Issue #2305807 by amitgoyal, olli | jhodgdon: Fixed Clicking "Add" filter and then canceling dialog results in "You have unsaved changes.".

core/modules/views/src/Ajax/ShowButtonsCommand.php

@@ -16,12 +16,31 @@ use Drupal\Core\Ajax\CommandInterface;
  */
 class ShowButtonsCommand implements CommandInterface {
 
+
+  /**
+   * Whether the view has been changed.
+   *
+   * @var bool
+   */
+  protected $changed;
+
+  /**
+   * Constructs a \Drupal\views\Ajax\ShowButtonsCommand object.
+   *
+   * @param bool $changed
+   *   Whether the view has been changed.
+   */
+  public function __construct($changed) {
+    $this->changed = $changed;
+  }
+
   /**
    * Implements \Drupal\Core\Ajax\CommandInterface::render().
    */
   public function render() {
     return array(
       'command' => 'viewsShowButtons',
+      'changed' => $this->changed,
     );
   }
 

core/modules/views_ui/js/ajax.js

@@ -13,7 +13,9 @@
 
   Drupal.AjaxCommands.prototype.viewsShowButtons = function (ajax, response, status) {
     $('div.views-edit-view div.form-actions').removeClass('js-hide');
-    $('div.views-edit-view div.view-changed.messages').removeClass('js-hide');
+    if (response.changed) {
+      $('div.views-edit-view div.view-changed.messages').removeClass('js-hide');
+    }
   };
 
   Drupal.AjaxCommands.prototype.viewsTriggerPreview = function (ajax, response, status) {

core/modules/views_ui/src/Form/Ajax/ViewsFormBase.php

@@ -161,7 +161,7 @@ abstract class ViewsFormBase extends FormBase implements ViewsFormInterface {
     else {
       $response = new AjaxResponse();
       $response->addCommand(new CloseModalDialogCommand());
-      $response->addCommand(new Ajax\ShowButtonsCommand());
+      $response->addCommand(new Ajax\ShowButtonsCommand(!empty($view->changed)));
       $response->addCommand(new Ajax\TriggerPreviewCommand());
       if (!empty($form_state['#page_title'])) {
         $response->addCommand(new Ajax\ReplaceTitleCommand($form_state['#page_title']));