class FieldLayoutTest

class FieldLayoutTest extends WebDriverTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'field_layout',
    'field_ui',
    'field_layout_test',
    'layout_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $entity = EntityTest::create([
      'name' => 'The name for this entity',
      'field_test_text' => [
        [
          'value' => 'The field test text value',
        ],
      ],
    ]);
    $entity->save();
    $this->drupalLogin($this->drupalCreateUser([
      'access administration pages',
      'view test entity',
      'administer entity_test content',
      'administer entity_test fields',
      'administer entity_test display',
      'administer entity_test form display',
      'view the administration theme',
    ]));
  }
  
  /**
   * Tests that layouts are unique per view mode.
   */
  public function testEntityViewModes() : void {
    // By default, the field is not visible.
    $this->drupalGet('entity_test/1/test');
    $this->assertSession()
      ->elementNotExists('css', '.layout__region--content ');
    $this->drupalGet('entity_test/1');
    $this->assertSession()
      ->elementNotExists('css', '.layout__region--content');
    // Change the layout for the "test" view mode. See
    // core.entity_view_mode.entity_test.test.yml.
    $this->drupalGet('entity_test/structure/entity_test/display');
    $this->click('#edit-modes');
    $this->getSession()
      ->getPage()
      ->checkField('display_modes_custom[test]');
    $this->submitForm([], 'Save');
    $this->clickLink('configure them');
    $this->getSession()
      ->getPage()
      ->pressButton('Show row weights');
    $this->getSession()
      ->getPage()
      ->selectFieldOption('fields[field_test_text][region]', 'content');
    $this->submitForm([], 'Save');
    // Each view mode has a different layout.
    $this->drupalGet('entity_test/1/test');
    $this->assertSession()
      ->elementTextContains('css', '.layout__region--content', 'The field test text value');
    $this->drupalGet('entity_test/1');
    $this->assertSession()
      ->elementNotExists('css', '.layout__region--content');
  }
  
  /**
   * Tests the use of field layout for entity form displays.
   */
  public function testEntityForm() : void {
    // By default, the one-column layout is used.
    $this->drupalGet('entity_test/manage/1/edit');
    $this->assertFieldInRegion('field_test_text[0][value]', 'content');
    // The one-column layout is in use.
    $this->drupalGet('entity_test/structure/entity_test/form-display');
    $this->assertEquals([
      'Content',
      'Disabled',
    ], $this->getRegionTitles());
    // Switch the layout to two columns.
    $this->click('#edit-field-layouts');
    $this->getSession()
      ->getPage()
      ->selectFieldOption('field_layout', 'layout_twocol');
    $this->assertSession()
      ->assertWaitOnAjaxRequest();
    $this->submitForm([], 'Save');
    // The field is moved to the default region for the new layout.
    $this->assertSession()
      ->pageTextContains('Your settings have been saved.');
    $this->assertEquals([
      'Top',
      'First',
      'Second',
      'Bottom',
      'Disabled',
    ], $this->getRegionTitles());
    $this->drupalGet('entity_test/manage/1/edit');
    // No fields are visible, and the regions don't display when empty.
    $this->assertFieldInRegion('field_test_text[0][value]', 'first');
    $this->assertSession()
      ->elementExists('css', '.layout__region--first .field--name-field-test-text');
    // After a refresh the new regions are still there.
    $this->drupalGet('entity_test/structure/entity_test/form-display');
    $this->assertEquals([
      'Top',
      'First',
      'Second',
      'Bottom',
      'Disabled',
    ], $this->getRegionTitles());
    $this->assertSession()
      ->waitForElement('css', '.tabledrag-handle');
    $id = $this->getSession()
      ->getPage()
      ->find('css', '[name="form_build_id"]')
      ->getValue();
    // Drag the field to the second region.
    $field_test_text_row = $this->getSession()
      ->getPage()
      ->find('css', '#field-test-text');
    $second_region_row = $this->getSession()
      ->getPage()
      ->find('css', '.region-second-message');
    $field_test_text_row->find('css', '.handle')
      ->dragTo($second_region_row);
    $this->assertSession()
      ->assertWaitOnAjaxRequest();
    $this->assertSession()
      ->waitForElement('css', "[name='form_build_id']:not([value='{$id}'])");
    $this->submitForm([], 'Save');
    $this->assertSession()
      ->pageTextContains('Your settings have been saved.');
    // The new layout is used.
    $this->drupalGet('entity_test/manage/1/edit');
    $this->assertSession()
      ->elementExists('css', '.layout__region--second .field--name-field-test-text');
    $this->assertFieldInRegion('field_test_text[0][value]', 'second');
    // Tests if this layout works in an embedded context.
    $this->drupalGet('/field-layout-embedded-form');
    $this->assertSession()
      ->elementExists('css', '.layout__region--second .field--name-field-test-text');
    $this->assertFieldInRegion('foo[field_test_text][0][value]', 'second');
    // Move the field to the second region without tabledrag.
    $this->drupalGet('entity_test/structure/entity_test/form-display');
    $this->getSession()
      ->getPage()
      ->pressButton('Show row weights');
    $this->getSession()
      ->getPage()
      ->selectFieldOption('fields[field_test_text][region]', 'second');
    $this->submitForm([], 'Save');
    $this->assertSession()
      ->pageTextContains('Your settings have been saved.');
    // The updated region is used.
    $this->drupalGet('entity_test/manage/1/edit');
    $this->assertFieldInRegion('field_test_text[0][value]', 'second');
    // The layout is still in use without Field UI.
    $this->container
      ->get('module_installer')
      ->uninstall([
      'field_ui',
    ]);
    $this->drupalGet('entity_test/manage/1/edit');
    $this->assertFieldInRegion('field_test_text[0][value]', 'second');
  }
  
  /**
   * Tests the use of field layout for entity view displays.
   */
  public function testEntityView() : void {
    // The one-column layout is in use.
    $this->drupalGet('entity_test/structure/entity_test/display');
    $this->assertEquals([
      'Content',
      'Disabled',
    ], $this->getRegionTitles());
    // Switch the layout to two columns.
    $this->click('#edit-field-layouts');
    $this->getSession()
      ->getPage()
      ->selectFieldOption('field_layout', 'layout_twocol');
    $this->assertSession()
      ->assertWaitOnAjaxRequest();
    $this->submitForm([], 'Save');
    $this->assertSession()
      ->pageTextContains('Your settings have been saved.');
    $this->assertEquals([
      'Top',
      'First',
      'Second',
      'Bottom',
      'Disabled',
    ], $this->getRegionTitles());
    $this->drupalGet('entity_test/1');
    // No fields are visible, and the regions don't display when empty.
    $this->assertSession()
      ->elementNotExists('css', '.layout--twocol');
    $this->assertSession()
      ->elementNotExists('css', '.layout__region');
    $this->assertSession()
      ->pageTextNotContains('The field test text value');
    // After a refresh the new regions are still there.
    $this->drupalGet('entity_test/structure/entity_test/display');
    $this->assertEquals([
      'Top',
      'First',
      'Second',
      'Bottom',
      'Disabled',
    ], $this->getRegionTitles());
    $this->assertSession()
      ->waitForElement('css', '.tabledrag-handle');
    $id = $this->getSession()
      ->getPage()
      ->find('css', '[name="form_build_id"]')
      ->getValue();
    // Drag the field to the first region.
    $this->assertTrue($this->assertSession()
      ->optionExists('fields[field_test_text][region]', 'hidden')
      ->isSelected());
    $field_test_text_row = $this->getSession()
      ->getPage()
      ->find('css', '#field-test-text');
    $first_region_row = $this->getSession()
      ->getPage()
      ->find('css', '.region-first-message');
    $field_test_text_row->find('css', '.handle')
      ->dragTo($first_region_row);
    $this->assertSession()
      ->assertWaitOnAjaxRequest();
    $this->assertFalse($this->assertSession()
      ->optionExists('fields[field_test_text][region]', 'hidden')
      ->isSelected());
    $this->assertSession()
      ->waitForElement('css', "[name='form_build_id']:not([value='{$id}'])");
    $this->submitForm([], 'Save');
    $this->assertSession()
      ->pageTextContains('Your settings have been saved.');
    // The new layout is used.
    $this->drupalGet('entity_test/1');
    $this->assertSession()
      ->elementExists('css', '.layout--twocol');
    $this->assertSession()
      ->elementTextContains('css', '.layout__region--first', 'The field test text value');
    // Move the field to the second region without tabledrag.
    $this->drupalGet('entity_test/structure/entity_test/display');
    $this->getSession()
      ->getPage()
      ->pressButton('Show row weights');
    $this->getSession()
      ->getPage()
      ->selectFieldOption('fields[field_test_text][region]', 'second');
    $this->submitForm([], 'Save');
    $this->assertSession()
      ->pageTextContains('Your settings have been saved.');
    // The updated region is used.
    $this->drupalGet('entity_test/1');
    $this->assertSession()
      ->elementTextContains('css', '.layout__region--second', 'The field test text value');
    // The layout is still in use without Field UI.
    $this->container
      ->get('module_installer')
      ->uninstall([
      'field_ui',
    ]);
    $this->drupalGet('entity_test/1');
    $this->assertSession()
      ->elementExists('css', '.layout--twocol');
    $this->assertSession()
      ->elementTextContains('css', '.layout__region--second', 'The field test text value');
  }
  
  /**
   * Tests layout plugins with forms.
   */
  public function testLayoutForms() : void {
    $this->drupalGet('entity_test/structure/entity_test/display');
    // Switch to a field layout with settings.
    $this->click('#edit-field-layouts');
    // Test switching between layouts with and without forms.
    $this->getSession()
      ->getPage()
      ->selectFieldOption('field_layout', 'layout_test_plugin');
    $this->assertSession()
      ->assertExpectedAjaxRequest(1);
    $this->assertSession()
      ->fieldExists('settings_wrapper[layout_settings][setting_1]');
    $this->getSession()
      ->getPage()
      ->selectFieldOption('field_layout', 'layout_test_2col');
    $this->assertSession()
      ->assertExpectedAjaxRequest(2);
    $this->assertSession()
      ->fieldNotExists('settings_wrapper[layout_settings][setting_1]');
    $this->getSession()
      ->getPage()
      ->selectFieldOption('field_layout', 'layout_test_plugin');
    $this->assertSession()
      ->assertExpectedAjaxRequest(3);
    $this->assertSession()
      ->fieldExists('settings_wrapper[layout_settings][setting_1]');
    // Move the test field to the content region.
    $this->getSession()
      ->getPage()
      ->pressButton('Show row weights');
    $this->getSession()
      ->getPage()
      ->selectFieldOption('fields[field_test_text][region]', 'content');
    $this->submitForm([], 'Save');
    $this->drupalGet('entity_test/1');
    $this->assertSession()
      ->pageTextContains('Blah: Default');
    // Update the field layout settings.
    $this->drupalGet('entity_test/structure/entity_test/display');
    $this->click('#edit-field-layouts');
    $this->getSession()
      ->getPage()
      ->fillField('settings_wrapper[layout_settings][setting_1]', 'Test text');
    $this->submitForm([], 'Save');
    $this->drupalGet('entity_test/1');
    $this->assertSession()
      ->pageTextContains('Blah: Test text');
  }
  
  /**
   * Tests changing the formatter and region at the same time.
   */
  public function testChangingFormatterAndRegion() : void {
    $assert_session = $this->assertSession();
    $page = $this->getSession()
      ->getPage();
    // Add the test field to the content region.
    $this->drupalGet('entity_test/structure/entity_test/display');
    $page->find('css', '#field-test-text .handle')
      ->dragTo($page->find('css', '.region-content-message'));
    $assert_session->assertWaitOnAjaxRequest();
    $page->pressButton('Save');
    $assert_session->fieldValueEquals('fields[field_test_text][region]', 'content');
    $assert_session->fieldValueEquals('fields[field_test_text][type]', 'text_default');
    // Switch the layout to two columns.
    $this->click('#edit-field-layouts');
    $page->selectFieldOption('field_layout', 'layout_twocol');
    $assert_session->assertWaitOnAjaxRequest();
    $page->pressButton('Save');
    $assert_session->fieldValueEquals('fields[field_test_text][region]', 'first');
    // Change the formatter and move to another region.
    $page->selectFieldOption('fields[field_test_text][type]', 'text_trimmed');
    $assert_session->assertWaitOnAjaxRequest();
    $page->find('css', '#field-test-text .handle')
      ->dragTo($page->find('css', '.region-second-message'));
    $assert_session->assertWaitOnAjaxRequest();
    $page->pressButton('Save');
    // Assert that both the formatter and region change are persisted.
    $assert_session->fieldValueEquals('fields[field_test_text][region]', 'second');
    $assert_session->fieldValueEquals('fields[field_test_text][type]', 'text_trimmed');
  }
  
  /**
   * Gets the region titles on the page.
   *
   * @return string[]
   *   An array of region titles.
   */
  protected function getRegionTitles() {
    $region_titles = [];
    $region_title_elements = $this->getSession()
      ->getPage()
      ->findAll('css', '.region-title td');
    /** @var \Behat\Mink\Element\NodeElement[] $region_title_elements */
    foreach ($region_title_elements as $region_title_element) {
      $region_titles[] = $region_title_element->getText();
    }
    return $region_titles;
  }
  
  /**
   * Asserts that a field exists in a given region.
   *
   * @param string $field_selector
   *   The field selector, one of field id|name|label|value.
   * @param string $region_name
   *   The machine name of the region.
   *
   * @internal
   */
  protected function assertFieldInRegion(string $field_selector, string $region_name) : void {
    $region_element = $this->getSession()
      ->getPage()
      ->find('css', ".layout__region--{$region_name}");
    $this->assertNotNull($region_element);
    $this->assertSession()
      ->fieldExists($field_selector, $region_element);
  }

}