Update due to D8 Core changes: Various classes/interfaces renamed to support...

Update due to D8 Core changes: Various classes/interfaces renamed to support PHP 7 (https://www.drupal.org/node/2457593)

src/Plugin/views/style/Visualization.php

@@ -8,7 +8,7 @@ namespace Drupal\visualization\Plugin\views\style;
 
 use Drupal\views\Plugin\views\style\StylePluginBase;
 use Drupal\Core\Form\FormStateInterface;
-use Drupal\Component\Utility\String;
+use Drupal\Component\Utility\SafeMarkup;
 
 /** Style plugin uses views ui to configure views data for rendering charts.
  *
@@ -60,7 +60,7 @@ class Visualization extends StylePluginBase {
   /**
    * Set default options.
    */
-  public function defineOptions() {
+  protected function defineOptions() {
     $options = parent::defineOptions();
 
     $options['type'] = array('default' => 'line');
@@ -106,7 +106,7 @@ class Visualization extends StylePluginBase {
 
       $form['fields'][$field] = array(
         '#type' => 'details',
-        '#title' => String::checkPlain($field),
+        '#title' => SafeMarkup::checkPlain($field),
         '#collapsible' => TRUE,
         '#collapsed' => empty($this->options['fields'][$field]),
       );

src/Plugin/visualization/handler/GoogleVisualizationAPIHandler.php

@@ -6,7 +6,7 @@
 
 namespace Drupal\visualization\Plugin\visualization\handler;
 
-use Drupal\Component\Utility\String;
+use Drupal\Component\Utility\SafeMarkup;
 use Drupal\Component\Annotation\Plugin;
 use Drupal\Core\Annotation\Translation;
 use Drupal\visualization\VisualizationHandlerInterface;
@@ -66,12 +66,12 @@ class GoogleVisualizationAPIHandler implements VisualizationHandlerInterface {
       $table_row = array();
 
       if (!empty($options['xAxis']['labelField'])) {
-        $table_row[] = String::checkPlain(strip_tags((string) $row[$options['xAxis']['labelField']]));
+        $table_row[] = SafeMarkup::checkPlain(strip_tags((string) $row[$options['xAxis']['labelField']]));
       }
 
       foreach ($options['fields'] as $name => $column) {
         if (!empty($column['enabled'])) {
-          $value = is_null($row[$name]) ? NULL : (float) $row[$name];
+          $value = is_null($row[$name]) ? NULL : (float) $row[$name]->__toString();
 
           $table_row[] = $value;
         }

src/Plugin/visualization/handler/HighchartsHandler.php

@@ -6,7 +6,7 @@
 
 namespace Drupal\visualization\Plugin\visualization\handler;
 
-use Drupal\Component\Utility\String;
+use Drupal\Component\Utility\SafeMarkup;
 use Drupal\Component\Annotation\Plugin;
 use Drupal\Core\Annotation\Translation;
 use Drupal\visualization\VisualizationHandlerInterface;
@@ -59,7 +59,7 @@ class HighchartsHandler implements VisualizationHandlerInterface {
     $x_axis = array();
     if (!empty($options['xAxis']['labelField'])) {
       foreach ($data as $row) {
-        $x_axis[] = String::checkPlain(strip_tags((string) $row[$options['xAxis']['labelField']]));
+        $x_axis[] = SafeMarkup::checkPlain(strip_tags((string) $row[$options['xAxis']['labelField']]));
       }
     }
 
@@ -90,7 +90,7 @@ class HighchartsHandler implements VisualizationHandlerInterface {
           $value = (int) $row[$name];
 
           if (!empty($column['enabled'])) {
-            $serie->data[] = (object) array('name' => String::checkPlain(strip_tags($row[$options['xAxis']['labelField']])), 'y' => $value);
+            $serie->data[] = (object) array('name' => SafeMarkup::checkPlain(strip_tags($row[$options['xAxis']['labelField']])), 'y' => $value);
           }
           else {
             $serie->data[] = $value;