class.ilChatroomBlockGUI.php

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<?php
/* Copyright (c) 1998-2012 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Services/Block/classes/class.ilBlockGUI.php';
require_once 'Modules/Chatroom/classes/class.ilChatroomServerConnector.php';
require_once 'Modules/Chatroom/classes/class.ilChatroomServerSettings.php';
require_once 'Services/JSON/classes/class.ilJsonUtil.php';
require_once 'Modules/Chatroom/classes/class.ilChatroomBlock.php';
require_once 'Modules/Chatroom/classes/class.ilChatroomSmilies.php';

class ilChatroomBlockGUI extends ilBlockGUI
{
        public static $block_type = 'chatviewer';

        public function __construct()
        {
                global $lng;

                parent::__construct();

                $lng->loadLanguageModule('chatroom');
                
                $this->setImage(ilUtil::getImagePath('icon_chat.png'));
                $this->setTitle($lng->txt('chat_chatviewer'));
                $this->setAvailableDetailLevels(1, 0);
                $this->allow_moving = true;
        }

        public static function getBlockType()
        {
                return self::$block_type;
        }

        public static function isRepositoryObject()
        {
                return false;
        }

        public static function getScreenMode()
        {
                switch($_GET['cmd'])
                {
                        default:
                                return IL_SCREEN_SIDE;
                                break;
                }
        }

        public function executeCommand()
        {
                global $ilCtrl;

                $cmd = $ilCtrl->getCmd('getHTML');

                return $this->$cmd();
        }

        public function getHTML()
        {
                ilYuiUtil::initJson();

                $chatSetting = new ilSetting('chatroom');
                if($this->getCurrentDetailLevel() == 0 || !$chatSetting->get('chat_enabled', 0) || !(bool)@ilChatroomServerConnector::checkServerConnection())
                {
                        return '';
                }
                else
                {
                        return parent::getHTML();
                }
        }

        public function fillDataSection()
        {
                global $tpl, $lng, $ilCtrl;

                //@todo: Dirty hack
                if($ilCtrl->isAsynch())
                {
                        return $this->getMessages();
                }

                $tpl->addJavascript('./Modules/Chatroom/js/chatviewer.js');
                $tpl->addCss('./Modules/Chatroom/templates/default/style.css');

                $chatblock = new ilChatroomBlock();
                $body_tpl  = new ilTemplate('tpl.chatroom_block_message_body.html', true, true, 'Modules/Chatroom');

                $height = 120;
                if($this->getCurrentDetailLevel() > 0 && $this->getCurrentDetailLevel() <= 3)
                {
                        $height *= $this->getCurrentDetailLevel();
                }
                $body_tpl->setVariable('BLOCK_HEIGHT', $height);
                $body_tpl->setVariable('TXT_ENABLE_AUTOSCROLL', $lng->txt('chat_enable_autoscroll'));

                $ilCtrl->setParameterByClass('ilcolumngui', 'block_id', 'block_' . $this->getBlockType() . '_' . (int)$this->getBlockId());
                $ilCtrl->setParameterByClass('ilcolumngui', 'ref_id', '#__ref_id');
                $body_tpl->setVariable('CHATBLOCK_BASE_URL', $ilCtrl->getLinkTargetByClass('ilcolumngui', 'updateBlock', '', true));
                $ilCtrl->setParameterByClass('ilcolumngui', 'block_id', '');
                $ilCtrl->setParameterByClass('ilcolumngui', 'ref_id', '');

                $smilieys = array();
                $settings = ilChatroomServerSettings::loadDefault();
                if($settings->getSmiliesEnabled())
                {
                        $smilies_array = ilChatroomSmilies::_getSmilies();
                        foreach($smilies_array as $smiley_array)
                        {
                                foreach($smiley_array as $key => $value)
                                {
                                        if($key == 'smiley_keywords')
                                        {
                                                $new_keys = explode("\n", $value);
                                        }

                                        if($key == 'smiley_fullpath')
                                        {
                                                $new_val = $value;
                                        }
                                }

                                foreach($new_keys as $new_key)
                                {
                                        $smilieys[$new_key] = $new_val;
                                }
                        }
                }
                else
                {
                        $smilieys = new stdClass();
                }
                $body_tpl->setVariable('SMILIES', json_encode($smilieys));

                $js_translations = array(
                        'LBL_CONNECT'    => 'chat_connection_established',
                        'LBL_DISCONNECT' => 'chat_connection_disconnected',
                        'LBL_TIMEFORMAT' => 'lang_timeformat_no_sec',
                        'LBL_DATEFORMAT' => 'lang_dateformat'
                );
                foreach($js_translations as $placeholder => $lng_variable)
                {
                        $body_tpl->setVariable($placeholder, json_encode($lng->txt($lng_variable)));
                }

                $content = $body_tpl->get() . $chatblock->getRoomSelect();
                $this->setDataSection($content);
        }

        protected function getMessages()
        {
                global $rbacsystem, $ilUser, $lng;

                $result     = new stdClass();
                $result->ok = false;
                
                if(!(int)$_REQUEST['ref_id'])
                {
                        echo ilJsonUtil::encode($result);
                        exit();
                }

                $object = ilObjectFactory::getInstanceByRefId((int)$_REQUEST['ref_id'], false);
                if(!$object || !$rbacsystem->checkAccess('read', (int)$_REQUEST['ref_id']))
                {
                        ilObjUser::_writePref
                        (
                                $ilUser->getId(), 'chatviewer_last_selected_room',
                                0
                        );

                        $result->errormsg = $lng->txt('msg_no_perm_read');
                        echo ilJsonUtil::encode($result);
                        exit();
                }

                require_once 'Modules/Chatroom/classes/class.ilChatroom.php';
                $room = ilChatroom::byObjectId($object->getId());

                $block = new ilChatroomBlock();
                $msg   = $block->getMessages($room);

                $ilUser->setPref
                (
                        'chatviewer_last_selected_room',
                        $object->getRefId()
                );
                ilObjUser::_writePref
                (
                        $ilUser->getId(), 'chatviewer_last_selected_room',
                        $object->getRefId()
                );

                $result->messages = array_reverse($msg);
                $result->ok       = true;

                include_once 'Services/JSON/classes/class.ilJsonUtil.php';
                echo ilJsonUtil::encode($result);
                exit();
        }
}