PdfJsViewerPlugin.inc.php

<?php
 
import('lib.pkp.classes.plugins.GenericPlugin');
 
class PdfJsViewerPlugin extends GenericPlugin {
   function register($category, $path, $mainContextId = null) {
      if (parent::register($category, $path, $mainContextId)) {
         if ($this->getEnabled($mainContextId)) {
            HookRegistry::register('CatalogBookHandler::view', array($this, 'viewCallback'), HOOK_SEQUENCE_LATE);
            HookRegistry::register('CatalogBookHandler::download', array($this, 'downloadCallback'), HOOK_SEQUENCE_LATE);
         }
         return true;
      }
      return false;
   }
 
   function getContextSpecificPluginSettingsFile() {
      return $this->getPluginPath() . '/settings.xml';
   }
 
   function getDisplayName() {
      return __('plugins.generic.pdfJsViewer.displayName');
   }
 
   function getDescription() {
      return __('plugins.generic.pdfJsViewer.description');
   }
 
   function viewCallback($hookName, $args) {
      $submission =& $args[1];
      $publicationFormat =& $args[2];
      $submissionFile =& $args[3];
 
      if ($submissionFile->getFileType() == 'application/pdf') {
         foreach ($submission->getData('publications') as $publication) {
            if ($publication->getId() === $publicationFormat->getData('publicationId')) {
               $filePublication = $publication;
               break;
            }
         }
         $request = Application::get()->getRequest();
         $router = $request->getRouter();
         $dispatcher = $request->getDispatcher();
         $templateMgr = TemplateManager::getManager($request);
         $templateMgr->assign(array(
            'pluginUrl' => $request->getBaseUrl() . DIRECTORY_SEPARATOR . $this->getPluginPath(),
            'isLatestPublication' => $submission->getData('currentPublicationId') === $publicationFormat->getData('publicationId'),
            'filePublication' => $filePublication,
         ));
 
         $templateMgr->display($this->getTemplateResource('display.tpl'));
         return true;
      }
 
      return false;
   }
 
   function downloadCallback($hookName, $params) {
      $submission =& $params[1];
      $publicationFormat =& $params[2];
      $submissionFile =& $params[3];
      $inline =& $params[4];
 
      $request = Application::get()->getRequest();
      if ($submissionFile->getFileType() == 'application/pdf' && $request->getUserVar('inline')) {
         // Turn on the inline flag to ensure that the content
         // disposition header doesn't foil the PDF embedding
         // plugin.
         $inline = true;
      }
 
      // Return to regular handling
      return false;
   }
 
   private function _getPluginUrl($request) {
      return $request->getBaseUrl() . '/' . $this->getPluginPath();
   }
}