<?php
// $Id: modalframe_more_help.module,v 1.1.2.1 2010-01-01 20:19:39 markuspetrux Exp $

/**
 * @file
 * Opens the "more help" pages in modal frames.
 */

/**
 * Implementation of hook_theme().
 */
function modalframe_more_help_theme() {
  return array('modalframe_more_help_link' => array('arguments' => array('url' => NULL)));
}

/**
 * Implementation of hook_theme_registry_alter().
 */
function modalframe_more_help_theme_registry_alter(&$theme_registry) {
  // Replace original theme entry with our own.
  variable_set('modalframe_more_help_theme_entry', $theme_registry['more_help_link']);
  $theme_registry['more_help_link'] = $theme_registry['modalframe_more_help_link'];
}

/**
 * Replacement of theme_more_help_link().
 */
function theme_modalframe_more_help_link($url) {
  static $ready;
  if (!isset($ready)) {
    $ready = TRUE;
    modalframe_parent_js();
    drupal_add_js(drupal_get_path('module', 'modalframe_more_help') .'/modalframe_more_help.js');
  }

  // Invoke the original theme function.
  $theme_registry = variable_get('modalframe_more_help_theme_entry', array());
  $function = !empty($theme_registry['function']) && function_exists($theme_registry['function']) ? $theme_registry['function'] : 'theme_more_help_link';
  return $function($url);
}

/**
 * Implementation of hook_init().
 */
function modalframe_more_help_init() {
  if (!empty($_COOKIE['has_js']) && preg_match('`^admin/help/[_a-z0-9]+$`', $_GET['q'])) {
    modalframe_child_js();
  }
}