class.ilChatroomGUIHandler.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Modules/Chatroom/classes/class.ilChatroom.php';

abstract class ilChatroomGUIHandler
{
        protected $gui;

        protected $ilUser;

        protected $ilCtrl;

        protected $ilLng;

        protected $rbacsystem;

        public function __construct(ilChatroomObjectGUI $gui)
        {
                global $ilUser, $ilCtrl, $lng, $rbacsystem;

                $this->gui        = $gui;
                $this->ilUser     = $ilUser;
                $this->ilCtrl     = $ilCtrl;
                $this->ilLng      = $lng;
                $this->rbacsystem = $rbacsystem;
        }

        protected function getRoomByObjectId($objectId)
        {
                return ilChatroom::byObjectId($objectId);
        }

        protected function exitIfNoRoomExists($room)
        {
                if(!$room)
                {
                        $this->sendResponse(
                                array(
                                        'success' => false,
                                        'reason'  => 'unkown room',
                                )
                        );
                }
        }

        public function sendResponse($response)
        {
                echo json_encode($response);
                exit;
        }

        protected function exitIfNoRoomPermission($room, $subRoom, $chat_user)
        {
                if(!$this->canModerate($room, $subRoom, $chat_user->getUserId()))
                {
                        $this->sendResponse(
                                array(
                                        'success' => false,
                                        'reason'  => 'not owner of private room',
                                )
                        );
                }
        }

        protected function canModerate($room, $subRoom, $user_id)
        {
                return $this->isMainRoom($subRoom) || $room->isOwnerOfPrivateRoom($user_id, $subRoom) || $this->hasPermission('moderate');
        }

        protected function isMainRoom($subRoomId)
        {
                return $subRoomId == 0;
        }

        public function hasPermission($permission)
        {
                return $this->rbacsystem->checkAccess($permission, $this->gui->ref_id);
        }

        public function execute($method)
        {
                $this->ilLng->loadLanguageModule('chatroom');

                if(method_exists($this, $method))
                {
                        return $this->$method();
                }
                else
                {
                        return $this->executeDefault($method);
                }
        }

        abstract public function executeDefault($requestedMethod);

        public function redirectIfNoPermission($permission)
        {
                if(!ilChatroom::checkUserPermissions($permission, $this->gui->ref_id))
                {
                        $this->ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", ROOT_FOLDER_ID);
                        $this->ilCtrl->redirectByClass("ilrepositorygui", "");
                }
        }

        public function isSuccessful($response)
        {
                $response = json_decode($response, true);

                return $response !== null && array_key_exists('success', $response) && $response['success'];
        }
}