[Summary view]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Defines backup_chat_activity_task class
  19   *
  20   * @package     mod_chat
  21   * @category    backup
  22   * @copyright   2010 onwards Dongsheng Cai <dongsheng@moodle.com>
  23   * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  require_once($CFG->dirroot . '/mod/chat/backup/moodle2/backup_chat_stepslib.php');
  29  
  30  /**
  31   * Provides the steps to perform one complete backup of the Chat instance
  32   */
  33  class backup_chat_activity_task extends backup_activity_task {
  34  
  35      /**
  36       * No specific settings for this activity
  37       */
  38      protected function define_my_settings() {
  39      }
  40  
  41      /**
  42       * Defines a backup step to store the instance data in the chat.xml file
  43       */
  44      protected function define_my_steps() {
  45          $this->add_step(new backup_chat_activity_structure_step('chat_structure', 'chat.xml'));
  46      }
  47  
  48      /**
  49       * Encodes URLs to the index.php and view.php scripts
  50       *
  51       * @param string $content some HTML text that eventually contains URLs to the activity instance scripts
  52       * @return string the content with the URLs encoded
  53       */
  54      static public function encode_content_links($content) {
  55          global $CFG;
  56  
  57          $base = preg_quote($CFG->wwwroot . '/mod/chat', '#');
  58  
  59          // Link to the list of chats.
  60          $pattern = "#(".$base."\/index.php\?id\=)([0-9]+)#";
  61          $content = preg_replace($pattern, '$@CHATINDEX*$2@$', $content);
  62  
  63          // Link to chat view by moduleid.
  64          $pattern = "#(".$base."\/view.php\?id\=)([0-9]+)#";
  65          $content = preg_replace($pattern, '$@CHATVIEWBYID*$2@$', $content);
  66  
  67          return $content;
  68      }
  69  }