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Drupal example source code file (fivestar.module)

This example Drupal source code file (fivestar.module) is included in the DevDaily.com "Drupal Source Code Warehouse" project. The intent of this project is to help you "Learn Drupal by Example".

PHP - Drupal tags/keywords

array, element, form, function, if, isset, null, output, php, return, stars, type, value, variable

The fivestar.module Drupal example source code

<?php
// $Id: fivestar.module,v 1.13.2.72 2009/10/04 17:16:48 ezrag Exp $

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

function fivestar_help($path, $arg) {
  $output = '';
  switch ($path) {
    case 'admin/settings/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/content/types</a> and edit the type you would like to rate.', array('!types' => url('admin/content/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', $steps, NULL, 'ol');
  }
  return $output;
}

/**
 * Implementation of hook_menu().
 *
 * Provides a callback url where votes can be submitted by the client-side
 * javascript.
 */
function fivestar_menu() {
  $items = array();
  $items['admin/settings/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'              => 'fivestar_color.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'              => 'fivestar_color.inc',
  );
  $items['fivestar/preview/node'] = array(
    'page callback'     => 'fivestar_preview',
    'access callback'   => 'user_access',
    'access arguments'  => array('administer content types'),
    'type'              => MENU_CALLBACK,
  );
  $items['fivestar/vote'] = array(
    'page callback'     => 'fivestar_vote',
    'access callback'   => 'user_access',
    'access arguments'  => array('rate content'),
    'type'              => MENU_CALLBACK,
  );
  return $items;
}

/**
 * Implementation of hook_init().
 *
 * These includes do not need to be loaded for cached pages.
 */
function fivestar_init() {
  if (module_exists('content')) {
    module_load_include('inc', 'fivestar', '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_perm().
 *
 * Exposes permissions for rating content, viewing aggregate ratings, and using PHP
 * snippets when configuring fivestar CCK fields.
 */
function fivestar_perm() {
  return array('rate content', 'use PHP for fivestar target');
}

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

/**
 * Implementation of hook_form_alter().
 *
 * Adds fivestar enaable and position to the node-type configuration form.
 */
function fivestar_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'node_type_form' && isset($form['identity']['type'])) {
    // Goofy hack to get the buttons at the end of the array.
    $form['workflow']['#weight'] = isset($form['workflow']['#weight']) ? $form['workflow']['#weight'] + 1 : 1;
    $form['submit']['#weight'] = isset($form['submit']['#weight']) ? $form['submit']['#weight'] + 1 : 1;
    $form['delete']['#weight'] = isset($form['delete']['#weight']) ? $form['delete']['#weight'] + 1 : 1;

    $form['fivestar'] = array(
      '#type' => 'fieldset',
      '#title' => t('Fivestar ratings'),
      '#collapsible' => TRUE,
      '#collapsed' => !variable_get('fivestar_'. $form['#node_type']->type, 0),
      '#description' => t('To rate this content, enable Fivestar rating below. These settings will be used for both comments (if available) and direct rating.'),
      '#theme' => 'fivestar_node_type_form',
      '#attributes' => array('id' => 'fivestar-node-type-form'),
    );

    $form['fivestar']['fivestar'] = array(
      '#type' => 'checkbox',
      '#title' => t('Enable Fivestar rating'),
      '#default_value' => variable_get('fivestar_'. $form['#node_type']->type, 0),
      '#return_value' => 1,
      '#weight' => -5,
    );

    $form['fivestar']['fivestar_stars'] = array(
      '#type' => 'select',
      '#title' => t('Number of stars'),
      '#options' => drupal_map_assoc(range(1, 10)),
      '#default_value' => variable_get('fivestar_stars_'. $form['#node_type']->type, 5),
      '#weight' => -4,
    );


    $form['fivestar']['labels'] = array(
      '#type' => 'fieldset',
      '#title' => t('Star Labels'),
      '#collapsible' => TRUE,
      '#collapsed' => TRUE,
      '#description' => t('These star labels appear as the link title when javascript is enabled as well as the select list options when javascript is disabled.'),
    );

    $form['fivestar']['labels']['fivestar_labels_enable'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display labels on mouse over'),
      '#default_value' => variable_get('fivestar_labels_enable_'. $form['#node_type']->type, 1),
      '#return_value' => 1,
      '#weight' => -5,
      '#description' => t('When enabled, the star labels will dynamically appear underneath the stars as the user hovers over each star to provide a more descriptive qualitative meaning for each star value.'),
    );

    // Create the Mouseover text forms for each of the rating options
    // This form depends on the number of stars, and these extra textfields will be hidden with javascript
    $star_count = variable_get('fivestar_stars_'. $form['#node_type']->type, 5);
    $labels = variable_get('fivestar_labels_'. $form['#node_type']->type, array());
    for ($n = 0; $n <= 10; $n++) {
      if ($star_count == 5 && $n <= 5) {
        // If the default 5 stars are chosen, then use these five default label values.
        $default_labels = array(t('Cancel rating'), t('Poor'), t('Okay'), t('Good'), t('Great'), t('Awesome'));
      }
      elseif ($n == 0) {
        $default_labels[$n] = t('Cancel rating');
      }
      else {
        $default_labels[$n] = t('Give it @star/@count');
      }
      $form['fivestar']['labels']['fivestar_label_'. $n] = array(
        '#type' => 'textfield',
        '#title' => $n > 0 ? t('Star @star label', array('@star' => $n)) : t('Cancel label'),
        '#default_value' => isset($labels[$n]) ? $labels[$n] : $default_labels[$n],
        '#prefix' => '<div id="fivestar-label-'. $n .'" class="fivestar-label">',
        '#suffix' => '</div>',
        '#size' => 30,
      );
    }

    $form['fivestar']['direct'] = array(
      '#type' => 'fieldset',
      '#title' => t('Direct rating widget'),
      '#collapsible' => FALSE,
      '#description' => t('These settings allow you to display a rating widget to your users while they are viewing content of this type. Rating will immediately register a vote for that piece of content.'),
      '#weight' => 2,
    );

    $form['fivestar']['direct']['fivestar_style'] = array(
      '#type' => 'select',
      '#title' => t('Star display style'),
      '#default_value' => variable_get('fivestar_style_'. $form['#node_type']->type, 'average'),
      '#options' => array(
        'average' => t('Display average vote value'),
        'user'    => t('Display user vote value'),
        'smart'   => t('User vote if available, average otherwise'),
        'dual'    => t('Both user and average vote'),
      ),
    );

    $form['fivestar']['direct']['fivestar_text'] = array(
      '#type' => 'select',
      '#title' => t('Text display style'),
      '#default_value' => variable_get('fivestar_text_'. $form['#node_type']->type, 'dual'),
      '#options' => array(
        'none'    => t('Display no text beneath stars'),
        'average' => t('Current average in text'),
        'user'    => t('User current vote in text'),
        'smart'   => t('User vote if available, average otherwise'),
        'dual'    => t('Both user and average vote'),
      ),
    );

    $form['fivestar']['direct']['fivestar_title'] = array(
      '#type' => 'checkbox',
      '#title' => t('Show widget title'),
      '#default_value' => variable_get('fivestar_title_'. $form['#node_type']->type, 1),
      '#return_value' => 1,
    );

    $form['fivestar']['direct']['fivestar_feedback'] = array(
      '#type' => 'checkbox',
      '#title' => t('Enable feedback during vote saving and deletion'),
      '#default_value' => variable_get('fivestar_feedback_'. $form['#node_type']->type, 1),
      '#return_value' => 1
    );

    $form['fivestar']['direct']['fivestar_unvote'] = array(
      '#type' => 'checkbox',
      '#title' => t('Allow users to undo their votes'),
      '#default_value' => variable_get('fivestar_unvote_'. $form['#node_type']->type, 0),
      '#return_value' => 1,
    );

    $form['fivestar']['direct']['fivestar_position_teaser'] = array(
      '#type' => 'select',
      '#title' => t('Teaser display'),
      '#default_value' => variable_get('fivestar_position_teaser_'. $form['#node_type']->type, 'hidden'),
      '#options' => array(
        'above' => t('Clickable widget above teaser'),
        'below' => t('Clickable widget below teaser'),
        'above_static' => t('Static display above teaser'),
        'below_static' => t('Static display below teaser'),
        'link' => t('Teaser link to full node widget'),
        'hidden' => '<'. t('hidden') .'>',
      ),
    );

    $form['fivestar']['direct']['fivestar_position'] = array(
      '#type' => 'select',
      '#title' => t('Full node display'),
      '#default_value' => variable_get('fivestar_position_'. $form['#node_type']->type, 'below'),
      '#options' => array(
        'above' => t('Clickable widget above node body'),
        'below' => t('Clickable widget below node body'),
        'above_static' => t('Static display above node body'),
        'below_static' => t('Static display below node body'),
        'hidden' => '<'. t('hidden') .'>',
      ),
    );

    $form['fivestar']['direct']['fivestar_direct_preview'] = array(
      '#type' => 'item',
      '#title' => t('Direct rating widget preview'),
      '#value' => theme(
        'fivestar_preview',
        $form['fivestar']['direct']['fivestar_style']['#default_value'],
        $form['fivestar']['direct']['fivestar_text']['#default_value'],
        $form['fivestar']['fivestar_stars']['#default_value'],
        $form['fivestar']['direct']['fivestar_unvote']['#default_value'],
        $form['fivestar']['direct']['fivestar_title']['#default_value'] ? NULL : FALSE,
        $form['fivestar']['labels']['fivestar_labels_enable']['#default_value'],
        variable_get('fivestar_labels_'. $form['#node_type']->type, array())
      ),
    );
    if (!$form['fivestar']['fivestar']['#default_value']) {
      $form['fivestar']['direct']['fivestar_direct_preview']['#value'] = theme('fivestar_preview_wrapper', '');
    }
    else {
      $form['fivestar']['direct']['fivestar_direct_preview']['#value'] = theme('fivestar_preview_wrapper', $form['fivestar']['direct']['fivestar_direct_preview']['#value']);
    }

    $form['#submit'][] = 'fivestar_node_type_form_submit';
  }
}

/**
 * Additional submit handler for the node type form.
 */
function fivestar_node_type_form_submit($form, &$form_state) {
  // Do not save any fivestar variables if fivestar is disabled.
  if (isset($form_state['values']['fivestar']) && $form_state['values']['fivestar'] === 0) {
    foreach ($form_state['values'] as $key => $value) {
      if (strpos($key, 'fivestar') === 0) {
        variable_del($key .'_'. $form_state['values']['type']);
      }
    }
  }
  // Merge labels into a single variable.
  $labels = array();
  for ($n = 0; $n <= 10; $n++) {
    $labels[] = $form_state['values']['fivestar_label_'. $n];
    variable_del('fivestar_label_'. $n .'_'. $form_state['values']['type']);
  }
  variable_del('fivestar_labels_'. $form_state['values']['type']);
  if ($form_state['values']['fivestar_labels_enable']) {
    variable_set('fivestar_labels_'. $form_state['values']['type'], $labels);
  }
}

/**
 * Theme function to add the Fivestar preview to the node type form.
 */
function theme_fivestar_node_type_form($form) {
  drupal_add_js(drupal_get_path('module', 'fivestar') .'/js/fivestar-admin.js');
  drupal_add_js(array('fivestar' => array('preview_url' => url('fivestar/preview/node'))), 'setting');
  drupal_add_css(drupal_get_path('module', 'fivestar') .'/css/fivestar-admin.css', 'module', 'all', FALSE);

  $output = '';
  $output .= drupal_render($form['fivestar']);
  $output .= drupal_render($form['fivestar_stars']);

  // Star labels.
  $output .= drupal_render($form['labels']);

  // Direct rating settings form.
  $direct = '';
  $direct .= '<div id="fivestar-direct-form">';
  $direct .= drupal_render($form['direct']['fivestar_style']);
  $direct .= drupal_render($form['direct']['fivestar_text']);
  $direct .= drupal_render($form['direct']['fivestar_title']);
  $direct .= drupal_render($form['direct']['fivestar_unvote']);
  $direct .= drupal_render($form['direct']['fivestar_feedback']);
  $direct .= drupal_render($form['direct']['fivestar_position_teaser']);
  $direct .= drupal_render($form['direct']['fivestar_position']);
  $direct .= '</div>';
  $direct .= '<div id="fivestar-direct-preview">';
  $direct .= drupal_render($form['direct']['fivestar_direct_preview']);
  $direct .= '</div>';

  $form['direct']['#children'] = $direct;
  $output .= drupal_render($form['direct']);

  // Comment settings form.
  if (module_exists('fivestar_comment')) {
    $comment = '';
    $comment .= '<div id="fivestar-comment-form">';
    $comment .= drupal_render($form['comment']['fivestar_comment']);
    $comment .= '</div>';
    $comment .= '<div id="fivestar-comment-preview">';
    $comment .= drupal_render($form['comment']['fivestar_comment_preview']);
    $comment .= '</div>';

    $form['comment']['#children'] = $comment;
    $output .= drupal_render($form['comment']);
  }

  // Any remaining cruft (should be empty).
  $output .= drupal_render($form);
  return $output;
}

/**
 * Implementation of hook_node_types().
 */
function fivestar_node_type($op, $info) {
  $type = $info->type;
  $variables = array('fivestar', 'fivestar_unvote', 'fivestar_style', 'fivestar_stars', 'fivestar_comment', 'fivestar_position', 'fivestar_position_teaser');

  // Be responsible and cleanup unneeded variables.
  if ($op == 'delete') {
    foreach ($variables as $variable) {
      variable_del($variable .'_'. $type);
    }
  }
  // When changing the type name, update the variables.
  elseif ($op == 'update' && !empty($info->old_type) && $info->old_type != $info->type) {
    foreach ($variables as $variable) {
      $value = variable_get($variable .'_'. $type, -1);
      if ($value != -1) {
        variable_del($variable .'_'. $type);
        variable_set($variable .'_'. $type, $value);
      }
    }
  }
}

/**
 * Callback function for admin/settings/fivestar. Display the settings form.
 */
function fivestar_settings() {
  $form = array();

  $form['widget'] = array(
    '#tree' => FALSE,
    '#type' => 'fieldset',
    '#title' => t('Widget display'),
    '#description' => t('Choose a widget set to be used on your site. Widgets supporting custom colors can be further customized by adjusting the color scheme.'),
    '#weight' => -2,
  );

  $widgets = module_invoke_all('fivestar_widgets');
  $classic_widgets = array();
  $color_widgets = array();
  foreach ($widgets as $path => $name) {
    $directory = dirname($path);
    $matches = file_scan_directory($directory, '-template.');
    if (empty($matches)) {
      $classic_widgets[$path] = $name;
    }
    else {
      $color_widgets[$path] = $name;
    }
  }

  // If using a color widget, set the default value to the original path.
  $default_value = variable_get('fivestar_widget', 'default');
  foreach ($color_widgets as $path => $name) {
    if (basename($path) == basename($default_value)) {
      $default_value = $path;
    }
  }

  $form['widget']['fivestar_widget'] = array(
    '#type' => 'radios',
    '#options' => array('default' => t('Default')) + $classic_widgets + $color_widgets,
    '#default_value' => $default_value,
    '#attributes' => array('class' => 'fivestar-widgets'),
  );

  $form['widget']['fivestar_color_widget'] = array(
    '#type' => 'radios',
    '#title' => t('Custom color widgets'),
    '#options' => $color_widgets,
    '#attributes' => array('class' => 'fivestar-widgets'),
  );

  $form['color'] = fivestar_color_form();
  $form['#validate'][] = 'fivestar_color_form_validate';
  $form['#submit'][] = 'fivestar_color_form_submit';
  $form['#submit'][] ='fivestar_settings_submit';

  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Save configuration'),
    '#weight' => 45,
  );

  return $form;
}

function fivestar_settings_submit($form, &$form_state) {
  variable_set('fivestar_widget', $form_state['values']['fivestar_widget']);
}

function theme_fivestar_settings($form) {
  drupal_add_css(drupal_get_path('module', 'fivestar') .'/css/fivestar-admin.css', 'module', 'all', FALSE);
  drupal_set_title(t('Fivestar Settings'));

  // Default preview.
  $form['widget']['fivestar_widget']['default']['#description'] = 'Default '. t('Preview') .':<br />'. theme('fivestar_preview_widget', 'default');

  // Preview for each classic widget.
  foreach (element_children($form['widget']['fivestar_widget']) as $widget_key) {
    if ($widget_key != 'default') {
      $form['widget']['fivestar_widget'][$widget_key]['#description'] = $form['widget']['fivestar_widget'][$widget_key]['#title'] .' '. t('Preview') .':<br />'. theme('fivestar_preview_widget', $widget_key);
    }
  }

  // Preview for each color-enabled widget.
  foreach (element_children($form['widget']['fivestar_color_widget']) as $widget_key) {
    $form['widget']['fivestar_color_widget'][$widget_key] = $form['widget']['fivestar_widget'][$widget_key];
    $form['widget']['fivestar_color_widget'][$widget_key]['#description'] = $form['widget']['fivestar_color_widget'][$widget_key]['#title'] .' '. t('Preview') .':<br />'. theme('fivestar_preview_widget', $widget_key);
    unset($form['widget']['fivestar_widget'][$widget_key]);
  }

  // Add the new styles to the page.
  drupal_set_html_head("<style type=\"text/css\" media=\"all\">\n". fivestar_get_inline_css() ."</style>");

  $form['widget']['fivestar_widget']['#attributes']['class'] .= ' clear-block';
  $form['widget']['fivestar_color_widget']['#attributes']['class'] .= ' fivestar-color-widgets clear-block';

  return drupal_render($form);
}

function theme_fivestar_preview_widget($css_file) {
  static $default_css_added = FALSE;

  // Add the default CSS to the page to ensure the defaults take precedence.
  if (!$default_css_added) {
    $css = file_get_contents(drupal_get_path('module', 'fivestar') .'/css/fivestar.css');
    // Prepend the classes with the unique widget div.
    $css = preg_replace('/((div)?\.fivestar-widget)/', 'div.fivestar-widgets $1', $css);
    // Update relative URLs with absolute locations.
    $css = preg_replace('/url\(\.\.\/(.*?)\)/', 'url('. base_path() . drupal_get_path('module', 'fivestar') .'/$1)', $css);
    fivestar_add_inline_css('default', $css);
    $default_css_added = TRUE;
  }

  // Add widget specific CSS to the page.
  $widget_name = str_replace('.css', '', basename($css_file));
  $widget_path = dirname($css_file);
  if ($widget_name != 'default') {
    $css = file_get_contents($css_file);
    // Prepend the classes with the unique widget div.
    $css = preg_replace('/((div)?\.fivestar-widget)/', 'div#fivestar-preview-'. $widget_name .' $1', $css);
    // Update relative URLs with absolute locations.
    $css = preg_replace('/url\((.*?)\)/', 'url('. base_path() . $widget_path .'/$1)', $css);
    fivestar_add_inline_css($widget_name, $css);
  }

  $form = array();
  $form_state = array();
  $form['vote'] = array(
    '#type' => 'fivestar',
    '#stars' => 5,
    '#auto_submit' => FALSE,
    '#allow_clear' => TRUE,
  );

  $form = form_builder('fivestar_preview', $form, $form_state);

  $output = '<div class="fivestar-star-preview" id="fivestar-preview-'. $widget_name .'">';
  $output .= drupal_render($form);
  $output .= '</div>';

  return $output;
}

/**
 * Callback function for fivestar/preview/color.
 *
 * Outputs a dynamically generated star or cancel png.
 */
function fivestar_preview_color() {
  $args = func_get_args();
  // Remove query string if it gets passed in as argument.
  $filename = preg_replace('/\?.*$/', '', array_pop($args));
  $type = array_pop($args);
  $widget = array_pop($args);

  // Convert args to our color scheme.
  $color_scheme = array(
    'on1' => $args[0],
    'on2' => $args[1],
    'hover1' => $args[2],
    'hover2' => $args[3],
    'off1' => $args[4],
    'off2' => $args[5],
    'matte' => $args[6],
  );

  // Find the source location of the desired widget.
  $widgets = module_invoke_all('fivestar_widgets');
  foreach ($widgets as $key => $name) {
    if (drupal_strtolower($name) == $widget) {
      $source_directory = str_replace($widget .'.css', '', $key);
      break;
    }
  }

  // Generate the requested image and exit.
  $image = _fivestar_color_render($source_directory . str_replace('.png', '-template.png', $filename), $color_scheme, $type);
  drupal_set_header('Content-type: image/png');
  drupal_set_header("Expires: ". gmdate("D, d M Y H:i:s", time() + 300) ." GMT");
  drupal_set_header("Last-Modified: ". gmdate("D, d M Y H:i:s") ." GMT");
  drupal_set_header("Cache-Control: max-age=300");
  imagepng($image);
  exit();
}

/**
 * Callback function for fivestar/preview/node. Outputs a JSON page containing
 * a Fivestar preview of a node rating widget.
 */
function fivestar_preview() {
  // Perform a few basic security checks.
  $style = check_plain($_POST['style']);
  $text = check_plain($_POST['text']);
  $stars = (int)$_POST['stars'];
  $unvote = (boolean)$_POST['unvote'];
  $title = (boolean)$_POST['title'];
  $feedback_enable = (boolean)$_POST['feedback'];
  $labels_enable = (boolean)$_POST['labels_enable'];
  $labels = (array)$_POST['labels'];
  foreach ($labels as $key => $label) {
    $labels[$key] = filter_xss_admin($label);
  }

  $output = theme('fivestar_preview', $style, $text, $stars, $unvote, $title ? NULL : FALSE, $feedback_enable, $labels_enable, $labels);
  drupal_set_header('Content-Type: text/javascript; charset=utf-8');
  print drupal_to_js(array('status' => TRUE, 'data' => $output));
}

function theme_fivestar_preview($style = NULL, $text = NULL, $stars = NULL, $unvote = NULL, $title = NULL, $feedback_enable = TRUE, $labels_enable = TRUE, $labels = array()) {
  $values = array(
    'average' => 50,
    'user' => 80,
    'count' => 20,
  );
  $settings = array(
    'stars' => $stars,
    'allow_clear' => $unvote,
    'style' => $style,
    'text' => $text,
    'title' => $title,
    'autosubmit' => FALSE,
    'feedback_enable' => $feedback_enable,
    'labels_enable' => $labels_enable,
    'labels' => $labels,
  );

  $form = drupal_get_form('fivestar_custom_widget', $values, $settings);
  // This regex is sadly necessary because having duplicate form_tokens or
  // form_id elements can cause the content type form to choke. Forms inside of
  // forms is also frowned upon, so this removes the wrapping form tag as well.
  $form = str_replace(array('<form', '</form>'), array('<div', '</div>'), $form);
  $form = preg_replace('/( method=".*?")|( action=".*?")|(<input.*?name="(form_token|form_id|destination|form_build_id)".*?\/>)/', '', $form);
  return $form;
}

function theme_fivestar_preview_wrapper($content, $type = 'direct') {
  return '<div class="fivestar-preview fivestar-preview-'. $type .'">'. $content .'</div>';
}

/**
 * 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_set_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)) {
    $output .= '<xml><error>'. t('Invalid token') .'</error></xml>';
    exit($output);
  }

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

  if ($type == 'node') {
    $node = node_load($cid);
  }
  $stars = variable_get('fivestar_stars_'. (!isset($node) ? 'default' : $node->type), 5);
  $feedback_enable = variable_get('fivestar_feedback_'. (!isset($node) ? 'default' : $node->type), 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'];
      }
    }
  }
  $output .= '<summary>';
  $output .= '<average><![CDATA['. theme('fivestar_summary', NULL, $summary[$tag]['average'], NULL, $stars, $feedback_enable) .']]></average>';
  $output .= '<average_count><![CDATA['. theme('fivestar_summary', NULL, $summary[$tag]['average'], $summary[$tag]['count'], $stars, $feedback_enable) .']]></average_count>';
  $output .= '<user><![CDATA['. theme('fivestar_summary', $value, NULL, NULL, $stars, $feedback_enable) .']]></user>';
  $output .= '<user_count><![CDATA['. theme('fivestar_summary', $value, NULL, $summary[$tag]['count'], $stars, $feedback_enable) .']]></user_count>';
  $output .= '<combo><![CDATA['. theme('fivestar_summary', $value, $summary[$tag]['average'], $summary[$tag]['count'], $stars, $feedback_enable) .']]></combo>';
  $output .= '<count><![CDATA['. theme('fivestar_summary', NULL, NULL, $summary[$tag]['count'], $stars, $feedback_enable) .']]></count>';
  $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_set_header("Content-Type: text/xml");
  exit($output);
}

/**
 * Internal function to handle vote casting, flood control, XSS, IP based
 * voting, etc...
 */
function _fivestar_cast_vote($type, $cid, $value, $tag = NULL, $uid = NULL, $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, $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('content_type' => $type, 'content_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);
      return $user_votes[0];
    }
    else {
      $votes = $criteria += array('value' => $value);
      votingapi_set_votes($votes, $user_votes);
      return $votes[0];
    }
  }

  return array();
}

function fivestar_get_votes($type, $cid, $tag = 'vote', $uid = NULL) {
  global $user;

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

  $criteria = array(
    'content_type' => $type,
    'content_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 $uid
 *   The user trying to cast the vote.
 *
 * @return boolean
 */
function fivestar_validate_target($type, $id, $uid = NULL) {
  if (!isset($uid)) {
    $uid = $GLOBALS['user']->uid;
  }

  $access = module_invoke_all('fivestar_access', $type, $id, $uid);
  foreach ($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 $uid
 *   The user ID trying to cast the vote.
 *
 * @return boolean or NULL
 *   Returns TRUE if voting is supported on this object.
 *   Returns NULL if voting is not supported on this object by this module.
 *   If needing to absolutely deny all voting on this object, regardless
 *   of permissions defined in other modules, return FALSE. Note if all
 *   modules return NULL, stating no preference, then access will be denied.
 */
function fivestar_fivestar_access($type, $id, $uid) {
  if ($type == 'node' && $node = node_load($id)) {
    if (variable_get('fivestar_'. $node->type, 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->filename] = drupal_ucfirst(str_replace('-color', '', $file->name));
    }
  }
  return $widgets;
}

/**
 * Implementation of hook_nodeapi().
 *
 * Adds the fievestar widget to the node view.
 */
function fivestar_nodeapi(&$node, $op, $teaser, $page) {
  switch ($op) {
    case 'view':
      $exclude_modes = array(
        NODE_BUILD_PREVIEW,
        NODE_BUILD_SEARCH_INDEX,
        NODE_BUILD_SEARCH_RESULT,
        NODE_BUILD_RSS,
      );
      if (!in_array($node->build_mode, $exclude_modes) && !isset($node->modr8_form_teaser) && variable_get('fivestar_'. $node->type, 0)) {
        if ($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') && fivestar_validate_target('node', $node->nid)) {
              $node->content['fivestar_widget'] = array(
                '#value' => fivestar_widget_form($node),
                '#weight' => $position == 'above' ? -10 : 50,
              );
              break;
            } // Fall through to static if not allowed to rate.
            $position .= '_static';
          case 'above_static':
          case 'below_static':
            $stars = variable_get('fivestar_stars_'. $node->type, 5);
            $node->content['fivestar_widget'] = array(
              '#value' => fivestar_static('node', $node->nid, NULL, $node->type),
              '#weight' => strpos($position, 'above') === 0 ? -10 : 50,
            );
            break;
          default:
            // We'll do nothing.
            break;
        }
      }
      break;
  }
}


/**
 * Implementation of hook_link().
 *
 * Add a "rate" link to node teaser.
 */
function fivestar_link($type, $node = NULL, $teaser = FALSE) {
  $links = array();
  if ($type == "node" && $teaser) {
    if (variable_get('fivestar_position_teaser_'. $node->type, 'above') == "link") {
      $links['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_get_types('name', $node->type)))),
      );
    }
  }
  return $links;
}


function fivestar_block($op = 'list', $delta = 0, $edit = array()) {
  switch ($op) {
    case 'list':
      $blocks[0]['info'] = t('Fivestar: Rate this node');
      return $blocks;

    case 'view':
      if (user_access('access content') && user_access('rate content')) {
        if (arg(0) == 'node' && is_numeric(arg(1)) && (arg(2) == '' || arg(2) == 'view')) {
          $node = node_load(arg(1));
          if (fivestar_validate_target('node', $node->nid)) {
            $block['subject'] = t('Rate This');
            $block['content'] = fivestar_widget_form($node);
            return $block;
          }
        }
      }
      break;
  }
}

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

/**
 * 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]) {
      $forms[$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_state, $content_type, $content_id) {
  global $user;

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

  $star_display = variable_get('fivestar_style_'. $node->type, 'average');
  $text_display = variable_get('fivestar_text_'. $node->type, '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, 'vote', 0);
  }
  else {
    $votes = fivestar_get_votes($content_type, $content_id);
  }

  $values = array(
    'user' => isset($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_'. $node->type, 5),
    'allow_clear' => variable_get('fivestar_unvote_'. $node->type, FALSE),
    'style' => $star_display,
    'text' => $text_display,
    'content_type' => $content_type,
    'content_id' => $content_id,
    'tag' => 'vote',
    'autosubmit' => TRUE,
    'title' => variable_get('fivestar_title_'. $node->type, 1) ? NULL : FALSE,
    'feedback_enable' => variable_get('fivestar_feedback_'. $node->type, 1),
    'labels_enable' => variable_get('fivestar_labels_enable_'. $node->type, 1),
    'labels' => variable_get('fivestar_labels_'. $node->type, array()),
  );

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

function fivestar_static($content_type, $content_id, $tag = 'vote', $node_type = NULL) {
  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;
    }

    $star_display = variable_get('fivestar_style_'. $node_type, 'average');
    $text_display = variable_get('fivestar_text_'. $node_type, 'dual');
    $title_display = variable_get('fivestar_title_'. $node_type, 1);

    $stars = variable_get('fivestar_stars_'. $node_type, 5);
    switch ($star_display) {
      case 'average':
      case 'dual':
        $star_value = $votes['average']['value'];
        $title = $title_display ? t('Average') : NULL;
        break;
      case 'user':
        $star_value = $votes['user']['value'];
        $title = $title_display ? t('Your rating') : NULL;
        break;
      case 'smart':
        $star_value = $votes['user']['value'] ? $votes['user']['value'] : $votes['average']['value'];
        $title = $title_display ? $votes['user']['value'] ? t('Your rating') : t('Average') : NULL;
        break;
    }

    // Set all text values, then unset the unnecessary ones.
    $user_value = $votes['user']['value'];
    $average_value = $votes['average']['value'];
    $count_value = $votes['count']['value'];
    switch ($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', $star_value, $stars);
  $text_display = $text_display == 'none' ? NULL : theme('fivestar_summary', $user_value, $average_value, $count_value, $stars, FALSE);

  return theme('fivestar_static_element', $star_display, $title, $text_display);
}

function fivestar_custom_widget(&$form_state, $values, $settings) {
  $form = array(
    '#attributes' => array('class' => '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'],
    );
  }

  $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' => 'fivestar-submit'),
  );

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

  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'] .'_'. $form_state['values']['content_id']) {
    // Cast the vote.
    _fivestar_cast_vote($form_state['values']['content_type'], $form_state['values']['content_id'], $form_state['values']['vote']);
    votingapi_recalculate_results($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_elements() {
  $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($element) {
  if (empty($element['#description'])) {
    if ($element['#feedback_enable']) {
      $element['#description'] = '<div class="fivestar-summary fivestar-feedback-enabled"> </div>';
    }
    elseif ($element['#labels_enable']) {
      $element['#description'] = '<div class="fivestar-summary"> </div>';
    }
  }

  return theme('form_element', $element, $element['#children']);
}

/**
 * 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($element) {
  $select = '';
  $size = $element['#size'] ? ' size="'. $element['#size'] .'"' : '';
  _form_set_class($element, array('form-select'));
  $multiple = isset($element['#multiple']) && $element['#multiple'];
  return '<select name="'. $element['#name'] .''. ($multiple ? '[]' : '') .'"'. ($multiple ? ' multiple="multiple" ' : '') . drupal_attributes($element['#attributes']) .' id="'. $element['#id'] .'" '. $size .'>'. form_select_options($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($form) {
  // Only print out the summary if text is being displayed or using rollover text.
  if (empty($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">';
  $output .= drupal_render($form);
  $output .= '</div>';
  return $output;
}

/**
 * Display a plain HTML VIEW ONLY version of the widget
 * with the 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 $tag
 *   Allows multiple ratings per node
 * @return
 *   A themed HTML string representing the star widget
 *
 */
function theme_fivestar_static($rating, $stars = 5, $tag = 'vote') {
  $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;
}

function theme_fivestar_summary($user_rating, $average_rating, $votes, $stars = 5, $feedback = TRUE) {
  $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 ? ' fivestar-feedback-enabled' : '') .'">'. $output .'</div>';
  return $output;
}

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

  $output .= theme('form_element', $element, $value);
  $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/settings/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;
  }

  // Set a class for the display of label text on hover.
  $label_class = $element['#labels_enable'] ? ' fivestar-labels-hover' : '';

  $element['#prefix'] = '<div class="fivestar-form-item '. (isset($element['#attributes']['class']) ? $element['#attributes']['class'] : '') . $label_class .'">';
  $element['#suffix'] = '</div>';

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

  return $element;
}

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, $columns) {
  // Determine number of stars to display
  if ($field->view->base_table == 'node') {
    if (isset($columns->node_type)) {
      $stars = variable_get('fivestar_stars_'. $columns->node_type, 5);
    }
    else {
      $node_type = db_result(db_query("SELECT type FROM {node} WHERE nid = %d", $columns->nid));
      $stars = variable_get('fivestar_stars_'. (!isset($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', $value, $stars, $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_result(db_query("SELECT type FROM {node} WHERE nid = %d", $columns->nid));
  $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) {

  // 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_result(db_query("SELECT type FROM {node} WHERE nid = %d", $columns->nid));

    $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', $value, 5);
  }
}


/**
 * Implementation of hook_votingapi_metadata_alter().
 */
function fivestar_votingapi_metadata_alter(&$data) {
  static $tags;  
  if (!isset($tags)) {
    $tags = array();
    
    module_load_install('content');
    module_load_include('inc', 'content', 'includes/content.admin');
    module_load_include('inc', 'content', 'includes/content.crud');

    // 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;
}

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