PiwikPlugin.inc.php

<?php
 
import('lib.pkp.classes.plugins.GenericPlugin');
 
class PiwikPlugin extends GenericPlugin {
   function register($category, $path, $mainContextId = null) {
      $success = parent::register($category, $path, $mainContextId);
      if (!Config::getVar('general', 'installed') || defined('RUNNING_UPGRADE')) return true;
      if ($success && $this->getEnabled()) {
         // Insert Piwik page tag to footer
         HookRegistry::register('TemplateManager::display', array($this, 'registerScript'));
         $this->_registerTemplateResource();
      }
      return $success;
   }
 
   function getDisplayName() {
      return __('plugins.generic.piwik.displayName');
   }
 
   function getDescription() {
      return __('plugins.generic.piwik.description');
   }
 
   function getActions($request, $verb) {
      $router = $request->getRouter();
      import('lib.pkp.classes.linkAction.request.AjaxModal');
      return array_merge(
            $this->getEnabled()?array(
                  new LinkAction(
                        'settings',
                        new AjaxModal(
                              $router->url($request, null, null, 'manage', null, array('verb' => 'settings', 'plugin' => $this->getName(), 'category' => 'generic')),
                              $this->getDisplayName()
                        ),
                        __('manager.plugins.settings'),
                        null
                  ),
            ):array(),
            parent::getActions($request, $verb)
      );
   }
 
   function manage($args, $request) {
      switch ($request->getUserVar('verb')) {
         case 'settings':
            $context = $request->getContext();
 
            AppLocale::requireComponents(LOCALE_COMPONENT_APP_COMMON,  LOCALE_COMPONENT_PKP_MANAGER);
            $templateMgr = TemplateManager::getManager($request);
 
            $this->import('PiwikSettingsForm');
            $form = new PiwikSettingsForm($this, $context->getId());
 
            if ($request->getUserVar('save')) {
               $form->readInputData();
               if ($form->validate()) {
                  $form->execute();
                  return new JSONMessage(true);
               }
            } else {
               $form->initData();
            }
            return new JSONMessage(true, $form->fetch($request));
      }
      return parent::manage($args, $request);
   }
 
   function registerScript($hookName, $params) {
      $request = $this->getRequest();
      $context = $request->getContext();
      if (!$context) return false;
      $router = $request->getRouter();
      if (!is_a($router, 'PKPPageRouter')) return false;
 
      $piwikSiteId = $this->getSetting($context->getId(), 'piwikSiteId');
      $piwikUrl = $this->getSetting($context->getId(), 'piwikUrl');
      $piwikRelativeUrl = preg_replace('/^https?:/', '', rtrim($piwikUrl, '/')) . '/';
      if (empty($piwikSiteId) || empty($piwikUrl)) return false;
 
      $contextPath = $context->getPath();
 
      $piwikCode = <<< EOF
         var _paq = _paq || [];
           _paq.push(['trackPageView']);
           _paq.push(['enableLinkTracking']);
           (function() {
             var u="{$piwikRelativeUrl}";
             _paq.push(['setTrackerUrl', u+'piwik.php']);
             _paq.push(['setSiteId', {$piwikSiteId}]);
             _paq.push(['setDocumentTitle', "{$contextPath}"]);
             var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
             g.type='text/javascript'; g.async=true; g.defer=true; g.src=u+'piwik.js'; s.parentNode.insertBefore(g,s);
           })();
EOF;
 
      $templateMgr = TemplateManager::getManager($request);
      $templateMgr->addJavaScript(
            'piwik',
            $piwikCode,
            array(
               'priority' => STYLE_SEQUENCE_LAST,
               'inline'   => true,
            )
      );
 
      return false;
   }
 
}