1<?php 2 3use dokuwiki\Extension\EventHandler; 4use dokuwiki\Extension\Event; 5 6/** 7 * Action Component for the Monitor Plugin 8 * 9 * @license GPL 3 (http://www.gnu.org/licenses/gpl.html) 10 * @author Sascha Leib <sascha.leib(at)kolmio.com> 11 */ 12 13class action_plugin_monitor extends DokuWiki_Action_Plugin { 14 15 /** 16 * Registers a callback functions 17 * 18 * @param EventHandler $controller DokuWiki's event controller object 19 * @return void 20 */ 21 public function register(EventHandler $controller) { 22 $controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'insertHeader'); 23 } 24 25 /** 26 * Inserts tracking code to the page header 27 * 28 * @param Event $event event object by reference 29 * @return void 30 */ 31 public function insertHeader(Event $event, $param) { 32 33 global $INFO; 34 35 // is there a user logged in? 36 $username = ( !empty($INFO['userinfo']) && !empty($INFO['userinfo']['name']) 37 ? $INFO['userinfo']['name'] : null); 38 39 // build the tracker code: 40 $code = NL . DOKU_TAB . "document._monitor = {'t0': Date.now()};" . NL; 41 if ($username) { 42 $code .= DOKU_TAB . 'document._monitor.user = "' . $username . '";'. NL; 43 } 44 $code .= DOKU_TAB . "addEventListener('load',function(){" . NL; 45 46 $code .= DOKU_TAB . DOKU_TAB . "const e=document.createElement('script');" . NL; 47 $code .= DOKU_TAB . DOKU_TAB . "e.async=true;e.defer=true;" . NL; 48 $code .= DOKU_TAB . DOKU_TAB . "e.src='".DOKU_BASE."lib/plugins/monitor/client.js';" . NL; 49 $code .= DOKU_TAB . DOKU_TAB . "document.getElementsByTagName('head')[0].appendChild(e);" . NL; 50 $code .= DOKU_TAB . "});" . NL; 51 52 $event->data['script'][] = [ 53 '_data' => $code 54 ]; 55 } 56}