
            break;
        case "galleryindex":
            $array = array(
                    "title" => get_language_string($item['title']), 
                    "url" => getGalleryIndexURL(), 
                    "name" => WEBPATH, 
                    'protected' => false, 
                    'theme' => $themename);
            break;
        case "album":
            $folderFS = internalToFilesystem($item['link']);
            $localpath = ALBUM_FOLDER_SERVERPATH . $folderFS;
            $dynamic = hasDynamicAlbumSuffix($folderFS) && !is_dir($folderFS);
            $valid = file_exists($localpath) && ($dynamic || is_dir($localpath));
            if (!$valid || strpos($localpath, '..') !== false) {
                $valid = false;
                $url = '';
                $protected = 0;
            } else {
                $obj = newAlbum($item['link']);
                $url = $obj->getLink(0);
                $protected = $obj->isProtected();
                $title = $obj->getTitle();
            }
            $array = array(
                    "title" => $title, 
                    "url" => $url, 
                    "name" => $item['link'], 
                    'protected' => $protected, 
                    'theme' => $themename);
            break;
        case "zenpagepage":
            if(class_exists('zenpage')) {
                $sql = 'SELECT * FROM ' . prefix('pages') . ' WHERE `titlelink`="' . $item['link'] . '"';
                $result = query_single_row($sql);
                if (is_array($result)) {
                    $obj = new ZenpagePage($item['link']);
                    $url = $obj->getLink(0);
                    $protected = $obj->isProtected();
                    $title = $obj->getTitle();
                } else {
                    $valid = false;
                    $url = '';
                    $protected = 0;
                }
                $array = array(
                        "title" => $title, 
                        "url" => $url, 
                        "name" => $item['link'], 
                        'protected' => $protected, 
                        'theme' => $themename);
            }
            break;
        case "zenpagenewsindex":
            if(class_exists('zenpage')) {
                $url = getNewsIndexURL();
                $array = array(
                        "title" => get_language_string($item['title']), 
                        "url" => $url, 
                        "name" => $url, 
                        'protected' => false);
            }
            break;
        case "zenpagecategory":
            if(class_exists('zenpage')) {
                $sql = "SELECT title FROM " . prefix('news_categories') . " WHERE titlelink = '" . $item['link'] . "'";
                $obj = query_single_row($sql, false);
                if ($obj) {
                    $obj = new ZenpageCategory($item['link']);
                    $title = $obj->getTitle();
                    $protected = $obj->isProtected();
                    $url = $obj->getLink(0);
                } else {
                    $valid = false;
                    $url = '';
                    $protected = 0;
                }
                $array = array(
                        "title" => $title, 
                        "url" => $url, 
                        "name" => $item['link'], 
                        'protected' => $protected, 
                        'theme' => $themename);
            }
            break;
        case "custompage":
            $root = SERVERPATH . '/' . THEMEFOLDER . '/' . $themename . '/';
            if (file_exists($root . $item['link'] . '.php')) {
                $url = getCustomPageURL($item['link']);
            } else {
                $valid = false;
                $url = '';
            }
            $array = array(
                    "title" => $title, 
                    "url" => $url, 
                    "name" => $item['link'], 
                    'protected' => false, 
                    'theme' => $themename);
            break;
        case "customlink":
            $array = array(
                    "title" => get_language_string($item['title']), 
                    "url" => $item['link'], 
                    "name" => $item['link'], 
                    'protected' => false, 
                    'theme' => $themename);
            break;
        case 'menulabel':
            $array = array(
                    "title" => get_language_string($item['title']), 
                    "url" => NULL, 
                    'name' => $item['title'], 
                    'protected' => false, 
                    'theme' => $themename);
            break;
        default:
            $array = array(
                    "title" => get_language_string($item['title']), 
                    "url" => $item['link'], 
                    "name" => $item['link'], 
                    'protected' => false, 
                    'theme' => $themename);
            break;
    }
    $limit = MENU_TRUNCATE_STRING;
    $array['valid'] = $valid;
    if ($limit) {
        $array['title'] = shortenContent($array['title'], $limit, MENU_TRUNCATE_INDICATOR);
    }
    return $array;
}

/* * *****************
 * Theme functions
 * ***************** */

/**
 * Gets the menu visibility
 * @return string
 */
function getMenuVisibility() {
    if (zp_loggedin(VIEW_ALL_RIGHTS)) {
        return "all";
    } else {
        return "visible";
    }
}

/**
 * "invents" a menu item for the current page (for when one does not exist)
 * Adds the item to the current menuset and modifies its "parent" as needed
 *
 * returns a contrived sort_order for the item.
 *
 * @param string $menuset
 * @param string $visibility
 * @param string $field The field of the array item to get, "all" for the full item array, "key" for the array index of the item within the items array (old default value)
 * @return int|array|string
 */
function inventMenuItem($menuset, $visibility, $field = 'sort_order') {
    global $_zp_gallery_page, $_zp_current_album, $_zp_current_image, $_zp_current_search, $_menu_manager_items,
    $_zp_current_zenpage_news, $_zp_current_zenpage_page;
    $currentkey = $insertpoint = NULL;
    $newitems = array();
    switch ($_zp_gallery_page) {
        case 'image.php':
            $name = '';
            if (in_context(ZP_SEARCH_LINKED) && !in_context(ZP_ALBUM_LINKED)) {
                $dynamic = $_zp_current_search->getDynamicAlbum();
                if (empty($dynamic)) { //   smple search
                    foreach ($_menu_manager_items[$menuset][$visibility] as $key => $item) {
                        if ($item['type'] == 'custompage' && $item['link'] == 'search') {
                            $insertpoint = $item['sort_order'];
                            $currentkey = $insertpoint . '-9999';
                            break;
                        }
                    }
                }
            } else {
                $name = $_zp_current_album->name;
            }
            if (!empty($name)) {
                foreach ($_menu_manager_items[$menuset][$visibility] as $key => $item) {
                    if ($item['type'] == 'album' && $item['title'] == $name) {
                        $insertpoint = $item['sort_order'];
                        $currentkey = $insertpoint . '-9999';
                        break;
                    }
                }
            }
            if (!empty($currentkey)) {
                $item = array(
                        'id' => 9999,
                        'sort_order' => $currentkey,
                        'parentid' => $item['id'],
                        'type' => 'image',
                        'include_li' => true,
                        'title' => $_zp_current_image->getTitle(),
                        'show' => 1,
                        'link' => '',
                        'menuset' => $menuset,
                        'span_class' => '',
                        'span_id' => '');
            }
            break;
        case 'news.php':
            if (in_context(ZP_SEARCH_LINKED)) {
                foreach ($_menu_manager_items[$menuset][$visibility] as $key => $item) {
                    if ($item['type'] == 'custompage' && $item['link'] == 'search') {
                        $insertpoint = $item['sort_order'];
                        $currentkey = $insertpoint . '-9999';
                        break;
                    }
                }
            } else {
                foreach ($_menu_manager_items[$menuset][$visibility] as $key => $item) {
                    if ($item['type'] == 'zenpagenewsindex') {
                        $insertpoint = $item['sort_order'];
                        $currentkey = $insertpoint . '-9999';
                        break;
                    }
                }
            }
            if (!empty($currentkey)) {
                if (is_NewsArticle()) {
                    $item = array(
                            'id' => 9999,
                            'sort_order' => $currentkey,
                            'parentid' => $item['id'],
                            'type' => 'zenpagenews',
                            'include_li' => true,
                            'title' => $_zp_current_zenpage_news->getTitle(),
                            'show' => 1,
                            'link' => '',
                            'menuset' => $menuset,
                            'span_class' => '',
                            'span_id' => '');
                } else {
                    $currentkey = false; // not a news page, must be the index?
                }
            }
            break;
        case 'pages.php':
            if (in_context(ZP_SEARCH_LINKED)) {
                foreach ($_menu_manager_items[$menuset][$visibility] as $key => $item) {
                    if ($item['type'] == 'custompage' && $item['link'] == 'search') {
                        $insertpoint = $item['sort_order'];
                        $currentkey = $insertpoint . '-9999';
                        $item = array(
                                'id' => 9999,
                                'sort_order' => $currentkey,
                                'parentid' => $item['id'],
                                'type' => 'zenpagepage',
                                'include_li' => true,
                                'title' => $_zp_current_zenpage_page->getTitle(),
                                'show' => 1,
                                'link' => '',
                                'menuset' => $menuset,
                                'span_class' => '',
                                'span_id' => '');
                        break;
                    }
                }
            }
            break;
    }
    if (!empty($currentkey)) {
        foreach ($_menu_manager_items[$menuset][$visibility] as $key => $olditem) {
            $newitems[$key] = $olditem;
            if ($olditem['sort_order'] == $insertpoint) {
                $newitems[$currentkey] = $item;
            }
        }
        $_menu_manager_items[$menuset][$visibility] = $newitems;
        switch ($field) {
            default://individual field
                if (isset($item[$field])) {
                    return $item[$field];
                }
                break;
            case 'all':
                if (isset($item)) {
                    return $item;
                }
                break;
            case "key":
                return $currentkey;
        }
    }
}

/**
 * Returns the data of the current menu item
 * 
 * @since 1.5.7 Return values changed to match function name and doc, parameter $field added to help
 * @param string $menuset current menu set
 * @param string $field The field of the array item to get, "all" for the full item array, "key" for the array index of the item within the items array (old default value)
 * @return int|array|string
 */
function getCurrentMenuItem($menuset, $field = 'sort_order') {
    $currentpageURL = rtrim(str_replace('\\', '/', html_encode(getRequestURI())), '/');
    if (isset($_GET['page'])) { // must strip out page numbers, all "pages" are equal
        if (MOD_REWRITE) {
            if (isset($_GET['album'])) {
                $target = '/' . _PAGE_ . '/' . sanitize($_GET['page']);
            } else {
                $target = '/' . sanitize($_GET['page']);
            }
            $i = strrpos($currentpageURL, $target);
            if ($i == (strlen($currentpageURL) - strlen($target))) {
                $currentpageURL = substr($currentpageURL, 0, $i);
            }
        } else {
            $target = '&amp;page=' . sanitize($_GET['page']);
            $i = strpos($currentpageURL, $target);
            if ($i !== false) {
                $currentpageURL = substr($currentpageURL, 0, $i) . substr($currentpageURL, $i + strlen($target));
            }
        }
    }
    $visibility = 'all';
    $items = getMenuItems($menuset, $visibility);
    $currentkey = NULL;
    foreach ($items as $key => $item) {
        switch ($item['type']) {
            case 'menulabel':
            case 'menufunction':
            case 'html':
                break;
            default:
                $checkitem = getItemTitleAndURL($item);
                if ($currentpageURL == html_encode(rtrim($checkitem['url'], '/'))) {
                    $currentkey = $key;
                    break 2;
                }
                break;
        }
    }
    $inventeditem = false;
    if (is_null($currentkey)) {
        $inventeditem = inventMenuItem($menuset, $visibility, 'all');
    }
    switch ($field) {
        default://individual field
            if($inventeditem) {
                if (isset($inventeditem[$field])) {
                    return $inventeditem[$field];
                }
            } else if (isset($items[$currentkey][$field])) {
                return $items[$currentkey][$field];
            }
            break;
        case 'all':
            if ($inventeditem) {
                return $inventeditem;
            } else if (isset($items[$currentkey])) {
                return $items[$currentkey];
            }
            break;
        case "key":
            return $currentkey;
    }
}

/**
 * Returns the link to the predicessor of the current menu item
 * @param string $menuset current menu set
 * @return string
 */
function getMenumanagerPredicessor($menuset = 'default') {
    $sortorder = getCurrentMenuItem($menuset);
    $items = getMenuItems($menuset, getMenuVisibility());
    if (count($items) == 0)
        return NULL;
    if (empty($sortorder))
        return NULL;
    $order = explode('-', $sortorder);
    $next = array_pop($order) - 1;
    $saveorder = $order;
    while ($next >= 0) {
        $order = $saveorder;
        array_push($order, sprintf('%03u', $next));
        $sortorder = implode('-', $order);
        if (array_key_exists($sortorder, $items) && $items[$sortorder]['type'] != 'menulabel') { // omit the menulabels
            return getItemTitleAndURL($items[$sortorder]);
        }
        $next--;
    }
    return NULL;
}

/**
 * Prints the previous link of the current menu item
 * @param string  $text
 * @param string  $menuset
 * @param string  $title
 * @param string  $class
 * @param string  $id
 */
function printMenumanagerPrevLink($text, $menuset = 'default', $title = NULL, $class = NULL, $id = NULL) {
    $itemarray = getMenumanagerPredicessor($menuset);
    if (is_array($itemarray)) {
        if (is_null($title))
            $title = $itemarray['title'];
        printLinkHTML($itemarray['url'], $text, $title, $class, $id);
    } else {
        echo '<span class="disabledlink">' . html_encode($text) . '</span>';
    }
}

/**
 * Returns the successor link of the current menu item
 * @param string $menuset
 * @return string
 */
function getMenumanagerSuccessor($menuset = 'default') {
    $sortorder = getCurrentMenuItem($menuset);
    $items = getMenuItems($menuset, getMenuVisibility());
    if (count($items) == 0)
        return NULL;
    if (empty($sortorder))
        return NULL;
    $order = explode('-', $sortorder);
    $next = array_pop($order) + 1;
    $short_order = $order;
    array_push($order, sprintf('%03u', $next));
    $sortorder = implode('-', $order);
    while ($next <= 999) {
        $order = $short_order;
        array_push($order, sprintf('%03u', $next));
        $sortorder = implode('-', $order);
        if (array_key_exists($sortorder, $items)) {
            if ($items[$sortorder]['type'] != 'menulabel') { // omit the menulabels
                return getItemTitleAndURL($items[$sortorder]);
            }
        }
        $next++;
    }
    return NULL;
}

/**
 * Gets the link to the next menu item
 * @param string $text
 * @param string $menuset current menu set
 * @param string $title
 * @param string $class
 * @param string $id
 */
function printMenumanagerNextLink($text, $menuset = 'default', $title = NULL, $class = NULL, $id = NULL) {
    $itemarray = getMenumanagerSuccessor($menuset);
    if (is_array($itemarray)) {
        if (is_null($title))
            $title = $itemarray['title'];
        printLinkHTML($itemarray['url'], $text, $title, $class, $id);
    } else {
        echo '<span class="disabledlink">' . html_encode($text) . '</span>';
    }
}

/**
 * Prints a list of all pages.
 *
 * @param string $prevtext Insert here the linktext like 'previous page'
 * @param string $menuset current menu set
 * @param string $menuset current menu set
 * @param string $class the css class to use, "pagelist" by default
 * @param string $nextprev set to true to get the 'next' and 'prev' links printed
 * @param string $id the css id to use
 * @param bool $firstlast Add links to the first and last pages of you gallery
 * @param int $navlen Number of navigation links to show (0 for all pages). Works best if the number is odd.
 */
function printMenuemanagerPageListWithNav($prevtext, $nexttext, $menuset = 'default', $class = 'pagelist', $nextprev = true, $id = NULL, $firstlast = true, $navlen = 9) {
    $currentitem = getMenuFromLink(html_encode(urldecode(getRequestURI())), $menuset);
    if (is_null($currentitem))
        return; // we are not in menuset
    $orders = explode('-', $currentitem['sort_order']);
    array_pop($orders);
    $lookfor = implode('-', $orders) . '-';
    $sql = 'SELECT `sort_order` FROM ' . prefix('menu') . ' WHERE `sort_order` LIKE "' . $lookfor . '%" ORDER BY `sort_order` ASC';
    $result = query_full_array($sql, false, 'sort_order');
    if (is_array($result)) {
        $l = strlen($lookfor) + 3;
        foreach ($result as $key => $item) { // discard next level items
            if (strlen($key) > $l)
                unset($result[$key]);
        }
        $itemlist = array_keys($result);
        $total = count($itemlist);
        $current = array_search($currentitem['sort_order'], $itemlist) + 1;
        if ($total < 2) {
            $class .= ' disabled_nav';
        }
        if ($navlen == 0)
            $navlen = $total;
        $extralinks = 2;
        if ($firstlast)
            $extralinks = $extralinks + 2;
        $len = floor(($navlen - $extralinks) / 2);
        $j = max(round($extralinks / 2), min($current - $len - (2 - round($extralinks / 2)), $total - $navlen + $extralinks - 1));
        $ilim = min($total, max($navlen - round($extralinks / 2), $current + floor($len)));
        $k1 = round(($j - 2) / 2) + 1;
        $k2 = $total - round(($total - $ilim) / 2);
        $items = getMenuItems($menuset, getMenuVisibility());
        echo "<div" . (($id) ? " id=\"$id\"" : "") . " class=\"$class\">\n";
        echo "<ul class=\"$class\">\n";
        if ($nextprev) {
            echo "<li class=\"prev\">";
            printMenumanagerPrevLink($prevtext, $menuset, $prevtext, gettext("Previous Page"));
            echo "</li>\n";
        }
        if ($firstlast) {
            echo '<li class="' . ($current == 1 ? 'current' : 'first') . '">';
            $itemarray = getItemTitleAndURL($items[$itemlist[0]]);
            printLinkHTML($itemarray['url'], 1, gettext("Page 1"));
            echo "</li>\n";
            if ($j > 2) {
                echo "<li>";
                $itemarray = getItemTitleAndURL($items[$itemlist[$k1 - 1]]);
                printLinkHTML($itemarray['url'], ($j - 1 > 2) ? '...' : $k1, sprintf(ngettext('Page %u', 'Page %u', $k1), $k1));
                echo "</li>\n";
            }
        }
        for ($i = $j; $i <= $ilim; $i++) {
            echo "<li" . (($i == $current) ? " class=\"current\"" : "") . ">";
            $itemarray = getItemTitleAndURL($items[$itemlist[$i - 1]]);
            if ($i == $current) {
                $title = sprintf(ngettext('Page %1$u (Current Page)', 'Page %1$u (Current Page)', $i), $i);
            } else {
                $title = sprintf(ngettext('Page %1$u', 'Page %1$u', $i), $i);
            }
            printLinkHTML($itemarray['url'], $i, $title);
            echo "</li>\n";
        }
        if ($i < $total) {
            echo "<li>";
            $itemarray = getItemTitleAndURL($items[$itemlist[$k2 - 1]]);
            printLinkHTML($itemarray['url'], ($total - $i > 1) ? '...' : $k2, sprintf(ngettext('Page %u', 'Page %u', $k2), $k2));
            echo "</li>\n";
        }
        if ($firstlast && $i <= $total) {
            echo "\n  <li class=\"last\">";
            $itemarray = getItemTitleAndURL($items[$itemlist[$total - 1]]);
            printLinkHTML($itemarray['url'], $total, sprintf(ngettext('Page {%u}', 'Page {%u}', $total), $total));
            echo "</li>";
        }
        if ($nextprev) {
            echo "<li class=\"next\">";
            printMenumanagerNextLink($nexttext, gettext("Next Page"));
            echo "</li>\n";
        }
        echo "</ul>\n";
        echo "</div>\n";
    }
}

/**
 * Prints a full page navigation including previous and next page links with a list of all pages in between.
 *
 * @param string $nexttext Insert here the linktext like 'next page'
 * @param string $class Insert here the CSS-class name you want to style the link with (default is "pagelist")
 * @param string $id Insert here the CSS-ID name if you want to style the link with this
 * @param bool $firstlast Add links to the first and last pages of you gallery
 * @param int $navlen Number of navigation links to show (0 for all pages). Works best if the number is odd.
 */
function printMenuemanagerPageList($menuset = 'default', $class = 'pagelist', $id = NULL, $firstlast = true, $navlen = 9) {
    printMenuemanagerPageListWithNav(null, null, $menuset, false, $class, $id, false, $navlen);
}

/**
 * Gets the parent menu items of the current menu item. Returns the array of the items or false.
 * @param string $menuset current menu set
 * @return array|false
 */
function getParentMenuItems($menuset = 'default') {
    $currentitem = getCurrentMenuItem($menuset, 'all');
    $items = getMenuItems($menuset, getMenuVisibility());
    if (count($items) > 0) {
        if ($currentitem) {
            $sortorder = $currentitem['sort_order'];
            $parents = array();
            $currentorder = explode('-', $sortorder);
            foreach($items as $item) {
                $itemorder = explode('-', $item['sort_order']);
                if($itemorder[0] == $currentorder[0] && $item['id'] != $currentitem['id'] && $currentitem['parentid'] != 0) {
                    $parents[] = $item;
                }
            }
            if (!empty($parents)) {
                sortMultiArray($parents, 'sort_order', $descending = false, $natsort = false, $case_sensitive = false);
                return $parents;
            }
        }
    }
    return false;
}

/**
 * Prints the breadcrumbs of the current page
 *
 * NOTE: this function is entirely dependedn on the menu tree you have
 * generated. It will work only with static menu trees. That is, if the page
 * upon which you call this function is not present in your menu tree it will
 * not have any parent pages. Thus, menu items generated for instance by function
 * calls cannot have parents in the printMenumanagerBreadcrumb sense.
 *
 * Likewise if you have non exclusive menu links to a page the parentage of that
 * page with respect to breadcrumbs may not reflect on the menu transitions that
 * the user used to arrive on the page.
 *
 * @param string $menuset current menu set
 * @param string $before before text
 * @param string $between between text
 * @param string $after after text
 */
function printMenumanagerBreadcrumb($menuset = 'default', $before = '', $between = ' | ', $after = ' | ') {
    $parents = getParentMenuItems($menuset);
    if ($parents) {
        if ($before) {
            echo '<span class="beforetext">' . html_encode($before) . '</span>';
        }
        if ($between) {
            $between = '<span class="betweentext">' . html_encode($between) . '</span>';
        }
        $i = 0;
        foreach ($parents as $item) {
            if ($i > 0) {
                echo $between;
            }
            $itemarray = getItemTitleAndURL($item);
            if ($item['type'] == 'menulabel') {
                echo html_encode($itemarray['title']);
            } else {
                printLinkHTML($itemarray['url'], $itemarray['title'], $itemarray['title']);
            }
            $i++;
        }
        if ($after) {
            echo '<span class="aftertext">' . html_encode($after) . '</span>';
        }
    }
}

/**
 * Returns the menu item corresponding to $link
 * @param string $link
 * @param string $menuset
 * @return array
 */
function getMenuFromLink($link, $menuset = 'default') {
    $link = rtrim(str_replace('\\', '/', $link), '/');
    $items = getMenuItems($menuset, getMenuVisibility());
    foreach ($items as $item) {
        $itemarray = getItemTitleAndURL($item);
        if ($itemarray['url'] == $link)
            return $item;
    }
    return NULL;
}

/**
 * Returns true if the current menu item is a sub item of $link
 * @param string $link possible parent
 * @param string $menuset current menuset
 * @return bool
 */
function submenuOf($link, $menuset = 'default') {
    $link_menu = getMenuFromLink($link, $menuset);
    if (is_array($link_menu)) {
        $current = getCurrentMenuItem($menuset);
        $items = getMenuItems($menuset, getMenuVisibility());
        if (!is_null($current)) {
            $sortorder = $link_menu['sort_order'];
            if (strlen($current) > strlen($sortorder)) {
                $p = strpos($current, $sortorder);
                return $p === 0;
            }
        }
    }
    return false;
}

/**
 * Creates a menu set from the items passed. But only if the menu set does not already exist
 * @param array $menuitems items for the menuset
 *      array elements:
 *          'type'=>menuset type
 *          'title'=>title for the menu item
 *          'link'=>URL or other data for the item link
 *          'show'=>set to 1:"visible" or 0:"hidden",
 *          'nesting'=>nesting level of this item in the menu heirarchy
 *
 * @param string $menuset current menuset
 */
function createMenuIfNotExists($menuitems, $menuset = 'default') {
    $count = db_count('menu', 'WHERE menuset=' . db_quote($menuset));
    if ($count == 0) { // there was not an existing menu set
        require_once(dirname(__FILE__) . '/menu_manager/menu_manager-admin-functions.php');
        $success = 1;
        $orders = array();
        foreach ($menuitems as $key => $result) {
            if (array_key_exists('nesting', $result)) {
                $nesting = $result['nesting'];
            } else {
                $nesting = 0;
            }
            while ($nesting + 1 < count($orders))
                array_pop($orders);
            while ($nesting + 1 > count($orders))
                array_push($orders, -1);
            $result['id'] = 0;
            if (isset($result['include_li'])) {
                $includeli = $result['include_li'];
            } else {
                $includeli = 1;
            }
            $type = $result['type'];
            switch ($type) {
                case 'all_items':
                    $orders[$nesting] ++;
                    query("INSERT INTO " . prefix('menu') . " (`title`,`link`,`type`,`show`,`menuset`,`sort_order`) " .
                                    "VALUES ('" . gettext('Home') . "', '" . WEBPATH . '/' . "','galleryindex','1'," . db_quote($menuset) . ',' . db_quote($orders), true);
                    $orders[$nesting] = addAlbumsToDatabase($menuset, $orders);
                    if (extensionEnabled('zenpage')) {
                        $orders[$nesting] ++;
                        query("INSERT INTO " . prefix('menu') . " (title`,`link`,`type`,`show`,`menuset`,`sort_order`) " .
                                        "VALUES ('" . gettext('News index') . "', '" . getNewsIndexURL() . "','zenpagenewsindex','1'," . db_quote($menuset) . ',' . db_quote(sprintf('%03u', $base + 1)), true);
                        $orders[$nesting] = addPagesToDatabase($menuset, $orders) + 1;
                        $orders[$nesting] = addCategoriesToDatabase($menuset, $orders);
                    }
                    $type = false;
                    break;
                case 'all_albums':
                    $orders[$nesting] ++;
                    $orders[$nesting] = addAlbumsToDatabase($menuset, $orders);
                    $type = false;
                    break;
                case 'all_zenpagepages':
                    $orders[$nesting] ++;
                    $orders[$nesting] = addPagesToDatabase($menuset, $orders);
                    $type = false;
                    break;
                case 'all_zenpagecategorys':
                    $orders[$nesting] ++;
                    $orders[$nesting] = addCategoriesToDatabase($menuset, $orders);
                    $type = false;
                    break;
                case 'album':
                    $result['title'] = NULL;
                    if (empty($result['link'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty link.'), $key));
                    }
                    break;
                case 'homepage':
                    $result['link'] = NULL;
                    if (empty($result['title'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty title.'), $key));
                    }
                    break;
                case 'galleryindex':
                    $result['link'] = NULL;
                    if (empty($result['title'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty title.'), $key));
                    }
                    break;
                case 'zenpagepage':
                    $result['title'] = NULL;
                    if (empty($result['link'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty link.'), $key));
                    }
                    break;
                case 'zenpagenewsindex':
                    $result['link'] = NULL;
                    if (empty($result['title'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty title.'), $key));
                    }
                    break;
                case 'zenpagecategory':
                    $result['title'] = NULL;
                    if (empty($result['link'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty link.'), $key));
                    }
                    break;
                case 'custompage':
                    if (empty($result['title']) || empty($result['link'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty title or link.'), $key));
                    }
                    break;
                case 'customlink':
                    if (empty($result['title'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty title.'), $key));
                    } else if (empty($result['link'])) {
                        $result['link'] = seoFriendly(get_language_string($result['title']));
                    }
                    break;
                case 'menulabel':
                    if (empty($result['title'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty title.'), $key));
                    }
                    $result['link'] = sha1($result['title']);
                    break;
                case 'menufunction':
                    if (empty($result['title']) || empty($result['link'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty title or link.'), $key));
                    }
                    break;
                case 'html':
                    if (empty($result['title']) || empty($result['link'])) {
                        $success = -1;
                        debugLog(sprintf(gettext('createMenuIfNotExists item %s has an empty title or link.'), $key));
                    }
                    break;
                default:
                    $success = -1;
                    debugLog(sprintf(gettext('createMenuIfNotExists item %s has an invalid type.'), $key));
                    break;
            }
            if ($success > 0 && $type) {
                $orders[$nesting] ++;
                $sort_order = '';
                for ($i = 0; $i < count($orders); $i++) {
                    $sort_order .= sprintf('%03u', $orders[$i]) . '-';
                }
                $sort_order = substr($sort_order, 0, -1);
                $sql = "INSERT INTO " . prefix('menu') . " (`title`,`link`,`type`,`show`,`menuset`,`sort_order`,`include_li`) " .
                                "VALUES (" . db_quote($result['title']) .
                                ", " . db_quote($result['link']) .
                                "," . db_quote($result['type']) . "," . $result['show'] .
                                "," . db_quote($menuset) . "," . db_quote($sort_order) . ",$includeli)";
                if (!query($sql, false)) {
                    $success = -2;
                    debugLog(sprintf(gettext('createMenuIfNotExists item %1$s query (%2$s) failed: %3$s.'), $key, $sql, db_error()));
                }
            }
        }
    } else {
        $success = 0;
    }
    if ($success < 0) {
        trigger_error(gettext('createMenuIfNotExists has posted processing errors to your debug log.'), E_USER_NOTICE);
    }
    return $success;
}

/**
 * Gets the direct child menu items of the current menu item. Returns the array of the items or false.
 * @param string $menuset current menu set
 * @param bool $allchilds Set to false (default) for the next level childs, true for childs of all further levels
 * @return array|false
 */
function getMenuItemChilds($menuset = 'default', $allchilds = false) {
  $sortorder = getCurrentMenuItem($menuset);
  $items = getMenuItems($menuset, getMenuVisibility());
  if (count($items) > 0) {
    if ($sortorder) { 
      $length = strlen($sortorder);
      $level = explode('-', $sortorder);
      $level = count($level);
      $childs = array();
      foreach ($items as $item) {
        $itemlevel = explode('-', $item['sort_order']);
        $itemlevel = count($itemlevel);
        if ($allchilds) {
          $is_validchild = true;
        } else {
          if ($itemlevel == $level + 1) {
            $is_validchild = true;
          } else {
            $is_validchild = false;
          }
        }
        if (substr($item['sort_order'], 0, $length) == $sortorder && $item['sort_order'] != $sortorder && $is_validchild) {
          array_push($childs, $item);
        }
      }
      if (!empty($childs)) {
        return $childs;
      }
    }
  }
  return false;
}

/**
 * Checks if the item $item is a parent item of the current item
 * @param string $menuset Name of the menuset to use
 * @param array $item Array of the item to check
 * @return boolean
 */
function isCurrentitemParent($menuset = 'default', $item) {
    $currentid = getCurrentMenuItem($menuset, 'id');
    $allparents = getParentMenuItems($menuset);
    foreach($allparents as $parent) {
        if($item['id'] != $currentid && $parent['id'] == $item['id']) {
            return true;
        }
        return false;
    } 
    
}

/**
 * Prints a context sensitive menu of all pages as a unordered html list
 *
 * @param string $menuset the menu tree to output
 * @param string $option The mode for the menu:
 *                                              "list" context sensitive toplevel plus sublevel pages,
 *                                              "list-top" only top level pages,
 *                                              "omit-top" only sub level pages
 *                                              "list-sub" lists only the current pages direct offspring
 * @param string $css_id CSS id of the top level list
 * @param string $css_class_topactive class of the active item in the top level list
 * @param string $css_class CSS class of the sub level list(s)
 * @param string $css_class_active CSS class of the sub level list(s)
 * @param int $showsubs Set to depth of sublevels that should be shown always. 0 by default. To show all, set to a true! Only valid if option=="list".
 * @param bool $counter TRUE (FALSE default) if you want the count of articles for Zenpage news categories or images/subalbums for albums.

 * @return string
 */
function printCustomMenu($menuset = 'default', $option = 'list', $css_id = '', $css_class_topactive = '', $css_class = '', $css_class_active = '', $showsubs = 0, $counter = false) {
    global $_zp_zenpage, $_zp_gallery_page, $_zp_current_zenpage_page, $_zp_current_category;
    $itemcounter = '';
    if ($css_id != "") {
        $css_id = " id='" . $css_id . "'";
    }
    if ($showsubs === true)
        $showsubs = 9999999999;

    $currentitem = getCurrentMenuItem($menuset, 'all');
    $sortorder = '';
    $currentitem_parentid = '';
    $pageid = '';
    if(is_array($currentitem)) {
        $sortorder = $currentitem['sort_order'];
        $currentitem_parentid = $currentitem['parentid'];
        $pageid = $currentitem['id'];
    }
    $items = getMenuItems($menuset, getMenuVisibility());
    if (count($items) == 0)
        return; // nothing to do
    
    if ($startlist = !($option == 'omit-top' || $option == 'list-sub')) {
        echo "<ul$css_id>";
    }
    $baseindent = max(1, count(explode("-", $sortorder)));
    $indent = 1;
    $open = array($indent => 0);
    $parents = array(NULL);
    $order = explode('-', $sortorder);
    $mylevel = count($order);
    $myparentsort = array_shift($order);

    for ($c = 0; $c <= $mylevel; $c++) {
        $parents[$c] = NULL;
    }
    foreach ($items as $item) {
        $itemarray = getItemTitleAndURL($item);
        $itemURL = $itemarray['url'];
        $itemtitle = $itemarray['title'];
        $level = max(1, count(explode('-', $item['sort_order'])));
        $process = (($level <= $showsubs && $option == "list") // user wants all the pages whose level is <= to the parameter
                        || ($option == 'list' || $option == 'list-top') && $level == 1 // show the top level
                        || (($option == 'list' || ($option == 'omit-top' && $level > 1)) && (($item['id'] == $pageid) // current page
                        || ($item['parentid'] == $pageid) // offspring of current page
                        || ($level < $mylevel && $level > 1 && strpos($item['sort_order'], $myparentsort) === 0)) // direct ancestor
                        || (($level == $mylevel) && ($currentitem_parentid == $item['parentid'])) // sibling
                        ) || ($option == 'list-sub' && ($item['parentid'] == $pageid) // offspring of the current page
                        )
                        );
        if ($process) {
            if ($level > $indent) {
                echo "\n" . str_pad("\t", $indent, "\t") . "<ul class=\"$css_class menu_{$item['type']}\">\n";
                $indent++;
                $parents[$indent] = NULL;
                $open[$indent] = 0;
            } else if ($level < $indent) {
                $parents[$indent] = NULL;
                while ($indent > $level) {
                    if ($open[$indent]) {
                        $open[$indent] --;
                        echo "</li>\n";
                    }
                    $indent--;
                    echo str_pad("\t", $indent, "\t") . "</ul>\n";
                }
            } else { // level == indent, have not changed
                if ($open[$indent]) { // level = indent
                    echo str_pad("\t", $indent, "\t") . "</li>\n";
                    $open[$indent] --;
                } else {
                    echo "\n";
                }
            }

            if ($open[$indent]) { // close an open LI if it exists
                echo "</li>\n";
                $open[$indent] --;
            }

            echo str_pad("\t", $indent - 1, "\t");
            $open[$indent] += $item['include_li'];
            $parents[$indent] = $item['id'];
            if ($counter) {
                switch ($item['type']) {
                    case'album':
                        $albumobj = newAlbum($item['link']);
                        $numimages = $albumobj->getNumImages();
                        $numsubalbums = $albumobj->getNumAlbums();
                        $itemcounter = ' <span style="white-space:nowrap;"><small>(';
                        if ($numsubalbums != 0) {
                            $itemcounter .= sprintf(ngettext('%u album', '%u albums', $numsubalbums), $numsubalbums);
                        }
                        if ($numimages != 0) {
                            if ($numsubalbums != 0) {
                                $itemcounter .= ' ';
                            }
                            $itemcounter .= sprintf(ngettext('%u image', '%u images', $numimages), $numimages);
                        }
                        $itemcounter .= ')</small></span>';

                        break;
                    case'zenpagecategory':
                        if ((zp_loggedin(ZENPAGE_NEWS_RIGHTS | ALL_NEWS_RIGHTS))) {
                            $published = "all";
                        } else {
                            $published = "published";
                        }
                        $catobj = new ZenpageCategory($item['link']);
                        $catcount = count($catobj->getArticles(0, $published));
                        $itemcounter = "<small> (" . $catcount . ")</small>";
                        break;
                }
            }
            if ($item['id'] == $pageid && !is_null($pageid)) {
                if ($level == 1) { // top level
                    $class = ' ' . $css_class_topactive;
                } else {
                    $class = ' ' . $css_class_active .'-' . $level;
                }
                echo '<li class="menu_' . trim($item['type'] . ' ' . $class) . '">' . $itemtitle . $itemcounter;
            } else {
                if (strpos($sortorder, $item['sort_order']) === 0) { // we are in the heritage chain
                    if ($level == 1) { // top level
                        $class = ' ' . $css_class_topactive;
                    } else {
                        $class = ' ' . $css_class_active .'-' . $level;
                    }
                } else {
                    $class = '';
                }
                if ($item['include_li']) {
                    echo '<li class="menu_' . $item['type'] . $class . '">';
                }
                if ($item['span_id'] || $item['span_class']) {
                    echo '<span';
                    if ($item['span_id'])
                        echo ' id="' . $item['span_id'] . '"';
                    if ($item['span_class'])
                        echo ' class="' . $item['span_class'] . '"';
                    echo '>';
                }
                switch ($item['type']) {
                    case 'html':
                        echo $item['link'];
                        break;
                    case 'menufunction':
                        $i = strpos($itemURL, '(');
                        if ($i) {
                            if (function_exists(trim(substr($itemURL, 0, $i)))) {
                                eval($itemURL);
                            }
                        }
                        break;
                    case 'menulabel':
                        echo $itemtitle;
                        break;
                    default:
                        if (empty($itemURL)) {
                            $itemURL = FULLWEBPATH;
                        }
                        echo '<a href="' . $itemURL . '" title="' . getBare($itemtitle) . '">' . $itemtitle . '</a>' . $itemcounter;
                        break;
                }
                if ($item['span_id'] || $item['span_class']) {
                    echo '</span>';
                }
            }
        }
    }
    // cleanup any hanging list elements
    while ($indent > 1) {
        if ($open[$indent]) {
            echo "</li>\n";
            $open[$indent] --;
        }
        $indent--;
        echo str_pad("\t", $indent, "\t") . "</ul>";
    }
    if ($open[$indent]) {
        echo "</li>\n";
        $open[$indent] --;
    } else {
        echo "\n";
    }
    if ($startlist) {
        echo "</ul>\n";
    }
}

?>