<?php
// $Id: fivestar.module,v 1.42 2011-02-01 17:15:07 ericduran Exp $

/**
 * @file
 * A simple n-star voting widget, usable in other forms.
 */

include_once dirname(__FILE__) . '/includes/fivestar.field.inc';

/**
 * Implementation of hook_help().
 */
function fivestar_help($path, $arg) {
  $output = '';
  switch ($path) {
    case 'admin/config/content/fivestar':
      $output = t('This page is used to configure site-wide features of the Fivestar module. To setup Fivestar to rate content:');
      $steps = array(
        t('Configure site-wide settings for Fivestar below.'),
        t('Go to <a href="!types">admin/structure/types</a> and edit the type you would like to rate.', array('!types' => url('admin/structure/types'))),
        t('On the settings page for the content type, a set of options is available for fivestar, where you can enable rating for that type and set rating options.'),
      );
      $output .= theme('item_list', array('items' => $steps, 'type' => 'ol'));
      break;
    case 'admin/content/node-type/'. $arg[3] .'/fivestar':
      $arg[5] = 'vote';
    case 'admin/content/node-type/'. $arg[3] .'/fivestar/'. $arg[5]:
      $output = t('Use the settings on this page to set up Fivestar rating for the %type content type. These settings specifically affect the %axis rating axis. If needing to set up different criteria for voting, see the main <a href="@url">Fivestar settings page</a>.', array('%type' => node_get_types('name', $arg[3]), '%axis' => $arg[5], '@url' => url('admin/config/content/fivestar')));
      break;
  }
  return $output;
}

/**
 * Implementation of hook_menu().
 */
function fivestar_menu() {
  $items = array();
  $items['admin/config/content/fivestar'] = array(
    'title'             => 'Fivestar',
    'description'       => 'Configure site-wide widgets used for Fivestar rating.',
    'page callback'     => 'drupal_get_form',
    'page arguments'    => array('fivestar_settings'),
    'access callback'   => 'user_access',
    'access arguments'  => array('administer site configuration'),
    'type'              => MENU_NORMAL_ITEM,
    'file'              => 'includes/fivestar.admin.inc',
  );
  $items['fivestar/preview/node'] = array(
    'page callback'     => 'fivestar_preview',
    'access callback'   => 'user_access',
    'access arguments'  => array('administer content types'),
    'type'              => MENU_CALLBACK,
    'file'              => 'includes/fivestar.admin.inc',
  );
  $items['fivestar/preview/color'] = array(
    'page callback'     => 'fivestar_preview_color',
    'access callback'   => 'user_access',
    'access arguments'  => array('administer site configuration'),
    'type'              => MENU_CALLBACK,
    'file'              => 'includes/fivestar.color.inc',
  );
  $items['fivestar/vote'] = array(
    'page callback'     => 'fivestar_vote',
    'access callback'   => 'user_access',
    'access arguments'  => array('rate content'),
    'type'              => MENU_CALLBACK,
  );

  // Add a "fivestar" tab to each content type.
  // We can't yet add it to the "operations" column in content types, due to a TODO in CCK
  // (content.admin.inc line 32)

  $items['admin/structure/types/manage/%node_type/fivestar'] = array(
    'title' => 'Fivestar voting',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('fivestar_node_type_tag_form', 4),
    'access arguments' => array('administer content types'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 5,
    'file' => 'includes/fivestar.admin.inc',
  );
  foreach (fivestar_get_tags() as $tag) {
    $items['admin/structure/types/manage/%node_type/fivestar/' . urlencode($tag)] = array(
      'title' => $tag,
      'page callback' => 'drupal_get_form',
      'page arguments' => array('fivestar_node_type_tag_form', 4, $tag),
      'access arguments' => array('administer content types'),
      'type' => $tag == 'vote' ? MENU_DEFAULT_LOCAL_TASK : MENU_LOCAL_TASK,
      'weight' => $tag == 'vote' ? 0 : 1,
      'file' => 'includes/fivestar.admin.inc',
    );
  }

  return $items;
}

/**
 * Implementation of hook_init().
 *
 * These includes do not need to be loaded for cached pages.
 */
function fivestar_init() {
  module_load_include('inc', 'fivestar', 'includes/fivestar.field');

  // Add necessary CSS and JS.
  // TODO: These shouldn't be loaded on every page, but block caching omits
  // CSS and JS files that would be otherwise added.
  fivestar_add_js();
  fivestar_add_css();
}

/**
 * Implementation of hook_permission().
 *
 * Exposes permissions for rating content, viewing aggregate ratings, and using PHP
 * snippets when configuring fivestar CCK fields.
 */
function fivestar_permission() {
  return array(
    'rate content' => array(
      'title' => t('rate content'),
      'description' => 'TODO: write description for rate content',
    ),
    'use PHP for fivestar target' => array(
      'title' => t('use PHP for fivestar target'),
      'description' => 'TODO: write description for use PHP for fivestar target',
    ),
  );
}

/**
 * Implementation of hook_theme().
 */
function fivestar_theme() {
  return array(
    // Fivestar theme functions.
    'fivestar' => array(
      'render element' => 'element',
    ),
    'fivestar_select' => array(
      'render element' => 'element',
    ),
    'fivestar_static' => array(
      'variables' => array('rating' => NULL, 'stars' => 5, 'tag' => 'vote'),
    ),
    'fivestar_static_element' => array(
      'variables' => array('star_display' => NULL, 'title' => NULL, 'description' => NULL),
    ),
    'fivestar_summary' => array(
      'variables' => array('user_rating' => NULL, 'average_rating' => NULL, 'votes' => 0, 'stars' => 5, 'feedback_enable' => TRUE),
    ),
    'fivestar_widget' => array(
      'render element' => 'form',
    ),
    // fivestar.admin.inc.
    'fivestar_preview' => array(
      'variables' => array('style' => NULL, 'text' => NULL, 'stars' => NULL, 'unvote' => NULL, 'title' => NULL, 'feedback_enable' => TRUE, 'labels_enable' => TRUE, 'labels' => array()),
      'file' => 'includes/fivestar.admin.inc',
    ),
    'fivestar_preview_widget' => array(
      'variables' => array('css_file' => NULL),
      'file' => 'includes/fivestar.admin.inc',
    ),
    'fivestar_preview_wrapper' => array(
      'variables' => array('content' => NULL, 'type' => 'direct'),
      'file' => 'includes/fivestar.admin.inc',
    ),
    'fivestar_settings' => array(
      'render element' => 'form',
      'file' => 'includes/fivestar.admin.inc',
    ),
    'fivestar_node_type_tag_form' => array(
      'render element' => 'form',
      'file' => 'includes/fivestar.admin.inc',
    ),
    // fivestar.color.inc.
    'fivestar_color_form' => array(
      'render element' => 'form',
    ),
    // fivestar.field.inc.
    'fivestar_formatter_default' => array(
      'render element' => 'element',
    ),
    'fivestar_formatter_rating' => array(
      'render element' => 'element',
    ),
    'fivestar_formatter_percentage' => array(
      'render element' => 'element',
    ),
  );
}

/**
 * Implementation of hook_node_type_delete().
 */
function fivestar_node_type_delete($info) {
  $type = $info->type;

  // Be responsible and cleanup unneeded variables.
  foreach (_fivestar_variables() as $variable) {
    foreach (fivestar_get_tags() as $tag) {
      $suffix = fivestar_get_suffix($type, $tag);
      variable_del($variable . '_' . $suffix);
    }
  }
}

/**
 * Implementation of hook_node_type_update().
 */
function fivestar_node_type_update($info) {
  // When changing the type name, update the variables.
  if (!empty($info->old_type) && $info->old_type != $info->type) {
    foreach (_fivestar_variables() as $variable) {
      foreach (fivestar_get_tags() as $tag) {
        $oldvarname = $variable . '_' . fivestar_get_suffix($info->old_type, $tag);
        $newvarname = $variable . '_' . fivestar_get_suffix($info->type, $tag);
        $value = variable_get($oldvarname, -1);
        if ($value != -1) {
          variable_del($oldvarname);
          variable_set($newvarname, $value);
        }
      }
    }
  }
}

function _fivestar_variables() {
  return array('fivestar', 'fivestar_unvote', 'fivestar_style', 'fivestar_stars', 'fivestar_comment', 'fivestar_position', 'fivestar_position_teaser', 'fivestar_labels_enable', 'fivestar_labels', 'fivestar_text', 'fivestar_title', 'fivestar_feedback');
}

/**
 * Callback function for fivestar/vote.
 *
 * @param type
 *   A content-type to log the vote to. 'node' is the most common.
 * @param cid
 *   A content id to log the vote to. This would be a node ID, a comment ID, etc.
 * @param tag
 *   Multi-axis tag to allow multiple votes per node. 'vote' is the most common.
 * @param value
 *   A value from 1-100, representing the vote cast for the content.
 * @return
 *  An XML chunk containing the results of the vote, for use by the client-side
 *  javascript code.
 */
function fivestar_vote($type, $cid, $tag, $value) {
  drupal_add_http_header("Content-Type", "text/xml");
  $output = '';
  $output .= '<?xml version="1.0" encoding="UTF-8"?>';

  // Rebuild the #auto_submit_path that was used as the token seed.
  $path = preg_replace('/\/'. $value .'$/', '', $_GET['q']);
  if (!isset($_GET['token']) || !fivestar_check_token($_GET['token'], $path)) {
    $output .= '<xml><error>'. t('Invalid token') .'</error></xml>';
    echo $output;
    drupal_exit();
  }

  $result = _fivestar_cast_vote($type, $cid, $value, $tag, NULL, TRUE);
  votingapi_recalculate_results($type, $cid);

  if ($type == 'node') {
    $node = node_load($cid);
  }

  $suffix = fivestar_get_suffix((!isset($node) ? 'default' : $node->type), $tag);

  $stars = variable_get('fivestar_stars_' . $suffix, 5);
  $feedback_enable = variable_get('fivestar_feedback_' . $suffix, 1);

  $output .= '<xml><result>';

  if (count($result)) {
    foreach ($result as $data) {
      if (isset($data['tag']) && $data['tag'] == $tag) {
        $output .= '<'. $data['function'] .'>'. $data['value'] .'</'. $data['function'] .'>';
        $summary[$data['tag']][$data['function']] = $data['value'];
      }
    }
  }
  $arguments = array(
    'user_rating' => $value,
    'average_rating' => $summary[$tag]['average'],
    'votes' => $summary[$tag]['count'],
    'stars' => $stars,
    'feedback_enable' => $feedback_enable,
  );
  $skip_map = array(
    'average' => array('user_rating', 'votes'),
    'average_count' => array('user_rating'),
    'user' => array('average_rating', 'votes'),
    'user_count' => array('average_rating'),
    'combo' => array(),
    'count' => array('user_rating', 'average_rating'),
  );
  $output .= '<summary>';
  foreach ($skip_map as $tag => $skip) {
    $output .= "<$tag>![CDATA[". theme('fivestar_summary', array_diff_key($arguments, array_flip($skip))) . "]]></$tag>";
  }
  $output .= '</summary>';
  $output .= '</result>';

  $output .= '<vote>';
  $output .= '<value>'. $value .'</value>';
  $output .= '<type>'. $type .'</type>';
  $output .= '<id>'. $cid .'</id>';
  $output .= '<tag>'. $tag .'</tag>';
  $output .= '</vote></xml>';

  drupal_add_http_header("Content-Type", "text/xml");
  echo $output;
  drupal_exit();
}

/**
 * Internal function to handle vote casting, flood control, XSS, IP based
 * voting, etc...
 */
function _fivestar_cast_vote($type, $cid, $value, $tag = NULL, $uid = NULL, $result = FALSE, $skip_validation = FALSE) {
  global $user;
  $tag = empty($tag) ? 'vote' : $tag;
  $uid = empty($uid) ? $user->uid : $uid;

  // Bail out if the user's trying to vote on an invalid object.
  if (!$skip_validation && !fivestar_validate_target($type, $cid, $tag, $uid)) {
    return array();
  }

  // Sanity-check the incoming values.
  if (is_numeric($cid) && is_numeric($value)) {
    if ($value > 100) {
      $value = 100;
    }

    // Get the user's current vote.
    $criteria = array('entity_type' => $type, 'entity_id' => $cid, 'tag' => $tag, 'uid' => $uid);
    // Get the unique identifier for the user (IP Address if anonymous).
    $user_criteria = votingapi_current_user_identifier();
    $user_votes = votingapi_select_votes($criteria + $user_criteria);

    if ($value == 0) {
      votingapi_delete_votes($user_votes);
    }
    else {
      $votes = $criteria += array('value' => $value);
      votingapi_set_votes($votes, $user_votes);
    }
    return fivestar_get_votes($type, $cid, $tag, $uid);
  }
}

/**
 * Utility function to retreive VotingAPI votes.
 *
 * Note that this should not be used for general vote retreival, instead the
 * VotingAPI function votingapi_select_results() should be used, which is more
 * efficient when retrieving multiple votes.
 *
 * @param $type
 *   The content type for which to retreive votes.
 * @param $cid
 *   The content ID for which to retreive votes.
 * @param $tag
 *   The VotingAPI tag for which to retreive votes.
 * @param $uid
 *   Optional. A user ID for which to retreive votes.
 * @return
 *   An array of the following keys:
 *   - average: An array of VotingAPI results, including the average 'value'.
 *   - count: An array of VotingAPI results, including the count 'value'.
 *   - user: An array of VotingAPI results, including the user's vote 'value'.
 */
function fivestar_get_votes($type, $cid, $tag = 'vote', $uid = NULL) {
  global $user;

  if (!isset($uid)) {
    $uid = $user->uid;
  }

  $criteria = array(
    'entity_type' => $type,
    'entity_id' => $cid,
    'value_type' => 'percent',
    'tag' => $tag,
  );

  $votes = array(
    'average' => array(),
    'count' => array(),
    'user' => array(),
  );

  $results = votingapi_select_results($criteria);
  foreach ($results as $result) {
    if ($result['function'] == 'average') {
      $votes['average'] = $result;
    }
    if ($result['function'] == 'count') {
      $votes['count'] = $result;
    }
  }
  if ($uid) {
    $user_vote = votingapi_select_votes($criteria += array('uid' => $uid));
    if ($user_vote) {
      $votes['user'] = $user_vote[0];
      $votes['user']['function'] = 'user';
    }
  }
  else {
    // If the user is anonymous, we never bother loading their existing votes.
    // Not only would it be hit-or-miss, it would break page caching. Safer to always
    // show the 'fresh' version to anon users.
    $votes['user'] = array('value' => 0);
  }

  return $votes;
}

/**
 * Check that an item being voted upon is a valid vote.
 *
 * @param $type
 *   Type of target (currently only node is supported).
 * @param $id
 *   Identifier within the type (in this case nid).
 * @param $tag
 *   The VotingAPI tag string.
 * @param $uid
 *   The user trying to cast the vote.
 *
 * @return boolean
 */
function fivestar_validate_target($type, $id, $tag, $uid = NULL) {
  if (!isset($uid)) {
    $uid = $GLOBALS['user']->uid;
  }

  $access = module_invoke_all('fivestar_access', $type, $id, $tag, $uid);
  foreach ($access as $result) {
    if ($result == TRUE) {
      return TRUE;
    }
    if ($result === FALSE) {
      return FALSE;
    }
  }
}

/**
 * Implementation of hook_fivestar_access().
 *
 * This hook is called before every vote is cast through Fivestar. It allows
 * modules to allow voting on any type of content, such as nodes, users, or
 * comments, even though only nodes are supported by Fivestar directly.
 *
 * @param $type
 *   Type of target (currently only node is supported).
 * @param $id
 *   Identifier within the type (in this case nid).
 * @param $tag
 *   The VotingAPI tag string.
 * @param $uid
 *   The user ID trying to cast the vote.
 *
 * @return boolean or NULL
 *   Returns TRUE if voting is supported on this object.
 *   Returns NULL if voting is not supported on this object by this module.
 *   If needing to absolutely deny all voting on this object, regardless
 *   of permissions defined in other modules, return FALSE. Note if all
 *   modules return NULL, stating no preference, then access will be denied.
 */
function fivestar_fivestar_access($type, $id, $tag, $uid) {
  if ($type == 'node' && $node = node_load($id)) {
    if (variable_get('fivestar_'. fivestar_get_suffix($node->type, $tag), 0)) {
      return TRUE;
    }
  }
}

/**
 * Implementation of hook_fivestar_widgets().
 *
 * This hook allows other modules to create additional custom widgets for
 * the fivestar module.
 *
 * @return array
 *   An array of key => value pairs suitable for inclusion as the #options in a
 *   select or radios form element. Each key must be the location of a css
 *   file for a fivestar widget. Each value should be the name of the widget.
 */
function fivestar_fivestar_widgets() {
  $widgets_directory = drupal_get_path('module', 'fivestar') .'/widgets';
  $files = file_scan_directory($widgets_directory, '/\.css$/');

  $widgets = array();
  foreach ($files as $file) {
    if (strpos($file->filename, '-rtl.css') === FALSE) {
      $widgets[$file->uri] = drupal_ucfirst(str_replace('-color', '', $file->name));
    }
  }
  return $widgets;
}

/**
 * Implementation of hook_node_view().
 *
 * Adds the fievestar widget to the node view.
 */
function fivestar_node_view($node, $view_mode) {
  $exclude_modes = array(
    'preview',
    'search_index',
    'search_result',
    'rss',
  );
  if (!in_array($view_mode, $exclude_modes) && !isset($node->modr8_form_teaser) && variable_get('fivestar_'. $node->type, 0)) {
    if ($view_mode == 'teaser') {
      $position = variable_get('fivestar_position_teaser_'. $node->type, 'above');
    }
    else {
      $position = variable_get('fivestar_position_'. $node->type, 'above');
    }

    switch ($position) {
      case 'above':
      case 'below':
        if (user_access('rate content')) {
          $content = '';
          foreach (fivestar_get_tags() as $tag) {
            if (fivestar_validate_target('node', $node->nid, $tag)) {
              $node->content['fivestar_widget_' . $tag]['form'] = fivestar_widget_form($node, $tag);
              $node->content['fivestar_widget_' . $tag]['#weight'] = ($position == 'above') ? -10 : 50;
            }
          }
          break;
        } // Fall through to static if not allowed to rate.
        $position .= '_static';
      case 'above_static':
      case 'below_static':
        $content = '';
        foreach (fivestar_get_tags() as $tag) {
          if (fivestar_validate_target('node', $node->nid, $tag)) {
            $content .= fivestar_static('node', $node->nid, $node->type, $tag);
          }
        }
        if ($content) {
          $node->content['fivestar_widget'] = array(
            '#markup' => $content,
            '#weight' => strpos($position, 'above') === 0 ? -10 : 50,
          );
        }
        
        break;
      case 'link':
        $node->content['links']['fivestar_widget'] = array(
          '#links' => array(
            'fivestar-rate' => array(
              'title' => t('Rate'),
              'href' => 'node/'. $node->nid,
              'fragment' => 'fivestar-form-node-'. $node->nid,
              'attributes' => array('title' => t('Rate this @type', array('@type' => _node_types_build()->types[$node->type]->name))),
            ),
          ),
        );
        break;
    }
  }
}

function fivestar_block_info() {
  $blocks[0]['info'] = t('Fivestar: Rate this node');
  return $blocks;
}

function fivestar_block_view($delta = 0) {
  if (user_access('access content') && user_access('rate content') && (arg(2) == '' || arg(2) == 'view') && ($node = menu_get_object())) {
    $block = array('subject' => t('Rate This'));
    foreach (fivestar_get_tags() as $tag) {
      if (fivestar_validate_target('node', $node->nid, $tag)) {
        $block['content'][$tag] = fivestar_widget_form($node, $tag);
      }
    }
    return $block;
  }
}

function fivestar_widget_form($node, $tag = 'vote') {
  return drupal_get_form('fivestar_form_node_'. $node->nid .'_'. $tag, 'node', $node->nid, $tag);
}

/**
 * Get a private token used to protect links from CSRF attacks.
 */
function fivestar_get_token($value) {
  global $user;

  // Anonymous users don't get a session ID, which breaks page caching.
  $session_id = $user->uid ? session_id() : '';
  $private_key = drupal_get_private_key();
  return md5($session_id . $value . $private_key);
}

/**
 * Check to see if a token value matches the specified node.
 */
function fivestar_check_token($token, $value) {
  return fivestar_get_token($value) == $token;
}

/**
 * Implementation of hook_forms().
 *
 * This is necessary when multiple fivestar forms appear on the same page, each
 * requiring a separate form_id, but all using the same underlying callbacks.
 */
function fivestar_forms($form_id, $args) {
  if (strpos($form_id, 'fivestar_form') !== FALSE) {
    if ($form_id == 'fivestar_form_'. $args[0] .'_'. $args[1] .'_'. $args[2]) {
      $forms[$form_id] = array('callback' => 'fivestar_form');
      return $forms;
    }
  }
}

/**
 * Create the fivestar form for the current item.
 * Note that this is not an implementation of hook_form(). We should probably
 * change the function to reflect that.
 */
function fivestar_form($form, &$form_state, $content_type, $content_id, $tag) {
  global $user;

  if ($content_type == 'node') {
    if (is_numeric($content_id)) {
      $node = node_load($content_id);
    }
    else {
      return array();
    }
  }

  $suffix = fivestar_get_suffix($node->type, $tag);
  $star_display = variable_get('fivestar_style_' . $suffix, 'average');
  $text_display = variable_get('fivestar_text_' . $suffix, 'dual');

  if ($star_display == 'average' && ($text_display == 'average' || $text_display == 'none')) {
    // Save a query and don't retrieve the user vote unnecessarily.
    $votes = fivestar_get_votes($content_type, $content_id, $tag, 0);
  }
  else {
    $votes = fivestar_get_votes($content_type, $content_id, $tag);
  }

  $values = array(
    'user' => isset($votes['user']['value']) ? $votes['user']['value'] : 0,
    'average' => isset($votes['average']['value']) ? $votes['average']['value'] : 0,
    'count' => isset($votes['count']['value']) ? $votes['count']['value'] : 0,
  );

  $settings = array(
    'stars' => variable_get('fivestar_stars_' . $suffix, 5),
    'allow_clear' => variable_get('fivestar_unvote_' . $suffix, FALSE),
    'style' => $star_display,
    'text' => $text_display,
    'content_type' => $content_type,
    'content_id' => $content_id,
    'tag' => 'vote',
    'autosubmit' => TRUE,
    'title' => variable_get('fivestar_title_' . $suffix, 1) ? NULL : FALSE,
    'feedback_enable' => variable_get('fivestar_feedback_' . $suffix, 1),
    'labels_enable' => variable_get('fivestar_labels_enable_' . $suffix, 1),
    'labels' => variable_get('fivestar_labels_' . $suffix, array()),
    'tag' => $tag,
  );

  return fivestar_custom_widget(array(), $form_state, $values, $settings);
}

/**
 * Retreive and print out a static display of stars for a piece of content.
 *
 * @param $content_type
 *   The type of content that will have its vote retreived. i.e. "node".
 * @param $content_id
 *   The ID of the content that will have its vote retreived.
 * @param $node_type
 *   Optional. If retreiving a node's rating, passing in the node type will
 *   prevent Fivestar from doing an additional query to find it.
 * @param $tag
 *   Optional. The voting tag that will be retreived. Defaults to "vote" if none
 *   is specified.
 */
function fivestar_static($content_type, $content_id, $node_type = NULL, $tag = 'vote') {
  global $user;

  $criteria = array(
    'content_type' => $content_type,
    'content_id' => $content_id,
    'value_type' => 'percent',
    'tag' => 'vote',
  );

  $votes = fivestar_get_votes($content_type, $content_id, $tag);

  if ($content_type == 'node') {
    // Content type should always be passed to avoid this node load.
    if (!isset($node_type)) {
      $node = node_load($content_id);
      $node_type = $node->type;
    }

    $settings = fivestar_get_settings($node_type, $tag);
    $stars = $settings['stars'];
    switch ($settings['star_display']) {
      case 'average':
      case 'dual':
        $star_value = (isset($votes['average']['value'])) ? $votes['average']['value']: '';
        $title = $settings['title_display'] ? t('Average') : NULL;
        break;
      case 'user':
        $star_value = (isset($votes['user']['value'])) ? $votes['user']['value'] : '';
        $title = $settings['title_display'] ? t('Your rating') : NULL;
        break;
      case 'smart':
        $star_value = (isset($votes['user']['value'])) ? $votes['user']['value'] : $votes['average']['value'];
        $title = $settings['title_display'] ? $votes['user']['value'] ? t('Your rating') : t('Average') : NULL;
        break;
    }

    if ($tag != 'vote') {
      $title .= ' (' . ucfirst($tag) . ')';
    }

    // Set all text values, then unset the unnecessary ones.
    $user_value = (isset($votes['user']['value'])) ? $votes['user']['value'] : NULL;
    $average_value = (isset($votes['average']['value'])) ? $votes['user']['value'] : NULL;
    $count_value = (isset($votes['count']['value'])) ? $votes['user']['value'] : NULL;
    switch ($settings['text_display']) {
      case 'average':
        $user_value = NULL;
        break;
      case 'user':
        $average_value = NULL;
        break;
      case 'smart':
        if ($votes['user']['value']) {
          $average_value = NULL;
        }
        else {
          $user_value = NULL;
        }
        break;
    }
  }
  // Possibly add other content types here (comment, user, etc).
  else {
    $stars = 5;
    $star_value = $votes['average']['value'];
    $user_value = $votes['user']['value'];
    $average_value = $votes['average']['value'];
    $count_value = $votes['count']['value'];
  }

  $star_display = theme('fivestar_static', array(
    'rating' => $star_value,
    'stars' => $stars,
  ));
  $text_display = $settings['text_display'] == 'none' ? NULL : theme('fivestar_summary', array(
    'user_rating' => $user_value,
    'average_rating' => $average_value,
    'votes' => $count_value,
    'stars'=> $stars,
    'feedback_enable' =>FALSE,
  ));
  return theme('fivestar_static_element', array('star_display' => $star_display, 'title' => $title, 'description' => $text_display));
}

/**
 * Form builder; Build a custom Fivestar rating widget with arbitrary settings.
 *
 * This function is usually not called directly, instead call
 * drupal_get_form('fivestar_custom_widget', $values, $settings) when wanting
 * to display a widget.
 *
 * @param $form_state
 *   The form state provided by Form API.
 * @param $values
 *   An array of current vote values from 0 to 100, with the following array
 *   keys:
 *   - user: The user's current vote.
 *   - average: The average vote value.
 *   - count: The total number of votes so far on this content.
 * @param $settings
 *   An array of settings that configure the properties of the rating widget.
 *   Available keys for the settings include:
 *   - content_type: The type of content which will be voted upon.
 *   - content_id: The content ID which will be voted upon.
 *   - stars: The number of stars to display in this widget, from 2 to 10.
 *     Defaults to 5.
 *   - autosubmit: Whether the form should be submitted upon star selection.
 *     Defaults to TRUE.
 *   - allow_clear: Whether or not to show the "Clear current vote" icon when
 *     showing the widget. Defaults to FALSE.
 *   - required: Whether this field is required before the form can be
 *     submitted. Defaults to FALSE.
 *   - feedback_enable: Toggles the option to show the "Vote is being saved"
 *     text while a vote is being registered through AJAX. Defaults to TRUE.
 *   - labels_enable: Toggles the option to show the "Give it 2/5 stars" text
 *     while hovering over the stars with the mouse.
 *   - labels: An array of labels to be used. The number of labels should match
 *     the number of stars.
 *   - tag: The VotingAPI tag that will be registered by this widget. Defaults
 *     to "vote".
 */
function fivestar_custom_widget($form, &$form_state, $values, $settings) {
  $form = array(
    '#attributes' => array('class' => array('fivestar-widget')),
    '#redirect' => FALSE,
    '#theme' => 'fivestar_widget',
  );
  $form['#submit'][] = 'fivestar_form_submit';

  if (isset($settings['content_type'])) {
    $form['content_type'] = array(
      '#type' => 'hidden',
      '#value' => $settings['content_type'],
    );
  }

  if (isset($settings['content_id'])) {
    $form['content_id'] = array(
      '#type' => 'hidden',
      '#value' => $settings['content_id'],
    );
  }

  if (isset($settings['tag'])) {
    $form['tag'] = array(
      '#type' => 'hidden',
      '#value' => $settings['tag'],
    );
  }

  $form['vote'] = array(
    '#type' => 'fivestar',
    '#stars' => $settings['stars'],
    '#vote_count' => $values['count'],
    '#vote_average' => $values['average'],
    '#auto_submit' => isset($settings['autosubmit']) ? $settings['autosubmit'] : TRUE,
    '#auto_submit_path' => (!isset($settings['autosubmit']) || $settings['autosubmit']) ? 'fivestar/vote/'. $settings['content_type'] .'/'. $settings['content_id'] .'/' . $settings['tag'] : NULL,
    '#allow_clear' => $settings['allow_clear'],
    '#content_id' => isset($settings['content_id']) ? $settings['content_id'] : NULL,
    '#required' => isset($settings['required']) ? $settings['required'] : FALSE,
    '#feedback_enable' => isset($settings['feedback_enable']) ? $settings['feedback_enable'] : TRUE,
    '#labels_enable' => isset($settings['labels_enable']) ? $settings['labels_enable'] : TRUE,
    '#labels' => isset($settings['labels']) ? $settings['labels'] : NULL,
    '#tag' => isset($settings['tag']) ? $settings['tag'] : 'vote',
  );

  $form['destination'] = array(
    '#type' => 'hidden',
    '#value' => $_GET['q'],
  );

  $form['fivestar_submit'] = array(
    '#type' => 'submit',
    '#value' => t('Rate'),
    '#attributes' => array('class' => array('fivestar-submit')),
  );

  $form['vote']['#attributes']['class'] = isset($form['vote']['#attributes']['class']) ? $form['vote']['#attributes']['class'] : array();
  $settings['feedback_enable'] = isset($settings['feedback_enable']) ? $settings['feedback_enable'] : TRUE;
  switch ($settings['text']) {
    case 'user':
      $form['vote']['#description'] = theme('fivestar_summary', array(
        'user_rating' => $values['user'],
        'votes' => $settings['style'] == 'dual' ? NULL : $values['count'],
        'stars' => $settings['stars'],
        'feedback_enable' => $settings['feedback_enable'],
      ));
      $form['vote']['#attributes']['class'][] = 'fivestar-user-text';
      break;
    case 'average':
      $form['vote']['#description'] = $settings['style'] == 'dual' ? NULL : theme('fivestar_summary', array(
        'average_rating' => $values['average'],
        'votes' => $values['count'],
        'stars' => $settings['stars'],
        'feedback_enable' => $settings['feedback_enable'],
      ));
      $form['vote']['#attributes']['class'][] = 'fivestar-average-text';
      break;
    case 'smart':
      $form['vote']['#description'] = ($settings['style'] == 'dual' && !$values['user']) ? NULL : theme('fivestar_summary', array(
        'user_rating' => $values['user'],
        'average_rating' => $values['user'] ? NULL : $values['average'],
        'votes' => $settings['style'] == 'dual' ? NULL : $values['count'],
        'stars' => $settings['stars'],
        'feedback_enable' => $settings['feedback_enable'],
      ));
      $form['vote']['#attributes']['class'][] = 'fivestar-smart-text';
      $form['vote']['#attributes']['class'][] = $values['user'] ? 'fivestar-user-text' : 'fivestar-average-text';
      break;
    case 'dual':
      $form['vote']['#description'] = theme('fivestar_summary', array(
        'user_rating' => $values['user'],
        'average_rating' => $settings['style'] == 'dual' ? NULL : $values['average'],
        'votes' => $settings['style'] == 'dual' ? NULL : $values['count'],
        'stars' => $settings['stars'],
        'feedback_enable' => $settings['feedback_enable'],
      ));
      $form['vote']['#attributes']['class'][] = ' fivestar-combo-text';
      break;
  }

  switch ($settings['style']) {
    case 'average':
      $form['vote']['#title'] = t('Average');
      $form['vote']['#default_value'] = $values['average'];
      $form['vote']['#attributes']['class'][] = 'fivestar-average-stars';
      break;
    case 'user':
      $form['vote']['#title'] = t('Your rating');
      $form['vote']['#default_value'] = $values['user'];
      $form['vote']['#attributes']['class'][] = 'fivestar-user-stars';
      break;
    case 'smart':
      $form['vote']['#title'] = $values['user'] ? t('Your rating') : t('Average');
      $form['vote']['#default_value'] = $values['user'] ? $values['user'] : $values['average'];
      $form['vote']['#attributes']['class'][] = 'fivestar-smart-stars '. ($values['user'] ? 'fivestar-user-stars' : 'fivestar-average-stars');
      break;
    case 'dual':
      $form['vote']['#title'] = t('Your rating');
      $form['vote']['#default_value'] = $values['user'];
      $form['vote']['#attributes']['class'][] = 'fivestar-combo-stars';
      $form['#attributes']['class'][] = 'fivestar-combo-stars';
      $static_average = theme('fivestar_static', array(
        'rating' => $values['average'],
        'stars' => $settings['stars'],
        'tag' => $settings['tag'],
      ));
      if ($settings['text'] == 'none' && !$settings['labels_enable'] && !$settings['feedback_enable']) {
        $static_description = NULL;
      }
      elseif ($settings['text'] != 'none') {
        $static_description = theme('fivestar_summary', array(
          'averrage_rating' => $settings['text'] == 'user' ? NULL : (isset($values['average']) ? $values['average'] : 0),
          'votes' => isset($values['count']) ? $values['count'] : 0,
          'stars' => $settings['stars'],
          'feedback_enable' => FALSE
        ));
      }
      else {
        $static_description = '&nbsp;';
      }
      $form['average'] = array(
        '#type' => 'markup',
        '#markup' => theme('fivestar_static_element', array(
          'star_display' => $static_average,
          'title' => $settings['title'] !== FALSE ? t('Average') : NULL,
          'description' => $static_description,
        )),
        '#weight' => -1,
      );
      break;
  }

  // Set an over-ridding title if passed in.
  // An empty title won't change the default, a string will set a new title,
  // and title === FALSE will unset the title entirely.
  if (isset($settings['title'])) {
    if ($settings['title'] !== FALSE) {
      $form['vote']['#title'] = $settings['title'];
    }
    else {
      unset($form['vote']['#title']);
      unset($form['average']['#title']);
    }
  }
  elseif ($settings['tag'] && $settings['tag'] != 'vote') {
    $form['vote']['#title'] .= ' (' . ucfirst($settings['tag']) . ')';
  }

  return $form;
}

/**
 * Submit handler for the above form (non-javascript version).
 */
function fivestar_form_submit($form, &$form_state) {
  if ($form_state['values']['form_id'] == 'fivestar_form_'. $form_state['values']['content_type'] .'_'. $form_state['values']['content_id'] . '_' . $form_state['values']['tag']) {
    // Cast the vote.
    _fivestar_cast_vote($form_state['values']['content_type'], $form_state['values']['content_id'], $form_state['values']['vote'], $form_state['values']['tag']);
    votingapi_recalculate_results($form_state['values']['content_type'], $form_state['values']['content_id']);

    // Set a message that the vote was received.
    if ($form_state['values']['vote'] === '0') {
      drupal_set_message(t('Your vote has been cleared.'));
    }
    elseif (is_numeric($form_state['values']['vote'])) {
      drupal_set_message(t('Thank you for your vote.'));
    }
    // Regenerate the page with a drupal_goto() to update the current values.
    drupal_goto();
  }
}

/**
 * Implementation of hook_elements().
 *
 * Defines 'fivestar' form element type
 */
function fivestar_element_info() {
  $type['fivestar'] = array(
    '#input' => TRUE,
    '#stars' => 5,
    '#widget' => 'stars',
    '#allow_clear' => FALSE,
    '#auto_submit' => FALSE,
    '#auto_submit_path' => '',
    '#labels_enable' => TRUE,
    '#feedback_enable' => TRUE,
    '#process' => array('fivestar_expand'),
  );
  return $type;
}

/**
 * Theme the fivestar form element by adding necessary css and javascript.
 */
function theme_fivestar($variables) {
  $element = $variables['element'];
  if (empty($element['#description'])) {
    if ($element['#feedback_enable']) {
      $element['#description'] = '<div class="fivestar-summary fivestar-feedback-enabled">&nbsp;</div>';
    }
    elseif ($element['#labels_enable']) {
      $element['#description'] = '<div class="fivestar-summary">&nbsp;</div>';
    }
  }

  return theme('form_element', array('element' => $element));
}

/**
 * Theme the straight HTML version of the fivestar select list. This is used
 * to remove the wrapping 'form-item' div from the select list.
 */
function theme_fivestar_select($variables) {
  $element = $variables['element'];
  element_set_attributes($element, array('id', 'name', 'size'));
  _form_set_class($element, array('form-select'));
  return '<select' . drupal_attributes($element['#attributes']) . '>' . form_select_options($element) . '</select>';
}
/**
 * Theme an entire fivestar widget, including the submit button and the normal
 * fivestar widget themed in the theme_fivestar() function.
 */
function theme_fivestar_widget($variables) {
  $form = $variables['form'];
  // Only print out the summary if text is being displayed or using rollover text.
  if (empty($form['vote']['#description']) && strpos($form['vote']['#prefix'], 'fivestar-labels-hover') === FALSE) {
    unset($form['vote']['#description']);
  }

  $class = 'fivestar-form';
  $class .= '-'. (isset($form['vote']['#tag']) ? $form['vote']['#tag'] : 'vote');
  $class .= '-'. (isset($form['content_id']['#value']) ? $form['content_id']['#value'] : 0);

  $output  = '';
  $output .= '<div class="'. $class .' clear-block">';
  $output .= drupal_render_children($form);
  $output .= '</div>';
  return $output;
}

/**
 * Display a plain HTML view-only version of the widget with a specified rating.
 *
 * @param $rating
 *   The desired rating to display out of 100 (i.e. 80 is 4 out of 5 stars).
 * @param $stars
 *   The total number of stars this rating is out of.
 * @param $tag
 *   Allows multiple ratings per node.
 * @return
 *   A themed HTML string representing the star widget.
 */
function theme_fivestar_static($variables) {
  $rating  = $variables['rating'];
  $stars = $variables['stars'];
  $tag = $variables['tag'];
  $output = '';
  $output .= '<div class="fivestar-widget-static fivestar-widget-static-'. $tag .' fivestar-widget-static-'. $stars .' clear-block">';
  if (empty($stars)) {
    $stars = 5;
  }
  $numeric_rating = $rating/(100/$stars);
  for ($n=1; $n <= $stars; $n++) {
    $star_value = ceil((100/$stars) * $n);
    $prev_star_value = ceil((100/$stars) * ($n-1));
    $zebra = ($n % 2 == 0) ? 'even' : 'odd';
    $first = $n == 1 ? ' star-first' : '';
    $last = $n == $stars ? ' star-last' : '';
    $output .= '<div class="star star-'. $n .' star-'. $zebra . $first . $last .'">';
    if ($rating < $star_value && $rating > $prev_star_value) {
      $percent = (($rating - $prev_star_value) / ($star_value - $prev_star_value)) * 100;
      $output .= '<span class="on" style="width: '. $percent .'%">';
    }
    elseif ($rating >= $star_value) {
      $output .= '<span class="on">';
    }
    else {
      $output .= '<span class="off">';
    }
    if ($n == 1)$output .= $numeric_rating;
    $output .= '</span></div>';
  }
  $output .= '</div>';
  return $output;
}

/**
 * Display the text associated with a static star display.
 *
 * Note that passing in explicit data types is extremely important when using
 * this function. A NULL value will exclude the value entirely from display,
 * while a 0 value indicates that the text should be shown but it has no value
 * yet.
 *
 * All ratings are from 0 to 100.
 *
 * @param $user_rating
 *   The current user's rating.
 * @param $average
 *   The average rating.
 * @param $votes
 *   The total number of votes.
 * @param $stars
 *   The number of stars being displayed.
 * @param $feedback
 *   A toggle that enables AJAX indicator message when a vote is being saved.
 * @return
 *   A themed HTML string representing the star widget.
 */
function theme_fivestar_summary($variables) {
  extract($variables, EXTR_SKIP);
  $output = '';
  $div_class = '';
  if (isset($user_rating)) {
    $div_class = isset($votes) ? 'user-count' : 'user';
    $user_stars = round(($user_rating * $stars) / 100, 1);
    $output .= '<span class="user-rating">'. t('Your rating: <span>!stars</span>', array('!stars' => $user_rating ? $user_stars : t('None'))) .'</span>';
  }
  if (isset($user_rating) && isset($average_rating)) {
    $output .= ' ';
  }
  if (isset($average_rating)) {
    $div_class = isset($votes) ? 'average-count' : 'average';
    $average_stars = round(($average_rating * $stars) / 100, 1);
    $output .= '<span class="average-rating">'. t('Average: <span>!stars</span>', array('!stars' => $average_stars)) .'</span>';
  }
  if (isset($user_rating) && isset($average_rating)) {
    $div_class = 'combo';
  }

  if (isset($votes) && !(isset($user_rating) || isset($average_rating))) {
    $output .= ' <span class="total-votes">'. format_plural($votes, '<span>@count</span> vote', '<span>@count</span> votes') .'</span>';
    $div_class = 'count';
  }
  elseif (isset($votes)) {
    $output .= ' <span class="total-votes">('. format_plural($votes, '<span>@count</span> vote', '<span>@count</span> votes') .')</span>';
  }

  if ($votes === 0) {
    $output = '<span class="empty">'. t('No votes yet') .'</span>';
  }

  $output = '<div class="fivestar-summary fivestar-summary-'. $div_class . ($feedback_enable ? ' fivestar-feedback-enabled' : '') .'">'. $output .'</div>';
  return $output;
}

/**
 * Display a static fivestar value as stars with a title and description.
 */
function theme_fivestar_static_element($variables) {
  $output = '';
  $output .= '<div class="fivestar-static-form-item">';
  $element = array(
    '#type' => 'item',
    '#title' => $variables['title'],
    '#description' => $variables['description'],
    '#children' => $variables['star_display'],
  );

  $output .= theme('form_element', array('element' => $element));
  $output .= '</div>';
  return $output;
}

/**
 * Fetch the necessary CSS files to render the fivestar widget.
 */
function fivestar_add_css($widget_css = NULL) {
  // Add fivestar CSS.
  drupal_add_css(drupal_get_path('module', 'fivestar') .'/css/fivestar.css');

  // Add widget specific CSS.
  if (!isset($widget_css)) {
    $widget_css = variable_get('fivestar_widget', 'default');
  }

  if ($widget_css != 'default') {
    drupal_add_css($widget_css);
  }
}

/**
 * Add necessary JS files and settings to render the fivestar widget.
 */
function fivestar_add_js() {
  static $js_added = FALSE;

  // Add necessary javascript only once per page.
  if (!$js_added) {
    $settings = array(
      'titleUser' => t('Your rating') .': ',
      'titleAverage' => t('Average') .': ',
      'feedbackSavingVote' => t('Saving your vote...'),
      'feedbackVoteSaved' => t('Your vote has been saved.'),
      'feedbackDeletingVote' => t('Deleting your vote...'),
      'feedbackVoteDeleted' => t('Your vote has been deleted.'),
    );

    drupal_add_js(drupal_get_path('module', 'fivestar') .'/js/fivestar.js');
    drupal_add_js(array('fivestar' => $settings), 'setting');
    $js_added = TRUE;
  }
}


/**
 * Add Inline CSS to the page, only used on admin/config/content/fivestar page.
 */
function fivestar_add_inline_css($widget_key = NULL, $css = NULL, $reset = FALSE) {
  static $inline_css;

  if (!isset($inline_css) || $reset) {
    $inline_css = array();
  }

  if (isset($widget_key) && isset($inline_css)) {
    $inline_css[$widget_key] = $css;
  }

  return $inline_css;
}

/**
 * Retrieve a list of all inline CSS to be added to the page.
 */
function fivestar_get_inline_css() {
  $inline_css = fivestar_add_inline_css();
  return implode("\n", $inline_css);
}

/**
 * Process callback for fivestar_element -- see fivestar_element()
 */
function fivestar_expand($element) {

  if (isset($element['#vote_count'])) {
    $element['vote_count'] =  array(
      '#type' => 'hidden',
      '#value' => $element['#vote_count'],
    );
  }

  if (isset($element['#vote_average'])) {
    $element['vote_average'] =  array(
      '#type' => 'hidden',
      '#value' => $element['#vote_average'],
    );
  }

  if ($element['#auto_submit'] && !empty($element['#auto_submit_path'])) {
    $element['auto_submit_path'] = array(
      '#type' => 'hidden',
      '#value' => url($element['#auto_submit_path']),
      '#attributes' => array('class' => 'fivestar-path'),
    );
    $element['auto_submit_token'] = array(
      '#type' => 'hidden',
      '#value' => fivestar_get_token($element['#auto_submit_path']),
      '#attributes' => array('class' => 'fivestar-token'),
    );
  }

  if (!isset($element['#default_value'])) {
    $element['#default_value'] = 0;
  }

  $options = array('-' => t('Select rating'));
  $default_value = $element['#default_value'];
  for ($i = 0; $i <= $element['#stars']; $i++) {
    $this_value = ceil($i * 100/$element['#stars']);
    $next_value = ceil(($i+1) * 100/$element['#stars']);

    // Display clear button only if enabled.
    if ($element['#allow_clear'] == TRUE && $i == 0) {
      $options[$this_value] = isset($element['#labels'][$i]) ? t(filter_xss_admin($element['#labels'][$i])) : t('Cancel rating');
    }
    // Display a normal star value.
    if ($i > 0) {
      if (isset($element['#labels'][$i])) {
        $options[$this_value] = $element['#labels'][$i] == '' ? $i : t(filter_xss_admin($element['#labels'][$i]), array('@star' => $i, '@count' => $element['#stars']));
      }
      else {
        $options[$this_value] = t('Give it @star/@count', array('@star' => $i, '@count' => $element['#stars']));
      }
    }
    // Round up the default value to the next exact star value if needed.
    if ($this_value < $element['#default_value'] && $next_value > $element['#default_value']) {
      $default_value = $next_value;
    }
  }

  $element['vote'] = array(
    '#type' => 'select',
    '#options' => $options,
    '#required' => $element['#required'],
    '#default_value' => $default_value,
    '#parents' => $element['#parents'],
    '#theme' => 'fivestar_select',
    '#weight' => $element['#weight'],
  );

  // If a default value is not exactly on a radio value, round up to the next one
  if ($element['#default_value'] > $this_value && $element['#default_value'] <= $next_value) {
    $element['vote']['#default_value'] = $next_value;
  }

  $class = isset($element['#attributes']['class']) ? $element['#attributes']['class'] : array();
  $class[] = 'fivestar-form-item';
  if ($element['#labels_enable']) {
    // Set a class for the display of label text on hover.
    $class[] = 'fivestar-labels-hover';
  }
  $element['#prefix'] = '<div ' . drupal_attributes(array('class' => $class)) . '>';
  $element['#suffix'] = '</div>';

  // Add validation function that considers a 0 value as empty.
  $element['#element_validate'] = array('fivestar_validate');

  return $element;
}

/**
 * An #element_validate function for "fivestar" elements.
 */
function fivestar_validate($element, &$form_state) {
  if ($element['#required'] && (empty($element['#value']) || $element['#value'] == '-')) {
    form_error($element, t('!name field is required.', array('!name' => $element['#title'])));
  }
}

/**
 * Implementation of hook_votingapi_views_formatters().
 */
function fivestar_votingapi_views_formatters($details = array()) {
  if ($details->field == 'value') {
    return array(
      'fivestar_views_value_display_handler' => t('Fivestar Stars (display only)'),
      'fivestar_views_value_text_handler' => t('Fivestar Stars (text star count)'),
      'fivestar_views_widget_compact_handler' => t('Fivestar Stars (clickable, no text)'),
      'fivestar_views_widget_normal_handler' => t('Fivestar Stars (clickable, with text)'),
    );
  }
}

/**
 * VotingAPI Views formatter for displaying static stars.
 */
function fivestar_views_value_display_handler($value, $field, $columns) {
  // Determine number of stars to display
  // TODO need to get the tag here to support >1 tag
  // For now we're only going to support one tag ("vote").
  // We'll add the multiple tag once the module is somewhat stable.
  $tag = 'vote';

  if ($field->view->base_table == 'node') {
    if (isset($columns->node_type)) {
      $stars = variable_get('fivestar_stars_'. $columns->node_type, 5);
    }
    else {
      $node_type = db_query("SELECT type FROM {node} WHERE nid = :nid", array(':nid' => $columns->nid))->fetchField();
      $stars = variable_get('fivestar_stars_'. (!isset($node_type) ? 'default' : $node_type), 5);
    }

    // Find the VotingAPI tag for this field.
    foreach ($field->query->table_queue[$field->relationship]['join']->extra as $votingapi_setting) {
      if ($votingapi_setting['field'] == 'tag') {
        $tag = $votingapi_setting['value'];
      }
    }
  }
  else {
    $stars = 5;
    $tag = 'vote';
  }

  return theme('fivestar_static', array(
    'rating' => $value,
    'stars' => $stars,
    'tag' => $tag,
  ));
}

/**
 * VotingAPI Views formatter for displaying number of stars as text.
 */
function fivestar_views_value_text_handler($value, $field, $columns) {
  // Get the number of stars for this node type.
  $node_type = isset($columns->node_type) ? $columns->node_type : db_query("SELECT type FROM {node} WHERE nid = :nid", array(':nid' => $columns->nid))->fetchField();
  $stars = variable_get('fivestar_stars_'. $node_type, 5);

  // If displaying a user's vote, always display a whole value.
  if ($field->table == 'votingapi_vote') {
    return ceil(($value / 100) * $stars);
  }
  else {
    if ($field->options['set_precision']) {
      return round(($value / 100) * $stars, $field->options['precision']);
    }
    return ($value / 100) * $stars;
  }
}

/**
 * VotingAPI Views formatter for displaying rating widget without text.
 */
function fivestar_views_widget_compact_handler($value, $field, $columns) {
  return fivestar_views_widget_handler($value, $field, $columns, FALSE);
}

/**
 * VotingAPI Views formatter for displaying rating widget with text.
 */
function fivestar_views_widget_normal_handler($value, $field, $columns) {
  return fivestar_views_widget_handler($value, $field, $columns, TRUE);
}

/**
 * Generic VotingAPI Views formatter for displaying rating widget.
 */
function fivestar_views_widget_handler($value, $field, $columns, $summary) {
  // For now we're only supporting one tag.
  $tag = 'vote';
  // If the user can't rate, use the display handler.
  if (!user_access('rate content')) {
    return fivestar_views_value_display_handler($value, $field, $columns);
  }

  if ($field->view->base_table == 'node') {

    // Find the VotingAPI tag for this field.
    foreach ($field->query->table_queue[$field->relationship]['join']->extra as $votingapi_setting) {
      if ($votingapi_setting['field'] == 'tag') {
        $tag = $votingapi_setting['value'];
      }
    }

    $content_type = 'node';
    $content_id = $columns->nid;
    $node_type = isset($columns->node_type) ? $columns->node_type : db_query("SELECT type FROM {node} WHERE nid = :nid", array(":nid" => $columns->nid))->fetchField();
    $values = array(
      'user' => 0,
      'average' => 0,
      'count' => 0,
    );

    if ($field->table == 'votingapi_vote') {
      $values['user'] = $value;
    }

    if ($field->table == 'votingapi_cache') {
      $values['average'] = $value;
    }

    // Only pull in all the votes if we need to display the summary text.
    if ($summary) {
      $votes = fivestar_get_votes($content_type, $content_id, $tag);
      if ($field->table != 'votingapi_vote') {
        $values['user'] = isset($votes['user']['value']) ? $votes['user']['value'] : 0;
      }
      if ($field->table != 'votingapi_cache') {
        $values['average'] = isset($votes['average']['value']) ? $votes['average']['value'] : 0;
      }
      $values['count'] = isset($votes['count']['value']) ? $votes['count']['value'] : 0;
    }

    $settings = array(
      'stars' => variable_get('fivestar_stars_'. $node_type, 5),
      'allow_clear' => variable_get('fivestar_unvote_'. $node_type, FALSE),
      'style' => $field->table == 'votingapi_vote' ? 'user' : 'average',
      'text' => $summary ? variable_get('fivestar_text_'. $node_type, 'dual') : 'none',
      'content_type' => $content_type,
      'content_id' => $content_id,
      'tag' => $tag,
      'autosubmit' => TRUE,
      'title' => FALSE,
      'feedback_enable' => $summary ? variable_get('fivestar_feedback_'. $node_type, 1) : FALSE,
      'labels_enable' => $summary ? variable_get('fivestar_labels_enable_'. $node_type, 1) : FALSE,
      'labels' => $summary ? variable_get('fivestar_labels_'. $node_type, array()) : array(),
    );

    return drupal_get_form('fivestar_custom_widget', $values, $settings);
  }
  else {
    return theme('fivestar_static', array(
      'rating' => $value,
      'stars' => 5,
    ));
  }
}

function fivestar_get_tags() {
  $tags_txt = variable_get('fivestar_tags', 'vote');
  $tags_exploded = explode(',', $tags_txt);

  $tags = array();
  $got_vote = false;
  foreach ($tags_exploded as $tag) {
    $tag_trimmed = trim($tag);
    if ($tag_trimmed) {
      $tags[] = $tag_trimmed;
      if ($tag_trimmed == 'vote') {
        $got_vote = true;
      }
    }
  }

  if (!$got_vote) {
    $tags[] = 'vote';
  }
  return $tags;
}

/**
 * Gets the variable suffix for node/tag-specific variables.
 *
 * Note that for backwards compatibility, the tag suffix is omitted for the tag
 * "vote". So instead of "story_vote", this just returns "story".
 */
function fivestar_get_suffix($node_type, $tag) {
  return $node_type . ($tag == 'vote' ? '' : '_' . $tag);
}

/**
 * Get all the settings set for a specific node type.
 */
function fivestar_get_settings($node_type, $tag) {
  $suffix = fivestar_get_suffix($node_type, $tag);

  $settings = array(
    'fivestar' => variable_get('fivestar_' . $suffix, 0),
    'stars' => variable_get('fivestar_stars_' . $suffix, 5),
    'unvote_enable' => variable_get('fivestar_unvote_' . $suffix, 0),
    'feedback_enable' => variable_get('fivestar_feedback_'. $suffix, 1),
    'labels_enable' => variable_get('fivestar_labels_enable_'. $suffix, 1),
    'labels' => variable_get('fivestar_labels_'. $suffix, array()),
    'star_display' => variable_get('fivestar_style_' . $suffix, 'average'),
    'text_display' => variable_get('fivestar_text_' . $suffix, 'dual'),
    'title_display' => variable_get('fivestar_title_' . $suffix, 1),
    'position' => variable_get('fivestar_position_' . $suffix, 'below'),
    'position_teaser' => variable_get('fivestar_position_teaser_' . $suffix, 'hidden'),
  );

  // Set default labels.
  if ($settings['stars'] == 5 && empty($settings['labels'])) {
    $settings['labels'] = array(t('Cancel rating'), t('Poor'), t('Okay'), t('Good'), t('Great'), t('Awesome'));
  }
  for ($n = 0; $n <= 10; $n++) {
    $settings['labels'][$n] = isset($settings['labels'][$n]) ? $settings['labels'][$n] : t('Give it @star/@count');
  }

  return $settings;
}


/**
 * Implementation of hook_votingapi_metadata_alter().
 */
function fivestar_votingapi_metadata_alter(&$data) {
  // TODO: This needs porting 
  // static $tags;
  // if (!isset($tags)) {
  //   $tags = array();
  // 
    // // Grab the list of fields to update.
    // foreach (content_types_install() as $type_name => $fields) {
    //   foreach ($fields as $field) {
    //     if ($field['type'] == 'fivestar') {
    //       if (!empty($field['axis'])) {
    //         $data['tags'][$field['axis']] = array(
    //           'name' => drupal_ucfirst($field['axis']),
    //           'description' => t('Used by %field in the %type content type.', array('%type' => $type_name, '%field' => $field['field_name'])),
    //           'module' => 'fivestar', // This is optional; we can add it for our own purposes.
    //         );
    //       }
    //     }
    //   }
    // }
  // }
  // return $tags;
}