colorbox.module 21 KB
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<?php
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/**
 * @file
 * A light-weight, customizable lightbox plugin for jQuery 1.3
 */
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/**
 * The default path to the Colorbox directory.
 */
define('COLORBOX_PATH', 'sites/all/libraries/colorbox');
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define('COLORBOX_MIN_PLUGIN_VERSION', '1.3.18');
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/**
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 * Implements hook_theme().
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 */
function colorbox_theme() {
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  return array(
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    'colorbox_imagefield' => array(
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      'variables' => array(
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        'image' => array(),
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        'path' => NULL,
        'title' => NULL,
        'gid' => NULL,
      ),
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      'file' => 'colorbox.theme.inc',
    ),

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    'colorbox_insert_image' => array(
      'variables' => array(
        'item' => NULL,
        'widget' => NULL,
      ),
      'template' => 'colorbox-insert-image',
      'file' => 'colorbox.theme.inc',
    ),

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    'colorbox_image_formatter' => array(
      'variables' => array(
        'item' => NULL,
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        'entity_type' => NULL,
        'entity' => NULL,
        'node' => NULL,  // Left for legacy support.
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        'field' => array(),
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        'display_settings' => array(),
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      ),
      'file' => 'colorbox.theme.inc',
    ),
  );
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}

/**
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 * Implements hook_init().
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 */
function colorbox_init() {
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  // Do not load colorbox during the Drupal installation process, e.g. if part
  // of installation profiles.
  if (!drupal_installation_attempted()) {
    _colorbox_doheader();
  }
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}

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/**
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 * Implements hook_views_api().
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 */
function colorbox_views_api() {
  return array(
    'api' => 2,
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    'path' => drupal_get_path('module', 'colorbox') . '/views',
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  );
}

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/**
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 * Implements hook_menu().
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 */
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function colorbox_menu() {
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  $items = array();

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  $items['admin/config/media/colorbox'] = array(
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    'title' => 'Colorbox',
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    'description' => 'Adjust Colorbox settings.',
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    'file' => 'colorbox.admin.inc',
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    'page callback' => 'drupal_get_form',
    'page arguments' => array('colorbox_admin_settings'),
    'access arguments' => array('administer site configuration'),
  );
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  $items['user/login/colorbox'] = array(
    'title' => 'Login',
    'page callback' => 'colorbox_login',
    'access callback' => 'user_is_anonymous',
    'type' => MENU_CALLBACK,
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    'file' => 'colorbox.pages.inc',
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  );
  $items['colorbox/form'] = array(
    'title' => 'Form',
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    'page callback' => 'colorbox_form_page',
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    'page arguments' => array(2),
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    'access callback' => '_colorbox_form_page_access',
    'access arguments' => array(2),
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    'type' => MENU_CALLBACK,
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    'file' => 'colorbox.pages.inc',
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  );

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  return $items;
}

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/**
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 * Colorbox menu access check.
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 */
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function _colorbox_form_page_access($form_id) {
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  $access = FALSE;

  // First check if this is one of the forms Colorbox support out of the box.
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  switch ($form_id) {
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    case 'contact_site_form':
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      $access = user_access('access site-wide contact form');
      break;
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    case 'user_register_form':
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      $access = user_register_access();
      break;
    case 'user_pass':
    case 'user_login':
    case 'user_login_block':
      $access = user_is_anonymous();
      break;
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  }

  // Invoke hook_colorbox_form_access for all modules.
  if (!$access) {
    foreach (module_implements('colorbox_form_access') as $module) {
      if ($access = module_invoke($module, 'colorbox_form_access', $form_id)) {
        return $access;
      }
    }
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  }
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  return $access;
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}

/**
 * Check if Colorbox should be active for the current URL.
 *
 * @return
 *   TRUE if Colorbox should be active for the current page.
 */
function _colorbox_active() {
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  // Make it possible deactivate Colorbox with
  // parameter ?colorbox=no in the url.
  if (isset($_GET['colorbox']) && $_GET['colorbox'] == 'no') {
    return FALSE;
  }

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  // Code from the block_list funtion in block.module.
  $path = drupal_get_path_alias($_GET['q']);
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  $colorbox_pages = variable_get('colorbox_pages', "admin*\nimagebrowser*\nimg_assist*\nimce*\nnode/add/*\nnode/*/edit\nprint/*\nprintpdf/*\nsystem/ajax\nsystem/ajax/*");
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  // Compare with the internal and path alias (if any).
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  $page_match = drupal_match_path($path, $colorbox_pages);
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  if ($path != $_GET['q']) {
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    $page_match = $page_match || drupal_match_path($_GET['q'], $colorbox_pages);
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  }
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  $page_match = variable_get('colorbox_visibility', 0) == 0 ? !$page_match : $page_match;
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  return $page_match;
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}

/**
 * Loads the various js and css files.
 */
function _colorbox_doheader() {
  static $already_added = FALSE;
  if ($already_added) {
    return; // Don't add the JavaScript and CSS multiple times.
  }
  if (!_colorbox_active()) {
    return; // Don't add the JavaScript and CSS on specified paths.
  }

  // Insert options and translated strings as javascript settings.
  if (variable_get('colorbox_custom_settings_activate', 0)) {
    $js_settings = array(
      'transition' => variable_get('colorbox_transition_type', 'elastic'),
      'speed' => variable_get('colorbox_transition_speed', 350),
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      'opacity' => variable_get('colorbox_opacity', '0.85'),
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      'slideshow' => variable_get('colorbox_slideshow', 0) ? TRUE : FALSE,
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      'slideshowAuto' => variable_get('colorbox_slideshowauto', 1) ? TRUE : FALSE,
      'slideshowSpeed' => variable_get('colorbox_slideshowspeed', 2500),
      'slideshowStart' => variable_get('colorbox_text_start', 'start slideshow'),
      'slideshowStop' => variable_get('colorbox_text_stop', 'stop slideshow'),
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      'current' => variable_get('colorbox_text_current', '{current} of {total}'),
      'previous' => variable_get('colorbox_text_previous', '« Prev'),
      'next' => variable_get('colorbox_text_next', 'Next »'),
      'close' => variable_get('colorbox_text_close', 'Close'),
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      'overlayClose' => variable_get('colorbox_overlayclose', 1) ? TRUE : FALSE,
      'maxWidth' => variable_get('colorbox_maxwidth', '100%'),
      'maxHeight' => variable_get('colorbox_maxheight', '100%'),
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      'initialWidth' => variable_get('colorbox_initialwidth', '300'),
      'initialHeight' => variable_get('colorbox_initialheight', '100'),
      'fixed' => variable_get('colorbox_fixed', 1) ? TRUE : FALSE,
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      'scrolling' => variable_get('colorbox_scrolling', 1) ? TRUE : FALSE,
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    );
  }
  else {
    $js_settings = array(
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      'opacity' => '0.85',
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      'current' => t('{current} of {total}'),
      'previous' => t('« Prev'),
      'next' => t('Next »'),
      'close' => t('Close'),
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      'maxWidth' => '100%',
      'maxHeight' => '100%',
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      'fixed' => TRUE,
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    );
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  }
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  $path = drupal_get_path('module', 'colorbox');
  $style = variable_get('colorbox_style', 'default');

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  // Give other modules the possibility to override Colorbox settings and style.
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  $data = &$js_settings;
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  drupal_alter('colorbox_settings', $data, $style);
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  drupal_add_js(array('colorbox' => $js_settings), array('type' => 'setting', 'scope' => JS_DEFAULT));
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  // Add and initialise the Colorbox plugin.
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  drupal_add_js(colorbox_get_js());
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  drupal_add_js($path . '/js/colorbox.js');
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  // Add JS and CSS based on selected style.
  switch ($style) {
    case 'none':
      break;
    case 'default':
      drupal_add_css($path . '/styles/default/colorbox_default_style.css');
      drupal_add_js($path . '/styles/default/colorbox_default_style.js');
      break;
    case 'stockholmsyndrome':
      drupal_add_css($path . '/styles/stockholmsyndrome/colorbox_stockholmsyndrome.css');
      drupal_add_js($path . '/styles/stockholmsyndrome/colorbox_stockholmsyndrome.js');
      break;
    default:
      drupal_add_css($style . '/colorbox.css');
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  }

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  if (variable_get('colorbox_load', 0)) {
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    drupal_add_js($path . '/js/colorbox_load.js');
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  }

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  if (variable_get('colorbox_inline', 0)) {
    drupal_add_js($path . '/js/colorbox_inline.js');
  }

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  if ($GLOBALS['user']->uid == 0 && variable_get('colorbox_login', 0)) {
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    drupal_add_js($path . '/js/colorbox_login.js');
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  }

  $already_added = TRUE;
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}

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/**
 * Return the version of Colorbox plugin that is installed.
 *
 * This can be used by other modules' hook_requirements() to ensure that the
 * proper version of Colorbox plugin is installed.
 *
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 * @see version_compare()
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 */
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function colorbox_get_version($colorbox_js = NULL) {
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  $version = 0;
  $pattern = '#ColorBox v([0-9\.a-z]+)#';

  // No file is passed in so use the default location.
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  if (is_null($colorbox_js)) {
    $colorbox_js = colorbox_get_js();
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  }

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  // Return the version of Colorbox plugin, it it exists.
  if (file_exists($colorbox_js)) {
    $colorbox_plugin = file_get_contents($colorbox_js, NULL, NULL, 0, 32);
    if (preg_match($pattern, $colorbox_plugin, $matches)) {
      $version = $matches[1];
    }
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  }

  return $version;
}

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/**
 * Return the JS filename for Colorbox plugin.
 *
 * @return
 *   Boolean indicating if the JS is located.
 */
function colorbox_get_js() {
  $library_path = colorbox_get_path();

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  // Support for older version of the Colorbox plugin, pre 1.3.21.1.
  if (is_dir($library_path . '/colorbox')) {
    $library_path = $library_path . '/colorbox';
  }

  if (file_exists($library_path . '/jquery.colorbox.js') && file_exists($library_path . '/jquery.colorbox-min.js')) {
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    $colorbox_js_map = array('none' => 'jquery.colorbox.js', 'min' => 'jquery.colorbox-min.js');
    $colorbox_js = $colorbox_js_map[variable_get('colorbox_compression_type', 'min')];
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    return $library_path . '/' . $colorbox_js;
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  }
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//   else {
//     drupal_set_message(t('You need to download the !colorbox and extract the entire contents of the archive into the %path folder of your server.', array('!colorbox' => l(t('Colorbox plugin'), 'http://colorpowered.com/colorbox/'), '%path' => $library_path)), 'error', FALSE);
//     return FALSE;
//   }
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}

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/**
 * Return the path to the Colorbox plugin.
 */
function colorbox_get_path() {
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  static $library_path = NULL;

  // Try to locate the library path in any possible setup.
  if ($library_path == NULL) {
    // First check the default location.
    $path = variable_get('colorbox_path', COLORBOX_PATH);
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    if (is_dir($path . '/colorbox')) {
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      $library_path = $path;
    }
    // Ask the libraries module as a fallback.
    elseif ($library_path == NULL && module_exists('libraries')) {
      if ($path = libraries_get_path('colorbox')) {
        $library_path = $path;
        variable_set('colorbox_path', $library_path);
      }
    }
    // HACK: If libraries api module is not installed but available, load it.
    elseif ($library_path == NULL && file_exists(dirname(__FILE__) . '/../libraries/libraries.module')) {
      require_once(dirname(__FILE__) . '/../libraries/libraries.module');
      if ($path = libraries_get_path('colorbox')) {
        $library_path = $path;
        variable_set('colorbox_path', $library_path);
      }
    }
    // If no path is found suggest the default one.
    elseif ($library_path == NULL) {
      $library_path = COLORBOX_PATH;
    }
  }

  return $library_path;
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}

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/**
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 * Implements hook_form_alter().
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 * Reformat the login form.
 */
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function colorbox_form_alter(&$form, &$form_state, $form_id) {
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  switch ($form_id) {
    case 'user_login':
      if (arg(0) == 'user' && arg(1) == 'login' && arg(2) == 'colorbox') {
        $form['name']['#size'] = 25;
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        $form['name']['#id'] = 'cbox-edit-name';
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        $form['pass']['#size'] = 25;
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        $form['pass']['#id'] = 'cbox-edit-pass';
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        // Add links as needed.
        if (variable_get('colorbox_login_links', 0)) {
          $items = array();
          // Add standard links.
          if (variable_get('colorbox_login_links', 0) == 1) {
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            if (variable_get('user_register', USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL)) {
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              $items[] = l(t('Create new account'), 'user/register', array('attributes' => array('title' => t('Create a new user account.'))));
            }
            $items[] = l(t('Request new password'), 'user/password', array('attributes' => array('title' => t('Request new password via e-mail.'))));
          }
          // Add links that opens in a Colorbox.
          if (variable_get('colorbox_login_links', 0) == 2) {
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            if (variable_get('user_register', USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL)) {
              $items[] = l(t('Create new account'), 'colorbox/form/user_register_form', array('query' => array('width' => '300', 'height' => 'auto'), 'attributes' => array('title' => t('Create a new user account.'), 'class' => 'colorbox-load')));
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            }
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            $items[] = l(t('Request new password'), 'colorbox/form/user_pass', array('query' => array('width' => '300', 'height' => '150'), 'attributes' => array('title' => t('Request new password via e-mail.'), 'class' => 'colorbox-load')));
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          }
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          $form['links'] = array('#markup' => theme('item_list', array('items' => $items)));
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        }
      }
      break;
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    case 'user_register_form':
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      if (arg(0) == 'colorbox' && arg(1) == 'form') {
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        $form['account']['name']['#size'] = 30;
        $form['account']['mail']['#size'] = 30;
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      }
      break;
    case 'user_pass':
      if (arg(0) == 'colorbox' && arg(1) == 'form') {
        $form['name']['#size'] = 30;
      }
      break;
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  }
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}

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/**
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 * Implements hook_field_formatter_info().
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 */
function colorbox_field_formatter_info() {
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  return array(
    'colorbox' => array(
      'label' => t('Colorbox'),
      'field types' => array('image'),
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      'settings' => array(
        'colorbox_node_style' => '',
        'colorbox_image_style' => '',
        'colorbox_gallery' => 'post',
        'colorbox_gallery_custom' => '',
        'colorbox_caption' => 'auto',
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        'colorbox_caption_custom' => '',
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      ),
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    ),
  );
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}
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/**
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 * Implements hook_field_formatter_settings_form().
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 */
function colorbox_field_formatter_settings_form($field, $instance, $view_mode, $form, &$form_state) {
  $display = $instance['display'][$view_mode];
  $settings = $display['settings'];

  $image_styles = image_style_options(FALSE);
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  $image_styles_hide = $image_styles;
  $image_styles_hide['hide'] = t('Hide (do not display image)');
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  $element['colorbox_node_style'] = array(
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    '#title' => t('Content image style'),
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    '#type' => 'select',
    '#default_value' => $settings['colorbox_node_style'],
    '#empty_option' => t('None (original image)'),
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    '#options' => $image_styles_hide,
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    '#description' => t('Image style to use in the content.'),
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  );
  $element['colorbox_image_style'] = array(
    '#title' => t('Colorbox image style'),
    '#type' => 'select',
    '#default_value' => $settings['colorbox_image_style'],
    '#empty_option' => t('None (original image)'),
    '#options' => $image_styles,
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    '#description' => t('Image style to use in the Colorbox.'),
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  );

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  $gallery = array(
    'post' => t('Per post gallery'),
    'page' => t('Per page gallery'),
    'field_post' => t('Per field in post gallery'),
    'field_page' => t('Per field in page gallery'),
    'custom' => t('Custom'),
    'none' => t('No gallery'),
  );
  $element['colorbox_gallery'] = array(
    '#title' => t('Gallery (image grouping)'),
    '#type' => 'select',
    '#default_value' => $settings['colorbox_gallery'],
    '#options' => $gallery,
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    '#description' => t('How Colorbox should group the image galleries.'),
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  );
  $element['colorbox_gallery_custom'] = array(
    '#title' => t('Custom gallery'),
    '#type' => 'machine_name',
    '#maxlength' => 32,
    '#default_value' => $settings['colorbox_gallery_custom'],
    '#description' => t('All images on a page with the same gallery value (rel attribute) will be grouped together. It must only contain lowercase letters, numbers, and underscores.'),
    '#required' => FALSE,
    '#machine_name' => array(
      'exists' => 'colorbox_gallery_exists',
      'error' => t('The custom gallery field must only contain lowercase letters, numbers, and underscores.'),
    ),
    '#states' => array(
      'visible' => array(
        ':input[name$="[settings_edit_form][settings][colorbox_gallery]"]' => array('value' => 'custom'),
      ),
    ),
  );

  $caption = array(
    'auto' =>  t('Automatic'),
    'title' => t('Title text'),
    'alt' => t('Alt text'),
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    'node_title' => t('Content title'),
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    'custom' => t('Custom (with tokens)'),
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    'none' => t('None'),
  );
  $element['colorbox_caption'] = array(
    '#title' => t('Caption'),
    '#type' => 'select',
    '#default_value' => $settings['colorbox_caption'],
    '#options' => $caption,
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    '#description' => t('Automatic will use the first none empty value of the title, the alt text and the content title.'),
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  );
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  $element['colorbox_caption_custom'] = array(
    '#title' => t('Custom caption'),
    '#type' => 'textfield',
    '#default_value' => $settings['colorbox_caption_custom'],
    '#states' => array(
      'visible' => array(
        ':input[name$="[settings_edit_form][settings][colorbox_caption]"]' => array('value' => 'custom'),
      ),
    ),
  );
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  // Allow users to hide or set a custom recursion limit.
  // The module token_tweaks sets a global recursion limit that can not be bypassed.
  if (module_exists('token') && $recursion_limit = min(variable_get('token_tree_recursion_limit', 3), variable_get('colorbox_token_recursion_limit', 3))) {
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    $element['colorbox_token'] = array(
      '#type' => 'fieldset',
      '#title' => t('Replacement patterns'),
      '#theme' => 'token_tree',
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      '#token_types' => array($instance['entity_type'], 'file'),
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      '#recursion_limit' => $recursion_limit,
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      '#dialog' => TRUE,
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      '#states' => array(
        'visible' => array(
          ':input[name$="[settings_edit_form][settings][colorbox_caption]"]' => array('value' => 'custom'),
        ),
      ),
    );
  }
  else {
    $element['colorbox_token'] = array(
      '#type' => 'fieldset',
      '#title' => t('Replacement patterns'),
      '#description' => '<strong class="error">' . t('For token support the <a href="@token_url">token module</a> must be installed.', array('@token_url' => 'http://drupal.org/project/token')) . '</strong>',
      '#states' => array(
        'visible' => array(
          ':input[name$="[settings_edit_form][settings][colorbox_caption]"]' => array('value' => 'custom'),
        ),
      ),
    );
  }
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  return $element;
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}
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/**
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 * Implements hook_field_formatter_settings_summary().
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 */
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function colorbox_field_formatter_settings_summary($field, $instance, $view_mode) {
  $display = $instance['display'][$view_mode];
  $settings = $display['settings'];

  $summary = array();

  $image_styles = image_style_options(FALSE);
  // Unset possible 'No defined styles' option.
  unset($image_styles['']);
  // Styles could be lost because of enabled/disabled modules that defines
  // their styles in code.
  if (isset($image_styles[$settings['colorbox_node_style']])) {
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    $summary[] = t('Content image style: @style', array('@style' => $image_styles[$settings['colorbox_node_style']]));
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  }
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  elseif ($settings['colorbox_node_style'] == 'hide') {
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    $summary[] = t('Content image style: Hide');
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  }
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  else {
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    $summary[] = t('Content image style: Original image');
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  }
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  if (isset($image_styles[$settings['colorbox_image_style']])) {
    $summary[] = t('Colorbox image style: @style', array('@style' => $image_styles[$settings['colorbox_image_style']]));
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  }
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  else {
    $summary[] = t('Colorbox image style: Original image');
  }

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  $gallery = array(
    'post' => t('Per post gallery'),
    'page' => t('Per page gallery'),
    'field_post' => t('Per field in post gallery'),
    'field_page' => t('Per field in page gallery'),
    'custom' => t('Custom'),
    'none' => t('No gallery'),
  );
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  if (isset($settings['colorbox_gallery'])) {
    $summary[] = t('Colorbox gallery type: @type', array('@type' => $gallery[$settings['colorbox_gallery']])) . ($settings['colorbox_gallery'] == 'custom' ? ' (' . $settings['colorbox_gallery_custom'] . ')' : '');
  }
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  $caption = array(
    'auto' =>  t('Automatic'),
    'title' => t('Title text'),
    'alt' => t('Alt text'),
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    'node_title' => t('Content title'),
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    'custom' => t('Custom (with tokens)'),
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    'none' => t('None'),
  );
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  if (isset($settings['colorbox_caption'])) {
    $summary[] = t('Colorbox caption: @type', array('@type' => $caption[$settings['colorbox_caption']]));
  }
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  return implode('<br />', $summary);
}

/**
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 * Implements hook_field_formatter_view().
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 */
function colorbox_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
  $element = array();
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  foreach ($items as $delta => $item) {
    $element[$delta] = array(
      '#theme' => 'colorbox_image_formatter',
      '#item' => $item,
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      '#entity_type' => $entity_type,
      '#entity' => $entity,
      '#node' => $entity, // Left for legacy support.
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      '#field' => $field,
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      '#display_settings' => $display['settings'],
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    );
  }

  return $element;
}

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/**
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 * Implements hook_insert_styles().
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 */
function colorbox_insert_styles() {
  $insert_styles = array();
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  foreach (image_styles() as $key => $style) {
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    $insert_styles['colorbox__' . $key] = array('label' => t('Colorbox @style', array('@style' => $style['name'])));
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  }
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  return $insert_styles;
}

/**
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 * Implements hook_insert_content().
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 */
function colorbox_insert_content($item, $style, $widget) {
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  list($item['module_name'], $item['style_name']) = explode('__', $style['name'], 2);
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  return theme('colorbox_insert_image', array('item' => $item, 'widget' => $widget));
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}
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/**
 * Machine names normally need to be unique but that does not apply to galleries.
 *
 * @return
 *   Always FALSE
 */
function colorbox_gallery_exists() {
  return FALSE;
}