--- /dev/null
+<?php
+
+namespace Drupal\diff\Form;
+
+use Drupal\Component\Utility\Xss;
+use Drupal\Core\Entity\Query\QueryFactory;
+use Drupal\Core\Entity\ContentEntityInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\Core\Link;
+use Drupal\diff\DiffEntityComparison;
+use Drupal\diff\DiffLayoutManager;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Datetime\DateFormatter;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Drupal\Core\Render\RendererInterface;
+
+/**
+ * Provides a form for revision overview page.
+ */
+class RevisionOverviewForm extends FormBase {
+
+ /**
+ * The entity type manager.
+ *
+ * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+ */
+ protected $entityTypeManager;
+
+ /**
+ * The current user service.
+ *
+ * @var \Drupal\Core\Session\AccountInterface
+ */
+ protected $currentUser;
+
+ /**
+ * The date service.
+ *
+ * @var \Drupal\Core\Datetime\DateFormatter
+ */
+ protected $date;
+
+ /**
+ * The renderer service.
+ *
+ * @var \Drupal\Core\Render\RendererInterface
+ */
+ protected $renderer;
+
+ /**
+ * The language manager.
+ *
+ * @var \Drupal\Core\Language\LanguageManagerInterface
+ */
+ protected $languageManager;
+
+ /**
+ * Wrapper object for simple configuration from diff.settings.yml.
+ *
+ * @var \Drupal\Core\Config\ImmutableConfig
+ */
+ protected $config;
+
+ /**
+ * The field diff layout plugin manager service.
+ *
+ * @var \Drupal\diff\DiffLayoutManager
+ */
+ protected $diffLayoutManager;
+
+ /**
+ * The diff entity comparison service.
+ *
+ * @var \Drupal\diff\DiffEntityComparison
+ */
+ protected $entityComparison;
+
+ /**
+ * The entity query factory service.
+ *
+ * @var \Drupal\Core\Entity\Query\QueryFactory
+ */
+ protected $entityQuery;
+
+ /**
+ * Constructs a RevisionOverviewForm object.
+ *
+ * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+ * The entity type manager.
+ * @param \Drupal\Core\Session\AccountInterface $current_user
+ * The current user.
+ * @param \Drupal\Core\Datetime\DateFormatter $date
+ * The date service.
+ * @param \Drupal\Core\Render\RendererInterface $renderer
+ * The renderer service.
+ * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+ * The language manager.
+ * @param \Drupal\diff\DiffLayoutManager $diff_layout_manager
+ * The diff layout service.
+ * @param \Drupal\diff\DiffEntityComparison $entity_comparison
+ * The diff entity comparison service.
+ * @param \Drupal\Core\Entity\Query\QueryFactory $entity_query
+ * The entity query factory.
+ */
+ public function __construct(EntityTypeManagerInterface $entity_type_manager, AccountInterface $current_user, DateFormatter $date, RendererInterface $renderer, LanguageManagerInterface $language_manager, DiffLayoutManager $diff_layout_manager, DiffEntityComparison $entity_comparison, QueryFactory $entity_query) {
+ $this->entityTypeManager = $entity_type_manager;
+ $this->currentUser = $current_user;
+ $this->date = $date;
+ $this->renderer = $renderer;
+ $this->languageManager = $language_manager;
+ $this->config = $this->config('diff.settings');
+ $this->diffLayoutManager = $diff_layout_manager;
+ $this->entityComparison = $entity_comparison;
+ $this->entityQuery = $entity_query;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('entity_type.manager'),
+ $container->get('current_user'),
+ $container->get('date.formatter'),
+ $container->get('renderer'),
+ $container->get('language_manager'),
+ $container->get('plugin.manager.diff.layout'),
+ $container->get('diff.entity_comparison'),
+ $container->get('entity.query')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'revision_overview_form';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state, $node = NULL) {
+ $account = $this->currentUser;
+ /** @var \Drupal\node\NodeInterface $node */
+ $langcode = $node->language()->getId();
+ $langname = $node->language()->getName();
+ $languages = $node->getTranslationLanguages();
+ $has_translations = (count($languages) > 1);
+ $node_storage = $this->entityTypeManager->getStorage('node');
+ $type = $node->getType();
+
+ $pagerLimit = $this->config->get('general_settings.revision_pager_limit');
+
+ $query = $this->entityQuery->get('node')
+ ->condition($node->getEntityType()->getKey('id'), $node->id())
+ ->pager($pagerLimit)
+ ->allRevisions()
+ ->sort($node->getEntityType()->getKey('revision'), 'DESC')
+ ->execute();
+ $vids = array_keys($query);
+
+ $revision_count = count($vids);
+
+ $build['#title'] = $has_translations ? $this->t('@langname revisions for %title', [
+ '@langname' => $langname,
+ '%title' => $node->label(),
+ ]) : $this->t('Revisions for %title', [
+ '%title' => $node->label(),
+ ]);
+ $build['nid'] = array(
+ '#type' => 'hidden',
+ '#value' => $node->id(),
+ );
+
+ $table_header = [];
+ $table_header['revision'] = $this->t('Revision');
+
+ // Allow comparisons only if there are 2 or more revisions.
+ if ($revision_count > 1) {
+ $table_header += array(
+ 'select_column_one' => '',
+ 'select_column_two' => '',
+ );
+ }
+ $table_header['operations'] = $this->t('Operations');
+
+ $rev_revert_perm = $account->hasPermission("revert $type revisions") ||
+ $account->hasPermission('revert all revisions') ||
+ $account->hasPermission('administer nodes');
+ $rev_delete_perm = $account->hasPermission("delete $type revisions") ||
+ $account->hasPermission('delete all revisions') ||
+ $account->hasPermission('administer nodes');
+ $revert_permission = $rev_revert_perm && $node->access('update');
+ $delete_permission = $rev_delete_perm && $node->access('delete');
+
+ // Contains the table listing the revisions.
+ $build['node_revisions_table'] = array(
+ '#type' => 'table',
+ '#header' => $table_header,
+ '#attributes' => array('class' => array('diff-revisions')),
+ );
+
+ $build['node_revisions_table']['#attached']['library'][] = 'diff/diff.general';
+ $build['node_revisions_table']['#attached']['drupalSettings']['diffRevisionRadios'] = $this->config->get('general_settings.radio_behavior');
+
+ $default_revision = $node->getRevisionId();
+ // Add rows to the table.
+ foreach ($vids as $key => $vid) {
+ $previous_revision = NULL;
+ if (isset($vids[$key + 1])) {
+ $previous_revision = $node_storage->loadRevision($vids[$key + 1]);
+ }
+ /** @var \Drupal\Core\Entity\ContentEntityInterface $revision */
+ if ($revision = $node_storage->loadRevision($vid)) {
+ if ($revision->hasTranslation($langcode) && $revision->getTranslation($langcode)->isRevisionTranslationAffected()) {
+ $username = array(
+ '#theme' => 'username',
+ '#account' => $revision->getRevisionAuthor(),
+ );
+ $revision_date = $this->date->format($revision->getRevisionCreationTime(), 'short');
+ // Use revision link to link to revisions that are not active.
+ if ($vid != $node->getRevisionId()) {
+ $link = Link::fromTextAndUrl($revision_date, new Url('entity.node.revision', ['node' => $node->id(), 'node_revision' => $vid]));
+ }
+ else {
+ $link = $node->toLink($revision_date);
+ }
+
+ if ($vid == $default_revision) {
+ $row = [
+ 'revision' => $this->buildRevision($link, $username, $revision, $previous_revision),
+ ];
+
+ // Allow comparisons only if there are 2 or more revisions.
+ if ($revision_count > 1) {
+ $row += [
+ 'select_column_one' => $this->buildSelectColumn('radios_left', $vid, FALSE),
+ 'select_column_two' => $this->buildSelectColumn('radios_right', $vid, $vid),
+ ];
+ }
+ $row['operations'] = array(
+ '#prefix' => '<em>',
+ '#markup' => $this->t('Current revision'),
+ '#suffix' => '</em>',
+ '#attributes' => array(
+ 'class' => array('revision-current'),
+ ),
+ );
+ $row['#attributes'] = [
+ 'class' => ['revision-current'],
+ ];
+ }
+ else {
+ $route_params = array(
+ 'node' => $node->id(),
+ 'node_revision' => $vid,
+ 'langcode' => $langcode,
+ );
+ $links = array();
+ if ($revert_permission) {
+ $links['revert'] = [
+ 'title' => $vid < $node->getRevisionId() ? $this->t('Revert') : $this->t('Set as current revision'),
+ 'url' => $has_translations ?
+ Url::fromRoute('node.revision_revert_translation_confirm', ['node' => $node->id(), 'node_revision' => $vid, 'langcode' => $langcode]) :
+ Url::fromRoute('node.revision_revert_confirm', ['node' => $node->id(), 'node_revision' => $vid]),
+ ];
+ }
+ if ($delete_permission) {
+ $links['delete'] = array(
+ 'title' => $this->t('Delete'),
+ 'url' => Url::fromRoute('node.revision_delete_confirm', $route_params),
+ );
+ }
+
+ // Here we don't have to deal with 'only one revision' case because
+ // if there's only one revision it will also be the default one,
+ // entering on the first branch of this if else statement.
+ $row = [
+ 'revision' => $this->buildRevision($link, $username, $revision, $previous_revision),
+ 'select_column_one' => $this->buildSelectColumn('radios_left', $vid,
+ isset($vids[1]) ? $vids[1] : FALSE),
+ 'select_column_two' => $this->buildSelectColumn('radios_right', $vid, FALSE),
+ 'operations' => [
+ '#type' => 'operations',
+ '#links' => $links,
+ ],
+ ];
+ }
+ // Add the row to the table.
+ $build['node_revisions_table'][] = $row;
+ }
+ }
+ }
+
+ // Allow comparisons only if there are 2 or more revisions.
+ if ($revision_count > 1) {
+ $build['submit'] = array(
+ '#type' => 'submit',
+ '#button_type' => 'primary',
+ '#value' => t('Compare selected revisions'),
+ '#attributes' => array(
+ 'class' => array(
+ 'diff-button',
+ ),
+ ),
+ );
+ }
+ $build['pager'] = array(
+ '#type' => 'pager',
+ );
+ $build['#attached']['library'][] = 'node/drupal.node.admin';
+ return $build;
+ }
+
+ /**
+ * Set column attributes and return config array.
+ *
+ * @param string $name
+ * Name attribute.
+ * @param string $return_val
+ * Return value attribute.
+ * @param string $default_val
+ * Default value attribute.
+ *
+ * @return array
+ * Configuration array.
+ */
+ protected function buildSelectColumn($name, $return_val, $default_val) {
+ return [
+ '#type' => 'radio',
+ '#title_display' => 'invisible',
+ '#name' => $name,
+ '#return_value' => $return_val,
+ '#default_value' => $default_val,
+ ];
+ }
+
+ /**
+ * Set and return configuration for revision.
+ *
+ * @param \Drupal\Core\Link $link
+ * Link attribute.
+ * @param string $username
+ * Username attribute.
+ * @param \Drupal\Core\Entity\ContentEntityInterface $revision
+ * Revision parameter for getRevisionDescription function.
+ * @param \Drupal\Core\Entity\ContentEntityInterface $previous_revision
+ * (optional) Previous revision for getRevisionDescription function.
+ * Defaults to NULL.
+ *
+ * @return array
+ * Configuration for revision.
+ */
+ protected function buildRevision(Link $link, $username, ContentEntityInterface $revision, ContentEntityInterface $previous_revision = NULL) {
+ return [
+ '#type' => 'inline_template',
+ '#template' => '{% trans %}{{ date }} by {{ username }}{% endtrans %}{% if message %}<p class="revision-log">{{ message }}</p>{% endif %}',
+ '#context' => [
+ 'date' => $link->toString(),
+ 'username' => $this->renderer->renderPlain($username),
+ 'message' => [
+ '#markup' => $this->entityComparison->getRevisionDescription($revision, $previous_revision),
+ '#allowed_tags' => Xss::getAdminTagList(),
+ ],
+ ],
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function validateForm(array &$form, FormStateInterface $form_state) {
+ $input = $form_state->getUserInput();
+
+ if (count($form_state->getValue('node_revisions_table')) <= 1) {
+ $form_state->setErrorByName('node_revisions_table', $this->t('Multiple revisions are needed for comparison.'));
+ }
+ elseif (!isset($input['radios_left']) || !isset($input['radios_right'])) {
+ $form_state->setErrorByName('node_revisions_table', $this->t('Select two revisions to compare.'));
+ }
+ elseif ($input['radios_left'] == $input['radios_right']) {
+ // @todo Radio-boxes selection resets if there are errors.
+ $form_state->setErrorByName('node_revisions_table', $this->t('Select different revisions to compare.'));
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ $input = $form_state->getUserInput();
+ $vid_left = $input['radios_left'];
+ $vid_right = $input['radios_right'];
+ $nid = $input['nid'];
+
+ // Always place the older revision on the left side of the comparison
+ // and the newer revision on the right side (however revisions can be
+ // compared both ways if we manually change the order of the parameters).
+ if ($vid_left > $vid_right) {
+ $aux = $vid_left;
+ $vid_left = $vid_right;
+ $vid_right = $aux;
+ }
+ // Builds the redirect Url.
+ $redirect_url = Url::fromRoute(
+ 'diff.revisions_diff',
+ array(
+ 'node' => $nid,
+ 'left_revision' => $vid_left,
+ 'right_revision' => $vid_right,
+ 'filter' => $this->diffLayoutManager->getDefaultLayout(),
+ )
+ );
+ $form_state->setRedirectUrl($redirect_url);
+ }
+
+}
projects / yaffs-website / blobdiff