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   1  <?php
   2  /* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   3  /*
   4  # ***** BEGIN LICENSE BLOCK *****
   5  # This file is part of Plume CMS, a website management application.
   6  # Copyright (C) 2001-2005 Loic d'Anterroches and contributors.
   7  #
   8  # Plume CMS is free software; you can redistribute it and/or modify
   9  # it under the terms of the GNU General Public License as published by
  10  # the Free Software Foundation; either version 2 of the License, or
  11  # (at your option) any later version.
  12  #
  13  # Plume CMS is distributed in the hope that it will be useful,
  14  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  # GNU General Public License for more details.
  17  #
  18  # You should have received a copy of the GNU General Public License
  19  # along with this program; if not, write to the Free Software
  20  # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  #
  22  # ***** END LICENSE BLOCK ***** */
  23  
  24  /**
  25   * Hook.
  26   */
  27  class Hook
  28  {
  29  
  30      /**
  31       * Run a hook.
  32       *
  33       * @param string Hook to be run
  34       * @param array Parameters
  35       * @return bool Success
  36       */
  37      function run($hook, $params=array())
  38      {
  39          $success = true;
  40          if (!empty($GLOBALS['_PX_hook'][$hook])) {
  41              foreach ($GLOBALS['_PX_hook'][$hook] as $key => $val) {
  42                  $res = call_user_func(array($val[0], $val[1]), $hook, $params);
  43                  if ($res === false) {
  44                      $success = false;
  45                  }
  46              }
  47          }
  48          return $success;
  49      }
  50  
  51  
  52      /**
  53       * Register a hook.
  54       *
  55       * @param string Name of the hook
  56       * @param string Plugin name 
  57       * @param string Method of the plugin
  58       * @return bool Success
  59       */
  60      function register($hook, $plugin, $method)
  61      {
  62          if (!isset($GLOBALS['_PX_hook'])) {
  63              $GLOBALS['_PX_hook'] = array();
  64          }
  65          if (!isset($GLOBALS['_PX_hook'][$hook])) {
  66              $GLOBALS['_PX_hook'][$hook] = array();
  67          }
  68          $GLOBALS['_PX_hook'][$hook][] = array($plugin, $method);
  69          return true;
  70      }
  71  }
  72  
  73  ?>