Improved the requirement messages

ckeditor_advanced_tab.install

@@ -2,38 +2,41 @@
 
 /**
  * @file
- * Install, update, and uninstall functions for CKEditor Advanced Tab.
+ * Install, update and uninstall hooks for the CKEditor Advanced Tab module.
  */
 
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+
 /**
  * Implements hook_requirements().
  */
 function ckeditor_advanced_tab_requirements($phase) {
-
   $requirements = [];
 
   if ($phase == 'install' || $phase == 'runtime') {
-    $path = '/libraries/ckeditor/plugins/dialogadvtab/';
-    $plugin_detected = file_exists(DRUPAL_ROOT . $path . 'plugin.js');
+    $path = DRUPAL_ROOT . '/libraries/ckeditor/plugins/dialogadvtab/';
+    $t_args = [':plugin_url' => 'https://ckeditor.com/cke4/addon/dialogadvtab', ':directory' => $path];
 
-    if ($plugin_detected) {
+    if (file_exists($path . 'plugin.js')) {
       $requirements['dialogadvtab'] = [
-        'title' => t('CKEditor Advanced Tab'),
-        'value' => t('Plugin detected'),
+        'title' => new TranslatableMarkup('Advanced Tab for Dialogs'),
+        'value' => new TranslatableMarkup('Found'),
+        'description' => new TranslatableMarkup(
+          'The <a href=":plugin_url">Advanced Tab for Dialogs</a> plugin required from the <em>CKEditor Advanced Tab</em> module has been copied in the correct directory.',
+          $t_args
+        ),
         'severity' => REQUIREMENT_OK,
       ];
     }
     else {
       $requirements['dialogadvtab'] = [
-        'title' => t('CKEditor Advanced Tab'),
-        'value' => t('Plugin not detected'),
+        'title' => new TranslatableMarkup('Advanced Tab for Dialogs'),
+        'value' => new TranslatableMarkup('Not found'),
         'severity' => REQUIREMENT_ERROR,
-        'description' => t('The CKEditor plugin <b>Dialog Advanced Tab</b> is
-  required. Download <a href=":url">here</a> and copy to
-  <code>:path</code>.', [
-          ':url' => 'https://ckeditor.com/cke4/addon/dialogadvtab',
-          ':path' => $path,
-        ]),
+        'description' => new TranslatableMarkup(
+          'The <a href=":plugin_url">Advanced Tab for Dialogs</a> plugin required from the <em>CKEditor Advanced Tab</em> module has not been found. Download it and copy it in the %directory directory.',
+          $t_args
+        ),
       ];
     }
   }