printfriendly.module in PrintFriendly & PDF 7.2

Adds PrintFriendly button to chosen node types and provides a block.

File

printfriendly.module

<?php

/**
 * @file
 * Adds PrintFriendly button to chosen node types and provides a block.
 */

/**
 * Implements hook_help().
 */
function printfriendly_help($path) {
  switch ($path) {
    case 'admin/config/services/printfriendly':
    case 'admin/help#printfriendly':
      return t('PrintFriendly module lets you include a link to let your site users to quickly print, email or download the page as a PDF file using !printfriendly service.', array(
        '!printfriendly' => '<a href="http://www.printfriendly.com">PrintFriendly.com</a>',
      ));
  }
}

/**
 * Implements hook_permission().
 */
function printfriendly_permission() {
  return array(
    'administer printfriendly' => array(
      'title' => t('Administer PrintFriendly'),
      'description' => t('Configure how PrintFriendly is used on the site.'),
    ),
    'access printfriendly' => array(
      'title' => t('Access PrintFriendly'),
      'description' => t('Users with this permission will be able to use and see PrintFriendly.'),
    ),
  );
}

/**
 * Implements hook_menu().
 */
function printfriendly_menu() {
  $items['admin/config/services/printfriendly'] = array(
    'title' => 'PrintFriendly',
    'description' => 'Provides the configuration options for how PrintFriendly operates on the site.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'printfriendly_admin_settings',
    ),
    'access arguments' => array(
      'administer printfriendly',
    ),
    'file' => 'printfriendly.admin.inc',
  );
  return $items;
}

/**
 * Implements hook_block_info().
 */
function printfriendly_block_info() {
  $blocks['printfriendly'] = array(
    'info' => t('PrintFriendly Widget'),
    'cache' => DRUPAL_CACHE_GLOBAL,
  );
  return $blocks;
}

/**
 * Implements hook_block_view().
 */
function printfriendly_block_view($delta = '') {
  $block = array();
  switch ($delta) {
    case 'printfriendly':
      $block['subject'] = t('PrintFriendly');
      $block['content'] = printfriendly_create_button();
      break;
  }
  return $block;
}

/**
 * Implements hook_node_view().
 */
function printfriendly_node_view($node, $view_mode) {
  if (in_array($view_mode, array_filter(variable_get('printfriendly_display', array(
    'full',
  ))))) {
    if (in_array($node->type, variable_get('printfriendly_types', array()), TRUE) && user_access('access printfriendly')) {
      if ($view_mode == 'teaser') {
        $block = printfriendly_create_button('node/' . $node->nid, FALSE);
      }
      else {
        $block = printfriendly_create_button();
        $js = key($block['#attached']['js']);
        drupal_add_js($js, $block['#attached']['js'][$js]);
      }
      $links['printfriendly'] = $block;
      $node->content['links']['printfriendly'] = array(
        '#theme' => 'links',
        '#links' => $links,
        '#attributes' => array(
          'class' => array(
            'links',
            'inline',
          ),
        ),
      );
    }
  }
}

/**
 * Register module with views api.
 */
function printfriendly_views_api() {
  return array(
    'api' => '3.0',
    'path' => drupal_get_path('module', 'printfriendly') . '/views',
  );
}

/**
 * Shared function generate code for printfriendly button for nodes and block.
 *
 * @param string $url
 *   Path to the page to pass to PrintFriendly.
 * @param bool $popup
 *   Whether the JavaScript should be added or not (popup).
 * @return string
 *   String containing html code for the button
 *
 */
function printfriendly_create_button($url = NULL, $popup = TRUE) {
  if (!$url && !is_numeric($url)) {
    $url = $_GET['q'];
  }
  $query_string = $_GET;
  unset($query_string['q']);
  $url = url($url, array(
    'absolute' => TRUE,
    'query' => $query_string,
  ));
  $image = variable_get('printfriendly_image', 'button-print-grnw20.png');
  if ($image == '_text_') {
    $link_content = '<span class="printfriendly-link printfriendly-text-link">';
    $link_content .= check_plain(variable_get('printfriendly_text', t('Print this page')));
    $link_content .= '</span>';
  }
  else {
    $image = drupal_get_path('module', 'printfriendly') . '/images/' . variable_get('printfriendly_image', 'button-print-grnw20.png');
    $link_content = theme('image', array(
      'path' => $image,
      'alt' => variable_get('printfriendly_description', t('Printer Friendly and PDF')),
    ));
  }
  $options = array(
    'attributes' => array(
      'class' => 'printfriendly',
      'onclick' => 'window.print(); return false;',
      'title' => variable_get('printfriendly_description', t('Printer Friendly and PDF')),
    ),
    'html' => TRUE,
    'query' => array(
      'url' => $url,
    ),
    'external' => TRUE,
  );
  if ($popup) {
    $return = array(
      '#markup' => l($link_content, 'http://www.printfriendly.com/print', $options),
    );
    if ($attach = _printfriendly_get_button_script()) {
      $return['#attached']['js']['printfriendly_script'] = array(
        'data' => $attach,
        'type' => 'inline',
        'scope' => 'footer',
      );
    }
    return $return;
  }
  else {
    unset($options['attributes']['onclick']);
    return array(
      '#markup' => l($link_content, 'http://www.printfriendly.com/print', $options),
    );
  }
}
function _printfriendly_get_button_script() {
  $added =& drupal_static(__FUNCTION__, FALSE);
  if ($added) {
    return NULL;
  }
  $added = TRUE;
  $print_settings = variable_get('printfriendly_options', array(
    'pfdisableClickToDel' => 0,
    'pfHideImages' => 0,
    'pfImageDisplayStyle' => 'right',
    'pfDisableEmail' => 0,
    'pfDisablePDF' => 0,
    'pfDisablePrint' => 0,
  ));
  $script = '';
  foreach ($print_settings as $setting => $value) {
    $script .= 'var ' . $setting . ' = ';
    if (is_numeric($value)) {
      $script .= (int) $value;
    }
    else {
      $script .= "'" . (string) addslashes($value) . "'";
    }
    $script .= ';';
  }
  $script .= <<<SNIPPET
(function(){var js, pf;pf = document.createElement('script');pf.type = 'text/javascript';
if ('https:' === document.location.protocol){
  js='https://pf-cdn.printfriendly.com/ssl/main.js'
}else{
  js='http://cdn.printfriendly.com/printfriendly.js'
}
pf.src=js;document.getElementsByTagName('head')[0].appendChild(pf)})();
SNIPPET;
  return $script;
}

Functions

Name	Description
printfriendly_block_info	Implements hook_block_info().
printfriendly_block_view	Implements hook_block_view().
printfriendly_create_button	Shared function generate code for printfriendly button for nodes and block.
printfriendly_help	Implements hook_help().
printfriendly_menu	Implements hook_menu().
printfriendly_node_view	Implements hook_node_view().
printfriendly_permission	Implements hook_permission().
printfriendly_views_api	Register module with views api.
_printfriendly_get_button_script