PKPCatalogHandler.inc.php

<?php
 
import('classes.handler.Handler');
 
// import UI base classes
import('lib.pkp.classes.linkAction.LinkAction');
import('lib.pkp.classes.core.JSONMessage');
 
class PKPCatalogHandler extends Handler {
   //
   // Overridden methods from Handler
   //
   function authorize($request, &$args, $roleAssignments) {
      import('lib.pkp.classes.security.authorization.ContextRequiredPolicy');
      $this->addPolicy(new ContextRequiredPolicy($request));
      return parent::authorize($request, $args, $roleAssignments);
   }
 
   function category($args, $request) {
      $page = isset($args[1]) ? (int) $args[1] : 1;
      $templateMgr = TemplateManager::getManager($request);
      $context = $request->getContext();
 
      // Get the category
      $categoryDao = DAORegistry::getDAO('CategoryDAO'); /* @var $categoryDao CategoryDAO */
      $category = $categoryDao->getByPath($args[0], $context->getId());
      if (!$category) $this->getDispatcher()->handle404();
 
      $this->setupTemplate($request);
      import('lib.pkp.classes.submission.PKPSubmission'); // STATUS_ constants
 
      $orderOption = $category->getSortOption() ? $category->getSortOption() : ORDERBY_DATE_PUBLISHED . '-' . SORT_DIRECTION_DESC;
      list($orderBy, $orderDir) = explode('-', $orderOption);
 
      $count = $context->getData('itemsPerPage') ? $context->getData('itemsPerPage') : Config::getVar('interface', 'items_per_page');
      $offset = $page > 1 ? ($page - 1) * $count : 0;
 
      import('classes.core.Services');
      $params = array(
         'contextId' => $context->getId(),
         'categoryIds' => $category->getId(),
         'orderByFeatured' => true,
         'orderBy' => $orderBy,
         'orderDirection' => $orderDir == SORT_DIRECTION_ASC ? 'ASC' : 'DESC',
         'count' => $count,
         'offset' => $offset,
         'status' => STATUS_PUBLISHED,
      );
      $submissionsIterator = Services::get('submission')->getMany($params);
      $total = Services::get('submission')->getMax($params);
 
      // Provide the parent category and a list of subcategories
      $parentCategory = $categoryDao->getById($category->getParentId());
      $subcategories = $categoryDao->getByParentId($category->getId());
 
      $this->_setupPaginationTemplate($request, count($submissionsIterator), $page, $count, $offset, $total);
 
      $templateMgr->assign(array(
         'category' => $category,
         'parentCategory' => $parentCategory,
         'subcategories' => $subcategories,
         'publishedSubmissions' => iterator_to_array($submissionsIterator),
      ));
 
      return $templateMgr->display('frontend/pages/catalogCategory.tpl');
   }
 
   function fullSize($args, $request) {
      switch ($request->getUserVar('type')) {
         case 'category':
            $context = $request->getContext();
            $categoryDao = DAORegistry::getDAO('CategoryDAO'); /* @var $categoryDao CategoryDAO */
            $category = $categoryDao->getById($request->getUserVar('id'), $context->getId());
            if (!$category) $this->getDispatcher()->handle404();
            $imageInfo = $category->getImage();
            import('lib.pkp.classes.file.ContextFileManager');
            $contextFileManager = new ContextFileManager($context->getId());
            $contextFileManager->downloadByPath($contextFileManager->getBasePath() . '/categories/' . $imageInfo['name'], null, true);
            break;
         default:
            fatalError('invalid type specified');
      }
   }
 
   function thumbnail($args, $request) {
      switch ($request->getUserVar('type')) {
         case 'category':
            $context = $request->getContext();
            $categoryDao = DAORegistry::getDAO('CategoryDAO'); /* @var $categoryDao CategoryDAO */
            $category = $categoryDao->getById($request->getUserVar('id'), $context->getId());
            if (!$category) $this->getDispatcher()->handle404();
            $imageInfo = $category->getImage();
            import('lib.pkp.classes.file.ContextFileManager');
            $contextFileManager = new ContextFileManager($context->getId());
            $contextFileManager->downloadByPath($contextFileManager->getBasePath() . '/categories/' . $imageInfo['thumbnailName'], null, true);
            break;
         default:
            fatalError('invalid type specified');
      }
   }
 
   function setupTemplate($request) {
      AppLocale::requireComponents(LOCALE_COMPONENT_PKP_SUBMISSION, LOCALE_COMPONENT_APP_SUBMISSION);
      parent::setupTemplate($request);
   }
 
   protected function _setupPaginationTemplate($request, $submissionsCount, $page, $count, $offset, $total) {
      $showingStart = $offset + 1;
      $showingEnd = min($offset + $count, $offset + $submissionsCount);
      $nextPage = $total > $showingEnd ? $page + 1 : null;
      $prevPage = $showingStart > 1 ? $page - 1 : null;
 
      $templateMgr = TemplateManager::getManager($request);
      $templateMgr->assign(array(
         'showingStart' => $showingStart,
         'showingEnd' => $showingEnd,
         'total' => $total,
         'nextPage' => $nextPage,
         'prevPage' => $prevPage,
      ));
   }
}