function ConfigHandler::buildForm

Overrides FormInterface::buildForm

File

core/modules/views_ui/src/Form/Ajax/ConfigHandler.php, line 52

Class

ConfigHandler

Provides a form for configuring an item in the Views UI.

Namespace

Code

public function buildForm(array $form, FormStateInterface $form_state, Request $request = NULL) {
    
    /** @var \Drupal\views\Entity\View $view */
    $view = $form_state->get('view');
    $display_id = $form_state->get('display_id');
    $type = $form_state->get('type');
    $id = $form_state->get('id');
    $form = [
        'options' => [
            '#tree' => TRUE,
            '#theme_wrappers' => [
                'container',
            ],
            '#attributes' => [
                'class' => [
                    'scroll',
                ],
                'data-drupal-views-scroll' => TRUE,
            ],
        ],
    ];
    $executable = $view->getExecutable();
    $save_ui_cache = FALSE;
    if (!$executable->setDisplay($display_id)) {
        $form['markup'] = [
            '#markup' => $this->t('Invalid display id @display', [
                '@display' => $display_id,
            ]),
        ];
        return $form;
    }
    $item = $executable->getHandler($display_id, $type, $id);
    if ($item) {
        $handler = $executable->display_handler
            ->getHandler($type, $id);
        if (empty($handler)) {
            $form['markup'] = [
                '#markup' => $this->t("Error: handler for @table > @field doesn't exist!", [
                    '@table' => $item['table'],
                    '@field' => $item['field'],
                ]),
            ];
        }
        else {
            $types = ViewExecutable::getHandlerTypes();
            // If this item can come from the default display, show a dropdown
            // that lets the user choose which display the changes should apply to.
            if ($executable->display_handler
                ->defaultableSections($types[$type]['plural'])) {
                $section = $types[$type]['plural'];
                $form_state->set('section', $section);
                views_ui_standard_display_dropdown($form, $form_state, $section);
            }
            // A whole bunch of code to figure out what relationships are valid for
            // this item.
            $relationships = $executable->display_handler
                ->getOption('relationships');
            $relationship_options = [];
            foreach ($relationships as $relationship) {
                // relationships can't link back to self. But also, due to ordering,
                // relationships can only link to prior relationships.
                if ($type == 'relationship' && $id == $relationship['id']) {
                    break;
                }
                $relationship_handler = Views::handlerManager('relationship')->getHandler($relationship);
                // ignore invalid/broken relationships.
                if (empty($relationship_handler)) {
                    continue;
                }
                // If this relationship is valid for this type, add it to the list.
                $data = Views::viewsData()->get($relationship['table']);
                if (isset($data[$relationship['field']]['relationship']['base']) && ($base = $data[$relationship['field']]['relationship']['base'])) {
                    $base_fields = Views::viewsDataHelper()->fetchFields($base, $type, $executable->display_handler
                        ->useGroupBy());
                    if (isset($base_fields[$item['table'] . '.' . $item['field']])) {
                        $relationship_handler->init($executable, $executable->display_handler, $relationship);
                        $relationship_options[$relationship['id']] = $relationship_handler->adminLabel();
                    }
                }
            }
            if (!empty($relationship_options)) {
                // Make sure the existing relationship is even valid. If not, force
                // it to none.
                $base_fields = Views::viewsDataHelper()->fetchFields($view->get('base_table'), $type, $executable->display_handler
                    ->useGroupBy());
                if (isset($base_fields[$item['table'] . '.' . $item['field']])) {
                    $relationship_options = array_merge([
                        'none' => $this->t('Do not use a relationship'),
                    ], $relationship_options);
                }
                $rel = empty($item['relationship']) ? 'none' : $item['relationship'];
                if (empty($relationship_options[$rel])) {
                    // Pick the first relationship.
                    $rel = key($relationship_options);
                    // We want this relationship option to get saved even if the user
                    // skips submitting the form.
                    $executable->setHandlerOption($display_id, $type, $id, 'relationship', $rel);
                    $save_ui_cache = TRUE;
                    // Re-initialize with new relationship.
                    $item['relationship'] = $rel;
                    $handler->init($executable, $executable->display_handler, $item);
                }
                $form['options']['relationship'] = [
                    '#type' => 'select',
                    '#title' => $this->t('Relationship'),
                    '#options' => $relationship_options,
                    '#default_value' => $rel,
                    '#weight' => -500,
                ];
            }
            else {
                $form['options']['relationship'] = [
                    '#type' => 'value',
                    '#value' => 'none',
                ];
            }
            $form['#title'] = $this->t('Configure @type: @item', [
                '@type' => $types[$type]['lstitle'],
                '@item' => $handler->adminLabel(),
            ]);
            if (!empty($handler->definition['help'])) {
                $form['options']['form_description'] = [
                    '#markup' => $handler->definition['help'],
                    '#theme_wrappers' => [
                        'container',
                    ],
                    '#attributes' => [
                        'class' => [
                            'js-form-item form-item description',
                        ],
                    ],
                    '#weight' => -1000,
                ];
            }
            $form['#section'] = $display_id . '-' . $type . '-' . $id;
            // Get form from the handler.
            $handler->buildOptionsForm($form['options'], $form_state);
            $form_state->set('handler', $handler);
        }
        $name = $form_state->get('update_name');
        $view->getStandardButtons($form, $form_state, 'views_ui_config_item_form', $name);
        // Add a 'remove' button.
        $form['actions']['remove'] = [
            '#type' => 'submit',
            '#value' => $this->t('Remove'),
            '#submit' => [
                [
                    $this,
                    'remove',
                ],
            ],
            '#limit_validation_errors' => [
                [
                    'override',
                ],
            ],
            '#button_type' => 'danger',
        ];
    }
    if ($save_ui_cache) {
        $view->cacheSet();
    }
    return $form;
}