<?php
// $Id: saveguard.module,v 1.2 2007/11/27 21:30:16 starbow Exp $

/** 
 * @file
 * Warn user when they are leaving a page with unsaved changes.
 *
 * Adds a onBeforeUnload event to all modified forms.
 */

/**
 * Implementation of hook_menu().
 */ 
function saveguard_menu ($may_cache) {
  $items = array();
  
  if ($may_cache) {
    $items[] = array(
      'path' => 'admin/settings/saveguard',
      'title' => t('SaveGuard'),
      'description' => t('Settings for SaveGaurd'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('saveguard_admin_settings'),
      'access' => user_access('administer site configuration'),
     );
  }
  
  return $items;
}

/**
 * Define a settings form.
 */
function saveguard_admin_settings() {
    $form['general'] = array(
      '#type' => 'fieldset',
      '#title' => t('General'),
      '#collapsible' => TRUE,
    );
  


  $form['saveguard_message'] = array(
    '#type' => 'textfield',
    '#title' => t("Popup Message"),
    '#default_value' => variable_get('saveguard_message', NULL),
  );
  
   // visibility match  - added NPW
  visibility_api_form_configuration('saveguard', $form['general']);  
  
  
  return system_settings_form($form);
}


/**
 * Implementation of hook_form_alter().
 * Just add javascript to all forms.
 *
 * @param $form_id
 *    name of the form being acted on
 * @param $form
 *    array with form structure
 */
function saveguard_form_alter ($form_id, &$form) {
  // Visibility show - added NPW
  if (visibility_api_access('saveguard')){
  drupal_add_js(drupal_get_path('module', 'saveguard') .'/saveguard.js'); 
  static $done;
  if (!$done) {
    $settings['saveguard'] = array( 
      'msg' => variable_get('saveguard_message', NULL),
    );
    drupal_add_js($settings, 'setting');
    $done = TRUE;
  }
}
}