sharethis.module

<?php
/**
 * @file
 * A module that adds one of the ShareThis widget to your website.
 */

/**
 * Implements hook_help().
 *
 * Displays help and module information.
 *
 * @param path
 *   Which path of the site we're using to display help
 * @param arg
 *   Array that holds the current path as returned from arg() function
 */
function sharethis_help($path, $arg) {
  global $base_url;
  switch ($path) {
    case 'admin/config/services/sharethis':
      return '<p>' . t('Choose the widget, button family, and services for using <a href="@sharethis">ShareThis</a> to share content online.', array('@sharethis' => 'http://sharethis.com')) . '</p>';
      break;
    case "admin/help#sharethis":
      $return_value = "<p>" . t("This plugin places the ShareThis widget on each node.") . '</p>';
      $return_value .= "<ul><li>" . t("The Block pulls the URL from the current page and current Drupal title, the node version pulls it from the node title and url.") . '</li>';
      $return_value .= "<li>" . t("The block can be placed anywhere on a page, the node is limited to where nodes normally go") . '</li>';
      $return_value .= "<li>" . t("The block module is more likely to be compatible with other plugins that use blocks rather than nodes. (Panels works nicely with the block)") . '</li></ul>';
      $return_value .= "<p>" . t('For various configuration options please got to <a href="@sharethis">the settings page</a>.', array('@sharethis' => url('admin/config/services/sharethis'))) . '</p>';
      $return_value .= '<p>' . t('For more information, please visit <a href="@help">help.sharethis.com</a>.', array('@help' => 'http://help.sharethis.com/integration/drupal')) . '</p>';
      return $return_value;
      break;
  }
}

/**
 * Implements hook_permission().
 */
function sharethis_permission() {
  return array(
    'administer sharethis' => array(
      'title' => t('Administer ShareThis'),
      'description' => t('Change the settings for how ShareThis behaves on the site.'),
    ),
  );
}

 /**
 * This is the main configuration form for the admin page.
 */
function sharethis_configuration_form($form, &$form_state) {
  // First, setup variables we will need.
  // Get the path variables setup.
  $my_path = drupal_get_path('module', 'sharethis');
  // Load the css and js for our module's configuration.
  drupal_add_css($my_path . '/ShareThisForm.css');
  drupal_add_js('https://ws.sharethis.com/share5x/js/stcommon.js', 'external');  //This is ShareThis's common library - has a serviceList of all the objects that are currently supported.
  drupal_add_js($my_path . '/ShareThisForm.js');
  drupal_add_js($my_path . '/stlib_picker.js');
  drupal_add_css($my_path . '/stlib_picker.css');
  $current_options_array = sharethis_get_options_array();
  global $base_url;

  // Create the variables related to widget choice.
  $widget_type = $current_options_array['widget'];
  $widget_markup = "";
  if ($widget_type == "st_multi") {
    $widget_markup = "st_multi";
  }
  // Create the variables related to button choice.
  $button_choice = check_plain($current_options_array['buttons']);
  // Create the variables related to services chosen.
  $service_string = $current_options_array['services'];
  $service_string_markup = "";
  foreach (explode(",", $service_string) as $name => $string) {
    $key = explode(":", drupal_substr($string, 0, -1));
    $key = $key[1];
    $service_string_markup .= "\"" . $key . "\",";
  }
  $service_string_markup = drupal_substr($service_string_markup, 0, -1);

  // Create an array of node types.
  $node_type_array = node_type_get_types();
  $node_type_options = array();
  foreach ($node_type_array as $k => $v) {
    $node_type_options[$k] = $v->name;
  }
  // Figure out which nodeTypes are currently selected
  $nodes_string = $current_options_array['nodeType'];
  $nodes_selected = explode(",", $nodes_string);
  // Create the variables for publisher keys.
  $publisher = $current_options_array['publisherID'];
  // Create the variables for teasers.
  $teaser = $current_options_array['viewMode'] == "1" ? TRUE : FALSE;

  $form = array();
  $form['options'] = array(
    '#type' => 'fieldset',
    '#title' => t('Display'),
  );
  $form['options']['sharethis_widget_option'] = array(
    '#options' => array(
      'st_multi' => t("Multi-Post Widget"),
      'st_direct' => t("Direct-Post Widget")
    ),
    '#default_value' => $widget_type,
    '#type' => 'radios',
    '#required' => TRUE,
    '#title' => t("Choose a widget type:"),
    '#prefix' => '<div class="st_widgetContain"><div class="st_widgetPic ' . $widget_markup . '"><div class="st_widgetPicContain"><img src="' . $base_url . '/' . $my_path . '/img/widget.png"></img></div></div>',
    '#suffix' => '</div>'
  );
  $form['options']['sharethis_button_option'] = array(
    '#required' => TRUE,
    '#type' => 'radios',
    '#options' => array(
      'stbc_large' => t('Large Chicklets'),
      'stbc_' => t('Small Chicklets'),
      'stbc_button' => t('Classic Buttons'),
      'stbc_vcount' => t('Vertical Counters'),
      'stbc_hcount' => t('Horizontal Counters'),
      'stbc_custom' => t('Custom Buttons via CSS'),
    ),
    '#default_value' => $button_choice,
    '#title' => t("Choose a button style:"),
    '#prefix' => '<div class="st_widgetContain"><div class="st_spriteCover"><img id="stb_sprite" class="st_buttonSelectSprite ' . $button_choice . '" src="' . $base_url . '/' . $my_path . '/img/preview_sprite.png"></img></div><div class="st_widgetPic"><img class="st_buttonSelectImage" src="' . $base_url . '/' . $my_path . '/img/preview_bg.png"></img></div>',
    '#suffix' => '</div>'
  );
  $form['options']['sharethis_service_option'] = array(
    '#description' => t("<b>Add</b> a service by selecting it on the right and clicking the <i>left arrow</i>.  <b>Remove</b> it by clicking the <i>right arrow</i>.<br /><b>Change the order</b> of services under \"Selected Services\" by using the <i>up</i> and <i>down</i> arrows."),
    '#required' => TRUE,
    '#type' => 'textfield',
    '#prefix' => '<div>',
    '#suffix' => '</div><div id="myPicker"></div><script type="text/javascript">stlib_picker.setupPicker(jQuery("#myPicker"), [' . $service_string_markup . '], drupal_st.serviceCallback);</script>',
    '#title' => t("Choose Your Services."),
    '#default_value' => t($service_string),
    '#maxlength' => 1024,
  );
  $form['options']['sharethis_option_extras'] = array(
    '#title' => t('Extra services'),
    '#description' => t('Select additional services which will be available. These are not officially supported by ShareThis, but are available.'),
    '#type' => 'checkboxes',
    '#options' => array(
      'Google Plus One:plusone' => t('Google Plus One'),
      'Facebook Like:fblike' => t('Facebook Like'),
    ),
    '#default_value' => variable_get('sharethis_option_extras', array()),
  );
  $form['additional_settings'] = array(
    '#type' => 'vertical_tabs',
  );
  $form['context'] = array(
    '#type' => 'fieldset',
    '#title' => t('Context'),
    '#group' => 'additional_settings',
    '#description' => t('Configure where the ShareThis widget should appear.'),
  );
  $form['context']['sharethis_node_option'] = array(
    '#title' => t("Node types"),
    '#description' => t('Select which nodes the ShareThis widget should appear on.'),
    '#required' => TRUE,
    '#type' => 'checkboxes',
    '#options' => $node_type_options,
    '#default_value' => $nodes_selected
  );
  $form['context']['sharethis_teaser_option'] = array(
    '#title' => t('Only full view'),
    '#type' => 'checkbox',
    '#default_value' => $teaser ? 1 : 0,
    '#description' => t('When checked, will not show the widget on node teasers.'),
  );
  $form['context']['sharethis_comments'] = array(
    '#title' => t('Comments'),
    '#type' => 'checkbox',
    '#default_value' => variable_get('sharethis_comments', FALSE),
    '#description' => t('Display ShareThis on comments.'),
    '#access' => module_exists('comment'),
  );
  $form['context']['sharethis_location'] = array(
    '#title' => t('Location'),
    '#type' => 'radios',
    '#options' => array(
      'content' => t('Node content'),
      'block' => t('Block'),
      'links' => t('Links area'),
    ),
    '#default_value' => variable_get('sharethis_location', 'content'),
    '#description' => t('Choose where the ShareThis widget should appear. When selected to display as a block, you must choose which region to display the <em>ShareThis block</em> in from the <a href="@blocksadmin">Blocks administration</a>.', array('@blocksadmin' => url('admin/structure/block'))),
  );
  $form['context']['sharethis_weight'] = array(
    '#title' => t('Weight'),
    '#description' => t('The weight of the widget determines the location on the page where it will appear.'),
    '#required' => FALSE,
    '#type' => 'select',
    '#options' => drupal_map_assoc(array(-100, -50, -25, -10, 0, 10, 25, 50, 100)),
    '#default_value' => variable_get('sharethis_weight', 10),
  );
  if (module_exists('token')) {
    $form['tokens'] = array(
      '#type' => 'fieldset',
      '#title' => t('Tokens'),
      '#group' => 'additional_settings',
      '#description' => t('Use tokens to customize the properties to be shared. Tokens may be used only with the Node Content and Links area locations.'),
      '#states' => array(
        'disabled' => array(
          ':input[name="sharethis_location"]' => array('value' => 'block'),
        ),
      ),
    );
    $form['tokens']['sharethis_title_global'] = array(
      '#title' => t('Title'),
      '#description' => t('You can use tokens to generate the title when sharing. By default the node title will be used.'),
      '#type' => 'textfield',
      '#default_value' => variable_get('sharethis_title_global', FALSE),
      '#element_validate' => array('token_element_validate'),
      '#token_types' => array('node')
    );
    $form['tokens']['sharethis_url_global'] = array(
      '#title' => t('URL'),
      '#description' => t('You can use tokens to generate the URL when sharing. By default the node URL will be used.'),
      '#type' => 'textfield',
      '#default_value' => variable_get('sharethis_url_global', FALSE),
      '#element_validate' => array('token_element_validate'),
      '#token_types' => array('node')
    );
    $form['tokens']['sharethis_summary_global'] = array(
      '#title' => t('Summary'),
      '#description' => t('You can use tokens to generate the summary when sharing. By default the node summary will be used.'),
      '#type' => 'textfield',
      '#default_value' => variable_get('sharethis_summary_global', FALSE),
      '#element_validate' => array('token_element_validate'),
      '#token_types' => array('node')
    );
    $form['tokens']['sharethis_image_global'] = array(
      '#title' => t('Image'),
      '#description' => t('You can use tokens to generate the image when sharing. By default the value of the og:image meta tag will be used.'),
      '#type' => 'textfield',
      '#default_value' => variable_get('sharethis_image_global', FALSE),
      '#element_validate' => array('token_element_validate'),
      '#token_types' => array('node')
    );
    $form['tokens']['token_help'] = array(
      '#title' => t('Replacement patterns'),
      '#theme' => 'token_tree',
      '#token_types' => array('node'),
      '#collapsible' => TRUE,
      '#collapsed' => FALSE,
    );
  }
  $form['advanced'] = array(
    '#type' => 'fieldset',
    '#title' => t('Advanced'),
    '#group' => 'additional_settings',
    '#description' => t('The advanced settings can usually be ignored if you have no need for them.'),
  );
  $form['advanced']['sharethis_publisherID'] = array(
    '#title' => t("Insert a publisher key (optional)."),
    '#description' => t("When you install the module, we create a random publisher key.  You can register the key with ShareThis by contacting customer support.  Otherwise, you can go to <a href='http://www.sharethis.com/account'>ShareThis</a> and create an account.<br />Your official publisher key can be found under 'My Account'.<br />It allows you to get detailed analytics about sharing done on your site."),
    '#type' => 'textfield',
    '#default_value' => $publisher
  );
  $form['advanced']['sharethis_late_load'] = array(
    '#title' => t('Late Load'),
    '#description' => t("You can change the order in which ShareThis widget loads on the user's browser. By default the ShareThis widget loader loads as soon as the browser encounters the JavaScript tag; typically in the tag of your page. ShareThis assets are generally loaded from a CDN closest to the user. However, if you wish to change the default setting so that the widget loads after your web-page has completed loading then you simply tick this option."),
    '#type' => 'checkbox',
    '#default_value' => variable_get('sharethis_late_load', FALSE),
  );
  $form['advanced']['sharethis_twitter_suffix'] = array(
    '#title' => t("Twitter Suffix"),
    '#description' => t("Optionally append a Twitter handle, or text, so that you get pinged when someone shares an article. Example: <em>via @YourNameHere</em>"),
    '#type' => 'textfield',
    '#default_value' => variable_get('sharethis_twitter_suffix', ''),
  );
  $form['advanced']['sharethis_twitter_handle'] = array(
    '#title' => t('Twitter Handle'),
    '#description' => t('Twitter handle to use when sharing.'),
    '#type' => 'textfield',
    '#default_value' => variable_get('sharethis_twitter_handle', ''),
  );
  $form['advanced']['sharethis_twitter_recommends'] = array(
    '#title' => t('Twitter recommends'),
    '#description' => t('Specify a twitter handle to be recommended to the user.'),
    '#type' => 'textfield',
    '#default_value' => variable_get('sharethis_twitter_recommends', ''),
  );
  $form['advanced']['sharethis_option_onhover'] = array(
    '#type' => 'checkbox',
    '#title' => t('Display ShareThis widget on hover'),
    '#description' => t('If disabled, the ShareThis widget will be displayed on click instead of hover.'),
    '#default_value' => variable_get('sharethis_option_onhover', TRUE),
  );
  return system_settings_form($form);
}

/**
 * Form submission handler for sharethis_configuration_form().
 */
function sharethis_configuration_form_validate($form, &$form_state) {
  //Additional filters for the service option input

  // Sanitize the publisher ID option.  Since it's a text field, remove anything that resembles code
  $form_state['values']['sharethis_service_option'] = filter_xss($form_state['values']['sharethis_service_option'], array());

  //Additional filters for the option extras input
  $form_state['values']['sharethis_option_extras'] = (isset($form_state['values']['sharethis_option_extras'])) ? $form_state['values']['sharethis_option_extras'] : array();

  // Implode the node options
  $form_state['values']['sharethis_node_option'] = implode(',', $form_state['values']['sharethis_node_option']);

  // Set a default value for the teaser option
  $form_state['values']['sharethis_teaser_option'] = (isset($form_state['values']['sharethis_teaser_option'])) ? $form_state['values']['sharethis_teaser_option'] : 0;

  // Sanitize the publisher ID option.  Since it's a text field, remove anything that resembles code
  $form_state['values']['sharethis_publisherID'] = filter_xss($form_state['values']['sharethis_publisherID'], array());

  // Ensure default value for twitter suffix
  $form_state['values']['sharethis_twitter_suffix'] = (isset($form_state['values']['sharethis_twitter_suffix'])) ? $form_state['values']['sharethis_twitter_suffix'] : '';

  // Ensure default value for twitter handle
  $form_state['values']['sharethis_twitter_handle'] = (isset($form_state['values']['sharethis_twitter_handle'])) ? $form_state['values']['sharethis_twitter_handle'] : '';

  // Ensure default value for twitter recommends
  $form_state['values']['sharethis_twitter_recommends'] = (isset($form_state['values']['sharethis_twitter_recommends'])) ? $form_state['values']['sharethis_twitter_recommends'] : '';
}

 /**
 * Implements hook_menu().
 *
 * This is the ShareThis Config Menu.
 */
function sharethis_menu() {
  $items['admin/config/services/sharethis'] = array(
    'title' => 'ShareThis',
    'description' => 'Choose the widget, button family, and services for using ShareThis to share content online.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('sharethis_configuration_form'),
    'access arguments' => array('administer sharethis')
  );
  return $items;
}

 /**
 * Implements hook_node_view().
 *
 * Inserts ShareThis widget code onto each node view.
 * TODO: Want to add the option somewhere to select nodes.
 *
 * @param node
 *   The node that is being acted upon
 * @param view_mode
 *   The type of view (teaser, full, etc)
 * @param langcode
 *   Information about the language
 */
function sharethis_node_view($node, $view_mode, $langcode) {
  // Don't display if the user is currently searching, or in the RSS feed.
  switch ($view_mode) {
    case 'search_result':
    case 'search_index':
    case 'rss':
      return;
  }
  // First get all of the options for the sharethis widget from the database:
  $data_options = sharethis_get_options_array();

  // This looks to see if the path variable has been posted by some rewrite module.
  // This is not super efficient, O(N), but N is often less than 20.
  $is_path = FALSE;
  foreach ($node as $k => $v) {
    if ($k == "path") {
      $is_path = TRUE;
    }
  }
  // This will choose the path to use.
  if ($is_path) {
    $path_module = $node->path;
  }
  else {
    $path_module = "/node/" . $node->nid;
  }

  // Pathauto integration !
  if (module_exists('pathauto')) {
    $path_module = '/' . drupal_lookup_path('alias', 'node/' . $node->nid);
  }

  global $base_url;
  // Get the full path to insert into the Share Buttons.
  $values['path'] = $base_url . $path_module;
  $values['title'] = $node->title;
  if (module_exists('token')) {
    $token_options = array('title', 'summary', 'url', 'image');
    foreach ($token_options as $option) {
      // First check if token is available by content type
      $token = variable_get('sharethis_' . $option . '_' . $node->type, FALSE);
      if ($token == FALSE) {
        // Use global
        $token = variable_get('sharethis_' . $option . '_global', FALSE);
      }
      if ($token != FALSE) {
        $values[$option] = token_replace($token, array('node'=>$node), array('clear'=>TRUE));
      }
    }
  }

  // Only display the ShareThis buttons if this node fits all the requirements
  if (strpos($data_options['nodeType'], $node->type) !== FALSE) { // Make sure this is the right type of node.
    if (($data_options['viewMode'] == "1") && ($view_mode == "teaser")) { // If "don't show for teaser" is enabled, and this is a teaser, don't do anything
      // Do nothing.
    }
    else {
      // Check where we want to display the ShareThis widget.
      switch (variable_get('sharethis_location', 'content')) {
        case 'content':
          $node->content['sharethis'] = array(
            '#tag' => 'div', // Wrap it in a div.
            '#type' => 'html_tag',
            '#attributes' => array('class' => 'sharethis-buttons'),
            '#value' => sharethis_get_button_HTML($data_options, $values),
            '#weight' => intval(variable_get('sharethis_weight', 10)),
          );
        break;
        case 'links':
          $links['sharethis'] = array(
            'html' => TRUE,
            'title' => sharethis_get_button_HTML($data_options, $values),
            'attributes' => array('class' => 'sharethis-buttons'),
          );
          $node->content['links']['sharethis'] = array(
            '#theme' => 'links',
            '#links' => $links,
            '#attributes' => array(
              'class' => array('links', 'inline'),
            ),
            '#tag' => 'div', // Wrap it in a div.
            '#type' => 'html_tag',
            '#weight' => intval(variable_get('sharethis_weight', 10)),
          );
        break;
      }
    }
  }
}

/**
 * Implements hook_form_alter().
 */
function sharethis_form_node_type_form_alter(&$form, $form_state) {
  if (module_exists('token')) { // sharethis allowed for this content type?
    $_sharethisOptions = sharethis_get_options_array();
    $node_types = explode(',', $_sharethisOptions['nodeType']);
    $form['sharethis'] = array(
      '#type' => 'fieldset',
      '#title' => t('ShareThis'),
      '#collapsible' => TRUE,
      '#collapsed' => TRUE,
      '#group' => 'additional_settings',
      '#tree' => TRUE,
      '#weight' => 10,
      '#disabled' => !in_array($form['#node_type']->type, $node_types),
    );

    $form['sharethis']['sharethis_title_' . $form['#node_type']->type] = array(
      '#title' => t('ShareThis title'),
      '#description' => t('You can use tokens to generate the title when sharing. By default the node title will be used.'),
      '#type' => 'textfield',
      '#default_value' => variable_get('sharethis_title_' . $form['#node_type']->type, FALSE),
      '#element_validate' => array('token_element_validate'),
      '#token_types' => array('node')
    );
    $form['sharethis']['sharethis_url_' . $form['#node_type']->type] = array(
      '#title' => t('URL'),
      '#description' => t('You can use tokens to generate the URL when sharing. By default the node URL will be used.'),
      '#type' => 'textfield',
      '#default_value' => variable_get('sharethis_url_' . $form['#node_type']->type, FALSE),
      '#element_validate' => array('token_element_validate'),
      '#token_types' => array('node')
    );
    $form['sharethis']['sharethis_summary_' . $form['#node_type']->type] = array(
      '#title' => t('Summary'),
      '#description' => t('You can use tokens to generate the summary when sharing. By default the node summary will be used.'),
      '#type' => 'textfield',
      '#default_value' => variable_get('sharethis_summary_' . $form['#node_type']->type, FALSE),
      '#element_validate' => array('token_element_validate'),
      '#token_types' => array('node')
    );
    $form['sharethis']['sharethis_image_' . $form['#node_type']->type] = array(
      '#title' => t('Image'),
      '#description' => t('You can use tokens to generate the image when sharing. By default the value of the og:image meta tag will be used.'),
      '#type' => 'textfield',
      '#default_value' => variable_get('sharethis_image_' . $form['#node_type']->type, FALSE),
      '#element_validate' => array('token_element_validate'),
      '#token_types' => array('node')
    );
    $form['sharethis']['token_help'] = array(
      '#title' => t('Replacement patterns'),
      '#theme' => 'token_tree',
      '#token_types' => array('node'),
      '#collapsible' => TRUE,
      '#collapsed' => FALSE,
    );

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

/**
 * Form submission handler for node type edit forms().
 */
function sharethis_node_type_form_submit($form, &$form_state) {
  $type = trim($form_state['values']['type']);
  variable_set('sharethis_title_' . $type, $form_state['values']['sharethis']['sharethis_title_' . $type]);
  variable_set('sharethis_url_' . $type, $form_state['values']['sharethis']['sharethis_url_' . $type]);
  variable_set('sharethis_summary_' . $type, $form_state['values']['sharethis']['sharethis_summary_' . $type]);
  variable_set('sharethis_image_' . $type, $form_state['values']['sharethis']['sharethis_image_' . $type]);
}

/**
 * sharethisGetOptionArray is a helper function for DB access.
 *
 * Returns options that have been stored in the database.
 *
 * @TODO: Switch from this function to just straight variable_get() calls.
 */
function sharethis_get_options_array() {
  return array(
    'buttons' => variable_get('sharethis_button_option', 'stbc_large'),
    'nodeType' => variable_get('sharethis_node_option', 'page,article'),
    'publisherID' => variable_get('sharethis_publisherID', ''),
    'services' => variable_get('sharethis_service_option', '"Tweet:twitter","Facebook:facebook","ShareThis:sharethis"'),
    'option_extras' => variable_get('sharethis_option_extras', array()),
    'viewMode' => variable_get('sharethis_teaser_option', 0),
    'widget' => variable_get('sharethis_widget_option', 'st_multi'),
    'onhover' => variable_get('sharethis_option_onhover', TRUE),
    'twitter_suffix' => variable_get('sharethis_twitter_suffix', ''),
    'twitter_handle' => variable_get('sharethis_twitter_handle', ''),
    'twitter_recommends' => variable_get('sharethis_twitter_recommends', ''),
    'late_load' => variable_get('sharethis_late_load', FALSE),
  );
}

/**
 * sharethisGet_button_HTML is the function that creates the ShareThis code
 * It returns the appropriate html based on your settings.
 */
function sharethis_get_button_HTML($data_options, $values) {
  // Inject the extra services.
  foreach ($data_options['option_extras'] as $service) {
    $data_options['services'] .= ',"' . $service . '"';
  }
  // The share buttons are simply spans of the form class='st_SERVICE_BUTTONTYPE' -- "st" stands for ShareThis.
  $type = drupal_substr($data_options['buttons'], 4);
  $type = $type == "_" ? "" : check_plain($type);
  $service_array = explode(",", $data_options['services']);
  $st_spans = "";
  foreach ($service_array as $service_full) {
    // Strip the quotes from the element in the array (They are there for javascript)
    $service = explode(":", $service_full);

    // Service names are expected to be parsed by Name:machine_name. If only one
    // element in the array is given, it's an invalid service.
    if (count($service) < 2) {
      continue;
    }

    // Find the service code name.
    $serviceCodeName = drupal_substr($service[1], 0, -1);

    // Switch the title on a per-service basis if required.
    $title = $values['title'];
    switch ($serviceCodeName) {
      case 'twitter':
        $title = empty($data_options['twitter_suffix']) ? $title : check_plain($title) . ' ' . check_plain($data_options['twitter_suffix']);
        break;
    }

    // Sanitize the service code for display.
    $display = check_plain($serviceCodeName);

    // Put together the span attributes.
    $attributes = array(
      'st_url' => $values['path'],
      'st_title' => $title,
      'class' => 'st_' . $display . $type,
    );
    if (isset($values['summary'])) {
      $attributes['st_summary'] = $values['summary'];
    }
    if (isset($values['image'])) {
      $attributes['st_image'] = $values['image'];
    }
    if ($serviceCodeName == 'twitter') {
      if (!empty($data_options['twitter_handle'])) {
        $attributes['st_via'] = $data_options['twitter_handle'];
        $attributes['st_username'] = $data_options['twitter_recommends'];
      }
    }
    // Only show the display text if the type is set.
    if (!empty($type)) {
      $attributes['displaytext'] = check_plain($display);
    }

    // Render the span tag.
    $st_spans .= theme('html_tag', array(
      'element' => array(
        '#tag' => 'span',
        '#attributes' => $attributes,
        '#value' => '', // It's an empty span tag.
      ),
    ));
  }

  // These are the ShareThis scripts:
  $st_js_options['switchTo5x'] = $data_options['widget'] == 'st_multi' ? TRUE : FALSE;
  if ($data_options['late_load']) {
    $st_js_options['__st_loadLate'] = TRUE;
  }
  $st_js = "<script type='text/javascript'>";
  foreach ($st_js_options as $name => $value) {
    $st_js .= 'var ' . $name . ' = ' . drupal_json_encode($value) . ';';
  }
  $st_js .= '</script>';

  // Check if we're using SSL or not.
  if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') {
    $st_js .= "<script type='text/javascript' src='https://ws.sharethis.com/button/buttons.js'></script>";
  }
  else {
    $st_js .= "<script type='text/javascript' src='http://w.sharethis.com/button/buttons.js'></script>";
  }

  // Provide the stLight options.
  $options = array(
    'publisher' => $data_options['publisherID'],
  );
  if (isset($data_options['onhover']) && $data_options['onhover'] == FALSE) {
    $options['onhover'] = FALSE;
  }
  $stlight = drupal_json_encode($options);

  // Output the embedded JavaScript.
  $st_js .= "<script type='text/javascript'>if (stLight !== undefined) { stLight.options($stlight); }</script>";
  return '<div class="sharethis-wrapper">' . $st_spans . $st_js . '</div>';
}

/**
 * Implements hook_block_info().
 */
function sharethis_block_info() {
  $blocks['sharethis_block'] = array(
    'info' => t('ShareThis'),
  );
  return $blocks;
}

/**
 * Implements of hook_block_view().
 */
function sharethis_block_view($delta='') {
  $block = array();
  switch ($delta) {
    case 'sharethis_block':
      $block['content'] = sharethis_block_contents();
      break;
  }
  return $block;
}

/**
 * custom html block
 * @return string
 */
function sharethis_block_contents() {
  if (variable_get('sharethis_location', 'content') == 'block') {
    // First get all of the options for the sharethis widget from the database:
    $data_options = sharethis_get_options_array();
    $values['path'] = url($_GET['q'], array('absolute' => TRUE));
    $values['title'] = drupal_get_title();
    return sharethis_get_button_HTML($data_options, $values);
  }
}

/**
 * Implements hook_comment_view().
 */
function sharethis_comment_view($comment, $view_mode, $langcode) {
  if (variable_get('sharethis_comments', FALSE)) {
    $data_options = sharethis_get_options_array();
    $values['path'] = url($_GET['q'], array(
      'absolute' => TRUE,
      'fragment' => 'comment-' . $comment->cid,
    ));
    $values['title'] = drupal_get_title();
    $html = sharethis_get_button_HTML($data_options, $values);
    $comment->content['sharethis'] = array(
      '#type' => 'html_tag',
      '#value' => $html,
      '#tag' => 'div',
      '#attributes' => array('class' => 'sharethis-comment'),
      '#weight' => intval(variable_get('sharethis_weight', 10)),
    );
  }
}

/**
 * Implements hook_contextual_links_view_alter().
 */
function sharethis_contextual_links_view_alter(&$element, $items) {
  // Add the configuration link for the ShareThis settings on the block itself.
  if (isset($element['#element']['#block']->module) && $element['#element']['#block']->module == 'sharethis' && $element['#element']['#block']->delta == 'sharethis_block' && user_access('access administration pages')) {
    $element['#links']['sharethis-configure'] = array(
      'title' => t('Configure ShareThis'),
      'href' => 'admin/config/services/sharethis',
    );
  }
}

/**
 * Implements hook_views_api().
 */
function sharethis_views_api() {
  return array(
    'api' => 3,
    'path' => drupal_get_path('module', 'sharethis') . '/views',
  );
}