diff --git a/js/lang_dropdown.js b/js/lang_dropdown.js
index e66cae2..311c4a6 100644
--- a/js/lang_dropdown.js
+++ b/js/lang_dropdown.js
@@ -6,22 +6,22 @@ Drupal.behaviors.lang_dropdown = {
     if (settings.lang_dropdown) {
       var flags, msddSettings;
       for (key in settings.lang_dropdown) {
-        msddSettings = settings.lang_dropdown[key].jsWidget;
+        msddSettings = settings.lang_dropdown[key];
         flags = msddSettings.languageicons;
         if (flags) {
           $.each(flags, function(index, value) {
             if (msddSettings.widget == "msdropdown") {
-              $('select#lang-dropdown-select-' + key + ' option[value="' + index + '"]').attr('data-image', value);
+              $('select#lang-dropdown-select-' + msddSettings.key + ' option[value="' + index + '"]').attr('data-image', value);
             }
             else if (msddSettings.widget == "ddslick" && Boolean(msddSettings.showSelectedHTML)) {
-              $('select#lang-dropdown-select-' + key + ' option[value="' + index + '"]').attr('data-imagesrc', value);
+              $('select#lang-dropdown-select-' + msddSettings.key + ' option[value="' + index + '"]').attr('data-imagesrc', value);
             }
           });
         }
 
         if (msddSettings.widget == "msdropdown") {
           try {
-            $('select#lang-dropdown-select-' + key).msDropDown({
+            $('select#lang-dropdown-select-' + msddSettings.key).msDropDown({
               visibleRows: msddSettings.visibleRows,
               roundedCorner: Boolean(msddSettings.roundedCorner),
               animStyle: msddSettings.animStyle,
@@ -34,14 +34,14 @@ Drupal.behaviors.lang_dropdown = {
           }
         }
         else if (msddSettings.widget == "chosen") {
-          $('select#lang-dropdown-select-' + key).chosen({
+          $('select#lang-dropdown-select-' + msddSettings.key).chosen({
             disable_search: msddSettings.disable_search,
             no_results_text: msddSettings.no_results_text
           });
         }
         else if (msddSettings.widget == "ddslick") {
           $.data(document.body, 'ddslick'+key+'flag', 0);
-          $('select#lang-dropdown-select-' + key).ddslick({
+          $('select#lang-dropdown-select-' + msddSettings.key).ddslick({
             width: msddSettings.width,
             height: (msddSettings.height == 0) ? null : msddSettings.height,
             showSelectedHTML: Boolean(msddSettings.showSelectedHTML),
@@ -51,7 +51,7 @@ Drupal.behaviors.lang_dropdown = {
               if (i) {
                 $.data(document.body, 'ddslick'+key+'flag', 0);
                 var lang = data.selectedData.value;
-                var href = $('#lang-dropdown-select-'+key).parents('form').find('input[name="' + lang + '"]').val();
+                var href = $('#lang-dropdown-select-' + msddSettings.key).parents('form').find('input[name="' + lang + '"]').val();
                 window.location.href = href;
               }
               $.data(document.body, 'ddslick'+key+'flag', 1);
diff --git a/lang_dropdown.libraries.yml b/lang_dropdown.libraries.yml
index 9b4d2be..45e520e 100644
--- a/lang_dropdown.libraries.yml
+++ b/lang_dropdown.libraries.yml
@@ -15,10 +15,10 @@ ms-dropdown:
   title: 'Marghoob Suleman Dropdown jquery library'
   website: 'https://github.com/marghoobsuleman/ms-Dropdown'
   js:
-    /sites/all/libraries/ms-Dropdown/js/msdropdown/jquery.dd.min.js: {}
+    /libraries/ms-Dropdown/js/msdropdown/jquery.dd.min.js: {}
   css:
     component:
-      /sites/all/libraries/ms-Dropdown/css/msdropdown/dd.css: {}
+      /libraries/ms-Dropdown/css/msdropdown/dd.css: {}
   dependencies:
     - core/jquery
 
@@ -27,10 +27,10 @@ chosen:
   title: 'Chosen'
   website: http://harvesthq.github.com/chosen
   js:
-   /sites/all/libraries/chosen/chosen.jquery.min.js: {}
+   /libraries/chosen/chosen.jquery.min.js: {}
   css:
     component:
-      /sites/all/libraries/chosen/chosen.css: {}
+      /libraries/chosen/chosen.css: {}
   dependencies:
     - core/jquery
 
@@ -39,6 +39,97 @@ ddslick:
   title: ddSlick
   website: http://designwithpc.com/Plugins/ddSlick
   js:
-    /sites/all/libraries/ddslick/jquery.ddslick.min.js: {}
+    /libraries/ddslick/jquery.ddslick.min.js: {}
   dependencies:
     - core/jquery
+
+#skins
+ldsSkin:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsSkin.css: {}
+
+ldsSkinAfter:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsSkin.css: {}
+
+ldsSkinNoIcon:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsSkin.css: {}
+
+ldsSkinNoLabel:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsSkin.css: {}
+
+ldsDark:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsDark.css: {}
+
+ldsDarkAfter:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsDark.css: {}
+
+ldsDarkNoIcon:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsDark.css: {}
+
+ldsDarkNoLabel:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsDark.css: {}
+
+ldsBlue:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsBlue.css: {}
+
+ldsBlueAfter:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsBlue.css: {}
+
+ldsBlueNoIcon:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsBlue.css: {}
+
+ldsBlueNoLabel:
+  version: 1.x
+  css:
+    theme:
+      css/msdropdown/ldsBlue.css: {}
+
+ddsDefault:
+  version: 1.x
+  css:
+    theme:
+      css/ddslick/ddsDefault.css: {}
+
+ddsDark:
+  version: 1.x
+  css:
+    theme:
+      css/ddslick/ddsDark.css: {}
+
+ddsBlue:
+  version: 1.x
+  css:
+    theme:
+      css/ddslick/ddsBlue.css: {}
diff --git a/lang_dropdown.module b/lang_dropdown.module
index 6cfebf4..5cb3e22 100644
--- a/lang_dropdown.module
+++ b/lang_dropdown.module
@@ -68,7 +68,6 @@ function lang_dropdown_help($path, $arg) {
   }
 }
 
-
 /**
  * Helper function to handle msdropdown skins data
  */
@@ -168,63 +167,3 @@ function _lang_dropdown_get_ddslick_skins() {
     ),
   );
 }
-
-/**
- * Get the location of the msdropdown library.
- *
- * @return
- *   The location of the library, or FALSE if the library isn't installed.
- */
-function _lang_dropdown_get_msdropdown_path() {
-  $path = FALSE;
-  if (function_exists('libraries_get_path') && libraries_get_path('msdropdown')) {
-    $path = libraries_get_path('msdropdown');
-    if (!file_exists($path)) {
-      $path = FALSE;
-    }
-  }
-  elseif (file_exists('sites/all/libraries/ms-Dropdown/js/msdropdown/jquery.dd.min.js')) {
-    $path = 'sites/all/libraries/ms-Dropdown';
-  }
-  return $path;
-}
-
-/**
- * Get the location of the chosen library.
- *
- * @return
- *   The location of the library, or FALSE if the library isn't installed.
- */
-function _lang_dropdown_get_chosen_path() {
-  $path = FALSE;
-  if (function_exists('libraries_get_path') && libraries_get_path('chosen')) {
-    $path = libraries_get_path('chosen');
-    if (!file_exists($path)) {
-      $path = FALSE;
-    }
-  }
-  elseif (file_exists('sites/all/libraries/chosen/chosen.jquery.min.js')) {
-    $path = 'sites/all/libraries/chosen';
-  }
-  return $path;
-}
-
-/**
- * Get the location of the ddslick library.
- *
- * @return
- *   The location of the library, or FALSE if the library isn't installed.
- */
-function _lang_dropdown_get_ddslick_path() {
-  $path = FALSE;
-  if (function_exists('libraries_get_path') && libraries_get_path('ddslick')) {
-    $path = libraries_get_path('ddslick');
-    if (!file_exists($path)) {
-      $path = FALSE;
-    }
-  }
-  elseif (file_exists('sites/all/libraries/ddslick/jquery.ddslick.min.js')) {
-    $path = 'sites/all/libraries/ddslick';
-  }
-  return $path;
-}
diff --git a/src/Form/LanguageDropdownForm.php b/src/Form/LanguageDropdownForm.php
index b273fbd..d87bfaa 100755
--- a/src/Form/LanguageDropdownForm.php
+++ b/src/Form/LanguageDropdownForm.php
@@ -54,7 +54,11 @@ class LanguageDropdownForm extends FormBase {
 
     $unique_id = uniqid();
 
-    $options = $js_settings = $hidden_elements = array();
+    $options  = $hidden_elements = array();
+    $js_settings = array(
+      'key' => $unique_id,
+    );
+
     $selected_option_language_icon = $language_selected = $language_session_selected = '';
 
     $form['lang_dropdown_type'] = array(
@@ -78,7 +82,7 @@ class LanguageDropdownForm extends FormBase {
     foreach ($this->languages as $lang_code => $lang_options) {
 
       // The language is not enabled on this domain
-      if ($domain_locale_exists && !array_key_exists($lang_code, $domain_languages)) continue;
+      //if ($domain_locale_exists && !array_key_exists($lang_code, $domain_languages)) continue;
 
       // There is no translation for this language and not all languages are shown
       if (in_array('locale-untranslated', $lang_options['attributes']['class']) && !$this->settings['showall']) continue;
@@ -87,10 +91,10 @@ class LanguageDropdownForm extends FormBase {
       switch ($this->settings['display']) {
         case LANGDROPDOWN_DISPLAY_TRANSLATED:
         default:
-          $options += array($lang_code => $this->t($language_objects[$lang_code]->getName()));
+          $options += array($lang_code => $this->t($lang_options['language']->getName()));
           break;
         case LANGDROPDOWN_DISPLAY_NATIVE:
-          $options += array($lang_code => $lang_options['title']);
+          $options += array($lang_code => $lang_options['language']->getName());
           break;
         case LANGDROPDOWN_DISPLAY_LANGCODE:
           $options += array($lang_code => $lang_code);
@@ -132,7 +136,6 @@ class LanguageDropdownForm extends FormBase {
         $languageicons_path = $languageicons_config->get('path');
         $js_settings['languageicons'][$lang_code] = file_create_url(str_replace('*', $lang_code, $languageicons_path));
       }
-
     }
 
     // If session-active is set that's the selected language otherwise rely on $language_selected
@@ -149,8 +152,6 @@ class LanguageDropdownForm extends FormBase {
 
     // Add required files and settings for JS widget.
     if ($this->settings['widget'] == LANGDROPDOWN_MSDROPDOWN) {
-      $form['#attached']['library'][] = 'lang_dropdown/msdropdown';
-
       $js_settings += array(
         'widget' => 'msdropdown',
         'visibleRows' => $this->settings['msdropdown']['visible_rows'],
@@ -162,51 +163,34 @@ class LanguageDropdownForm extends FormBase {
       $selected_skin = $this->settings['msdropdown']['skin'];
       if ($selected_skin == 'custom') {
         $custom_skin = Html::escape($this->settings['msdropdown']['custom_skin']);
-        drupal_add_css(_lang_dropdown_get_msdropdown_path() . '/css/msdropdown/' . $custom_skin . '.css');
+        $form['#attached']['library'][] = 'ms-dropdown';
         $js_settings += array(
           'mainCSS' => $custom_skin,
         );
       } else {
         $skins = _lang_dropdown_get_msdropdown_skins();
         $skin_data = $skins[$selected_skin];
-        drupal_add_css($skin_data['file']);
+        $form['#attached']['library'][] = 'lang_dropdown/' . $selected_skin;
         $js_settings += array(
           'mainCSS' => $skin_data['mainCSS'],
         );
       }
-
-      drupal_add_js(array('lang_dropdown' => array( $unique_id => array('jsWidget' => $js_settings))), 'setting');
-
+      $form['#attached']['library'][] = 'lang_dropdown/ms-dropdown';
+      $form['#attached']['drupalSettings']['lang_dropdown']['ms-dropdown'] = $js_settings;
     }
     else if ($this->settings['widget'] == LANGDROPDOWN_CHOSEN) {
-
-      drupal_add_library('lang_dropdown', 'chosen');
-
       $js_settings += array(
         'widget' => 'chosen',
         'disable_search' => $this->settings['chosen']['disable_search'],
         'no_results_text' => $this->settings['chosen']['no_results_text'],
       );
 
-      drupal_add_js(array('lang_dropdown' => array( $unique_id => array('jsWidget' => $js_settings))), 'setting');
-
+      $form['#attached']['library'][] = 'lang_dropdown/chosen';
+      $form['#attached']['drupalSettings']['lang_dropdown']['chosen'] = $js_settings;
     }
     else if ($this->settings['widget'] == LANGDROPDOWN_DDSLICK) {
-
-      drupal_add_library('lang_dropdown', 'ddslick');
-
+      $form['#attached']['library'][] = 'lang_dropdown/ddslick';
       $selected_skin = $this->settings['ddslick']['skin'];
-      if ($selected_skin == 'custom') {
-        $custom_skin = check_plain($this->settings['ddslick']['custom_skin']);
-        drupal_add_css(_lang_dropdown_get_ddslick_path() . '/' . $custom_skin . '.css');
-        $ddsSkin = $custom_skin;
-      } else {
-        $skins = _lang_dropdown_get_ddslick_skins();
-        $skin_data = $skins[$selected_skin];
-        drupal_add_css($skin_data['file']);
-        $ddsSkin = $selected_skin;
-      }
-
       $js_settings += array(
         'widget' => 'ddslick',
         'width' => $this->settings['width'],
@@ -214,12 +198,13 @@ class LanguageDropdownForm extends FormBase {
         'showSelectedHTML' => $this->settings['ddslick']['showSelectedHTML'],
         'imagePosition' => $this->settings['ddslick']['imagePosition'],
       );
-
-      drupal_add_js(array('lang_dropdown' => array( $unique_id => array('jsWidget' => $js_settings))), 'setting');
-
+      $form['#attributes']['class'][] = ($selected_skin == 'custom') ?
+        Html::escape($this->settings['ddslick']['custom_skin']) : $selected_skin;
+      $form['#attached']['library'][] = 'lang_dropdown/' . $selected_skin;
+      $form['#attached']['drupalSettings']['lang_dropdown']['ddslick'] = $js_settings;
     }
 
-    ($this->settings['languageicons']['flag_position']) ? $flag_position = '#suffix' : $flag_position = '#prefix';
+    $flag_position = ($this->settings['languageicons']['flag_position']) ? '#suffix' : '#prefix';
 
     // Now we build the $form array.
     $form['lang_dropdown_select'] = array(
@@ -245,13 +230,8 @@ class LanguageDropdownForm extends FormBase {
       $form['lang_dropdown_select'][$flag_position] = $selected_option_language_icon;
     }
 
-    $form['#attributes']['class'] = array('lang_dropdown_form', $this->type);
+    $form['#attributes']['class']['lang_dropdown_form'][] = $this->type;
     $form['#attributes']['id'] = 'lang_dropdown_form_' . $unique_id;
-
-    if ($this->settings['widget'] == LANGDROPDOWN_DDSLICK) {
-      $form['#attributes']['class'][] = $ddsSkin;
-    }
-
     $form['submit'] = array(
       '#type' => 'submit',
       '#value' => t('Go'),
diff --git a/src/Plugin/Block/LanguageDropdownBlock.php b/src/Plugin/Block/LanguageDropdownBlock.php
index c2363f9..ad1a40f 100644
--- a/src/Plugin/Block/LanguageDropdownBlock.php
+++ b/src/Plugin/Block/LanguageDropdownBlock.php
@@ -207,7 +207,8 @@ class LanguageDropdownBlock extends BlockBase implements ContainerFactoryPluginI
       $form['lang_dropdown']['msdropdown']['#description'] = $this->t('This looks better with <a href=":link">language icons</a> module.', array(':link' => LANGDROPDOWN_LANGUAGEICONS_MOD_URL));
     }
 
-    if (_lang_dropdown_get_msdropdown_path()) {
+    $library = \Drupal::service('library.discovery')->getLibraryByName('lang_dropdown', 'ms-dropdown');
+    if (!empty($library)) {
       $num_rows = array(2, 3, 4, 5 , 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20);
       $form['lang_dropdown']['msdropdown']['visible_rows'] = array(
         '#type' => 'select',
@@ -266,7 +267,7 @@ class LanguageDropdownBlock extends BlockBase implements ContainerFactoryPluginI
     }
     else {
       // todo: fix instructions
-      $form['lang_dropdown']['msdropdown']['#description'] = $this->t('You need to download the <a href=":link">Marghoob Suleman Dropdown JavaScript library</a> and extract the entire contents of the archive into the %path directory on your server.', array(':link' => LANGDROPDOWN_MSDROPDOWN_URL, '%path' => 'sites/all/libraries'));
+      $form['lang_dropdown']['msdropdown']['#description'] = $this->t('You need to download the <a href=":link">Marghoob Suleman Dropdown JavaScript library</a> and extract the entire contents of the archive into the %path directory on your server.', array(':link' => LANGDROPDOWN_MSDROPDOWN_URL, '%path' => 'drupal_root/libraries'));
       $form['lang_dropdown']['msdropdown']['visible_rows'] = array(
         '#type' => 'hidden',
         '#value' => $this->configuration['msdropdown']['visible_rows'],
@@ -334,7 +335,8 @@ class LanguageDropdownBlock extends BlockBase implements ContainerFactoryPluginI
       ),
     );
 
-    if (!$this->moduleHandler->moduleExists('chosen') && _lang_dropdown_get_chosen_path()) {
+    $library = \Drupal::service('library.discovery')->getLibraryByName('lang_dropdown', 'chosen');
+    if (!$this->moduleHandler->moduleExists('chosen') && !empty($library)) {
       $form['lang_dropdown']['chosen']['disable_search'] = array(
         '#type' => 'checkbox',
         '#title' => t('Disable search box'),
@@ -366,7 +368,7 @@ class LanguageDropdownBlock extends BlockBase implements ContainerFactoryPluginI
         $form['lang_dropdown']['chosen']['#description'] = t('If you are already using the !chosenmod you must just choose to output language dropdown as a simple HTML select and allow <a href=":link">Chosen module</a> to turn it into a chosen style select.', array(':link' => LANGDROPDOWN_CHOSEN_MOD_URL));
       } else {
         // todo: fix instructions
-        $form['lang_dropdown']['chosen']['#description'] = t('You need to download the <a href=":link">Chosen library</a> and extract the entire contents of the archive into the %path directory on your server.', array(':link' => LANGDROPDOWN_CHOSEN_WEB_URL, '%path' => 'sites/all/libraries'));
+        $form['lang_dropdown']['chosen']['#description'] = t('You need to download the <a href=":link">Chosen library</a> and extract the entire contents of the archive into the %path directory on your server.', array(':link' => LANGDROPDOWN_CHOSEN_WEB_URL, '%path' => 'drupal_root/libraries'));
       }
     }
 
@@ -381,7 +383,8 @@ class LanguageDropdownBlock extends BlockBase implements ContainerFactoryPluginI
       ),
     );
 
-    if (_lang_dropdown_get_ddslick_path()) {
+    $library = \Drupal::service('library.discovery')->getLibraryByName('lang_dropdown', 'ddslick');
+    if (!empty($library)) {
       $form['lang_dropdown']['ddslick']['ddslick_height'] = array(
         '#type' => 'number',
         '#title' => t('Height'),
@@ -545,38 +548,32 @@ class LanguageDropdownBlock extends BlockBase implements ContainerFactoryPluginI
    * Overrides \Drupal\block\BlockBase::blockValidate().
    */
   public function blockValidate($form, FormStateInterface $form_state) {
-
     $widget = $form_state->getValue('lang_dropdown')['widget'];
     switch ($widget) {
-
       case LANGDROPDOWN_MSDROPDOWN:
-        if (!_lang_dropdown_get_msdropdown_path()) {
-          $form_state->setError($form['settings']['lang_dropdown']['widget'], $this->t('You can\'t use <a href=":link">Marghoob Suleman Dropdown</a> output. You don\'t have the library installed.', array(':link' => LANGDROPDOWN_MSDROPDOWN_URL)));
+        $library = \Drupal::service('library.discovery')->getLibraryByName('lang_dropdown', 'ms-dropdown');
+        if (empty($library) || (isset($library['js']) && !file_exists($library['js'][0]['data']))) {
+          $form_state->setErrorByName('settings', $this->t('You can\'t use <a href=":link">Marghoob Suleman Dropdown</a> output. You don\'t have the library installed.', array(':link' => LANGDROPDOWN_MSDROPDOWN_URL)));
         }
         break;
 
       case LANGDROPDOWN_CHOSEN:
-        if ($this->moduleHandler->moduleExists('chosen')) {
-          //$form_state->setError($form['settings']['lang_dropdown']['widget'], $this->t('You can\'t use !chosen output directly on language dropdown switcher. You have !chosenmod installed. Use simple HTML select as output and !chosenmod will render it with the !chosen library.', array('!chosen' => l(t('Chosen'), LANGDROPDOWN_CHOSEN_WEB_URL), '!chosenmod' => l(t('Chosen module'), LANGDROPDOWN_CHOSEN_MOD_URL))));
-        }
-        else {
-          if (!_lang_dropdown_get_chosen_path()) {
-            //$form_state->setError($form['settings']['lang_dropdown']['widget'], $this->t('You can\'t use !chosen output. You don\'t have !chosen library installed.', array('!chosen' => l(t('Chosen'), LANGDROPDOWN_CHOSEN_WEB_URL))));
-          }
+        $library = \Drupal::service('library.discovery')->getLibraryByName('lang_dropdown', 'chosen');
+        if (empty($library) || (isset($library['js']) && !file_exists($library['js'][0]['data']))) {
+          $form_state->setErrorByName('settings', $this->t('You can\'t use <a href=":link">Chosen</a> output. You don\'t have the library installed.', array(':link' => LANGDROPDOWN_CHOSEN_MOD_URL)));
         }
         break;
 
       case LANGDROPDOWN_DDSLICK:
-        if (!_lang_dropdown_get_ddslick_path()) {
-          //$form_state->setError($form['settings']['lang_dropdown']['widget'], $this->t('You can\'t use !ddslick output. You don\'t have !ddslick library installed.', array('!ddslick' => l(t('ddSlick'), LANGDROPDOWN_DDSLICK_WEB_URL))));
+        $library = \Drupal::service('library.discovery')->getLibraryByName('lang_dropdown', 'ddslick');
+        if (empty($library) || (isset($library['js']) && !file_exists($library['js'][0]['data']))) {
+          $form_state->setErrorByName('settings', $this->t('You can\'t use <a href=":link">ddSlick</a> output. You don\'t have the library installed.', array(':link' => LANGDROPDOWN_DDSLICK_WEB_URL)));
         }
         break;
-      
+
       default:
         break;
-
     }
-
   }
 
   /**
@@ -626,19 +623,30 @@ class LanguageDropdownBlock extends BlockBase implements ContainerFactoryPluginI
    * {@inheritdoc}
    */
   public function build() {
+    $library = array();
+    switch ($this->configuration['widget']) {
+      case LANGDROPDOWN_MSDROPDOWN:
+        $library = \Drupal::service('library.discovery')->getLibraryByName('lang_dropdown', 'ms-dropdown');
+        break;
+
+      case LANGDROPDOWN_CHOSEN:
+        $library = \Drupal::service('library.discovery')->getLibraryByName('lang_dropdown', 'chosen');
+        break;
 
-    // prevent erroneous configuration
-    if ($this->configuration['widget'] == LANGDROPDOWN_MSDROPDOWN && !_lang_dropdown_get_msdropdown_path()) { return array(); }
-    if ($this->configuration['widget'] == LANGDROPDOWN_CHOSEN && !_lang_dropdown_get_chosen_path()) { return array(); }
-    if ($this->configuration['widget'] == LANGDROPDOWN_DDSLICK && !_lang_dropdown_get_ddslick_path()) { return array(); }
+      case LANGDROPDOWN_DDSLICK:
+        $library = \Drupal::service('library.discovery')->getLibraryByName('lang_dropdown', 'ddslick');
+        break;
+    }
+
+    if (empty($library) && ($this->configuration['widget'] != LANGDROPDOWN_SIMPLE_SELECT)) {
+      return array();
+    }
 
     $route = $this->pathMatcher->isFrontPage() ? '<front>' : '<current>';
     $url = Url::fromRoute($route);
     list(, $type) = explode(':', $this->getPluginId());
     $languages = $this->languageManager->getLanguageSwitchLinks($type, $url);
-
     $user = \Drupal::currentUser();
-
     $roles = $user->getRoles();
 
     foreach ($languages->links as $langcode => $link) {