flag_hidden.module

<?php

/*
 * Implement hook_views_api()
 */
function flag_hidden_views_api() {
  return array('api' => 2.0);
}

/*
 * Implement hook_flag_default_flags()
 */
function flag_hidden_flag_default_flags() {
  $flags = array();
  // Exported flag: "Hidden Node".
  $flags['hidden_node'] = array(
    'content_type' => 'node',
    'title' => 'Hidden Node',
    'global' => '1',
    'types' => array(),
    'flag_short' => 'Hide [node:type-name]',
    'flag_long' => '',
    'flag_message' => '',
    'unflag_short' => 'Unhide [node:type-name]',
    'unflag_long' => '',
    'unflag_message' => '',
    'unflag_denied_text' => '',
    'link_type' => 'normal',
    'roles' => array(
      'flag' => array(),
      'unflag' => array(),
    ),
    'show_on_page' => 0,
    'show_on_teaser' => 0,
    'show_on_form' => 0,
    'access_author' => '',
    'i18n' => 0,
    'api_version' => 2,
  );

  // Exported flag: "Hidden Comment".
  $flags['hidden_comment'] = array(
    'content_type' => 'comment',
    'title' => 'Hidden Comment',
    'global' => '1',
    'types' => array(),
    'flag_short' => 'Hide Comment',
    'flag_long' => '',
    'flag_message' => '',
    'unflag_short' => 'Unhide Comment',
    'unflag_long' => '',
    'unflag_message' => '',
    'unflag_denied_text' => '',
    'link_type' => 'normal',
    'roles' => array(
      'flag' => array(),
      'unflag' => array(),
    ),
    'access_author' => '',
    'show_on_comment' => 1,
    'api_version' => 2,
  );

  return $flags;
}

/*
 * Hide hidden comments
 */

function flag_hidden_comment_view($comment, $view_mode, $langcode) {
  $flag = flag_get_flag('hidden_comment');
  if ($flag && $flag->is_flagged($comment->cid)) {
    flag_hidden_hide_comment_content($comment);
  }
}

function flag_hidden_hide_comment_content($comment) {

  $fieldset = array(
    '#type' => 'fieldset',
    '#title' => t("@title (hidden by the editors)", array('@title' => $comment->subject)),
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
    // Need to manually attach/set some stuff to make this work outside of a 
    // form
    '#attached' => array(
      'js' => array(
        'misc/form.js',
        'misc/collapse.js',
      ),
    ),
    '#attributes' => array(
      'class' => array('collapsible', 'collapsed'),
    ),
  );
  $fieldset['hidden_content'] = $comment->content;
  $comment->content = $fieldset;
  // For some reason moving the arrays around messes up the ordering of 
  // comment elemnts.  Manually set the weight for links to fix this.
  $fieldset['hidden_content']['links']['#weight'] = 1;
}

/*
 * Add robots META tags for hidden nodes and our hidden view.
 */

/*
 * Implement hook_page_alter
 */
function flag_hidden_page_alter() {
  if(flag_hidden_page_is_hidden_node() ||
     flag_hidden_page_is_hidden_view()) {
    flag_hidden_add_robots_meta_tag();
  }
}


function flag_hidden_add_robots_meta_tag() {
  $element = array(
    '#tag' => 'meta',
    '#attributes' => array(
      'name' => 'robots',
      'content' => 'noindex, nofollow',
    ),
  );
  drupal_add_html_head($element, 'robots-noindex');
}

function flag_hidden_node_is_hidden(&$node) {
  $flag = flag_get_flag('hidden_node');
  return ($flag && $flag->is_flagged($node->nid));
}

function flag_hidden_page_is_hidden_node() {
  static $cache = null;
  if(isset($cache)) return $cache;

  $current_node = menu_get_object('node');
  $cache = ($current_node && flag_hidden_node_is_hidden($current_node));
  return $cache;
}


function flag_hidden_page_is_hidden_view() {
  static $cache = null;

  if(isset($cache)) return $cache;

  $page_view = views_get_page_view();

  $cache = ($page_view && $page_view->name == 'hidden_nodes');
  return $cache;
}

/*
 * Add a hidden_node variable for themes
 */
function flag_hidden_preprocess_page(&$variables) {
  $variables['hidden_node'] = flag_hidden_page_is_hidden_node();
}