first import

sites/all/modules/i18n/i18n_variable/i18n_variable.class.inc

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+<?php
+/**
+ * @file
+ * Variable Realm controller.
+ */
+
+/**
+ * Controller for Language realms.
+ */
+class I18nVariableLanguageRealm extends VariableRealmDefaultController {
+  /**
+   * Implementation of VariableRealmControllerInterface::getAvailableVariables().
+   */
+  public function getAvailableVariables() {
+    $translatable = array();
+    $conf = variable_get('i18n_variables', array());
+    foreach (variable_get_info() as $name => $variable) {
+      if (!empty($variable['localize']) || in_array($name, $conf)) {
+        $translatable[] = $name;
+      }
+    }
+    return $translatable;
+  }
+  /**
+   * Implementation of VariableRealmControllerInterface::getDefaultKey().
+   */
+  public function getDefaultKey() {
+    // The default key will match the default language.
+    return language_default('language');
+  }
+  /**
+   * Implementation of VariableRealmControllerInterface::getRequestKey().
+   */
+  public function getRequestKey() {
+    return i18n_variable_language()->language;
+  }
+  /**
+   * Implementation of VariableRealmControllerInterface::getAllKeys().
+   */
+  public function getAllKeys() {
+    return locale_language_list('name', TRUE);
+  }
+}

sites/all/modules/i18n/i18n_variable/i18n_variable.info

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+name = Variable translation
+description = Multilingual variables that switch language depending on page language.
+dependencies[] = i18n
+dependencies[] = variable_store (7.x-2.x)
+dependencies[] = variable_realm (7.x-2.x)
+package = Multilingual - Internationalization
+core = 7.x
+configure = admin/config/regional/i18n/variable
+
+files[] = i18n_variable.class.inc
+files[] = i18n_variable.test
+
+; Information added by drupal.org packaging script on 2013-01-13
+version = "7.x-1.8"
+core = "7.x"
+project = "i18n"
+datestamp = "1358075001"
+

sites/all/modules/i18n/i18n_variable/i18n_variable.install

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+<?php
+
+/**
+ * @file
+ * Installation file for Internationalization (i18n) module.
+ */
+
+/**
+ * Implements hook_install().
+ */
+function i18n_variable_install() {
+  // Set module weight for it to run before most modules, but after variable_realm
+  db_query("UPDATE {system} SET weight = -900 WHERE name = 'i18n_variable' AND type = 'module'");
+  // Update from d6, module changed name
+  if (variable_get('i18n_drupal6_update')) {
+    i18n_variable_update_7000();
+    i18n_variable_update_7001();
+    i18n_variable_update_7002();
+  }
+  // Set some minimum variables to be translated.
+  variable_set('variable_realm_list_language', array('site_name', 'site_slogan'));
+}
+
+/**
+ * Implements hook_install().
+ */
+function i18n_variable_uninstall() {
+  if (drupal_load('module', 'variable_store')) {
+    // Delete all our variables from store.
+    variable_store_delete_all('language', NULL);
+  }
+}
+
+/**
+ * Update multilingual variables variable name
+ */
+function i18n_variable_update_7000() {
+  variable_set('i18n_variable_list', variable_get('i18n_variables', array()));
+  variable_set('i18n_variable_conf', variable_get('i18n_variables', array()));
+  variable_del('i18n_variables');
+}
+
+/**
+ * Move variables from old storage to new table
+ */
+function i18n_variable_update_7001() {
+  drupal_load('module', 'variable_store');
+  foreach (db_select('i18n_variable', 'v')->fields('v')->execute()->fetchAll() as $variable) {
+    variable_store_set('language', $variable->language, $variable->name, unserialize($variable->value));
+  }
+}
+
+/**
+ * Drop i18n_variable table if exists
+ */
+function i18n_variable_update_7002() {
+  if (db_table_exists('i18n_variable')) {
+    db_drop_table('i18n_variable');
+  }
+}
+
+/**
+ * Update list of realm variables.
+ */
+function i18n_variable_update_7003() {
+  drupal_load('module', 'variable_store');
+  $variable_list = variable_get('i18n_variable_conf', array());
+  variable_set('variable_realm_list_language', $variable_list);
+  // Delete old variables from store that are not in the list.
+  $old_variables = array_diff(variable_store_list_all('language'), variable_children($variable_list));
+  foreach ($old_variables as $name) {
+    variable_store_delete_all('language', NULL, $name);
+  }
+}
+
+/**
+ * Delete obsoleted variable realm variables.
+ */
+function i18n_variable_update_7004() {
+  variable_del('i18n_variable_conf');
+  variable_del('i18n_variable_list');
+}
+

sites/all/modules/i18n/i18n_variable/i18n_variable.module

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+<?php
+/**
+ * @file
+ * Internationalization (i18n) package. Multilingual variables API.
+ */
+
+/**
+ * The type of language used for variables.
+ */
+define('I18N_VARIABLE_LANGUAGE_TYPE', 'i18n_language_variable');
+
+/**
+ * Implements hook_language_init()
+ */
+function i18n_variable_language_init() {
+  if (drupal_multilingual()) {
+    module_invoke('variable_realm', 'initialize', 'language');
+  }
+}
+
+/**
+ * Implements hook_variable_realm_info().
+ */
+function i18n_variable_variable_realm_info() {
+  $realm['language'] = array(
+    'title' => t('Language'),
+    'weight' => 100,
+    'controller class' => 'I18nVariableLanguageRealm',
+    'store class' => 'VariableStoreRealmStore',
+    // Variables for this realm can be selected from a list.
+    'select' => TRUE,
+    'select path' => 'admin/config/regional/i18n/variable',
+    // Name for variables that belong to this realm: 'multilingual' variable/s
+    'variable name' => t('multilingual'),
+    'variable class' => 'i18n-variable',
+    // Automatically handle these variables in system settings forms.
+    'form settings' => TRUE,
+    'form switcher' => TRUE,
+  );
+  return $realm;
+}
+
+/**
+ * Implements hook_menu()
+ */
+function i18n_variable_menu() {
+  $items['admin/config/regional/i18n/variable'] = array(
+    'title' => 'Variables',
+    'description' => 'Configure multilingual variables.',
+    'page callback' => 'drupal_get_form',
+    'page arguments' => array('variable_realm_select_variables_form', 'language'),
+    'access arguments' => array('administer site configuration'),
+    'file' => 'variable_realm.form.inc',
+    'file path' => drupal_get_path('module', 'variable_realm'),
+    'type' => MENU_LOCAL_TASK,
+  );
+  return $items;
+}
+
+
+/**
+ * Get variables language, make sure it is initialized
+ */
+function i18n_variable_language() {
+  // If we've got a variables language, it will be that one
+  if (!isset($GLOBALS[I18N_VARIABLE_LANGUAGE_TYPE])) {
+    $GLOBALS[I18N_VARIABLE_LANGUAGE_TYPE] = i18n_language_interface();
+  }
+  return $GLOBALS[I18N_VARIABLE_LANGUAGE_TYPE];
+}
+
+/**
+ * Get original value for global variable/s
+ */
+function i18n_variable_global($name = NULL, $default = NULL) {
+  return variable_realm_global_get($name, $default);
+}
+
+/**
+ * Get list of multilingual variables or check whether a variable is multilingual
+ */
+function i18n_variable_list($name = NULL) {
+  $variables = &drupal_static(__FUNCTION__);
+  if (!isset($variables)) {
+    $variables = variable_children(variable_get('variable_realm_list_language', array()));
+  }
+  return $name ? in_array($name, $variables) : $variables;
+}
+
+/**
+* Load language variables into array.
+*
+* Pull variables from the store but filter out the ones that are not multilingual.
+*/
+function i18n_variable_load($langcode) {
+  $variables = array();
+  foreach (variable_store('language', $langcode) as $name => $value) {
+    if (i18n_variable_list($name)) {
+      $variables[$name] = $value;
+    }
+  }
+  return $variables;
+}
+
+/**
+ * Set a persistent language dependent variable.
+ *
+ * @param $name
+ *   The name of the variable to set.
+ * @param $value
+ *   The value to set. This can be any PHP data type; these functions take care
+ *   of serialization as necessary.
+ * @param $langcode
+ *   Language code.
+ */
+function i18n_variable_set($name, $value, $langcode) {
+  variable_realm_set('language', $langcode, $name, $value);
+}
+
+/**
+ * Get single multilingual variable
+ */
+function i18n_variable_get($name, $langcode, $default = NULL) {
+  return variable_realm_get('language', $langcode, $name, $default);
+}
+
+/**
+ * Unset a persistent multilingual variable.
+ *
+ * @param $name
+ *   The name of the variable to undefine.
+ * @param $langcode
+ *   Language code.
+ */
+function i18n_variable_del($name, $langcode) {
+  variable_realm_del('language', $langcode, $name);
+}
+

sites/all/modules/i18n/i18n_variable/i18n_variable.test

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+<?php
+/**
+ * @file
+ * Test case for multilingual variables
+ */
+
+
+class i18nVariableTestCase extends Drupali18nTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Variable translation',
+      'group' => 'Internationalization',
+      'description' => 'Variable translation functions'
+    );
+  }
+
+  function setUp() {
+    parent::setUp('i18n_variable', 'translation');
+    parent::setUpLanguages(array('administer site configuration'));
+  }
+
+  /**
+   * Set up translation for content type (page)
+   */
+  function setUpContentTranslation($settings = array()) {
+    $this->translator = $this->drupalCreateUser(array('create page content', 'edit own page content', 'translate content'));
+    $this->drupalLogin($this->admin_user);
+    // Set "Basic page" content type to use multilingual support with
+    // translation.
+    $this->drupalGet('admin/structure/types/manage/page');
+    $edit = array();
+    $edit['language_content_type'] = 2;
+    // Mark status and promoted
+    $edit['node_options[status]'] = 1;
+    $this->drupalPost('admin/structure/types/manage/page', $edit, t('Save content type'));
+    $this->assertRaw(t('The content type %type has been updated.', array('%type' => 'Basic page')), t('Basic page content type has been updated.'));
+
+    // Enable the language switcher block.
+    $language_type = LANGUAGE_TYPE_INTERFACE;
+    $edit = array("blocks[locale_$language_type][region]" => 'sidebar_first');
+    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));
+  }
+
+  function testVariableLocalize() {
+    $this->setUpContentTranslation();
+
+    // Create 2 nodes in different languages.
+    $first_title = $this->randomName(10);
+    $first_body = $this->randomString(50);
+    $first_node = $this->createNode('page', $first_title, $first_body, $this->default_language);
+
+    $secondary_title = $this->randomName(10);
+    $secondary_body = $this->randomString(50);
+    $secondary_node = $this->createNode('page', $secondary_title, $secondary_body, $this->secondary_language);
+
+    $this->drupalGet('<front>', array('language' => i18n_language_object($this->default_language)));
+    $this->assertText(t('No front page content has been created yet.'));
+
+    $this->drupalGet('<front>', array('language' => i18n_language_object($this->secondary_language)));
+    $this->assertText(t('No front page content has been created yet.'));
+
+    $edit = array(
+      'variables[site_name]' => 1,
+      'variables[site_frontpage]' => 1,
+    );
+    $this->drupalPost('admin/config/regional/i18n/variable', $edit, t('Save configuration'));
+
+    $edit_first = array(
+      'site_frontpage' => 'node/' . $first_node->nid,
+      'site_name' => $this->randomName(10),
+    );
+    $this->drupalPost('admin/config/system/site-information', $edit_first, t('Save configuration'), array('language' => i18n_language_object($this->default_language)));
+
+    $edit_secondary = array(
+      'site_frontpage' => 'node/' . $secondary_node->nid,
+      'site_name' => $this->randomName(10),
+    );
+    $this->drupalPost('admin/config/system/site-information', $edit_secondary, t('Save configuration'), array('language' => i18n_language_object($this->secondary_language)));
+
+    $this->drupalGet('<front>', array('language' => i18n_language_object($this->default_language)));
+    $this->assertText($edit_first['site_name']);
+    $this->assertNoText(t('No front page content has been created yet.'));
+    $this->assertText($first_title);
+
+    $this->drupalGet('<front>', array('language' => i18n_language_object($this->secondary_language)));
+    $this->assertText($edit_secondary['site_name']);
+    $this->assertNoText(t('No front page content has been created yet.'));
+    $this->assertText($secondary_title);
+  }
+}

sites/all/modules/i18n/i18n_variable/i18n_variable.variable.inc

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+<?php
+/**
+ * @file
+ * Variable information
+ */
+
+/**
+ * Implements hook_variable_info().
+ */
+function i18n_variable_variable_info($options = array()) {
+  $variables['i18n_variable_conf'] = array(
+    'title' => t('Multilingual variables, main variable names.', array(), $options),
+    'type' => 'array',
+    'group' => 'i18n',
+  );
+  $variables['i18n_variable_list'] = array(
+    'title' => t('Multilingual variables, real variable names.', array(), $options),
+    'type' => 'array',
+    'group' => 'i18n',
+  );
+  return $variables;
+}
+
+
+