islandora/form_elements/includes/filechooser.inc

<?php

/**
 * @file 
 * 
 */


function theme_filechooser($element) {
  global $base_url;
  $path = drupal_get_path('module', 'islandora_form_elements');

  drupal_add_js($path . '/js/jcarousellite_1.0.1.js');
  drupal_add_js($path . '/js/jquery.easing.1.1.js');
  drupal_add_js($path . '/js/jquery.mousewheel.min.js');
  drupal_add_js($path . '/js/jquery.loadImages.1.0.1.js');
  drupal_add_js($path . '/js/jquery.breakly-1.0.js');
  drupal_add_js($path . '/js/filechooser.js');
  drupal_add_css($path . '/css/filechooser.css');

  module_load_include('inc', 'fedora_repository', 'ContentModel');
  $content_model_pid = ContentModel::getPidFromIdentifier($element['#model_pid']);


  $output = '<div class="carousel">
      <div class="jCarouselLite">
    <ul id="fileList" class="clear-block">
    <li class="loading"><div>Generating File Previews...<br/>(this could take a minute or two.)<br/><img src="' . $base_url . '/' . $path . '/images/ajax-loader.gif" id="ajaxBusy" alt="Loading"/></div></li>
    </ul>
      </div>
  <br clear="all"/>
  <a href="#" class="prev">Prev</a> <a href="#" class="next">Next</a>
  <input type="hidden" id="model_pid" value="' . $content_model_pid . '"/>
  <input type="hidden" name="' . $element['#name'] . '" value="' . check_plain($element['#value']) . '" id="fileField"/></div>';
  return theme('form_element', $element, $output);
}

function ife_filechooser_get_thumbnail($cp_pid, $cm_pid, $file) {
  module_load_include('inc', 'fedora_repository', 'CollectionPolicy');
  module_load_include('inc', 'fedora_repository', 'ContentModel');
  module_load_include('inc', 'fedora_repository', 'MimeClass');

  $mime_class = new MimeClass();

  $cm = ContentModel::loadFromModel($cm_pid);
  $cp = CollectionPolicy::loadFromCollection($cp_pid);
  $path = $cp->getStagingArea() . '/';

  if ($cm !== FALSE && $cp !== FALSE) {
    if (is_file($path . $file)) {

      $mime = $mime_class->getType($path . $file);

      $allowed_types = $cm->getMimetypes();

      if (in_array($mime, $allowed_types)) {

        $thumbnail = '';
        //executes ingest rules with the "preview" parameter set.
        if ($cm->execIngestRules($path . $file, $mime, TRUE) && isset($_SESSION['fedora_ingest_files']['TN']) && file_exists($_SESSION['fedora_ingest_files']['TN'])) {
          $thumbnail = $_SESSION['fedora_ingest_files']['TN'];
        }

        $thumbmime = $mime_class->getType($thumbnail);

        header('Pragma: no-cache');
        header('Content-Type: ' . $thumbmime);
        echo file_get_contents($thumbnail);
        exit();
      }
    }
  }
}

function ife_filechooser_cmp($a, $b) {
  return strcmp($a['name'], $b['name']);
}

function ife_filechooser_generate_thumbnails($cp_pid, $cm_pid) {
  module_load_include('inc', 'fedora_repository', 'CollectionPolicy');
  module_load_include('inc', 'fedora_repository', 'ContentModel');
  module_load_include('inc', 'fedora_repository', 'MimeClass');

  $cm = ContentModel::loadFromModel($cm_pid);
  $cp = CollectionPolicy::loadFromCollection($cp_pid);

  if ($cm === FALSE || $cp === FALSE) {
    echo '[]';
    exit();
  }

  $mime_class = new MimeClass();
  $path = $cp->getStagingArea() . '/';
  $start = isset($_GET['start']) ? intval($_GET['start']) : 0;
  $end = isset($_GET['end']) ? intval($_GET['end']) : 50;
  $thumbnails = array();
  $files = array();
  if ($cm !== FALSE && $cp !== FALSE) {
    $allowed_types = $cm->getMimetypes();
    if (file_exists($path) && is_dir($path)) {
      $dir = opendir($path);
      for ($i = $start; $i < $end && ($file = readdir($dir)) !== FALSE;) {
        if (is_file($path . $file)) {
          $mime = $mime_class->getType($path . $file);
          if (in_array($mime, $allowed_types)) {

            $thumbnail = FALSE;
            //executes ingest rules with the "preview" parameter set.
            if ($cm->execIngestRules($path . $file, $mime, TRUE) && isset($_SESSION['fedora_ingest_files']['TN']) && file_exists($_SESSION['fedora_ingest_files']['TN'])) {
              $thumbnail = $_SESSION['fedora_ingest_files']['TN'];
              unset($_SESSION['fedora_ingest_files']['TN']);
            }

            $res_array = getimagesize($path . '/' . $file);
            $res = '';
            if (is_array($res_array)) {
              $res = $res_array[0] . 'x' . $res_array[1];
            }

            $size = filesize($path . '/' . $file);
            $labels = array('kB', 'MB', 'GB', 'TB');
            $label = 'B';
            while ($size > 1024) {
              $size = $size / 1024;
              $label = array_shift($labels);
            }
            $size = round($size, 2) . ' ' . $label;

            $files[] = array('name' => $file, 'mime' => $mime, 'size' => $size, 'resolution' => $res, 'thumb' => ($thumbnail != FALSE));
            $i++;
          }
        }
      }
    }
  }
  usort($files, 'ife_filechooser_cmp');
  echo json_encode($files);
}