Initial commit for views support.

modules/simple_sitemap_views/js/simple_sitemap.views.js

+/**
+ * @file
+ * Views UI helpers for Simple XML Sitemap display extender.
+ */
+
+(function ($, Drupal) {
+  Drupal.simpleSitemapViews = {};
+
+  Drupal.behaviors.simpleSitemapViewsCheckboxify = {
+    attach: function attach(context, settings) {
+      var $button = $('[data-drupal-selector="edit-index-button"]').once('simple-sitemap-views-checkboxify');
+      if ($button.length) {
+        new Drupal.simpleSitemapViews.Checkboxifier($button[0]);
+      }
+    }
+  };
+
+  Drupal.behaviors.simpleSitemapViewsArguments = {
+    attach: function attach(context, settings) {
+      var $arguments = $('.indexed-arguments').once('simple-sitemap-views-arguments');
+      var $checkboxes = $arguments.find('input[type="checkbox"]');
+      if ($checkboxes.length) {
+        new Drupal.simpleSitemapViews.Arguments($checkboxes);
+      }
+    }
+  };
+
+  Drupal.simpleSitemapViews.Checkboxifier = function (button) {
+    this.$button = $(button);
+    this.$parent = this.$button.parent('div.simple-sitemap-views-index');
+    this.$input = this.$parent.find('input:checkbox');
+    this.$button.hide();
+    this.$input.on('click', $.proxy(this, 'clickHandler'));
+  };
+
+  Drupal.simpleSitemapViews.Checkboxifier.prototype.clickHandler = function (e) {
+    this.$button.trigger('click').trigger('submit');
+  };
+
+  Drupal.simpleSitemapViews.Arguments = function ($checkboxes) {
+    this.$checkboxes = $checkboxes;
+    this.$checkboxes.on('change', $.proxy(this, 'changeHandler'));
+  };
+
+  Drupal.simpleSitemapViews.Arguments.prototype.changeHandler = function (e) {
+    var $checkbox = $(e.target), index = this.$checkboxes.index($checkbox);
+    $checkbox.prop('checked') ? this.check(index) : this.uncheck(index);
+  };
+
+  Drupal.simpleSitemapViews.Arguments.prototype.check = function (index) {
+    this.$checkboxes.slice(0, index).prop('checked', true);
+  };
+
+  Drupal.simpleSitemapViews.Arguments.prototype.uncheck = function (index) {
+    this.$checkboxes.slice(index).prop('checked', false);
+  };
+
+})(jQuery, Drupal);
\ No newline at end of file

modules/simple_sitemap_views/simple_sitemap_views.info.yml

+name: 'Simple XML Sitemap (Views)'
+type: module
+description: 'Provides integration of the Simple XML Sitemap module with the Views module.'
+configure: simple_sitemap.settings_views
+package: SEO
+core: 8.x
+dependencies:
+  - simple_sitemap:simple_sitemap
+  - drupal:views

modules/simple_sitemap_views/simple_sitemap_views.install

+<?php
+
+/**
+ * @file
+ * Install and uninstall hooks for the simple_sitemap_views module.
+ */
+
+/**
+ * Implements hook_uninstall().
+ */
+function simple_sitemap_views_uninstall() {
+  // Disable views display extender plugin.
+  \Drupal::service('simple_sitemap.views')->disable();
+}
+
+/**
+ * Implements hook_schema().
+ */
+function simple_sitemap_views_schema() {
+  $schema['simple_sitemap_views'] = [
+    'description' => 'Index of argument values for view pages.',
+    'fields' => [
+      'id' => [
+        'type' => 'serial',
+        'not null' => TRUE,
+        'description' => 'Primary Key: Unique ID for argument values.',
+      ],
+      'view_id' => [
+        'type' => 'varchar_ascii',
+        'not null' => TRUE,
+        'default' => '',
+        'length' => 128,
+        'description' => 'The ID of the view.',
+      ],
+      'display_id' => [
+        'type' => 'varchar_ascii',
+        'not null' => TRUE,
+        'default' => '',
+        'length' => 128,
+        'description' => 'The ID of the view display.',
+      ],
+      'arguments_ids' => [
+        'type' => 'varchar',
+        'not null' => TRUE,
+        'default' => '',
+        'length' => 1024,
+        'description' => 'A string representation of the set of argument identifiers.',
+      ],
+      'arguments_values' => [
+        'type' => 'varchar',
+        'not null' => TRUE,
+        'default' => '',
+        'length' => 1024,
+        'description' => 'A string representation of the set of argument values.',
+      ],
+    ],
+    'primary key' => ['id'],
+    'indexes' => [
+      'view' => ['view_id'],
+      'display' => ['view_id', 'display_id'],
+      'arguments_ids' => ['view_id', 'display_id', 'arguments_ids'],
+    ],
+  ];
+  return $schema;
+}

modules/simple_sitemap_views/simple_sitemap_views.libraries.yml

+views:
+  version: VERSION
+  js:
+    js/simple_sitemap.views.js: {}
+  dependencies:
+    - core/jquery
+    - core/drupal
+    - core/jquery.once

modules/simple_sitemap_views/simple_sitemap_views.links.task.yml

+simple_sitemap.settings_views:
+  route_name: simple_sitemap.settings_views
+  title: 'Sitemap views'
+  base_route: simple_sitemap.settings
+  weight: 1

modules/simple_sitemap_views/simple_sitemap_views.module

+<?php
+
+/**
+ * @file
+ * Contains simple_sitemap_views.module.
+ */
+
+/**
+ * Implements hook_cron().
+ */
+function simple_sitemap_views_cron() {
+  // Create tasks in the garbage collection queue.
+  \Drupal::service('simple_sitemap.views')->executeGarbageCollection();
+}
+
+/**
+ * Implements hook_simple_sitemap_sitemap_types_alter().
+ */
+function simple_sitemap_views_simple_sitemap_sitemap_types_alter(array &$sitemap_types) {
+  // Add a 'views' UrlGenerator plugin to the default hreflang sitemap type.
+  if (isset($sitemap_types['default_hreflang'])) {
+    $sitemap_types['default_hreflang']['urlGenerators'][] = 'views';
+  }
+}

modules/simple_sitemap_views/simple_sitemap_views.routing.yml

+simple_sitemap.settings_views:
+  path: '/admin/config/search/simplesitemap/views'
+  defaults:
+    _form: '\Drupal\simple_sitemap_views\Form\SimpleSitemapViewsForm'
+    _title: 'Simple XML Sitemap Settings'
+  requirements:
+    _permission: 'administer sitemap settings'

modules/simple_sitemap_views/simple_sitemap_views.services.yml

+services:
+  simple_sitemap.views:
+    class: Drupal\simple_sitemap_views\SimpleSitemapViews
+    arguments: ['@entity_type.manager', '@config.factory', '@queue', '@database']
+  simple_sitemap.views.argument_collector:
+    class: Drupal\simple_sitemap_views\EventSubscriber\ArgumentCollector
+    arguments: ['@entity_type.manager', '@simple_sitemap.views', '@current_route_match']
+    tags:
+      - {name: 'event_subscriber'}

modules/simple_sitemap_views/src/EventSubscriber/ArgumentCollector.php

+<?php
+
+/**
+ * @file
+ * Contains views arguments collector.
+ */
+
+namespace Drupal\simple_sitemap_views\EventSubscriber;
+
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpKernel\Event\PostResponseEvent;
+use Drupal\simple_sitemap_views\SimpleSitemapViews;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Symfony\Component\HttpKernel\KernelEvents;
+use Drupal\Core\Routing\RouteMatchInterface;
+
+/**
+ * Collect information about views arguments.
+ */
+class ArgumentCollector implements EventSubscriberInterface {
+
+  /**
+   * View entities storage.
+   *
+   * @var \Drupal\Core\Config\Entity\ConfigEntityStorageInterface
+   */
+  protected $viewStorage;
+
+  /**
+   * Views sitemap data.
+   *
+   * @var \Drupal\simple_sitemap_views\SimpleSitemapViews
+   */
+  protected $sitemapViews;
+
+  /**
+   * The currently active route match object.
+   *
+   * @var \Drupal\Core\Routing\RouteMatchInterface
+   */
+  protected $routeMatch;
+
+  /**
+   * ArgumentCollector constructor.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   Entity type manager.
+   * @param \Drupal\simple_sitemap_views\SimpleSitemapViews $sitemap_views
+   *   Views sitemap data.
+   * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
+   *   The currently active route match object.
+   */
+  public function __construct(EntityTypeManagerInterface $entity_type_manager, SimpleSitemapViews $sitemap_views, RouteMatchInterface $route_match) {
+    $this->viewStorage = $entity_type_manager->getStorage('view');
+    $this->sitemapViews = $sitemap_views;
+    $this->routeMatch = $route_match;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    $events[KernelEvents::TERMINATE] = 'onTerminate';
+    return $events;
+  }
+
+  /**
+   * Collect information about views arguments.
+   *
+   * @param \Symfony\Component\HttpKernel\Event\PostResponseEvent $event
+   *   Object of event after a response was sent.
+   */
+  public function onTerminate(PostResponseEvent $event) {
+    // Only successful requests are interesting.
+    // Collect information about arguments only if views support is enabled.
+    if (!$event->getResponse()->isSuccessful() || !$this->sitemapViews->isEnabled()) {
+      return;
+    }
+
+    // Get view ID from route.
+    $view_id = $this->routeMatch->getParameter('view_id');
+    /** @var \Drupal\views\ViewEntityInterface $view_entity */
+    if ($view_id && $view_entity = $this->viewStorage->load($view_id)) {
+      // Get display ID from route.
+      $display_id = $this->routeMatch->getParameter('display_id');
+      // Get a set of view arguments and try to add them to the index.
+      $view = $view_entity->getExecutable();
+      $args = $this->getViewArgumentsFromRoute();
+      $this->sitemapViews->addArgumentsToIndex($view, $args, $display_id);
+      // Destroy a view instance.
+      $view->destroy();
+    }
+  }
+
+  /**
+   * Get view arguments from current route.
+   *
+   * @return array
+   *   View arguments array.
+   */
+  protected function getViewArgumentsFromRoute() {
+    // The code of this function is taken in part from the view page controller
+    // method (Drupal\views\Routing\ViewPageController::handle()).
+    $route = $this->routeMatch->getRouteObject();
+    $map = $route->hasOption('_view_argument_map') ? $route->getOption('_view_argument_map') : [];
+
+    $args = [];
+    foreach ($map as $attribute => $parameter_name) {
+      $parameter_name = isset($parameter_name) ? $parameter_name : $attribute;
+      if (($arg = $this->routeMatch->getRawParameter($parameter_name)) !== NULL) {
+        $args[] = $arg;
+      }
+    }
+    return $args;
+  }
+
+}

modules/simple_sitemap_views/src/Form/SimpleSitemapViewsForm.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\simple_sitemap_views\Form\SimpleSitemapViewsForm.
+ */
+
+namespace Drupal\simple_sitemap_views\Form;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\simple_sitemap\Form\SimplesitemapFormBase;
+use Drupal\simple_sitemap_views\SimpleSitemapViews;
+use Drupal\simple_sitemap\Form\FormHelper;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\simple_sitemap\Simplesitemap;
+
+/**
+ * Simple XML Sitemap Views settings form.
+ */
+class SimpleSitemapViewsForm extends SimplesitemapFormBase {
+
+  /**
+   * Views sitemap data.
+   *
+   * @var \Drupal\simple_sitemap_views\SimpleSitemapViews
+   */
+  protected $sitemapViews;
+
+  /**
+   * SimpleSitemapViewsForm constructor.
+   *
+   * @param \Drupal\simple_sitemap\Simplesitemap $generator
+   *   The simple_sitemap.generator service.
+   * @param \Drupal\simple_sitemap\Form\FormHelper $form_helper
+   *   Simple XML Sitemap form helper.
+   * @param \Drupal\simple_sitemap_views\SimpleSitemapViews $sitemap_views
+   *   Views sitemap data.
+   */
+  public function __construct(Simplesitemap $generator, FormHelper $form_helper, SimpleSitemapViews $sitemap_views) {
+    parent::__construct($generator, $form_helper);
+    $this->sitemapViews = $sitemap_views;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('simple_sitemap.generator'),
+      $container->get('simple_sitemap.form_helper'),
+      $container->get('simple_sitemap.views')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'simple_sitemap_views_form';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $form['simple_sitemap_views']['#prefix'] = $this->getDonationText();
+
+    $form['simple_sitemap_views']['views'] = [
+      '#title' => $this->t('Sitemap views'),
+      '#type' => 'fieldset',
+      '#markup' => '<div class="description">' . $this->t('Manage views support.') . '</div>',
+    ];
+    $form['simple_sitemap_views']['views']['enabled'] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Enable views support'),
+      '#description' => $this->t('Sitemap settings for views can be set on the display editing pages.'),
+      '#default_value' => $this->sitemapViews->isEnabled(),
+      '#suffix' => $this->getViewsInfo(),
+    ];
+    $this->formHelper->displayRegenerateNow($form['simple_sitemap_views']['views']);
+
+    return parent::buildForm($form, $form_state);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $form_state->getValue('enabled') ? $this->sitemapViews->enable() : $this->sitemapViews->disable();
+    parent::submitForm($form, $form_state);
+
+    // Regenerate sitemaps according to user setting.
+    if ($form_state->getValue('simple_sitemap_regenerate_now')) {
+      $this->generator->generateSitemap();
+    }
+  }
+
+  /**
+   * Returns information about indexed views.
+   *
+   * @return string
+   *   An HTML string representing the output.
+   */
+  protected function getViewsInfo() {
+    $indexed_views = [];
+    // Collect information about indexed views.
+    foreach ($this->sitemapViews->getIndexableViews() as $view) {
+      if (!isset($indexed_views[$view->id()]['label'])) {
+        $indexed_views[$view->id()]['label'] = $view->storage->label();
+      }
+      $indexed_views[$view->id()]['displays'][] = $view->current_display;
+      // Destroy a view instance.
+      $view->destroy();
+    }
+
+    // Form the output.
+    if (empty($indexed_views)) {
+      $views_info = $this->t('No displays are set to be indexed yet.');
+    }
+    else {
+      $views_info = '';
+      foreach ($indexed_views as $view_id => $view_info) {
+        $views_info .= '<div id="indexed-view-displays-' . $view_id . '">';
+        $views_info .= $this->t("<em>@view_label</em> displays set to be indexed: <em>@display_titles</em>", [
+          '@view_label' => ucfirst(strtolower($view_info['label'])),
+          '@display_titles' => implode(', ', $view_info['displays']),
+        ]);
+        $views_info .= '</div>';
+      }
+    }
+    return $views_info;
+  }
+
+}

modules/simple_sitemap_views/src/Plugin/QueueWorker/GarbageCollector.php

+<?php
+
+/**
+ * @file
+ * Contains queue worker for garbage collection.
+ */
+
+namespace Drupal\simple_sitemap_views\Plugin\QueueWorker;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\simple_sitemap_views\SimpleSitemapViews;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Database\Query\Condition;
+use Drupal\Core\Queue\QueueWorkerBase;
+
+/**
+ * Executes garbage collection in the simple_sitemap_views table.
+ *
+ * @QueueWorker(
+ *   id = "simple_sitemap.views.garbage_collector",
+ *   title = @Translation("Garbage collection in the simple_sitemap_views table"),
+ *   cron = {"time" = 30}
+ * )
+ */
+class GarbageCollector extends QueueWorkerBase implements ContainerFactoryPluginInterface {
+
+  /**
+   * View entities storage.
+   *
+   * @var \Drupal\Core\Config\Entity\ConfigEntityStorageInterface
+   */
+  protected $viewStorage;
+
+  /**
+   * Views sitemap data.
+   *
+   * @var \Drupal\simple_sitemap_views\SimpleSitemapViews
+   */
+  protected $sitemapViews;
+
+  /**
+   * GarbageCollector constructor.
+   *
+   * @param array $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   Entity type manager.
+   * @param \Drupal\simple_sitemap_views\SimpleSitemapViews $sitemap_views
+   *   Views sitemap data.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityTypeManagerInterface $entity_type_manager, SimpleSitemapViews $sitemap_views) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+    $this->viewStorage = $entity_type_manager->getStorage('view');
+    $this->sitemapViews = $sitemap_views;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('entity_type.manager'),
+      $container->get('simple_sitemap.views')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function processItem($data) {
+    $view_id = $data['view_id'];
+    /** @var \Drupal\views\ViewEntityInterface $view_entity */
+    $view_entity = $this->viewStorage->load($view_id);
+    $display_ids = [];
+
+    // Check that the view exists and it is enabled.
+    if ($view_entity && $view_entity->status()) {
+      $view = $view_entity->getExecutable();
+      foreach ($this->sitemapViews->getRouterDisplayIds($view_entity) as $display_id) {
+        // Ensure the display was correctly set.
+        // Check that the display is enabled.
+        if (!$view->setDisplay($display_id) || !$view->display_handler->isEnabled()) {
+          continue;
+        }
+        // Check that the display has indexable arguments.
+        $args_ids = $this->sitemapViews->getIndexableArguments($view);
+        if (empty($args_ids)) {
+          continue;
+        }
+
+        $display_ids[] = $display_id;
+        // Delete records about sets of arguments that are no longer indexed.
+        $args_ids = $this->sitemapViews->getArgumentsStringVariations($args_ids);
+        $condition = new Condition('AND');
+        $condition->condition('view_id', $view_id);
+        $condition->condition('display_id', $display_id);
+        $condition->condition('arguments_ids', $args_ids, 'NOT IN');
+        $this->sitemapViews->removeArgumentsFromIndex($condition);
+
+        // Check if the records limit for display is exceeded.
+        $settings = $this->sitemapViews->getSitemapSettings($view);
+        $max_links = is_numeric($settings['max_links']) ? $settings['max_links'] : 0;
+        if ($max_links > 0) {
+          $condition = new Condition('AND');
+          $condition->condition('view_id', $view_id);
+          $condition->condition('display_id', $display_id);
+          // Delete records that exceed the limit.
+          if ($index_id = $this->sitemapViews->getIndexIdByPosition($max_links, $condition)) {
+            $condition->condition('id', $index_id, '>');
+            $this->sitemapViews->removeArgumentsFromIndex($condition);
+          }
+        }
+      }
+      // Delete records about view displays that do not exist or are disabled.
+      if (!empty($display_ids)) {
+        $condition = new Condition('AND');
+        $condition->condition('view_id', $view_id);
+        $condition->condition('display_id', $display_ids, 'NOT IN');
+        $this->sitemapViews->removeArgumentsFromIndex($condition);
+      }
+      // Destroy a view instance.
+      $view->destroy();
+    }
+
+    // Delete records about the view, if it does not exist, is disabled or it
+    // does not have a display whose arguments are indexed.
+    if (empty($display_ids)) {
+      $condition = new Condition('AND');
+      $condition->condition('view_id', $view_id);
+      $this->sitemapViews->removeArgumentsFromIndex($condition);
+    }
+  }
+
+}

modules/simple_sitemap_views/src/Plugin/simple_sitemap/UrlGenerator/ViewsUrlGenerator.php

+<?php
+
+/**
+ * @file
+ * Contains Views URL generator.
+ */
+
+namespace Drupal\simple_sitemap_views\Plugin\simple_sitemap\UrlGenerator;
+
+use Drupal\simple_sitemap\Plugin\simple_sitemap\UrlGenerator\UrlGeneratorBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\simple_sitemap_views\SimpleSitemapViews;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\Core\Routing\RouteProviderInterface;