nodejs_demo.module

<?php
/**
 * Implements hook_permission().
 * @return array
 */
function nodejs_permission() {
  return array(
    'view nodejs_demo demo' => array(
      'title' => t('View the nodejs demo'),
    ),
  );
}

/**
 * Implements hook_nodejs_handlers_info().
 *
 * -> ADD NODEJS Callback handlers ...
 */
function nodejs_demo_nodejs_handlers_info() {
  // we don't need this, as our js is explicitly included only on one page ...
  return array();
  /*
  // if we wanted it to handle events on any page ...
  return array(
    drupal_get_path('module', 'nodejs_demo') . '/nodejs_demo.js',
  );
  */
}

/**
 * Implements hook_nodejs_user_channels().
 *
 * -> ANY AUTHENTICATED USER ARE ADDED TO CHANNEL *ONCE* AND ONLY *AT* INITIAL AUTHORISATION!
 */
function nodejs_demo_nodejs_user_channels($account) {
  // we don't need this - we use tokenChannels
  return array();
}


/**
 * Implements hook_menu(),
 */
function nodejs_demo_menu() {
  return array(
    'nodejs_demo/dashboard' => array(
      'access arguments' => array('view nodejs_demo demo'),
      'page callback' => 'nodejs_demo_dashboard',
      'title' => 'Nodejs Demo Dashboard',
    ),
    '_/nodejs_demo/chaos' => array(
      'access arguments' => array('view nodejs_demo demo'),
      'page callback' => 'nodejs_demo_chaos',
      'title' => 'Chaos',
    )
  );
}

function nodejs_demo_chaos($type = 'ajax') {
  nodejs_enqueue_message(
    (object) array(
      'channel' => 'nodejs_demo_chaos',
      'type' => 'something'
    )
  );
  ajax_deliver('Hello');
}

/**
 * Page callback for dashboard
 * @return array render array
 */
function nodejs_demo_dashboard() {
  // load google viz
  drupal_add_js('https://www.google.com/jsapi', 'external');
  drupal_add_js('google.load("visualization", "1", {packages: ["corechart"]});', 'inline');

  // add this here 
  drupal_add_js(drupal_get_path('module', 'nodejs_demo') . '/nodejs_demo.js', array('type' => 'file'));
  
  // send a content channel token - we would have to check here if the user has access (if it differs from menu)
  nodejs_send_content_channel_token('nodejs_demo_broadcast');

  // load the dblog overview to piggyback (it subscribes to watchdog_dblog)
  module_load_include('inc', 'dblog', 'dblog.admin');
  $content = array();
  // ugly, ugly, ugly 
  $content['nodejs_demo_stream'] = array(
    '#type' => 'markup',
    '#prefix' => '<div id="nodejs-demo-stream-wrapper" style="width: 400px; height: 300px;">',
    '#markup' => t('Please wait while we load realtime data ...'),
    '#suffix' => '</div>'
  );
  $content['nodejs_demo_trigger'] = array(
    '#type' => 'markup',
    '#prefix' => '<div id="nodejs-demo-trigger-wrapper">',
    '#markup' => '<a id="nodejs-demo-trigger" href="#">Create chaos!</a>',
    '#suffix' => '</div>'
  );

  // all i want is a little drupal link ...
  drupal_add_library('system', 'drupal.ajax');
  drupal_add_library('system', 'jquery.form');
  $content['nodejs_demo_trigger_drupal'] = array(
    '#type' => 'link',
    '#prefix' => '<div id="nodejs-demo-trigger-drupal-wrapper">',
    '#href' => '_/nodejs_demo/chaos',
    '#title' => t('Create chaos via drupal'),
    '#ajax' => array(
      'callback' => 'nodejs_demo_chaos',
      'wrapper' => 'ajax-response-goes-here',
      'method' => 'replace',
      'effect' => 'fade',
    ),
    '#suffix' => '</div>'
  );

  $content += dblog_overview();
  // remove the filter forms
  unset($content['dblog_filter_form']);
  unset($content['dblog_clear_log_form']);
  return $content;
}