<?php

function dnd_test_menu() {
  $items = array();
  $items['dnd-test/library'] = array(
    'title' => 'Drag and drop test library',
    'page callback' => 'dnd_test_library',
    'access arguments' => array('access dnd test library'),
  );
  return $items;
}

function dnd_test_perm() {
  return array('access dnd test library');
}

function dnd_test_form_alter(&$form, &$form_state) {
  if ($form['#id'] == 'node-form' && $form['type']['#value'] == 'page') {
    drupal_add_css(drupal_get_path('module', 'dnd_test') .'/dnd_test.css');
    $form['body_field']['body']['#dnd-enabled'] = TRUE;
    $form['body_field']['body']['#dnd-settings'] = array(
      'drop_selector' => '#edit-body-dnd-library .drop',
      'url' => 'dnd-test/library',
    );
    $form['body_field']['body']['#rows'] = 28;
  }
}

function dnd_test_library() {

  $var = array(
    'header' => '<h3>Test library</h3>',
    'footer' => '<div class="pager">'. l(1, 'dnd-test/library') . ' '. l(2, 'dnd-test/library', array('query' => array('page' => 2))) .'</div>',
  );
  $modifier = ($_GET['page'] == 2) ? 'page-2' : 'page-1';
  for ($i=1; $i < 6; $i++) {
    $library = '<div class="row"><a href="" class="drop" id="image-'. $i .'-'. $modifier .'">'. theme('image', drupal_get_path('module', 'dnd_test') .'/img/'. $modifier .'-small.jpg') .'Image '. $i .'</a></div>';
    $editor = theme('image', drupal_get_path('module', 'dnd_test') .'/img/'. $modifier .'-large.jpg');
    $var['library']['image-'. $i .'-'. $modifier] = array(
      'library' => $library,
      'editor'  => $editor,
    );
  }
  drupal_json($var);
  exit();
}