--- /dev/null
+<?php
+
+namespace Drupal\bootstrap_layouts\Plugin\Layout;
+
+use Drupal\Component\Utility\Html;
+use Drupal\Component\Utility\NestedArray;
+use Drupal\Component\Utility\Xss;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\layout_plugin\Plugin\Layout\LayoutBase;
+
+/**
+ * Layout class for all bootstrap layouts.
+ */
+class BootstrapLayoutsBase extends LayoutBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function __construct(array $configuration, $plugin_id, $plugin_definition) {
+ parent::__construct($configuration, $plugin_id, $plugin_definition);
+ }
+
+ /**
+ * Provides a default region definition.
+ *
+ * @return array
+ * Default region array.
+ */
+ protected function getRegionDefaults() {
+ return [
+ 'wrapper' => 'div',
+ 'classes' => [],
+ 'attributes' => '',
+ 'add_region_classes' => TRUE,
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function defaultConfiguration() {
+ $configuration = parent::defaultConfiguration();
+ $configuration += [
+ 'layout' => [
+ 'wrapper' => 'div',
+ 'classes' => ['row'],
+ 'attributes' => '',
+ 'add_layout_class' => TRUE,
+ ],
+ 'regions' => [],
+ ];
+ foreach ($this->getRegionDefinitions() as $region => $info) {
+ $region_configuration = [];
+ foreach (['wrapper', 'classes', 'attributes'] as $key) {
+ if (isset($info[$key])) {
+ $region_configuration[$key] = $info[$key];
+ }
+ }
+ $configuration['regions'][$region] = $region_configuration + $this->getRegionDefaults();
+ }
+ return $configuration;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getConfiguration() {
+ $configuration = $this->defaultConfiguration();
+
+ // Can't use parent::getConfiguration() here because array_merge() only
+ // merges the top levels. Nor can NestedArray::mergeDeep be used since it
+ // will add multiple classes (from default + config). Instead, the two
+ // top levels "layout" and "regions" must be merged using array_merge().
+ if (isset($this->configuration['layout'])) {
+ $configuration['layout'] = array_merge($configuration['layout'], $this->configuration['layout']);
+ }
+ if (isset($this->configuration['regions'])) {
+ $configuration['regions'] = array_merge($configuration['regions'], $this->configuration['regions']);
+ }
+
+ // Remove any region configuration that doesn't apply to current layout.
+ $regions = $this->getRegionNames();
+ foreach (array_keys($configuration['regions']) as $region) {
+ if (!isset($regions[$region])) {
+ unset($configuration['regions'][$region]);
+ }
+ }
+
+ return $configuration;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+ $form = parent::buildConfigurationForm($form, $form_state);
+ $configuration = $this->getConfiguration();
+
+ /** @var \Drupal\bootstrap_layouts\BootstrapLayoutsManager $bootstrap_layouts_manager */
+ $manager = \Drupal::getContainer()->get('plugin.manager.bootstrap_layouts');
+ $classes = $manager->getClassOptions();
+
+ $tokens = FALSE;
+ if (\Drupal::moduleHandler()->moduleExists('token')) {
+ $tokens = [
+ '#title' => $this->t('Tokens'),
+ '#type' => 'container',
+ ];
+ $tokens['help'] = [
+ '#theme' => 'token_tree_link',
+ '#token_types' => 'all',
+ '#global_types' => FALSE,
+ '#dialog' => TRUE,
+ ];
+ }
+
+ // Add wrappers.
+ $wrapper_options = [
+ 'div' => 'Div',
+ 'span' => 'Span',
+ 'section' => 'Section',
+ 'article' => 'Article',
+ 'header' => 'Header',
+ 'footer' => 'Footer',
+ 'aside' => 'Aside',
+ 'figure' => 'Figure',
+ ];
+
+ $form['layout'] = [
+ '#type' => 'container',
+ '#tree' => TRUE,
+ ];
+
+ $form['layout']['wrapper'] = [
+ '#type' => 'select',
+ '#title' => $this->t('Wrapper'),
+ '#options' => $wrapper_options,
+ '#default_value' => $form_state->getValue(['layout', 'wrapper'], $configuration['layout']['wrapper']),
+ ];
+
+ $form['layout']['classes'] = [
+ '#type' => 'select',
+ '#title' => $this->t('Classes'),
+ '#options' => $classes,
+ '#default_value' => $form_state->getValue(['layout', 'classes'], $configuration['layout']['classes']) ?: [],
+ '#multiple' => TRUE,
+ ];
+
+ $form['layout']['add_layout_class'] = [
+ '#type' => 'checkbox',
+ '#title' => $this->t('Add layout specific class: <code>@class</code>', ['@class' => Html::cleanCssIdentifier($this->getPluginId())]),
+ '#default_value' => (int) $form_state->getValue(['layout', 'add_layout_class'], $configuration['layout']['add_layout_class']),
+ ];
+
+ $form['layout']['attributes'] = [
+ '#type' => 'textfield',
+ '#title' => $this->t('Additional attributes'),
+ '#description' => 'E.g. id|custom-id,role|navigation,data-something|some value',
+ '#default_value' => $form_state->getValue(['layout', 'attributes'], $configuration['layout']['attributes']),
+ ];
+
+ if ($tokens) {
+ $form['layout']['tokens'] = $tokens;
+ }
+
+ // Add each region's settings.
+ foreach ($this->getRegionNames() as $region => $region_label) {
+ $default_values = NestedArray::mergeDeep(
+ $this->getRegionDefaults(),
+ isset($configuration['regions'][$region]) ? $configuration['regions'][$region] : [],
+ $form_state->getValue(['regions', $region], [])
+ );
+
+ $form[$region] = [
+ '#group' => 'additional_settings',
+ '#type' => 'details',
+ '#open' => TRUE,
+ '#title' => $this->t('Region: @region', ['@region' => $region_label]),
+ '#weight' => 20,
+ ];
+
+ $form[$region]['wrapper'] = [
+ '#type' => 'select',
+ '#title' => $this->t('Wrapper'),
+ '#options' => $wrapper_options,
+ '#default_value' => $default_values['wrapper'],
+ ];
+
+ $form[$region]['classes'] = [
+ '#type' => 'select',
+ '#title' => $this->t('Classes'),
+ '#options' => $classes,
+ '#default_value' => $default_values['classes'],
+ '#multiple' => TRUE,
+ ];
+
+ $form[$region]['add_region_classes'] = [
+ '#type' => 'checkbox',
+ '#title' => $this->t('Add region specific classes: <code>bs-region</code> and <code>bs-region--@region</code>', ['@region' => $region]),
+ '#default_value' => (int) $default_values['add_region_classes'],
+ ];
+
+ $form[$region]['attributes'] = [
+ '#type' => 'textfield',
+ '#title' => $this->t('Additional attributes'),
+ '#description' => 'E.g. id|custom-id,role|navigation,data-something|some value',
+ '#default_value' => $default_values['attributes'],
+ ];
+
+ if ($tokens) {
+ $form[$region]['tokens'] = $tokens;
+ }
+ }
+
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
+ $defaults = $this->getRegionDefaults();
+ if ($layout = $form_state->getValue('layout', $defaults)) {
+ // Apply Xss::filter to attributes.
+ $layout['attributes'] = Xss::filter($layout['attributes']);
+ $this->configuration['layout'] = $layout;
+ }
+
+
+ $regions = [];
+ foreach (array_keys($this->getRegionNames()) as $name) {
+ if ($region = $form_state->getValue($name, $defaults)) {
+ // Apply Xss::filter to attributes.
+ $region['attributes'] = Xss::filter($region['attributes']);
+ $regions[$name] = $region;
+ }
+ }
+ $this->configuration['regions'] = $regions;
+ }
+
+}