Initial commit.

config_views.info.yml

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+name: 'Configuration Entity View'
+description: 'Views handler implementation for configuration entities.'
+core: 8.x
+type: module
+version: VERSION
+package: Views

config_views.module

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+<?php
+/**
+ * @file
+ * Contains Config Views implementation.
+ */
+
+/**
+ * Helper to get the configuration for views.
+ */
+
+function config_views_query() {
+
+}

config_views.views.inc

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+<?php
+
+/**
+ * @file
+ * Provide views data for dblog.module.
+ */
+
+/**
+ * Implements hook_views_data().
+ */
+function config_views_views_data() {
+  $data = array();
+
+  $data['config_views']['table']['group'] = t('Configuration');
+  $data['config_views']['table']['wizard_id'] = 'config_entity';
+  $data['config_views']['table']['base'] = array(
+    'query_id' => 'config_entity_query',
+    'field' => 'id',
+    'title' => t('Configuration Entity'),
+    'help' => t('Contains list of configuration entities.'),
+  );
+
+  $data['config_views']['id'] = array(
+    'title' => t('Machine name'),
+    'help' => t('Unique configuration entity ID.'),
+    'field' => array(
+      'id' => 'config_entity',
+    ),
+    'filter' => array(
+      'id' => 'string',
+    ),
+    'argument' => array(
+      'id' => 'string',
+    ),
+    'sort' => array(
+      'id' => 'standard',
+    ),
+    'search' => array(
+      'id' => 'standard',
+    ),
+  );
+
+  $data['config_views']['name'] = array(
+    'title' => t('Name'),
+    'help' => t('Name'),
+    'field' => array(
+      'id' => 'config_entity',
+    ),
+    'filter' => array(
+      'id' => 'string',
+    ),
+    'argument' => array(
+      'id' => 'string',
+    ),
+    'sort' => array(
+      'id' => 'standard',
+    ),
+    'search' => array(
+      'id' => 'standard',
+    ),
+  );
+
+  $data['config_views']['description'] = array(
+    'title' => t('Description'),
+    'help' => t('Description'),
+    'field' => array(
+      'id' => 'config_entity',
+    ),
+    'filter' => array(
+      'id' => 'string',
+    ),
+    'argument' => array(
+      'id' => 'string',
+    ),
+    'sort' => array(
+      'id' => 'standard',
+    ),
+    'search' => array(
+      'id' => 'standard',
+    ),
+  );
+
+  $data['config_views']['operation'] = array(
+    'title' => t('Operations'),
+    'help' => t('Operations'),
+    'field' => array(
+      'id' => 'config_entity',
+    ),
+  );
+
+
+  return $data;
+
+}
+

src/Plugin/views/field/ConfigEntity.php

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+<?php
+
+/**
+ * @file
+ * Definition of Drupal\config_views\Plugin\views\field\Node.
+ */
+
+namespace Drupal\config_views\Plugin\views\field;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\ResultRow;
+use Drupal\views\ViewExecutable;
+use Drupal\views\Plugin\views\display\DisplayPluginBase;
+use Drupal\views\Plugin\views\field\FieldPluginBase;
+
+/**
+ * Field handler to provide simple renderer that allows linking to a entity.
+ * Definition terms:
+ * - link_to_entity default: Should this field have the checkbox "link to node" enabled by default.
+ *
+ * @ingroup views_field_handlers
+ *
+ * @ViewsField("config_entity")
+ */
+class ConfigEntity extends FieldPluginBase {
+
+  /**
+   * Overrides \Drupal\views\Plugin\views\field\FieldPluginBase::init().
+   */
+  public function init(ViewExecutable $view, DisplayPluginBase $display, array &$options = NULL) {
+    parent::init($view, $display, $options);
+
+    // Don't add the additional fields to groupby
+    if (!empty($this->options['link_to_entity'])) {
+      $this->additional_fields['nid'] = array('table' => 'node', 'field' => 'nid');
+    }
+  }
+
+  protected function defineOptions() {
+    $options = parent::defineOptions();
+    $options['link_to_entity'] = array('default' => isset($this->definition['link_to_entity default']) ? $this->definition['link_to_entity default'] : FALSE);
+    return $options;
+  }
+
+  /**
+   * Provide link to node option
+   */
+  public function link_to_entity(&$form, FormStateInterface $form_state) {
+    $form['link_to_entity'] = array(
+      '#title' => $this->t('Link this field to the original piece of content'),
+      '#description' => $this->t("Enable to override this field's links."),
+      '#type' => 'checkbox',
+      '#default_value' => !empty($this->options['link_to_entity']),
+    );
+
+    parent::buildOptionsForm($form, $form_state);
+  }
+
+  /**
+   * Prepares link to the entity.
+   *
+   * @param string $data
+   *   The XSS safe string for the link text.
+   * @param \Drupal\views\ResultRow $values
+   *   The values retrieved from a single row of a view's query result.
+   *
+   * @return string
+   *   Returns a string for the link text.
+   */
+  protected function renderLink($data, ResultRow $values) {
+    return $data;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function render(ResultRow $values) {
+    $this->field_alias = $this->field;
+    $value = $this->getValue($values);
+    return $this->renderLink($this->sanitizeValue($value), $values);
+  }
+
+}

src/Plugin/views/field/ConfigEntityId.php

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+<?php
+
+/**
+ * @file
+ * Definition of Drupal\config_views\Plugin\views\field\Node.
+ */
+
+namespace Drupal\config_views\Plugin\views\field;
+
+use Drupal\views\Plugin\views\field\FieldPluginBase;
+
+/**
+ *
+ * @ingroup views_field_handlers
+ *
+ * @ViewsField("config_entity_id")
+ */
+class ConfigEntityId extends FieldPluginBase {
+
+}

src/Plugin/views/query/ConfigEntityQuery.php

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+<?php
+
+/**
+ * @file
+ * Contains \Drupal\config_views\Plugin\views\query\ConfigEntityQuery.
+ */
+
+namespace Drupal\config_views\Plugin\views\query;
+
+use Drupal\Component\Utility\NestedArray;
+use Drupal\Core\Database\Database;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\Plugin\views\display\DisplayPluginBase;
+use Drupal\Core\Database\DatabaseExceptionWrapper;
+use Drupal\views\Plugin\views\join\JoinPluginBase;
+use Drupal\views\Plugin\views\HandlerBase;
+use Drupal\views\ResultRow;
+use Drupal\views\ViewExecutable;
+use Drupal\views\Views;
+use Drupal\views\Plugin\views\query\QueryPluginBase;
+
+/**
+ * Views query plugin for an SQL query.
+ *
+ * @ingroup views_query_plugins
+ *
+ * @ViewsQuery(
+ *   id = "config_entity_query",
+ *   title = @Translation("Configuration entity query"),
+ *   help = @Translation("Query will be generated and run using the Drupal database API.")
+ * )
+ */
+class ConfigEntityQuery extends QueryPluginBase {
+  /**
+   * {@inheritdoc}
+   */
+  function execute(ViewExecutable $view) {
+
+    $results = array(
+      array(
+        'id' => '1',
+        'name' => 'name1',
+        'description' => 'ddd1',
+        'operation' => 'ddd1',
+      ),
+      array(
+        'id' => '2',
+        'name' => 'name2',
+        'description' => 'ddd2',
+        'operation' => 'ddd2',
+      ),
+      array(
+        'id' => '3',
+        'name' => 'name',
+        'description' => 'ddd',
+        'operation' => 'ddd',
+      ),
+      array(
+        'id' => '4',
+        'name' => 'name',
+        'description' => 'ddd',
+        'operation' => 'ddd',
+      ),
+    );
+
+    foreach ($results as $result) {
+      $view->result[] = new ResultRow($result);
+    }
+  }
+
+
+  public function ensureTable($table, $relationship = NULL, JoinPluginBase $join = NULL) {
+    return;
+  }
+
+  public function addField($table, $field, $alias = '', $params = array()) {
+    return $alias;
+  }
+}