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   1  <?php
   2  /**
   3   * DokuWiki Plugin styling (Action Component)
   4   *
   5   * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
   6   * @author  Andreas Gohr <andi@splitbrain.org>
   7   */
   8  class action_plugin_styling extends DokuWiki_Action_Plugin
   9  {
  10  
  11      /**
  12       * Registers a callback functions
  13       *
  14       * @param Doku_Event_Handler $controller DokuWiki's event controller object
  15       * @return void
  16       */
  17      public function register(Doku_Event_Handler $controller)
  18      {
  19          $controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'handleHeader');
  20      }
  21  
  22      /**
  23       * Adds the preview parameter to the stylesheet loading in non-js mode
  24       *
  25       * @param Doku_Event $event  event object by reference
  26       * @param mixed      $param  [the parameters passed as fifth argument to register_hook() when this
  27       *                           handler was registered]
  28       * @return void
  29       */
  30      public function handleHeader(Doku_Event &$event, $param)
  31      {
  32          global $ACT;
  33          global $INPUT;
  34          if ($ACT != 'admin' || $INPUT->str('page') != 'styling') return;
  35          /** @var admin_plugin_styling $admin */
  36          $admin = plugin_load('admin', 'styling');
  37          if (!$admin->isAccessibleByCurrentUser()) return;
  38  
  39          // set preview
  40          $len = count($event->data['link']);
  41          for ($i = 0; $i < $len; $i++) {
  42              if ($event->data['link'][$i]['rel'] == 'stylesheet' &&
  43                  strpos($event->data['link'][$i]['href'], 'lib/exe/css.php') !== false
  44              ) {
  45                  $event->data['link'][$i]['href'] .= '&preview=1&tseed='.time();
  46              }
  47          }
  48      }
  49  }
  50  
  51  // vim:ts=4:sw=4:et: