lib/plugins/styling/action.php

   1 <?php
   2
   3 use dokuwiki\Extension\ActionPlugin;
   4 use dokuwiki\Extension\EventHandler;
   5 use dokuwiki\Extension\Event;
   6
   7 /**
   8  * DokuWiki Plugin styling (Action Component)
   9  *
  10  * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
  11  * @author  Andreas Gohr <andi@splitbrain.org>
  12  */
  13 class action_plugin_styling extends ActionPlugin
  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     {
  23         $controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'handleHeader');
  24     }
  25
  26     /**
  27      * Adds the preview parameter to the stylesheet loading in non-js mode
  28      *
  29      * @param Event $event event object by reference
  30      * @param mixed $param [the parameters passed as fifth argument to register_hook() when this
  31      *                      handler was registered]
  32      * @return void
  33      */
  34     public function handleHeader(Event &$event, $param)
  35     {
  36         global $ACT;
  37         global $INPUT;
  38         if ($ACT != 'admin' || $INPUT->str('page') != 'styling') return;
  39         /** @var admin_plugin_styling $admin */
  40         $admin = plugin_load('admin', 'styling');
  41         if (!$admin->isAccessibleByCurrentUser()) return;
  42
  43         // set preview
  44         $len = count($event->data['link']);
  45         for ($i = 0; $i < $len; $i++) {
  46             if (
  47                 $event->data['link'][$i]['rel'] == 'stylesheet' &&
  48                 strpos($event->data['link'][$i]['href'], 'lib/exe/css.php') !== false
  49             ) {
  50                 $event->data['link'][$i]['href'] .= '&preview=1&tseed=' . time();
  51             }
  52         }
  53     }
  54 }
  55
  56 // vim:ts=4:sw=4:et: