annotator.module

<?php
/**
 * @file
 * Annotator module.
 */

/**
 * Implements hook_init().
 */
function annotator_init() {
  if (user_access('administer annotations') || user_access('view annotations') || user_access('create annotations')) {
    $library = libraries_load('annotator');
    if ($library['loaded'] == FALSE) {
      drupal_set_message($library['error message'], 'error');
    }
    drupal_add_js(array('annotator' => array('element' => variable_get('annotator_element', '.node'))), 'setting');
    drupal_add_js(drupal_get_path('module', 'annotator') . '/js/annotator.js');
    annotator_execute_plugins();
  }
}

/**
 * Implements hook_menu().
 */
function annotator_menu() {
  $items = array();
  $items['admin/config/content/annotator'] = array(
    'title' => 'Annotator',
    'description' => 'Configure Annotator settings.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('annotator_admin'),
    'access arguments' => array('administer annotations'),
    'type' => MENU_NORMAL_ITEM,
    'file' => 'annotator.pages.inc',
  );
  return $items;
}

/**
 * Implements hook_library_info().
 */
function annotator_libraries_info() {
  $libraries['annotator'] = array(
    'name' => 'Annotator',
    'vendor url' => 'http://annotatorjs.org',
    'download url' => 'https://github.com/openannotation/annotator/releases/latest',
    'version arguments' => array(
      'file' => 'annotator-full.min.js',
      'pattern' => '@Annotator\sv(.*)@',
      'lines' => 10,
    ),
    'files' => array(
      'js' => array(
        'annotator-full.min.js',
      ),
      'css' => array(
        'annotator.min.css',
      ),
    ),
    'variants' => array(),
  );
  return $libraries;
}

/**
 * Implements hook_ctools_plugin_directory().
 */
function annotator_ctools_plugin_directory($module, $plugin) {
  if ($module == 'annotator') {
    return 'plugins/' . $plugin;
  }
}

/**
 * Implements hook_ctools_plugin_type().
 */
function annotator_ctools_plugin_type() {
  return array(
    'annotator' => array(
      'cache' => FALSE,
    ),
  );
}

/**
 * Execute ctools plugins.
 */
function annotator_execute_plugins($annotation = NULL, $op = NULL) {
  ctools_include('plugins');
  $annotator_plugins = variable_get('annotator_plugins', array());
  foreach ($annotator_plugins as $name => $enabled) {
    if ((boolean) $enabled) {
      $plugin = ctools_get_plugins('annotator', 'annotator', $name . 'AnnotatorPlugin');
      $class = ctools_plugin_get_class($plugin, 'handler');
      if (class_exists($class)) {
        $instance = new $class($plugin);
        $instance->setup();

        if ($annotation && $op) {
          $instance->alter($annotation, $op);
        }
      }
    }
  }
}

/**
 * Implements hook_TYPE_alter().
 */
function annotator_annotation_alter($entity, $op) {
  annotator_execute_plugins($entity, $op);
}