islandora/fedora_repository/fedora_repository.module

<?php

/*
 * @file fedora_repository.module
 * 
 * Copyright (c) 2012 Paul Pound. 
 * 
 * This file is part of CMR.
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with the program.  If not, see <http ://www.gnu.org/licenses/>.
 */



/**
 * called by theme function and populates a render array for a table view.
 * @param array $metadata
 * @param array $render_array
 * @return array 
 */
function fedora_repository_show_metadata($metadata, &$render_array) {
  $header = array(t('Label'), t('Value'));
  $table_attributes = array('class' => array('cmr_metadata'));
  $rows = array();
  foreach ($metadata as $key => $value) {
    if (isset($value) && is_array($value)) {
      $item_list = array('#items' => $value, '#theme' => 'item_list');
      $rows[] = array($key, array('data' => $item_list));
    }
    else {
      $rows[] = array($key, $value);
    }
  }
  $render_array['metadata'] = array('#header' => $header, '#theme' => 'table', '#rows' => $rows, '#attributes' => $table_attributes);
  return $render_array;
}

/**
 * returns a drupal render array as a html string
 * @param array $variables
 * @return  string
 */
function theme_fedora_repository_view_object($variables) {
  $object = $variables['object'];
  $metadata = $object->metadata;
  $render_array = array('title' => array(
      '#type' => 'markup',
      '#markup' => '<h2>' . $object->label . '</h2>',
      ));
  fedora_repository_show_metadata($metadata, $render_array);
  fedora_repository_list_datastreams($object, $render_array);
  return drupal_render($render_array);
}

/**
 *
 * @global object $user
 * @param ActiveMongo $object
 * @param string $render_array
 * @return type 
 */
function fedora_repository_list_datastreams($object, &$render_array) {
  module_load_include('inc', 'CmrAPIDrupal', 'cmr');
  global $user;
  $api = new CmrAPIDrupal($user);
  $datastreams = $object->datastreams;
  if (!isset($datastreams)) {
    return $render_array;
  }
  foreach ($datastreams as $datastream) {
    foreach ($datastream as $key => $value) {
      if ($key == 'cmr:data') {
        $d = new CmrDatastream();
        $d->find($value);
        if (isset($d)) {
         // $id = $d->getID()->id;
          $render_array[(string)$d->getID()] = array('type' => 'markup', '#markup' => '<div class = "cmr-external-link">'.l($d->label, $d->path,array('html'=>TRUE)).'</div>');
        }
      }
      if($key = 'cmr:metaData'){
        $d = new CmrDatastream();
        $d->find($value);
        if(isset($d)){
          //@TODO: do something here
        }
      }
    }
  }
}

/**
 * Theme registry function
 * @return array
 */
function fedora_repository_theme() {
  return array(
    'fedora_repository_view_objects' => array(
      'template' => 'fedora-repository-view-objects',
      'variables' => array('objects' => NULL),
    ),
    'fedora_repository_view_object' => array(
      'varibles' => array('object'),
    )
  );
}

/**
 * tells the main module what types of objects we support.
 * @return array 
 */
function fedora_repository_get_types() {
  return array('islandora:pdfCModel');
}

/**
 * this modules implentation of view_object will handle objects of type islandora:pdfCmodel as registered in its return types
 *   Other modules would handle objects
 * of other types.
 * @param FedoraObject $object
 * @param object $user
 * @param string $page_number
 * @param string $page_size
 * @return string
 *    themed html
 */
function fedora_repository_view_object($object, $user, $page_number, $page_size) {
  //global $user;
  if ($object->type != 'islandora:pdfCModel' && $object->type != 'cmr:basicObject') {
    return NULL;
  }
  $output = theme('fedora_repository_view_object', array('object' => $object));
  $api = new CmrAPIDrupal($user);
  try {
    $results = $api->listObjectsByRelationship($object, 'cmr:isPartOf', $user, array('offset' => $page_number, 'limit' => $page_size));
  } catch (CmrRelationshipException $e) {
    drupal_set_message(t('error executing list objects query, %s', array('%s' => $e)));
  }
  pager_default_initialize($results['count'], $page_size);
  $pager = theme('pager', array('quantity' => $results['count']));
  $output .= $pager;
  if ($results['count'] > 0) {
    $output .= theme('fedora_repository_view_objects', $results);
  }
  $output .= $pager;
  return $output;
}

?>