class AjaxTestController

class AjaxTestController {
    
    /**
     * Example content for dialog testing.
     *
     * @return array
     *   Renderable array of AJAX dialog contents.
     */
    public static function dialogContents() {
        // This is a regular render array; the keys do not have special meaning.
        $content = [
            '#title' => '<em>AJAX Dialog & contents</em>',
            'content' => [
                '#markup' => 'Example message',
            ],
            'cancel' => [
                '#type' => 'link',
                '#title' => 'Cancel',
                '#url' => Url::fromRoute('<front>'),
                '#attributes' => [
                    // This is a special class to which JavaScript assigns dialog closing
                    // behavior.
'class' => [
                        'dialog-cancel',
                    ],
                ],
            ],
        ];
        return $content;
    }
    
    /**
     * Example content for testing the wrapper of the response.
     *
     * @param string $type
     *   Type of response.
     *
     * @return array
     *   Renderable array of AJAX response contents.
     */
    public function renderTypes($type) {
        return [
            '#title' => '<em>AJAX Dialog & contents</em>',
            'content' => [
                '#type' => 'inline_template',
                '#template' => $this->getRenderTypes()[$type]['render'],
            ],
        ];
    }
    
    /**
     * Returns a render array of links that directly Drupal.ajax().
     *
     * @return array
     *   Renderable array of AJAX response contents.
     */
    public function insertLinksBlockWrapper() {
        $methods = [
            'html',
            'replaceWith',
        ];
        $build['links'] = [
            'ajax_target' => [
                '#markup' => '<div class="ajax-target-wrapper"><div id="ajax-target">Target</div></div>',
            ],
            'links' => [
                '#theme' => 'links',
                '#attached' => [
                    'library' => [
                        'ajax_test/ajax_insert',
                    ],
                ],
            ],
        ];
        foreach ($methods as $method) {
            foreach ($this->getRenderTypes() as $type => $item) {
                $class = 'ajax-insert';
                $build['links']['links']['#links']["{$method}-{$type}"] = [
                    'title' => "Link {$method} {$type}",
                    'url' => Url::fromRoute('ajax_test.ajax_render_types', [
                        'type' => $type,
                    ]),
                    'attributes' => [
                        'class' => [
                            $class,
                        ],
                        'data-method' => $method,
                        'data-effect' => $item['effect'],
                    ],
                ];
            }
        }
        return $build;
    }
    
    /**
     * Returns a render array of links that directly Drupal.ajax().
     *
     * @return array
     *   Renderable array of AJAX response contents.
     */
    public function insertLinksInlineWrapper() {
        $methods = [
            'html',
            'replaceWith',
        ];
        $build['links'] = [
            'ajax_target' => [
                '#markup' => '<div class="ajax-target-wrapper"><span id="ajax-target-inline">Target inline</span></div>',
            ],
            'links' => [
                '#theme' => 'links',
                '#attached' => [
                    'library' => [
                        'ajax_test/ajax_insert',
                    ],
                ],
            ],
        ];
        foreach ($methods as $method) {
            foreach ($this->getRenderTypes() as $type => $item) {
                $class = 'ajax-insert-inline';
                $build['links']['links']['#links']["{$method}-{$type}"] = [
                    'title' => "Link {$method} {$type}",
                    'url' => Url::fromRoute('ajax_test.ajax_render_types', [
                        'type' => $type,
                    ]),
                    'attributes' => [
                        'class' => [
                            $class,
                        ],
                        'data-method' => $method,
                        'data-effect' => $item['effect'],
                    ],
                ];
            }
        }
        return $build;
    }
    
    /**
     * Returns a render array that will be rendered by AjaxRenderer.
     *
     * Verifies that the response incorporates JavaScript settings generated
     * during the page request by adding a dummy setting.
     */
    public function render() {
        return [
            '#attached' => [
                'library' => [
                    'core/drupalSettings',
                ],
                'drupalSettings' => [
                    'ajax' => 'test',
                ],
            ],
        ];
    }
    
    /**
     * Returns the used theme.
     */
    public function theme() {
        return [
            '#markup' => 'Current theme: ' . \Drupal::theme()->getActiveTheme()
                ->getName(),
        ];
    }
    
    /**
     * Returns an AjaxResponse; settings command set last.
     *
     * Helps verifying AjaxResponse reorders commands to ensure correct execution.
     */
    public function order() {
        $response = new AjaxResponse();
        // HTML insertion command.
        $response->addCommand(new HtmlCommand('body', 'Hello, world!'));
        $build['#attached']['library'][] = 'ajax_test/order';
        $response->setAttachments($build['#attached']);
        return $response;
    }
    
    /**
     * Returns an AjaxResponse with alert command.
     *
     * @param \Symfony\Component\HttpFoundation\Request $request
     *   The current request object.
     *
     * @return \Drupal\Core\Ajax\AjaxResponse
     *   The JSON response object.
     */
    public function renderError(Request $request) {
        $message = '';
        $query = $request->query;
        if ($query->has('message')) {
            $message = $query->get('message');
        }
        $response = new AjaxResponse();
        $response->addCommand(new AlertCommand($message));
        return $response;
    }
    
    /**
     * Returns a render array of form elements and links for dialog.
     */
    public function dialog() {
        // Add two wrapper elements for testing non-modal dialogs. Modal dialogs use
        // the global drupal-modal wrapper by default.
        $build['dialog_wrappers'] = [
            '#markup' => '<div id="ajax-test-dialog-wrapper-1"></div><div id="ajax-test-dialog-wrapper-2"></div>',
        ];
        // Dialog behavior applied to a button.
        $build['form'] = \Drupal::formBuilder()->getForm('Drupal\\ajax_test\\Form\\AjaxTestDialogForm');
        // Dialog behavior applied to a #type => 'link'.
        $build['link'] = [
            '#type' => 'link',
            '#title' => 'Link 1 (modal)',
            '#url' => Url::fromRoute('ajax_test.dialog_contents'),
            '#attributes' => [
                'class' => [
                    'use-ajax',
                ],
                'data-dialog-type' => 'modal',
            ],
        ];
        // Dialog behavior applied to links rendered by links.html.twig.
        $build['links'] = [
            '#theme' => 'links',
            '#links' => [
                'link2' => [
                    'title' => 'Link 2 (modal)',
                    'url' => Url::fromRoute('ajax_test.dialog_contents'),
                    'attributes' => [
                        'class' => [
                            'use-ajax',
                        ],
                        'data-dialog-type' => 'modal',
                        'data-dialog-options' => json_encode([
                            'width' => 400,
                        ]),
                    ],
                ],
                'link3' => [
                    'title' => 'Link 3 (non-modal)',
                    'url' => Url::fromRoute('ajax_test.dialog_contents'),
                    'attributes' => [
                        'class' => [
                            'use-ajax',
                        ],
                        'data-dialog-type' => 'dialog',
                        'data-dialog-options' => json_encode([
                            'target' => 'ajax-test-dialog-wrapper-1',
                            'width' => 800,
                        ]),
                    ],
                ],
                'link4' => [
                    'title' => 'Link 4 (close non-modal if open)',
                    'url' => Url::fromRoute('ajax_test.dialog_close'),
                    'attributes' => [
                        'class' => [
                            'use-ajax',
                        ],
                        'data-dialog-type' => 'modal',
                    ],
                ],
                'link5' => [
                    'title' => 'Link 5 (form)',
                    'url' => Url::fromRoute('ajax_test.dialog_form'),
                    'attributes' => [
                        'class' => [
                            'use-ajax',
                        ],
                        'data-dialog-type' => 'modal',
                    ],
                ],
                'link6' => [
                    'title' => 'Link 6 (entity form)',
                    'url' => Url::fromRoute('contact.form_add'),
                    'attributes' => [
                        'class' => [
                            'use-ajax',
                        ],
                        'data-dialog-type' => 'modal',
                        'data-dialog-options' => json_encode([
                            'width' => 800,
                            'height' => 500,
                        ]),
                    ],
                ],
                'link7' => [
                    'title' => 'Link 7 (non-modal, no target)',
                    'url' => Url::fromRoute('ajax_test.dialog_contents'),
                    'attributes' => [
                        'class' => [
                            'use-ajax',
                        ],
                        'data-dialog-type' => 'dialog',
                        'data-dialog-options' => json_encode([
                            'width' => 800,
                        ]),
                    ],
                ],
                'link8' => [
                    'title' => 'Link 8 (ajax)',
                    'url' => Url::fromRoute('ajax_test.admin.theme'),
                    'attributes' => [
                        'class' => [
                            'use-ajax',
                        ],
                        'data-dialog-type' => 'modal',
                        'data-dialog-options' => json_encode([
                            'width' => 400,
                        ]),
                    ],
                ],
            ],
        ];
        return $build;
    }
    
    /**
     * Returns an AjaxResponse with command to close dialog.
     *
     * @return \Drupal\Core\Ajax\AjaxResponse
     *   The JSON response object.
     */
    public function dialogClose() {
        $response = new AjaxResponse();
        $response->addCommand(new CloseDialogCommand('#ajax-test-dialog-wrapper-1'));
        return $response;
    }
    
    /**
     * Render types.
     *
     * @return array
     *   Render types.
     */
    protected function getRenderTypes() {
        $render_single_root = [
            'pre-wrapped-div' => '<div class="pre-wrapped">pre-wrapped<script> var test;</script></div>',
            'pre-wrapped-span' => '<span class="pre-wrapped">pre-wrapped<script> var test;</script></span>',
            'pre-wrapped-whitespace' => ' <div class="pre-wrapped-whitespace">pre-wrapped-whitespace</div>' . "\r\n",
            'not-wrapped' => 'not-wrapped',
            'comment-string-not-wrapped' => '<!-- COMMENT -->comment-string-not-wrapped',
            'comment-not-wrapped' => '<!-- COMMENT --><div class="comment-not-wrapped">comment-not-wrapped</div>',
            'svg' => '<svg xmlns="http://www.w3.org/2000/svg" width="10" height="10"><rect x="0" y="0" height="10" width="10" fill="green"></rect></svg>',
            'empty' => '',
        ];
        $render_multiple_root = [
            'mixed' => ' foo <!-- COMMENT -->  foo bar<div class="a class"><p>some string</p></div> additional not wrapped strings, <!-- ANOTHER COMMENT --> <p>final string</p>',
            'top-level-only' => '<div>element #1</div><div>element #2</div>',
            'top-level-only-pre-whitespace' => ' <div>element #1</div><div>element #2</div> ',
            'top-level-only-middle-whitespace-span' => '<span>element #1</span> <span>element #2</span>',
            'top-level-only-middle-whitespace-div' => '<div>element #1</div> <div>element #2</div>',
        ];
        $render_info = [];
        foreach ($render_single_root as $key => $render) {
            $render_info[$key] = [
                'render' => $render,
                'effect' => 'fade',
            ];
        }
        foreach ($render_multiple_root as $key => $render) {
            $render_info[$key] = [
                'render' => $render,
                'effect' => 'none',
            ];
            $render_info["{$key}--effect"] = [
                'render' => $render,
                'effect' => 'fade',
            ];
        }
        return $render_info;
    }
    
    /**
     * Returns a page from which to test Ajax global events.
     *
     * @return array
     *   The render array.
     */
    public function globalEvents() {
        return [
            '#attached' => [
                'library' => [
                    'ajax_test/global_events',
                ],
            ],
            '#markup' => implode('', [
                '<div id="test_global_events_log"></div>',
                '<a id="test_global_events_drupal_ajax_link" class="use-ajax" href="' . Url::fromRoute('ajax_test.global_events_clear_log')->toString() . '">Drupal Ajax</a>',
                '<div id="test_global_events_log2"></div>',
            ]),
        ];
    }
    
    /**
     * Returns an AjaxResponse with command to clear the 'test_global_events_log'.
     *
     * @return \Drupal\Core\Ajax\AjaxResponse
     *   The JSON response object.
     */
    public function globalEventsClearLog() {
        $response = new AjaxResponse();
        $response->addCommand(new HtmlCommand('#test_global_events_log', ''));
        return $response;
    }
    
    /**
     * Callback to provide an exception via Ajax.
     *
     * @throws \Exception
     *   The expected exception.
     */
    public function throwException() {
        throw new \Exception('This is an exception.');
    }
    
    /**
     * Provides an Ajax link for the exception.
     *
     * @return array
     *   The Ajax link.
     */
    public function exceptionLink() {
        return [
            '#type' => 'link',
            '#url' => Url::fromRoute('ajax_test.throw_exception'),
            '#title' => 'Ajax Exception',
            '#attributes' => [
                'class' => [
                    'use-ajax',
                ],
            ],
            '#attached' => [
                'library' => [
                    'core/drupal.ajax',
                ],
            ],
        ];
    }
    
    /**
     * Provides an Ajax link used with different HTTP methods.
     *
     * @return array
     *   The AJAX link.
     */
    public function httpMethods() : array {
        return [
            '#type' => 'link',
            '#title' => 'Link',
            '#url' => Url::fromRoute('ajax_test.http_methods.dialog'),
            '#attributes' => [
                'class' => [
                    'use-ajax',
                ],
                'data-dialog-type' => 'modal',
                'data-dialog-options' => Json::encode([
                    'width' => 800,
                ]),
                // Use this state var to change the HTTP method in tests.
                // @see \Drupal\FunctionalJavascriptTests\Ajax\DialogTest::testHttpMethod()
'data-ajax-http-method' => \Drupal::state()->get('ajax_test.http_method', 'POST'),
            ],
            '#attached' => [
                'library' => [
                    'core/drupal.dialog.ajax',
                ],
            ],
        ];
    }
    
    /**
     * Provides a modal dialog to test links with different HTTP methods.
     *
     * @return array
     *   The render array.
     */
    public function httpMethodsDialog() : array {
        return [
            '#markup' => 'Modal dialog contents',
        ];
    }
    
    /**
     * Provides an Ajax link that open in dialog.
     *
     * @return array
     *   The AJAX link.
     */
    public function linkPageDialog() : array {
        return [
            '#type' => 'link',
            '#title' => 'Modal link',
            '#url' => Url::fromRoute('ajax_test.link_page.dialog_contents'),
            '#attributes' => [
                'class' => [
                    'use-ajax',
                ],
                'data-dialog-type' => 'dialog',
            ],
            '#attached' => [
                'library' => [
                    'core/drupal.dialog.ajax',
                ],
            ],
        ];
    }
    
    /**
     * Provides a title to the page.
     *
     * @return string
     *   The page title.
     */
    public function linkPageDialogTitle() : string {
        $title = 'Dialog link page title';
        return $title;
    }

}