--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/example_addressbook/example_addressbook.php	Thu Jan 04 15:50:29 2018 -0500
@@ -0,0 +1,53 @@
+<?php
+
+require_once(__DIR__ . '/example_addressbook_backend.php');
+
+/**
+ * Sample plugin to add a new address book
+ * with just a static list of contacts
+ *
+ * @license GNU GPLv3+
+ * @author Thomas Bruederli
+ */
+class example_addressbook extends rcube_plugin
+{
+  private $abook_id = 'static';
+  private $abook_name = 'Static List';
+
+  public function init()
+  {
+    $this->add_hook('addressbooks_list', array($this, 'address_sources'));
+    $this->add_hook('addressbook_get', array($this, 'get_address_book'));
+
+    // use this address book for autocompletion queries
+    // (maybe this should be configurable by the user?)
+    $config = rcmail::get_instance()->config;
+    $sources = (array) $config->get('autocomplete_addressbooks', array('sql'));
+    if (!in_array($this->abook_id, $sources)) {
+      $sources[] = $this->abook_id;
+      $config->set('autocomplete_addressbooks', $sources);
+    }
+  }
+
+  public function address_sources($p)
+  {
+    $abook = new example_addressbook_backend($this->abook_name);
+    $p['sources'][$this->abook_id] = array(
+      'id' => $this->abook_id,
+      'name' => $this->abook_name,
+      'readonly' => $abook->readonly,
+      'groups' => $abook->groups,
+    );
+    return $p;
+  }
+
+  public function get_address_book($p)
+  {
+    if ($p['id'] === $this->abook_id) {
+      $p['instance'] = new example_addressbook_backend($this->abook_name);
+    }
+
+    return $p;
+  }
+
+}