<?php

// $Id: help.admin.inc,v 1.5 2007/11/25 11:11:17 goba Exp $

/**

 * @file

 * Admin page callbacks for the help module.

 */

/**

 * Menu callback; prints a page listing a glossary of Drupal terminology.

 */

function help_main() {

  // Add CSS

  drupal_add_css(drupal_get_path('module', 'help') .'/help.css', 'module', 'all', FALSE);

  $output = '<h2>'. t('Help topics') .'</h2><p>'. t('Help is available on the following items:') .'</p>'. help_links_as_list();

  return $output;

}

/**

 * Menu callback; prints a page listing general help for a module.

 */

function help_page($name) {

  $output = '';

  if (module_hook($name, 'help')) {

    $module = drupal_parse_info_file(drupal_get_path('module', $name) .'/'. $name .'.info');

    drupal_set_title($module['name']);

    $temp = module_invoke($name, 'help', "admin/help#$name", drupal_help_arg());

    if (empty($temp)) {

      $output .= t("No help is available for module %module.", array('%module' => $module['name']));

    }

    else {

      $output .= $temp;

    }

    // Only print list of administration pages if the module in question has

    // any such pages associated to it.

    $admin_tasks = system_get_module_admin_tasks($name);

    if (!empty($admin_tasks)) {

      ksort($admin_tasks);

      $output .= theme('item_list', $admin_tasks, t('@module administration pages', array('@module' => $module['name'])));

    }

  }

  return $output;

}

function help_links_as_list() {

  $empty_arg = drupal_help_arg();

  $module_info = module_rebuild_cache();

  $modules = array();

  foreach (module_implements('help', TRUE) as $module) {

    if (module_invoke($module, 'help', "admin/help#$module", $empty_arg)) {

      $modules[$module] = $module_info[$module]->info['name'];

    }

  }

  asort($modules);

  // Output pretty four-column list

  $count = count($modules);

  $break = ceil($count / 4);

  $output = '<div class="clear-block"><div class="help-items"><ul>';

  $i = 0;

  foreach ($modules as $module => $name) {

    $output .= '<li>'. l($name, 'admin/help/'. $module) .'</li>';

    if (($i + 1) % $break == 0 && ($i + 1) != $count) {

      $output .= '</ul></div><div class="help-items'. ($i + 1 == $break * 3 ? ' help-items-last' : '') .'"><ul>';

    }

    $i++;

  }

  $output .= '</ul></div></div>';

  return $output;

}