ADRBasic.inc

<?php

// $Id$

/**
 * @file
 *
 * Basic viewer for Colorado Alliance style Fedora Objects.
 */

/**
 * A viewer for Fedora Objects
 */
class ADRBasic {

  /**
   * The PID of the object to be viewed/managed.
   *
   * @var string
   */
  protected $pid;

  /**
   * Create a view for describing/managing an object.
   *
   * @param string $pid
   */
  public function __construct($pid) {
    module_load_include('inc', 'fedora_repository', 'api/fedora_item');
    $this->pid = $pid;
  }

  /**
   * Can we show the manage panel.
   *
   * Checks user permissions to decide if the user can manage this collection.
   *
   * @return boolean
   */
  private function canShowManagePanel() {
    module_load_include('inc','islandora_xacml_api','Xacml');
    module_load_include('inc','islandora_xacml_api','XacmlException');
    global $user;

    if ($user->uid == 1 || in_array('administrator', $user->roles)) {
      $show = TRUE;
    }
    else {
      try {
        $xacml = Xacml::constructFromPid($this->pid);
        if($xacml->managementRule->isPopulated()) {
          $show = $xacml->managementRule->hasPermission($user->name, $user->roles);
        }
        else {
          $show = FALSE;
        }
      }
      catch (XacmlException $e) {
        $show = FALSE;
      }
    }

    $show &= user_access('purge objects and datastreams')
    || user_access('add fedora datastreams')
    || user_access('edit fedora meta data');

    return $show;
  }

  /**
   *
   */
  private function includeRequiredScripts() {
    $path = drupal_get_path('module', 'adr_basic_viewer');
    module_load_include('module', 'ext', 'ext');
    drupal_add_css("$path/stylesheets/Clear.css", 'theme', 'all');
    ext_load_library();
    drupal_add_css("$path/stylesheets/ADRBasic.css", 'theme', 'all');
    module_load_include('inc', 'adr_basic_viewer', 'ADRBasicViewer');

    ADRBasicViewer::includeRequiredJSForViewers($this->pid);

    $data_stores = array(
      'Datastreams.js',
      'ObjectProperties.js',
      'OverviewDatastreams.js',
      'ControlGroups.js',
      'MIMETypes.js',
      'State.js',
    );

    $custom_components = array(
      'FilesXTemplate.js',
      'FileUploadField.ui.js',
      'FileUploadField.js',
    );

    $main_viewer = array(
      'ADRBasicViewer.ui.js',
      'ADRBasicViewer.js',
      'OverviewPanel.ui.js',
      'OverviewPanel.js',
      'DescriptionPanel.ui.js',
      'DescriptionPanel.js',
      'Files.ui.js',
      'Files.js',
      'ViewerPanel.ui.js',
      'ViewerPanel.js',
    );

    $manage_panel = array(
      'ManagePanel.ui.js',
      'ManagePanel.js',
    );

    $manage_windows = array(
      'AddFileWindow.ui.js',
      'AddFileWindow.js',
      //'ReplaceFileWindow.ui.js',
      //'ReplaceFileWindow.js',
      'EditObjectWindow.ui.js',
      'EditObjectWindow.js',
    );

    $canEditObjects = user_access("edit fedora meta data");
    $canEditPermissions = user_access("Edit XACML Policies");
    $canDeleteObject = user_access("purge objects and datastreams");
    $canAddStream = user_access("add fedora datastreams");
    $canEditStream = user_access("edit fedora meta data");
    $canDeleteStream = user_access("purge objects and datastreams");

    $permissions_block =
        "UserObjectPermissions.manage_canEditObjects=" . ($canEditObjects ? "true" : "false") . ";" .
        "UserObjectPermissions.manage_canEditPermissions=" . ($canEditPermissions ? "true" : "false") . ";" .
        "UserObjectPermissions.manage_canDeleteObject=" . ($canDeleteObject ? "true" : "false") . ";" .
        "UserObjectPermissions.datastream_canAddStream=" . ($canAddStream ? "true" : "false") . ";" .
        "UserObjectPermissions.datastream_canEditStream=" . ($canEditStream ? "true" : "false") . ";" .
        "UserObjectPermissions.datastream_canDeleteStream=" . ($canDeleteStream ? "true" : "false") . ";";
    drupal_add_js($permissions_block, 'inline');

    drupal_add_js("$path/js/IncludeFirst.js");
    $this->includeScripts($data_stores, $path);
    $this->includeScripts($custom_components, $path);
    $this->includeScripts($main_viewer, $path);

    if($this->canShowManagePanel()){
      $this->includeScripts($manage_panel, $path);
      $this->includeScripts($manage_windows, $path);
    }

    drupal_add_js("$path/js/ADRBasic.js");
    drupal_add_js("$path/js/resize.js");
  }

  /**
   *
   * @param array $scripts
   * @param string $path
   */
  private function includeScripts($scripts, $path) {
    foreach ($scripts as $file) {
      drupal_add_js("$path/js/$file");
    }
  }

  /**
   *
   */
  public function render() {
    module_load_include('inc', 'fedora_repository', 'api/fedora_item');
    $item = new Fedora_Item($this->pid);
    $models = (isset($item->objectProfile->objModels->model) ? $item->objectProfile->objModels->model : array());
    if(!in_array('info:fedora/islandora:iaBookCModel', $models) && !in_array('info:fedora/islandora:bookCModel', $models)) {
      $this->includeRequiredScripts(); // Javascript all the way!
    }
  }

}