fixed slider issue

Closes #3424541

startup_zymphonies_theme.theme

@@ -176,24 +176,37 @@ function startup_zymphonies_theme_preprocess_menu(&$variables, $hook) {
  */
 function startup_zymphonies_theme_get_slider_content() {
   $slider_content = array();
+  $slide_counter = 0;
   for ($i = 1; $i <= theme_get_setting('no_of_slides'); $i++) {
+    $slider = false;
     $fid = theme_get_setting('slide_image_path'.$i,'startup_zymphonies_theme');
     if (!empty($fid)) {
-      $file = file_load($fid[0]);
+      $file = File::load($fid[0]);
       $uri = $file->getFileUri();
       $path = \Drupal::service('file_url_generator')->generateAbsoluteString($uri);
+      $slider = true;
     }
     else {
-      $path = base_path() . \Drupal::service('extension.list.theme')->getPath('startup_zymphonies_theme') . theme_get_setting('slide_image_path_' . $i, 'startup_zymphonies_theme');
+      if(!empty(theme_get_setting('slide_title_' . $i, 'startup_zymphonies_theme')) || !empty(theme_get_setting('slide_description_' . $i,      'startup_zymphonies_theme')) || !empty(theme_get_setting('slide_url_' . $i, 'startup_zymphonies_theme'))){
+        $path = base_path() . \Drupal::service('extension.list.theme')->getPath('startup_zymphonies_theme') . theme_get_setting('slide_image_path_1' , 'startup_zymphonies_theme');
+        $slider = true;
+      }
+    }
+    if($slider){
+      $addclass = "";
+      $slide_counter ++;
+      if(!theme_get_setting('slide_title_' . $slide_counter, 'startup_zymphonies_theme')){
+        $addclass = "title-empty";
+      }
+      $slider_content[$slide_counter] = '<li>
+        <img src="' . $path . '" alt="Slider Banner" />
+          <div class="slider-caption">
+            <h2 class="slider-title '.$addclass.'">' . theme_get_setting('slide_title_' . $slide_counter, 'startup_zymphonies_theme').'</h2>
+            <div class="clearfix"><p class="slider-description">' . theme_get_setting('slide_description_' . $slide_counter, 'startup_zymphonies_theme').'</p></div>
+            <a href="' . theme_get_setting('slide_url_' . $slide_counter, 'startup_zymphonies_theme') . '" class="more-link">Read more</a>
+        </div>
+      </li>';
     }
-    $slider_content[$i] = '<li>
-      <img src="' . $path . '" alt="Slider Banner" />
-      <div class="slider-caption">
-        <h2 class="slider-title">' . theme_get_setting('slide_title_' . $i, 'startup_zymphonies_theme').'</h2>
-        <div class="clearfix"><p class="slider-description">' . theme_get_setting('slide_description_' . $i, 'startup_zymphonies_theme').'</p></div>
-        <a href=' . theme_get_setting('slide_url_' . $i, 'startup_zymphonies_theme') . ' class="more-link">Read more</a>
-      </div>
-    </li>';
   }
   return $slider_content;
 }