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// put this in functions.php
// this customizes the Google Maps language interface, when Toolset is being used to render Google Maps and WPML is being used to set a language
// if there is a language value set by WPML, then deregister the script enqueued in the Toolset Maps plugin, and rewrite it with a language argument
if ( ! empty( ICL_LANGUAGE_CODE ) ) {
	
	wp_deregister_script( 'google-maps');
	
// where FOOBARBAZ is your Google Maps API key
	wp_register_script( 'google-maps', 'https://maps.googleapis.com/maps/api/js?libraries=places&key=FOOBARBAZ&ver=3.5.2&language=' . ICL_LANGUAGE_CODE , array(), '3.5.2', true );

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// put this code in functions.php
// add a body class with the current WPML language
add_filter('body_class', 'append_language_class');
function append_language_class($classes){
  $classes[] = ICL_LANGUAGE_CODE;  //or however you want to name your class based on the language code
  return $classes;
}

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/* put this code in header.php */

<?php
  $currentLanguage = ICL_LANGUAGE_CODE; 
  $jsonCurrentLanguage = wp_json_encode($currentLanguage);
?>

<script type="text/javascript">
//<![CDATA[
  var currentLanguageCode = jQuery.parseJSON( ' <?php echo $jsonCurrentLanguage; ?>' );

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// Put this code in functions.php
// assign the WML constant that stores the current language to a PHP variable.
$currentLanguage = ICL_LANGUAGE_CODE; 
// then write javascript to DOM that declares the that variables value as a global javascript variable, for use elsewhere
echo "<script>  var currentLanguage = '$currentLanguage';</script>";

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// Put this code in functions.php
// Add first and last classes to all WordPress menu items that are part of WP Nav Menu Objects
add_filter( 'wp_nav_menu_objects', function ( $items ) {
   if ( ! empty( $items ) ) {
      $items[1]->classes[] = 'menu-item-first';
      $items[ count( $items ) ]->classes[] = 'menu-item-last';
   }
   return $items;
} );