islandora_newspaper.module

<?php

/**
 * @file
 * Hooks and callbacks for this module.
 */

/**
 * Implements hook_menu().
 */
function islandora_newspaper_menu() {
  $ingest_issue_menu_item = array(
    'title' => 'Add Issue',
    'page callback' => 'islandora_newspaper_ingest_issue',
    'page arguments' => array(2),
    'type' => MENU_LOCAL_ACTION,
    'access callback' => 'islandora_user_access',
    'access arguments' => array(
      2, array(ISLANDORA_INGEST), array('islandora:newspaperCModel'),
    ),
    'file' => 'includes/manage_newspaper.inc',
  );
  $ingest_page_menu_item = array(
    'title' => 'Add Page',
    'page callback' => 'islandora_newspaper_ingest_page',
    'page arguments' => array(2),
    'type' => MENU_LOCAL_ACTION,
    'access callback' => 'islandora_user_access',
    'access arguments' => array(
      2, array(ISLANDORA_INGEST), array('islandora:newspaperIssueCModel'),
    ),
    'file' => 'includes/manage_issue.inc',
  );
  return array(
    'admin/islandora/solution_pack_config/newspaper' => array(
      'title' => 'Newspapers',
      'description' => 'Select viewers and configure ingest behavior.',
      'page callback' => 'drupal_get_form',
      'access arguments' => array('administer site configuration'),
      'page arguments' => array('islandora_newspaper_admin_settings_form'),
      'file' => 'includes/admin.form.inc',
      'type' => MENU_NORMAL_ITEM,
    ),
    'admin/islandora/solution_pack_config/newspaper/settings' => array(
      'title' => 'Settings',
      'description' => 'Select viewers and configure ingest behavior.',
      'page callback' => 'drupal_get_form',
      'access arguments' => array('administer site configuration'),
      'page arguments' => array('islandora_newspaper_admin_settings_form'),
      'file' => 'includes/admin.form.inc',
      'type' => MENU_DEFAULT_LOCAL_TASK,
    ),
    'admin/islandora/solution_pack_config/newspaper/missing_dates' => array(
      'title' => 'Missing dates',
      'description' => 'Issue missing a dateIssued value',
      'page_callback' => 'drupal_get_form',
      'access arguments' => array('administer site configuration'),
      'page arguments' => array('islandora_newspaper_empty_issue_date_form', NULL),
      'file' => 'includes/manage_newspaper.inc',
      'type' => MENU_LOCAL_TASK,
    ),
    'islandora/object/%islandora_object/manage/newspaper' => array(
      'title' => 'Newspaper',
      'type' => MENU_LOCAL_TASK,
      'page callback' => 'islandora_newspaper_manage_newspaper',
      'page arguments' => array(2),
      'access callback' => 'islandora_user_access',
      'access arguments' => array(
        2, array(ISLANDORA_INGEST), array('islandora:newspaperCModel'),
      ),
      'file' => 'includes/manage_newspaper.inc',
    ),
    'islandora/object/%islandora_object/manage/newspaper/ingest' => $ingest_issue_menu_item,
    'islandora/object/%islandora_object/manage/overview/issue_ingest' => $ingest_issue_menu_item,
    'islandora/object/%islandora_object/manage/issue' => array(
      'title' => 'Issue',
      'type' => MENU_LOCAL_TASK,
      'page callback' => 'islandora_paged_content_manage_pages_menu',
      'page arguments' => array(2),
      'access callback' => 'islandora_paged_content_manage_pages_access_callback',
      'access arguments' => array(2, array('islandora:newspaperIssueCModel')),
      'file path' => drupal_get_path('module', 'islandora_paged_content'),
      'file' => 'includes/manage_pages.inc',
    ),
    'islandora/object/%islandora_object/manage/issue/ingest' => $ingest_page_menu_item,
    'islandora/object/%islandora_object/manage/issue/ingest_zipped' => array(
      'title' => 'Add Zipped Pages',
      'page callback' => 'islandora_paged_content_ingest_zipped_pages',
      'page arguments' => array(2,
        array('tif', 'tiff', 'jpg', 'jpeg', 'jp2'),
        'islandora:newspaperPageCModel',
        variable_get('islandora_newspaper_ingest_derivatives', array('ocr')),
      ),
      'type' => MENU_LOCAL_ACTION,
      'access callback' => 'islandora_object_access',
      'access arguments' => array(ISLANDORA_INGEST, 2),
      'file path' => drupal_get_path('module', 'islandora_paged_content'),
      'file' => 'includes/manage_pages.inc',
    ),
    'islandora/object/%islandora_object/manage/overview/newspaper_page_ingest' => $ingest_page_menu_item,
    'islandora/object/%islandora_object/manage/newspaper_page' => array(
      'title' => 'Page',
      'type' => MENU_LOCAL_TASK,
      'page callback' => 'islandora_paged_content_manage_page_menu',
      'page arguments' => array(2),
      'access callback' => 'islandora_paged_content_manage_page_access_callback',
      'access arguments' => array(2, array('islandora:newspaperPageCModel')),
      'file path' => drupal_get_path('module', 'islandora_paged_content'),
      'file' => 'includes/manage_page.inc',
    ),
    'islandora/object/%islandora_object/issue_pages' => array(
      'title' => 'Pages',
      'type' => MENU_LOCAL_TASK,
      'page callback' => 'islandora_newspaper_issue_pages_menu',
      'page arguments' => array(2),
      'access callback' => 'islandora_newspaper_issue_page_access',
      'access arguments' => array(2),
    ),
  );
}

/**
 * Implements hook_theme().
 */
function islandora_newspaper_theme($existing, $type, $theme, $path) {
  return array(
    'islandora_newspaper' => array(
      'file' => 'theme/theme.inc',
      'template' => 'theme/islandora-newspaper',
      'pattern' => 'islandora_newspaper__',
      'variables' => array(
        'object' => NULL,
      ),
    ),
    'islandora_newspaper_issue' => array(
      'file' => 'theme/theme.inc',
      'template' => 'theme/islandora-newspaper-issue',
      'pattern' => 'islandora_newspaper_issue__',
      'variables' => array(
        'object' => NULL,
      ),
    ),
    'islandora_newspaper_issue_navigator' => array(
      'file' => 'theme/theme.inc',
      'variables' => array(
        'object' => NULL,
      ),
    ),
    'islandora_newspaper_page' => array(
      'file' => 'theme/theme.inc',
      'template' => 'theme/islandora-newspaper-page',
      'pattern' => 'islandora_newspaper_page__',
      'variables' => array('object' => NULL),
    ),
    'islandora_newspaper_page_select' => array(
      'file' => 'theme/theme.inc',
      'variables' => array('object' => NULL),
    ),
    'islandora_newspaper_page_controls' => array(
      'file' => 'theme/theme.inc',
      'template' => 'theme/islandora-newspaper-page-controls',
      'variables' => array('object' => NULL),
    ),
    'islandora_newspaper_page_img_print' => array(
      'template' => 'theme/islandora-newspaper-page-img-print',
      'variables' => array('islandora_content' => NULL),
    ),
  );
}

/**
 * Implements hook_islandora_required_objects().
 */
function islandora_newspaper_islandora_required_objects(IslandoraTuque $connection) {
  $module_path = drupal_get_path('module', 'islandora_newspaper');
  // Newspaper content model.
  $newspaper_content_model = $connection->repository->constructObject('islandora:newspaperCModel');
  $newspaper_content_model->owner = 'fedoraAdmin';
  $newspaper_content_model->label = 'Islandora Newspaper Content Model';
  $newspaper_content_model->models = 'fedora-system:ContentModel-3.0';
  // DS-COMPOSITE-MODEL datastream.
  $datastream = $newspaper_content_model->constructDatastream('DS-COMPOSITE-MODEL', 'X');
  $datastream->label = 'DS-COMPOSITE-MODEL';
  $datastream->mimetype = 'application/xml';
  $datastream->setContentFromFile("$module_path/xml/content_models/islandora_newspaper_ds_composite_model.xml", FALSE);
  $newspaper_content_model->ingestDatastream($datastream);

  // Issue content model.
  $newspaper_issue_content_model = $connection->repository->constructObject('islandora:newspaperIssueCModel');
  $newspaper_issue_content_model->owner = 'fedoraAdmin';
  $newspaper_issue_content_model->label = 'Islandora Newspaper Issue Content Model';
  $newspaper_issue_content_model->models = 'fedora-system:ContentModel-3.0';
  // DS-COMPOSITE-MODEL datastream.
  $datastream = $newspaper_issue_content_model->constructDatastream('DS-COMPOSITE-MODEL', 'X');
  $datastream->label = 'DS-COMPOSITE-MODEL';
  $datastream->mimetype = 'application/xml';
  $datastream->setContentFromFile("$module_path/xml/content_models/islandora_newspaper_ds_composite_model.xml", FALSE);
  $newspaper_issue_content_model->ingestDatastream($datastream);

  // Page content model.
  $newspaper_page_content_model = $connection->repository->constructObject('islandora:newspaperPageCModel');
  $newspaper_page_content_model->owner = 'fedoraAdmin';
  $newspaper_page_content_model->label = 'Islandora Newspaper Page Content Model';
  $newspaper_page_content_model->models = 'fedora-system:ContentModel-3.0';
  // DS-COMPOSITE-MODEL datastream.
  $datastream = $newspaper_page_content_model->constructDatastream('DS-COMPOSITE-MODEL', 'X');
  $datastream->label = 'DS-COMPOSITE-MODEL';
  $datastream->mimetype = 'application/xml';
  $paged_content_path = drupal_get_path('module', 'islandora_paged_content');
  $datastream->setContentFromFile("$paged_content_path/xml/islandora_pageCModel_ds_composite_model.xml", FALSE);
  $newspaper_page_content_model->ingestDatastream($datastream);

  // Newspaper collection.
  $newspaper_collection = $connection->repository->constructObject('islandora:newspaper_collection');
  $newspaper_collection->owner = 'fedoraAdmin';
  $newspaper_collection->label = 'Newspaper Collection';
  $newspaper_collection->models = 'islandora:collectionCModel';
  $newspaper_collection->relationships->add(FEDORA_RELS_EXT_URI, 'isMemberOfCollection', 'islandora:root');
  // Collection policy datastream.
  $datastream = $newspaper_collection->constructDatastream('COLLECTION_POLICY', 'X');
  $datastream->label = 'Collection policy';
  $datastream->mimetype = 'application/xml';
  $datastream->setContentFromFile("$module_path/xml/collection/islandora_newspaper_collection_policy.xml", FALSE);
  $newspaper_collection->ingestDatastream($datastream);
  // TN datastream.
  $datastream = $newspaper_collection->constructDatastream('TN', 'M');
  $datastream->label = 'Thumbnail';
  $datastream->mimetype = 'image/png';
  $datastream->setContentFromFile("$module_path/images/folder.png", FALSE);
  $newspaper_collection->ingestDatastream($datastream);

  return array(
    'islandora_newspaper' => array(
      'title' => 'Islandora Newspaper',
      'objects' => array(
        $newspaper_content_model,
        $newspaper_issue_content_model,
        $newspaper_page_content_model,
        $newspaper_collection,
      ),
    ),
  );
}

/**
 * Implements hook_xml_form_builder_forms().
 */
function islandora_newspaper_xml_form_builder_forms() {
  $module_path = drupal_get_path('module', 'islandora_newspaper');
  return array(
    'Newspaper' => array(
      'form_file' => "$module_path/xml/forms/islandora_newspaper_form_mods.xml",
    ),
    'Newspaper Issue' => array(
      'form_file' => "$module_path/xml/forms/islandora_newspaper_issue_form_mods.xml",
    ),
  );
}

/**
 * Implements hook_xml_form_builder_form_associations().
 */
function islandora_newspaper_xml_form_builder_form_associations() {
  return array(
    'islandora_newspaper_mods_form' => array(
      'content_model' => 'islandora:newspaperCModel',
      'form_name' => 'Newspaper',
      'dsid' => 'MODS',
      'title_field' => array('titleInfo', 'title'),
      'transform' => 'mods_to_dc.xsl',
      'template' => FALSE,
    ),
    'islandora_newspaper_issue_mods_form' => array(
      'content_model' => 'islandora:newspaperIssueCModel',
      'form_name' => 'Newspaper Issue',
      'dsid' => 'MODS',
      'title_field' => array('titleInfo', 'title'),
      'transform' => 'mods_to_dc.xsl',
      'template' => FALSE,
    ),
  );
}

/**
 * Implements hook_CMODEL_PID_islandora_view_object().
 */
function islandora_newspaper_islandora_newspapercmodel_islandora_view_object(AbstractObject $newspaper) {
  $output = theme('islandora_newspaper', array('object' => $newspaper));
  return array(
    'islandora_newspaper' => $output,
  );
}

/**
 * Implements hook_CMODEL_PID_islandora_view_object().
 */
function islandora_newspaper_islandora_newspaperissuecmodel_islandora_view_object(AbstractObject $issue) {
  $output = theme('islandora_newspaper_issue', array('object' => $issue));
  return array(
    'islandora_newspaper' => $output,
  );
}

/**
 * Implements hook_CMODEL_PID_islandora_view_object().
 */
function islandora_newspaper_islandora_newspaperpagecmodel_islandora_view_object($object, $page_number, $page_size) {
  $output = theme('islandora_newspaper_page', array('object' => $object));
  return array('islandora_newspaper' => $output);
}

/**
 * Implements hook_CMODEL_PID_islandora_ingest_steps().
 */
function islandora_newspaper_islandora_newspaperpagecmodel_islandora_ingest_steps(array $form_state) {
  $shared_storage = islandora_ingest_form_get_shared_storage($form_state);
  if (isset($shared_storage['issue'])) {
    return array(
      'islandora_newspaper_upload_pages' => array(
        'weight' => 10,
        'type' => 'form',
        'form_id' => 'islandora_paged_content_upload_page_form',
        'args' => array($shared_storage['issue']),
        'module' => 'islandora_paged_content',
        'file' => 'includes/upload_page.form.inc',
      ),
    );
  }
}

/**
 * Implements hook_CMODEL_PID_islandora_ingest_steps().
 */
function islandora_newspaper_islandora_newspaperIssueCModel_islandora_ingest_steps(array $form_state) {
  module_load_include('inc', 'islandora_paged_content', 'includes/utilities');
  if (islandora_paged_content_can_extract_from_pdf()) {
    return array(
      'islandora_newspaper_upload_pdf' => array(
        'weight' => 10,
        'type' => 'form',
        'form_id' => 'islandora_paged_content_upload_pdf_form',
        'args' => array('islandora:newspaperPageCModel'),
        'module' => 'islandora_paged_content',
        'file' => 'includes/upload_pdf.form.inc',
      ),
    );
  }
}

/**
 * Implements hook_cmodel_dsid_islandora_datastream_ingested().
 *
 * This updates the RELS-EXT such that the date issued matches the mods.
 */
function islandora_newspaper_islandora_newspaperissuecmodel_mods_islandora_datastream_ingested(AbstractObject $object, AbstractDatastream $datastream) {
  module_load_include('inc', 'islandora_newspaper', 'includes/utilities');
  $date_issued = islandora_newspaper_get_date_issued_from_mods($datastream);
  if ($date_issued) {
    islandora_newspaper_set_date_issued($object, $date_issued);
  }
}

/**
 * Implements hook_cmodel_dsid_islandora_datastream_ingested().
 *
 * This updates the RELS-EXT such that the date issued matches the mods.
 */
function islandora_newspaper_islandora_newspaperissuecmodel_mods_islandora_datastream_modified(AbstractObject $object, AbstractDatastream $datastream) {
  module_load_include('inc', 'islandora_newspaper', 'includes/utilities');
  $date_issued = islandora_newspaper_get_date_issued_from_mods($datastream);
  if ($date_issued) {
    islandora_newspaper_set_date_issued($object, $date_issued);
  }
}

/**
 * Implements hook_CMODEL_PID_islandora_solr_object_result_alter().
 *
 * Puts the Solr query terms into the object URL so that viewers can use them
 * for highlighting.
 */
function islandora_newspaper_islandora_newspaperpagecmodel_islandora_solr_object_result_alter(&$search_results, $query_processor) {
  $search_results['object_url_params']['solr'] = array(
    'query' => $query_processor->solrQuery,
    'params' => $query_processor->solrParams,
  );

  module_load_include('inc', 'islandora', 'includes/solution_packs');
  if (islandora_get_viewer_id('islandora_newspaper_issue_viewers') == 'islandora_internet_archive_bookreader') {
    // Grab the names of the appropriate solr fields from the db.
    $parent_issue_field_name = variable_get('islandora_newspaper_parent_issue_solr_field', 'RELS_EXT_isMemberOf_uri_ms');
    $page_number_field_name = variable_get('islandora_paged_content_page_number_solr_field', 'RELS_EXT_isSequenceNumber_literal_ms');
    // If:
    // there's an object url AND
    // there's a solr doc AND
    // the solr doc contains the parent issue AND
    // the solr doc contains the page number...
    if (isset($search_results['object_url']) &&
        isset($search_results['solr_doc']) &&
        isset($search_results['solr_doc'][$parent_issue_field_name]) &&
        count($search_results['solr_doc'][$parent_issue_field_name]) &&
        isset($search_results['solr_doc'][$page_number_field_name]) &&
        count($search_results['solr_doc'][$page_number_field_name])) {
      // Replace the result url with that of the parent issue and add the page
      // number as a fragment.
      $issue_pid = preg_replace('/info\:fedora\//', '', $search_results['solr_doc'][$parent_issue_field_name][0], 1);
      $page_number = $search_results['solr_doc'][$page_number_field_name][0];

      if (islandora_object_access(ISLANDORA_VIEW_OBJECTS, islandora_object_load($issue_pid))) {
        $search_results['object_url'] = "islandora/object/$issue_pid";
        $search_results['object_url_fragment'] = "page/$page_number/mode/1up";

        // XXX: Won't handle fielded searches nicely... then again, if our
        // highlighting field is not the one being search on, this makes sense?
        if ($query_processor->solrDefType == 'dismax' || $query_processor->solrDefType == 'edismax') {
          $search_results['object_url_fragment'] .= "/search/" . rawurlencode($query_processor->solrQuery);
        }
      }
    }
  }
}

/**
 * Implements hook_process_theme().
 */
function islandora_newspaper_preprocess_islandora_object_print(array &$variables) {
  $object = $variables['object'];
  if (in_array('islandora:newspaperPageCModel', $object->models)) {
    $url = url("islandora/object/{$object->id}", array('absolute' => TRUE));
    $variables['content']['link'] = array(
      '#weight' => -10,
      '#markup' => t('Persistent link: !link', array('!link' => l($url, $url))),
    );
  }
}

/**
 * Implements hook_process_theme().
 */
function islandora_newspaper_process_islandora_object_print(array &$variables) {
  $object = $variables['object'];
  if (in_array('islandora:newspaperPageCModel', $object->models)) {
    $clip = isset($variables['clip']) ? $variables['clip'] : NULL;
    $variables['content']['buttons'] = array(
      '#access' => isset($clip),
      '#prefix' => '<div>',
      '#suffix' => '</div></br>',
      '#weight' => -5,
      'print' => array(
        '#prefix' => '<strong>',
        '#markup' => l(t('Print'), 'javascript:window.print();', array('external' => TRUE)),
        '#suffix' => '</strong>',
        '#weight' => -5,
      ),
      '0' => array(
        '#markup' => ' | ',
        '#weight' => -5,
      ),
      'download_clip' => array(
        '#prefix' => '<strong>',
        '#markup' => l(t('Download Image'), "islandora/object/{$object->id}/download_clip", array(
                     'query' => array('clip' => $clip))),
        '#suffix' => '</strong>',
        '#weight' => -5,
      ),
    );
  }
}

/**
 * Implements hook_islandora_derivative().
 */
function islandora_newspaper_islandora_newspaperissuecmodel_islandora_derivative() {
  module_load_include('inc', 'islandora_paged_content', 'includes/utilities');
  return islandora_paged_content_paged_object_derivatives('islandora_newspaper');
}

/**
 * Implements hook_islandora_derivative().
 */
function islandora_newspaper_islandora_newspaperpagecmodel_islandora_derivative() {
  module_load_include('inc', 'islandora_paged_content', 'includes/utilities');
  return islandora_paged_content_page_derivatives('islandora_newspaper');
}

/**
 * Implements hook_form_islandora_object_properties_form_alter().
 */
function islandora_newspaper_form_islandora_object_properties_form_alter(array &$form, array &$form_state) {
  $object = $form_state['object'];
  if (in_array('islandora:newspaperIssueCModel', $object->models)) {
    $form['delete']['#value'] = t('Delete Issue');
  }

  if (in_array('islandora:newspaperCModel', $object->models)) {
    $form['delete']['#value'] = t('Delete Newspaper');
  }
}

/**
 * Implements hook_form_islandora_object_properties_form_alter().
 */
function islandora_newspaper_form_islandora_delete_object_form_alter(array &$form, array &$form_state) {
  $object = $form_state['object'];
  if (in_array('islandora:newspaperIssueCModel', $object->models)) {
    $form['description']['#markup'] = t('This will remove the issue object and all related page objects. This action cannot be undone.');
    $form['#submit'] = array('islandora_newspaper_islandora_delete_issue_form_delete_pages_submit');
  }

  if (in_array('islandora:newspaperCModel', $object->models)) {
    $form['description']['#markup'] = t('This will remove the newspaper object, all issue objects and all related page objects. This action cannot be undone.');
    $form['#submit'] = array('islandora_newspaper_islandora_delete_newspaper_form_delete_pages_submit');
  }
}

/**
 * Delete all the page objects related to the issue object being deleted.
 *
 * @param array $form
 *   The Drupal form.
 * @param array $form_state
 *   The Drupal form state.
 */
function islandora_newspaper_islandora_delete_issue_form_delete_pages_submit(array $form, array &$form_state) {
  module_load_include('inc', 'islandora_paged_content', 'includes/batch');
  module_load_include('inc', 'islandora_paged_content', 'includes/utilities');
  module_load_include('inc', 'islandora', 'includes/datastream');
  module_load_include('inc', 'islandora', 'includes/utilities');

  $object = $form_state['object'];
  $get_pid = function($o) {
    return $o['pid'];
  };
  $pages = array_values(array_map($get_pid, islandora_paged_content_get_pages($object)));
  $batch_delete = islandora_paged_content_delete_pages_batch($object, $pages);
  $batch_delete['operations'][] = array('islandora_paged_content_delete_parent_object_operation', array($object->id));
  batch_set($batch_delete);
  $parents = islandora_get_parents_from_rels_ext($object);
  $parent = array_pop($parents);
  $form_state['redirect'] = isset($parent) ? "islandora/object/{$parent->id}" : 'islandora';
}

/**
 * Delete all the issue objects related to the newspaper object being deleted.
 *
 * @param array $form
 *   The Drupal form.
 * @param array $form_state
 *   The Drupal form state.
 */
function islandora_newspaper_islandora_delete_newspaper_form_delete_pages_submit(array $form, array &$form_state) {
  module_load_include('inc', 'islandora', 'includes/utilities');
  module_load_include('inc', 'islandora_newspaper', 'includes/batch');

  $object = $form_state['object'];
  batch_set(islandora_newspaper_delete_newspaper_batch($object));
  $parents = islandora_get_parents_from_rels_ext($object);
  $parent = array_pop($parents);
  $form_state['redirect'] = isset($parent) ? "islandora/object/{$parent->id}" : 'islandora';
}

/**
 * Renders the Pages local menu task.
 *
 * @param AbstractObject $object
 *   The issue object to fetch the pages from.
 *
 * @return string
 *   The HTML repersentation of the given issus pages.
 */
function islandora_newspaper_issue_pages_menu(AbstractObject $object) {
  module_load_include('inc', 'islandora', 'includes/breadcrumb');
  drupal_set_breadcrumb(islandora_get_breadcrumbs($object));
  module_load_include('inc', 'islandora_paged_content', 'includes/utilities');
  $pages = islandora_paged_content_get_pages($object);
  return theme('islandora_objects', array('objects' => array_keys($pages)));
}

/**
 * Check weather the Page tab should be shown.
 *
 * @param AbstractObject $object
 *   Newspaper object.
 *
 * @return bool
 *   Reture true if Page tab should shown.
 */
function islandora_newspaper_issue_page_access(AbstractObject $object) {
  module_load_include('inc', 'islandora', 'includes/solution_packs');
  $access = islandora_user_access($object, array(ISLANDORA_VIEW_OBJECTS), array('islandora:newspaperIssueCModel'));
  $viewer_id = islandora_get_viewer_id('islandora_newspaper_issue_viewers');
  if ($viewer_id == 'none') {
    $access = FALSE;
  }
  return $access;
}

/**
 * Implements hook_islandora_xacml_editor_child_query().
 */
function islandora_newspaper_islandora_newspaperIssueCModel_islandora_xacml_editor_child_query(AbstractObject $object) {
  $pages_query = <<<EOQ
SELECT ?object from <#ri> WHERE
{
  ?object <fedora-rels-ext:isMemberOf> <info:fedora/{$object->id}>
}
EOQ;
  return array(
    'newspaper_pages' => array(
      'type' => 'sparql',
      'query' => $pages_query,
      'description' => t('All pages of this issue (existing and new).'),
      'recurse' => TRUE,
    ),
  );
}

/**
 * Implements hook_islandora_xacml_editor_child_query().
 */
function islandora_newspaper_islandora_newspaperCModel_islandora_xacml_editor_child_query(AbstractObject $object) {
  $issues_query = <<<EOQ
SELECT ?object from <#ri> WHERE
{
  ?object <fedora-rels-ext:isMemberOf> <info:fedora/{$object->id}>
}
EOQ;
  return array(
    'newspaper_issues' => array(
      'type' => 'sparql',
      'query' => $issues_query,
      'description' => t('All newspaper issues and their pages (existing and new).'),
      'recurse' => TRUE,
    ),
  );
}

/**
 * Implements hook_islandora_view_print_object().
 */
function islandora_newspaper_islandora_view_print_object($object) {
  if (in_array('islandora:newspaperPageCModel', $object->models)) {
    // Theme image separately.
    $islandora_content = theme('image', array(
        'title' => $object->label,
        'path' => url("islandora/object/{$object->id}/datastream/JPG/view"),
    ));
    return theme('islandora_newspaper_page_img_print', array(
        'islandora_content' => $islandora_content,
    ));
  }
}

/**
 * Implements hook_islandora_paged_content_content_model_registry().
 */
function islandora_newspaper_islandora_paged_content_content_model_registry() {
  return array(
    'islandora:newspaperIssueCModel' => array(
      'parents' => array(
        'islandora:newspaperCModel' => 'isMemberOf',
      ),
      'children' => array(
        'islandora:newspaperPageCModel' => array(),
      ),
    ),
  );
}