class CKEditorIntegrationTest

class CKEditorIntegrationTest extends WebDriverTestBase {
    use CKEditorTestTrait;
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * The account.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $account;
    
    /**
     * The FilterFormat config entity used for testing.
     *
     * @var \Drupal\filter\FilterFormatInterface
     */
    protected $filterFormat;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'node',
        'ckeditor',
        'filter',
        'ckeditor_test',
    ];
    
    /**
     * The theme to install as the default for testing.
     *
     * @var string
     *
     * @todo This test's reliance on classes makes Stark a bad fit as a base theme.
     *   Change the default theme to Starterkit once it is stable.
     *
     * @see https://www.drupal.org/project/drupal/issues/3275827
     */
    protected function setUp() : void {
        parent::setUp();
        // Create a text format and associate CKEditor.
        $this->filterFormat = FilterFormat::create([
            'format' => 'filtered_html',
            'name' => 'Filtered HTML',
            'weight' => 0,
        ]);
        $this->filterFormat
            ->save();
        Editor::create([
            'format' => 'filtered_html',
            'editor' => 'ckeditor',
        ])->save();
        // Create a node type for testing.
        NodeType::create([
            'type' => 'page',
            'name' => 'page',
        ])->save();
        $field_storage = FieldStorageConfig::loadByName('node', 'body');
        // Create a body field instance for the 'page' node type.
        FieldConfig::create([
            'field_storage' => $field_storage,
            'bundle' => 'page',
            'label' => 'Body',
            'settings' => [
                'display_summary' => TRUE,
            ],
            'required' => TRUE,
        ])->save();
        // Assign widget settings for the 'default' form mode.
        EntityFormDisplay::create([
            'targetEntityType' => 'node',
            'bundle' => 'page',
            'mode' => 'default',
            'status' => TRUE,
        ])->setComponent('body', [
            'type' => 'text_textarea_with_summary',
        ])
            ->save();
        $this->account = $this->drupalCreateUser([
            'administer nodes',
            'create page content',
            'use text format filtered_html',
        ]);
        $this->drupalLogin($this->account);
    }
    
    /**
     * Tests if the fragment link to a textarea works with CKEditor enabled.
     */
    public function testFragmentLink() {
        $session = $this->getSession();
        $web_assert = $this->assertSession();
        $ckeditor_id = '#cke_edit-body-0-value';
        $this->drupalGet('node/add/page');
        $session->getPage();
        // Add a bottom margin to the title field to be sure the body field is not
        // visible.
        $session->executeScript("document.getElementById('edit-title-0-value').style.marginBottom = window.innerHeight*2 +'px';");
        $this->assertSession()
            ->waitForElementVisible('css', $ckeditor_id);
        // Check that the CKEditor-enabled body field is currently not visible in
        // the viewport.
        $web_assert->assertNotVisibleInViewport('css', $ckeditor_id, 'topLeft', 'CKEditor-enabled body field is visible.');
        $before_url = $session->getCurrentUrl();
        // Trigger a hash change with as target the hidden textarea.
        $session->executeScript("location.hash = '#edit-body-0-value';");
        // Check that the CKEditor-enabled body field is visible in the viewport.
        $web_assert->assertVisibleInViewport('css', $ckeditor_id, 'topLeft', 'CKEditor-enabled body field is not visible.');
        // Use JavaScript to go back in the history instead of
        // \Behat\Mink\Session::back() because that function doesn't work after a
        // hash change.
        $session->executeScript("history.back();");
        $after_url = $session->getCurrentUrl();
        // Check that going back in the history worked.
        self::assertEquals($before_url, $after_url, 'History back works.');
    }
    
    /**
     * Tests if the Image button appears and works as expected.
     */
    public function testDrupalImageDialog() {
        $session = $this->getSession();
        $web_assert = $this->assertSession();
        $this->drupalGet('node/add/page');
        $session->getPage();
        // Asserts the Image button is present in the toolbar.
        $web_assert->elementExists('css', '#cke_edit-body-0-value .cke_button__drupalimage');
        // Asserts the image dialog opens when clicking the Image button.
        $this->click('.cke_button__drupalimage');
        $this->assertNotEmpty($web_assert->waitForElement('css', '.ui-dialog'));
        $web_assert->elementContains('css', '.ui-dialog .ui-dialog-titlebar', 'Insert Image');
    }
    
    /**
     * Tests if the Drupal Image Caption plugin appears and works as expected.
     */
    public function testDrupalImageCaptionDialog() {
        $web_assert = $this->assertSession();
        // Disable the caption filter.
        $this->filterFormat
            ->setFilterConfig('filter_caption', [
            'status' => FALSE,
        ]);
        $this->filterFormat
            ->save();
        // If the caption filter is disabled, its checkbox should be absent.
        $this->drupalGet('node/add/page');
        $this->waitForEditor();
        $this->pressEditorButton('drupalimage');
        $this->assertNotEmpty($web_assert->waitForElement('css', '.ui-dialog'));
        $web_assert->elementNotExists('css', '.ui-dialog input[name="attributes[hasCaption]"]');
        // Enable the caption filter again.
        $this->filterFormat
            ->setFilterConfig('filter_caption', [
            'status' => TRUE,
        ]);
        $this->filterFormat
            ->save();
        // If the caption filter is enabled, its checkbox should be present.
        $this->drupalGet('node/add/page');
        $this->waitForEditor();
        $this->pressEditorButton('drupalimage');
        $this->assertNotEmpty($web_assert->waitForElement('css', '.ui-dialog'));
        $web_assert->elementExists('css', '.ui-dialog input[name="attributes[hasCaption]"]');
    }
    
    /**
     * Tests if CKEditor is properly styled inside an off-canvas dialog.
     */
    public function testOffCanvasStyles() {
        $assert_session = $this->assertSession();
        $page = $this->getSession()
            ->getPage();
        $this->drupalGet('/ckeditor_test/off_canvas');
        // The "Add Node" link triggers an off-canvas dialog with an add node form
        // that includes CKEditor.
        $page->clickLink('Add Node');
        $assert_session->waitForElementVisible('css', '#drupal-off-canvas');
        $assert_session->assertWaitOnAjaxRequest();
        // Check the background color of two CKEditor elements to confirm they are
        // not overridden by the off-canvas css reset.
        $assert_session->elementExists('css', '.cke_top');
        $ckeditor_top_bg_color = $this->getSession()
            ->evaluateScript('window.getComputedStyle(document.getElementsByClassName(\'cke_top\')[0]).backgroundColor');
        $this->assertEquals('rgb(248, 248, 248)', $ckeditor_top_bg_color);
        $assert_session->elementExists('css', '.cke_button__source');
        $ckeditor_source_button_bg_color = $this->getSession()
            ->evaluateScript('window.getComputedStyle(document.getElementsByClassName(\'cke_button__source\')[0]).backgroundColor');
        $this->assertEquals('rgba(0, 0, 0, 0)', $ckeditor_source_button_bg_color);
        // Check that only one off-canvas style is cached in local storage and that
        // it gets updated with the cache-busting query string.
        $get_cache_keys = 'Object.keys(window.localStorage).filter(function (i) {return i.indexOf(\'Drupal.off-canvas.css.\') === 0})';
        $old_keys = $this->getSession()
            ->evaluateScript($get_cache_keys);
        // Flush the caches to ensure the new timestamp is altered into the
        // drupal.ckeditor library's javascript settings.
        $this->resetAll();
        // Normally flushing caches regenerates the cache busting query string, but
        // as it's based on the request time, it won't change within this test so
        // explicitly set it.
        \Drupal::state()->set('system.css_js_query_string', '0');
        $this->drupalGet('/ckeditor_test/off_canvas');
        $page->clickLink('Add Node');
        $assert_session->waitForElementVisible('css', '#drupal-off-canvas');
        $assert_session->assertWaitOnAjaxRequest();
        $new_keys = $this->getSession()
            ->evaluateScript($get_cache_keys);
        $this->assertCount(1, $old_keys, 'Only one off-canvas style was cached before clearing caches.');
        $this->assertCount(1, $new_keys, 'Only one off-canvas style was cached after clearing caches.');
        $this->assertNotEquals($old_keys, $new_keys, 'Clearing caches changed the off-canvas style cache key.');
    }

}