materio-base-d7/sites/all/modules/gui/materiobasemod/materio_personalnotes.module

<?php


/**
 * Implements hook_init().
 */
function materio_personalnotes_init() {
  drupal_add_js(drupal_get_path('module', 'materio_personalnotes').'/js/materio_personalnotes.js');
}


/**
 * Implements hook_permission().
 */
function materio_personalnotes_permission() {
  $perms =  array(
    'create own personal notes' =>  array(
      'title' => t('Create own personal notes'),
      'description' => t('Create own personal notes'),
    ),
  );

  return $perms;
}

// function materio_personalnotes_menu(){
//   $items = array();
//
//   $base = array(
//     'type' => MENU_CALLBACK,
//     'file' => 'materio_personalnotes.pages.inc',
//   );
//
//   $items['materio_personalnotes/registerblock'] = $base+array(
//     'title' => 'Materio base user ajax',
//     'page callback' => 'materio_personalnotes_registerblock',
//     // 'page arguments' => array(),
//     'access callback' => TRUE,
//   );
//
//   return $items;
// }

/**
 * Implements hook_menu_alter().
 */
// function materio_personalnotes_menu_alter(&$items) {
//   $items['user/%user']['access callback'] = 'user_access';
//   $items['user/%user']['access arguments'] = array('view own user profile');
// }

/**
 * Implements hook_entity_view().
 *
 * Note this is broken for taxonomy terms. @see http://drupal.org/node/1067120
 */
function materio_personalnotes_entity_view($entity, $type, $view_mode, $langcode) {
  if($type == 'node'){
    if(user_access('create own personal notes') && $view_mode != 'print'){

      $entity->content['personalnotelink'] = materio_personalnotes_get_note_link($entity);

      // drupal_add_css(drupal_get_path('module', 'flag') . '/theme/flag.css');
      // drupal_add_js(drupal_get_path('module', 'flag') . '/theme/flag.js');

    }
  }
}

function materio_personalnotes_get_note_link($entity){

  // if note alredy exists link to it

  // else create one
  #create new list
  $link = array(
    '#path' => '/node/add/note',
    '#query' => array(
      // 'edit[field_target_content][und][0][target_id]' => $entity->title.'('.$entity->nid.')',
      'target_id'=>$entity->nid,
    ),
    // get the content type from settings OR create the content type with module install
    // TODO: add data (node nid) for pre-filled reference field of new note
    '#attributes' => array(
      'class' => array('personal-note-link', 'personal-note-create'),
      'title' => t('create a note for @title.', array('@title'=>$entity->title)),
      'nid' => $entity->nid,
    ),
    '#theme'=>'materio_personalnotes_note_link',
  );

  if(isset($link)){
    // dsm($link, 'link');
    drupal_add_js(drupal_get_path('module', 'materio_personalnotes').'/js/dist/materio_personalnotes.min.js');
    return $link;
  }

  return;
}

/**
 * Implements hook_form_alter().
 */
function materio_personalnotes_form_alter(&$form, &$form_state, $form_id) {
  // dsm($form_id);
  /*
   *if (isset($form['type']) && $form['type']['#value'] . '_node_settings' == $form_id) {
   *  $form['workflow']['upload_' . $form['type']['#value']] = array(
   *    '#type' => 'radios',
   *    '#title' => t('Attachments'),
   *    '#default_value' => variable_get('upload_' . $form['type']['#value'], 1),
   *    '#options' => array(t('Disabled'), t('Enabled')),
   * );
   *}
   */
  if($form_id == "note_node_form" && $target_id = $_GET['target_id']){
    dsm($_GET, 'get');
    dsm($target_id, 'target_id');
    dsm($form, 'form');
    dsm($form_state, 'form_state');



    // $form['#after_build'][] = 'materio_personalnotes_noteform_after_build';

    // $form_state['field']['field_target_content']['und']['instance']['default_value'] = $target_id;
    $form['field_target_content_nid']['und'][0]['value']['#default_value'] = $target_id;
    $form['field_target_content_nid']['und'][0]['value']['#type'] = 'hidden';
    // $form_state['field']['field_target_content']['und']['items_count'] = 1;
  }
}

/**
 * Implements hook_node_presave().
 */
function materio_personalnotes_node_presave($node) {
  /*
   *if ($node->nid && $node->moderate) {
   *  // Reset votes when node is updated:
   *  $node->score = 0;
   *  $node->users = '';
   *  $node->votes = 0;
   *}
   */
  /* Your code here */
}

// function materio_personalnotes_noteform_after_build($form, &$form_state) {
//   dsm($_GET, 'get');
//   dsm($form, 'form');
//   dsm($form_state, 'form_state');
//
//   $form_state['field_target_content']['und'][0]['target_id']['#default_value'] = $target_id;
//
//    // switch ($form['form_id']['#value']) {
//    //
//    //   case 'your_form':
//    //
//    //      $form['field_yournoderef']['nid']['nid']['#value'] = arg(3);
//    //      $form['field_yournoderef']['#access']  = false;
//    //      break;
//    //
//    //  }
//
//   return $form;
//
// }

/**
 * Implements hook_theme().
 */
function materio_personalnotes_theme($existing, $type, $theme, $path) {
  return array(
    'materio_personalnotes_note_link' => array(
      'variables' => array('path' => NULL, 'query' => array(), 'attributes' => array()),
    ),
  );
}

function theme_materio_personalnotes_note_link($vars){
  return l(
    '<i class="fi-pencil"></i>',
    $vars['path'],
    array(
      'attributes' => $vars['attributes'],
      'html' => true,
      'query' => $vars['query'],
    )
  );
}