class.ilUsersOnlineBlockGUI.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once("Services/Block/classes/class.ilBlockGUI.php");
require_once 'Services/Mail/classes/class.ilMailFormCall.php';
include_once 'Services/Mail/classes/class.ilMailGlobalServices.php';

class ilUsersOnlineBlockGUI extends ilBlockGUI
{
    protected $settings;

    protected $db;

    protected $rbacsystem;

    public static $block_type = "pdusers";
    
    public function __construct()
    {
        global $DIC;

        $this->ctrl = $DIC->ctrl();
        $this->lng = $DIC->language();
        $this->user = $DIC->user();
        $this->settings = $DIC->settings();
        $this->db = $DIC->database();
        $this->rbacsystem = $DIC->rbac()->system();
        $lng = $DIC->language();

        parent::__construct();
        
        $this->setLimit(10);
        $this->setTitle($lng->txt("users_online"));
        $this->setAvailableDetailLevels(3);

        // mjansen: Used for mail referer link (@see fillRow). I don't want to create a new instance in each fillRow call.
        $this->topGuiObj = new ilPersonalDesktopGUI();
    }
    
    public static function getBlockType()
    {
        return self::$block_type;
    }
    
    public static function isRepositoryObject()
    {
        return false;
    }

    public static function getScreenMode()
    {
        global $DIC;

        $ilCtrl = $DIC->ctrl();

        if ($ilCtrl->getCmdClass() == "ilpublicuserprofilegui") {
            return IL_SCREEN_FULL;
        }

        switch ($ilCtrl->getCmd()) {
            case "showUserProfile":
                return IL_SCREEN_FULL;
                break;
                
            default:
                return IL_SCREEN_SIDE;
                break;
        }
    }

    public function executeCommand()
    {
        $ilCtrl = $this->ctrl;

        $next_class = $ilCtrl->getNextClass();
        $cmd = $ilCtrl->getCmd("getHTML");
        
        switch ($next_class) {
            // profile
            case "ilpublicuserprofilegui":
                include_once('./Services/User/classes/class.ilPublicUserProfileGUI.php');
                $profile_gui = new ilPublicUserProfileGUI($_GET["user"]);
                $profile_gui->setBackUrl($ilCtrl->getParentReturn($this));
                return $ilCtrl->forwardCommand($profile_gui);
                break;
                
            default:
                return $this->$cmd();
        }
    }

    public function getHTML()
    {
        $ilUser = $this->user;
        
        $this->users_online_pref = $ilUser->getPref("show_users_online");
        
        if ($this->users_online_pref != "y" && $this->users_online_pref != "associated") {
            return "";
        }
        
        $this->getUsers();
        
        if ($this->getCurrentDetailLevel() == 0) {
            return "";
        } else {
            return parent::getHTML();
        }
    }
    
    public function getUsers()
    {
        $ilUser = $this->user;
        
        if ($this->users_online_pref == "associated") {
            $this->users = ilUtil::getAssociatedUsersOnline($ilUser->getId(), true);
        } else {
            $this->users = ilObjUser::_getUsersOnline(0, true);
        }
        
        $this->num_users = 0;
        
        // add current user always to list
        if ($ilUser->getId() != ANONYMOUS_USER_ID &&
            ilObjUser::_lookupPref($ilUser->getId(), "hide_own_online_status") != "y") {
            $this->users[$ilUser->getId()] =
                array("user_id" => $ilUser->getId(),
                    "firstname" => $ilUser->getFirstname(),
                    "lastname" => $ilUser->getLastname(),
                    "title" => $ilUser->getUTitle(),
                    "login" => $ilUser->getLogin());
        }

        foreach ($this->users as $user_id => $user) {
            if ($user_id != ANONYMOUS_USER_ID) {
                $this->num_users++;
            } else {
                $this->visitors = $user["num"];
            }
        }
    }
    
    public function fillDataSection()
    {
        include_once("Services/Notes/classes/class.ilNote.php");
        
        if ($this->getCurrentDetailLevel() > 1 && $this->num_users > 0) {
            $this->setRowTemplate("tpl.users_online_row.html", "Services/PersonalDesktop");
            $this->getListRowData();
            if ($this->getCurrentDetailLevel() > 2) {
                $this->setColSpan(2);
            }
            parent::fillDataSection();
        } else {
            $this->setEnableNumInfo(false);
            $this->setDataSection($this->getOverview());
        }
    }
    

    public function getListRowData()
    {
        $ilUser = $this->user;
        $rbacsystem = $this->rbacsystem;

        $data = array();
        
        $this->mail_allowed = ($ilUser->getId() != ANONYMOUS_USER_ID &&
                               $rbacsystem->checkAccess('internal_mail', ilMailGlobalServices::getMailObjectRefId()));
        
        foreach ($this->users as $user_id => $user) {
            $data[] = array(
                "id" => $user_id,
                "login" => $user["login"]
                );
        }
        $this->setData($data);
        
        // we do not have at least one (non hidden) active user
        if (count($data) == 0) {
            $this->setEnableNumInfo(false);
            $this->setCurrentDetailLevel(1);
            $this->enabledetailrow = false;
            $this->setDataSection($this->getOverview());
        }
    }
    
    public function fillRow($a_set)
    {
        $ilUser = $this->user;
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        $ilSetting = $this->settings;
        $rbacsystem = $this->rbacsystem;

        // mail link
        $a_set["mail_to"] = "";
        if ($this->mail_allowed &&
           $rbacsystem->checkAccessOfUser($a_set['id'], 'internal_mail', ilMailGlobalServices::getMailObjectRefId())) {
            $a_set['mail_url'] = ilMailFormCall::getLinkTarget($this->topGuiObj, '', array(), array('type' => 'new', 'rcp_to' => urlencode($a_set['login'])));
        }
        
        // check for profile
        $a_set["profile"] = in_array(
            ilObjUser::_lookupPref($a_set["id"], "public_profile"),
            array("y", "g")
        );

        // user image
        if ($this->getCurrentDetailLevel() > 2) {
            if ($a_set["mail_url"] != "") {
                $this->tpl->setCurrentBlock("mailto_link");
                $this->tpl->setVariable("TXT_MAIL", $lng->txt("mail"));
                $this->tpl->setVariable("MAIL_URL", $a_set["mail_url"]);
                $this->tpl->parseCurrentBlock();
            }
    
            $chatSettings = new ilSetting('chatroom');
            if (/*ilChatServerConfig::_isActive() && */$chatSettings->get('chat_enabled')) {
                if (!$this->__showActiveChatsOfUser($a_set["id"])) {
                    // Show invite to chat
                    $this->__showChatInvitation($a_set["id"]);
                }

                include_once './Modules/Chatroom/classes/class.ilObjChatroom.php';
                if ($a_set["id"] == $ilUser->getId() &&
                    $rbacsystem->checkAccess('read', ilObjChatroom::_getPublicRefId())) {
                    $this->tpl->setCurrentBlock('chat_link');
                    $this->tpl->setVariable('TXT_CHAT_INVITE', $lng->txt('chat_enter_public_room'));
                    $this->tpl->setVariable('TXT_CHAT_INVITE_TOOLTIP', $lng->txt('chat_enter_public_room_tooltip'));
                    $this->tpl->setVariable('CHAT_LINK', './ilias.php?baseClass=ilRepositoryGUI&cmd=view&ref_id=' . ilObjChatroom::_getPublicRefId());
                    $this->tpl->parseCurrentBlock();
                }
            }
            
            // user image
            $this->tpl->setCurrentBlock("usr_image");
            $this->tpl->setVariable(
                "USR_IMAGE",
                ilObjUser::_getPersonalPicturePath($a_set["id"], "xxsmall")
            );
            $this->tpl->setVariable("USR_ALT", $lng->txt("personal_picture"));
            $this->tpl->parseCurrentBlock();
            $this->tpl->touchBlock("usr_image_space");
        }
                    
        // username
        if (!$a_set["profile"]) {
            $this->tpl->setVariable("USR_LOGIN", $a_set["login"]);
        } elseif ($this->getCurrentDetailLevel() > 2) {
            $this->tpl->setVariable("USR_LOGIN", "<br />" . $a_set["login"]);
        } else {
            $this->tpl->setVariable("USR_LOGIN", " [" . $a_set["login"] . "]");
        }
        
        // profile link
        if ($a_set["profile"]) {
            include_once "Services/User/classes/class.ilUserUtil.php";
            $user_name = ilUserUtil::getNamePresentation($a_set["id"], false, false, "", false, true, false);
            
            $this->tpl->setCurrentBlock("profile_link");
            $this->tpl->setVariable("TXT_VIEW", $lng->txt("profile"));
            
            // see ilPersonalProfileGUI::getProfilePortfolio()
            $has_prtf = false;
            if ($ilSetting->get('user_portfolios')) {
                include_once "Modules/Portfolio/classes/class.ilObjPortfolio.php";
                $has_prtf = ilObjPortfolio::getDefaultPortfolio($a_set["id"]);
            }
            if (!$has_prtf) {
                // (simple) profile: center column
                $ilCtrl->setParameter($this, "user", $a_set["id"]);
                $this->tpl->setVariable(
                    "LINK_PROFILE",
                    $ilCtrl->getLinkTargetByClass("ilpublicuserprofilegui", "getHTML")
                );
            } else {
                // portfolio: fullscreen
                include_once "Services/Link/classes/class.ilLink.php";
                $this->tpl->setVariable("LINK_PROFILE", ilLink::_getLink($a_set["id"], "usr"));
                $this->tpl->setVariable("LINK_TARGET", "_blank");
            }
            
            $this->tpl->setVariable("USR_ID", $a_set["id"]);
            $this->tpl->setVariable("LINK_FULLNAME", $user_name);
            $this->tpl->parseCurrentBlock();
        } else {
            $this->tpl->setVariable("USR_FULLNAME", "");
        }
    }

    public function getOverview()
    {
        $lng = $this->lng;

        // parse visitors text
        if (empty($this->visitors) || $this->users_online_pref == "associated") {
            $visitor_text = "";
        } elseif ($this->visitors == "1") {
            $visitor_text = "1 " . $lng->txt("visitor");
        } else {
            $visitor_text = $visitors . " " . $lng->txt("visitors");
        }
        
        // parse registered users text
        if ($this->num_users > 0) {
            $user_kind = ($this->users_online_pref == "associated") ? "associated_user" : "registered_user";
            if ($this->num_users == 1) {
                $user_list = $this->num_users . " " . $lng->txt($user_kind);
            } else {
                $user_list = $this->num_users . " " . $lng->txt($user_kind . "s");
            }
                        
            if (!empty($visitor_text)) {
                $user_list .= " " . $lng->txt("and") . " " . $visitor_text;
            }
        } else {
            $user_list = $visitor_text;
        }
        
        return '<div class="small">' . $user_list . "</div>";
    }

    public function __showActiveChatsOfUser($a_usr_id)
    {
        return false;
    }
    
    public function __showChatInvitation($a_usr_id)
    {
        $rbacsystem = $this->rbacsystem;
        $ilUser = $this->user;
        $lng = $this->lng;
        
        include_once './Modules/Chatroom/classes/class.ilObjChatroom.php';
        
        if ($a_usr_id == $ilUser->getId()) {
            return false;
        }

        if ($rbacsystem->checkAccess('read', ilObjChatroom::_getPublicRefId())
        and $rbacsystem->checkAccessOfUser($a_usr_id, 'read', ilObjChatroom::_getPublicRefId())) {
            $this->tpl->setCurrentBlock("chat_link");
            $this->tpl->setVariable("TXT_CHAT_INVITE", $lng->txt('chat_invite_public_room'));
            $this->tpl->setVariable("CHAT_LINK", './ilias.php?baseClass=ilRepositoryGUI&ref_id=' . ilObjChatroom::_getPublicRefId() . '&usr_id=' . $a_usr_id . '&cmd=view-invitePD');
            $this->tpl->setVariable('TXT_CHAT_INVITE_TOOLTIP', $lng->txt('chat_invite_public_room_tooltip'));
            $this->tpl->parseCurrentBlock();
            
            return true;
        }
        return false;
    }
}