Version 1

[yaffs-website] / web / core / modules / history / src / Plugin / views / filter / HistoryUserTimestamp.php

diff --git a/web/core/modules/history/src/Plugin/views/filter/HistoryUserTimestamp.php b/web/core/modules/history/src/Plugin/views/filter/HistoryUserTimestamp.php
new file mode 100644 (file)
index 0000000..92a5799
--- /dev/null
+++ b/web/core/modules/history/src/Plugin/views/filter/HistoryUserTimestamp.php
@@ -0,0 +1,99 @@
+<?php
+
+namespace Drupal\history\Plugin\views\filter;
+
+use Drupal\Core\Cache\UncacheableDependencyTrait;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\Plugin\views\filter\FilterPluginBase;
+
+/**
+ * Filter for new content.
+ *
+ * The handler is named history_user, because of compatibility reasons, the
+ * table is history.
+ *
+ * @ingroup views_filter_handlers
+ *
+ * @ViewsFilter("history_user_timestamp")
+ */
+class HistoryUserTimestamp extends FilterPluginBase {
+
+  use UncacheableDependencyTrait;
+
+  // Don't display empty space where the operator would be.
+  public $no_operator = TRUE;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function usesGroupBy() {
+    return FALSE;
+  }
+
+  public function buildExposeForm(&$form, FormStateInterface $form_state) {
+    parent::buildExposeForm($form, $form_state);
+    // @todo There are better ways of excluding required and multiple (object flags)
+    unset($form['expose']['required']);
+    unset($form['expose']['multiple']);
+    unset($form['expose']['remember']);
+  }
+
+  protected function valueForm(&$form, FormStateInterface $form_state) {
+    // Only present a checkbox for the exposed filter itself. There's no way
+    // to tell the difference between not checked and the default value, so
+    // specifying the default value via the views UI is meaningless.
+    if ($form_state->get('exposed')) {
+      if (isset($this->options['expose']['label'])) {
+        $label = $this->options['expose']['label'];
+      }
+      else {
+        $label = $this->t('Has new content');
+      }
+      $form['value'] = [
+        '#type' => 'checkbox',
+        '#title' => $label,
+        '#default_value' => $this->value,
+      ];
+    }
+  }
+
+  public function query() {
+    // This can only work if we're authenticated in.
+    if (!\Drupal::currentUser()->isAuthenticated()) {
+      return;
+    }
+
+    // Don't filter if we're exposed and the checkbox isn't selected.
+    if ((!empty($this->options['exposed'])) && empty($this->value)) {
+      return;
+    }
+
+    // Hey, Drupal kills old history, so nodes that haven't been updated
+    // since HISTORY_READ_LIMIT are bzzzzzzzt outta here!
+
+    $limit = REQUEST_TIME - HISTORY_READ_LIMIT;
+
+    $this->ensureMyTable();
+    $field = "$this->tableAlias.$this->realField";
+    $node = $this->query->ensureTable('node_field_data', $this->relationship);
+
+    $clause = '';
+    $clause2 = '';
+    if ($ces = $this->query->ensureTable('comment_entity_statistics', $this->relationship)) {
+      $clause = ("OR $ces.last_comment_timestamp > (***CURRENT_TIME*** - $limit)");
+      $clause2 = "OR $field < $ces.last_comment_timestamp";
+    }
+
+    // NULL means a history record doesn't exist. That's clearly new content.
+    // Unless it's very very old content. Everything in the query is already
+    // type safe cause none of it is coming from outside here.
+    $this->query->addWhereExpression($this->options['group'], "($field IS NULL AND ($node.changed > (***CURRENT_TIME*** - $limit) $clause)) OR $field < $node.changed $clause2");
+  }
+
+  public function adminSummary() {
+    if (!empty($this->options['exposed'])) {
+      return $this->t('exposed');
+    }
+  }
+
+}