i18n_selection_page.module

<?php

define('LANGUAGE_NEGOTIATION_SELECTION_PAGE', 'language-selection-page');
// theme settings - numeric values for D6 upgrade purposes
define('I18N_SELECTION_PAGE_TEMPLATE_IN_THEME', 32);
define('I18N_SELECTION_PAGE_TEMPLATE_ONLY', 64);

/**
 * Implements hook_menu().
 */
function i18n_selection_page_menu() {
  $items = array();

  $items['admin/config/regional/language/configure/selection_page'] = array(
    'title' => 'Language selection page',
    'description' => 'Configure the language selection page behavior',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('i18n_selection_page_admin'),
    'access arguments' => array('administer languages'),
    'file' => 'i18n_selection_page.admin.inc',
    'type' => MENU_VISIBLE_IN_BREADCRUMB
  );

  $items['language_selection'] = array(
    'description' => 'Language selection page',
    'page callback' => 'i18n_selection_page_selection_page',
    'access arguments' => array('access content'),
    'file' => 'i18n_selection_page.pages.inc',
    'type' => MENU_NORMAL_ITEM
  );

  return $items;
}

/**
 * Implements hook_language_negotiation_info().
 *
 * @return array()
 */
function i18n_selection_page_language_negotiation_info() {
  $language_providers[LANGUAGE_NEGOTIATION_SELECTION_PAGE] = array(
    'types' => array(LANGUAGE_TYPE_CONTENT, LANGUAGE_TYPE_INTERFACE, LANGUAGE_TYPE_URL),
    'callbacks' => array(
      'language' => 'i18n_selection_page_language',
      'switcher' => 'locale_language_switcher_url',
      'url_rewrite' => 'locale_language_url_rewrite_url'
    ),
    'file' => drupal_get_path('module', 'i18n_selection_page') . '/i18n_selection_page.module',
    'weight' => 50,
    'name' => t('Selection Page'),
    'description' => t('Show a language selection page to the visitor for making a language choice.'),
    'config' => 'admin/config/regional/language/configure/selection_page'
  );
  return $language_providers;
}

/**
 * Language selection callback method
 */
function i18n_selection_page_language($languages) {
  require_once('./includes/locale.inc');
  require_once('./includes/path.inc');
  require_once('./includes/common.inc');

  $lang = locale_language_from_url($languages);
  if ($lang) {
    return $lang;
  }

  // Don't run this code on the language selection page itself.
  if ($_GET['q'] == 'language_selection') {
    return;
  }

  // Don't run this code if we are on a blacklisted path
  /*
  $blacklist = variable_get('i18n_selection_page_blacklisted_paths', array());
  if ((bool) drupal_match_path($_GET['q'], implode("\r\n", $blacklist))) {
    return;
  }
  */

  // @TODO: document this
  if (!isset($_SERVER['SERVER_ADDR'])) {
    return;
  }

  // redirect to the language selection page, with the currently requested page as destination
  $query = drupal_get_query_parameters();
  $query['destination'] = $_GET['q'] ? $_GET['q'] : '<front>';
  $language = $GLOBALS['language'];
  drupal_goto('language_selection', array('query' => $query, 'absolute' => FALSE, 'language' => LANGUAGE_NONE));
}

/**
 * Implements hook_theme().
 */
function i18n_selection_page_theme() {
  return array(
    'i18n_selection_page' => array(
      'arguments' => array('data' => array()),
      'path' => drupal_get_path('module', 'i18n_selection_page') . '/themes',
      //'file' => '/i18n_selection_page.pages.inc',
      'template' => 'i18n_selection_page'
    ),
    'i18n_selection_page_body' => array(
      'arguments' => array('data' => array()),
      'path' => drupal_get_path('module', 'i18n_selection_page') . '/themes',
      //'file' => 'i18n_selection_page.pages.inc',
      'template' => 'i18n_selection_page_body'
    )
  );
}