Club Drupal

<?php

/**

 * @file

 * The Flag Bookmark module install hooks.

 */

/**

 * Implements hook_enable().

 *

 * We create the demonstration flag on enable, so hook implementations in flag

 * module will fire correctly, as the APIs are not available on install.

 */

function flag_bookmark_enable() {

  // Load the flag API in case we want to use it when enabling.

  include_once drupal_get_path('module', 'flag') . '/flag.module';

  if (!flag_get_flags()) {

    // Install a demonstration flag only if no flag exists. This is to prevent

    // a case where a disables and enables the module, and the demonstration

    // flag is overwritten or re-created.

    $flag = flag_flag::factory_by_entity_type('node');

    $configuration = array(

      'name' => 'bookmarks',

      'global' => 0,

      'show_in_links' => array(

        'full' => 1,

        'teaser' => 1,

      ),

      'show_on_form' => 1,

      // The following UI labels aren't wrapped in t() because they are written

      // to the DB in English. They are passed to t() later, thus allowing for

      // multilingual sites.

      'title' => 'Bookmarks',

      'flag_short' => 'Bookmark this',

      'flag_long' => 'Add this post to your bookmarks',

      'flag_message' => 'This post has been added to your bookmarks',

      'unflag_short' => 'Unbookmark this',

      'unflag_long' => 'Remove this post from your bookmarks',

      'unflag_message' => 'This post has been removed from your bookmarks',

      'types' => _flag_bookmark_install_get_suggested_node_types(),

    );

    $flag->form_input($configuration);

    $flag->save();

    // Clear the flag cache so the new permission is seen by core.

    drupal_static_reset('flag_get_flags');

    // Grant permissions.

    $permissions = array('flag bookmarks', 'unflag bookmarks');

    user_role_grant_permissions(DRUPAL_AUTHENTICATED_RID, $permissions);

  }

}

/**

 * Returns some node types to which the demonstration 'bookmarks' flag will

 * apply.

 */

function _flag_bookmark_install_get_suggested_node_types() {

  $preferred = array('article', 'story', 'forum', 'blog');

  $existing = array_intersect($preferred, array_keys(node_type_get_types()));

  if (!$existing) {

    // As a last resort, take the first preference.

    return array($preferred[0]);

  }

  return $existing;

}