class.ilPersonalSettingsGUI.php

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

class ilPersonalSettingsGUI
{
    public $tpl;
    public $lng;
    public $ilias;
    public $ctrl;

    public function __construct()
    {
        global $ilias, $tpl, $lng, $rbacsystem, $ilCtrl;

        include_once './Services/User/classes/class.ilUserDefinedFields.php';
        $this->user_defined_fields =&ilUserDefinedFields::_getInstance();

        $this->tpl =&$tpl;
        $this->lng =&$lng;
        $this->ilias =&$ilias;
        $this->ctrl =&$ilCtrl;
        $this->settings = $ilias->getAllSettings();
        //              $lng->loadLanguageModule("jsmath");
        $lng->loadLanguageModule('chatroom');
        $lng->loadLanguageModule('chatroom_adm');
        $this->upload_error = "";
        $this->password_error = "";
        $lng->loadLanguageModule("user");
        $ilCtrl->saveParameter($this, "user_page");
    }

    public function executeCommand()
    {
        global $DIC;

        $next_class = $this->ctrl->getNextClass();

        switch ($next_class) {
            case 'ilmailoptionsgui':
                require_once 'Services/Mail/classes/class.ilMailGlobalServices.php';
                if (!$DIC->rbac()->system()->checkAccess('internal_mail', ilMailGlobalServices::getMailObjectRefId())) {
                    $this->ilias->raiseError($DIC->language()->txt('permission_denied'), $this->ilias->error_obj->MESSAGE);
                }

                $this->__initSubTabs('showMailOptions');
                $DIC->tabs()->activateTab('mail_settings');
                $this->setHeader();

                require_once 'Services/Mail/classes/class.ilMailOptionsGUI.php';
                $this->ctrl->forwardCommand(new ilMailOptionsGUI());
                break;

            case 'ilpersonalchatsettingsformgui':
                $this->__initSubTabs($this->ctrl->getCmd());
                $this->setHeader();

                require_once 'Modules/Chatroom/classes/class.ilPersonalChatSettingsFormGUI.php';
                $chatSettingsGui = new ilPersonalChatSettingsFormGUI();
                $this->ctrl->forwardCommand($chatSettingsGui);
                break;

            default:
                $cmd = $this->ctrl->getCmd("showGeneralSettings");
                $this->$cmd();
                break;
        }
        return true;
    }

    // init sub tabs
    public function __initSubTabs($a_cmd)
    {
        global $ilTabs, $ilSetting, $ilHelp, $rbacsystem, $ilUser;

        $ilHelp->setScreenIdComponent("user");
        
        $showPassword = ($a_cmd == 'showPassword') ? true : false;
        $showGeneralSettings = ($a_cmd == 'showGeneralSettings') ? true : false;

        // old profile

        // general settings
        $ilTabs->addTarget(
            "general_settings",
            $this->ctrl->getLinkTarget($this, "showGeneralSettings"),
            "",
            "",
            "",
            $showGeneralSettings
        );

        // password
        if ($this->allowPasswordChange()) {
            $ilTabs->addTarget(
                "password",
                $this->ctrl->getLinkTarget($this, "showPassword"),
                "",
                "",
                "",
                $showPassword
            );
        }

        require_once 'Services/Mail/classes/class.ilMailGlobalServices.php';
        if ($rbacsystem->checkAccess('internal_mail', ilMailGlobalServices::getMailObjectRefId())) {
            $ilTabs->addTarget(
                "mail_settings",
                $this->ctrl->getLinkTargetByClass('ilMailOptionsGUI'),
                "",
                array('ilMailOptionsGUI')
            );
        }

        require_once 'Modules/Chatroom/classes/class.ilPersonalChatSettingsFormGUI.php';
        $chatSettingsGui = new ilPersonalChatSettingsFormGUI(false);
        if ($chatSettingsGui->isAccessible()) {
            $ilTabs->addTarget(
                'chat_settings',
                $this->ctrl->getLinkTarget($chatSettingsGui, 'showChatOptions'),
                '',
                'ilPersonalChatSettingsFormGUI',
                '',
                method_exists($chatSettingsGui, $a_cmd)
            );
        }

        include_once "./Services/Administration/classes/class.ilSetting.php";
        
        if ((bool) $ilSetting->get('user_delete_own_account') &&
            $ilUser->getId() != SYSTEM_USER_ID) {
            $ilTabs->addTab(
                "delacc",
                $this->lng->txt('user_delete_own_account'),
                $this->ctrl->getLinkTarget($this, "deleteOwnAccount1")
            );
        }
    }

    public function setHeader()
    {
        $this->tpl->setVariable('HEADER', $this->lng->txt('personal_settings'));
    }
    //
    //
    //  PASSWORD FORM
    //
    //

    public function showPassword($a_no_init = false, $hide_form = false)
    {
        global $ilTabs, $ilUser;
        
        $this->__initSubTabs("showPersonalData");
        $ilTabs->activateTab("password");

        $this->setHeader();
        // check whether password of user have to be changed
        // due to first login or password of user is expired
        if ($ilUser->isPasswordChangeDemanded()) {
            ilUtil::sendInfo(
                $this->lng->txt('password_change_on_first_login_demand')
            );
        } elseif ($ilUser->isPasswordExpired()) {
            $msg          = $this->lng->txt('password_expired');
            $password_age = $ilUser->getPasswordAge();
            ilUtil::sendInfo(sprintf($msg, $password_age));
        }

        if (!$a_no_init && !$hide_form) {
            $this->initPasswordForm();
        }
        $this->tpl->setContent(!$hide_form ? $this->form->getHTML() : '');
        $this->tpl->show();
    }

    public function initPasswordForm()
    {
        global $lng, $ilUser, $ilSetting;
        
        include_once("Services/Form/classes/class.ilPropertyFormGUI.php");
        $this->form = new ilPropertyFormGUI();
    
        // Check whether password change is allowed
        if ($this->allowPasswordChange()) {
            // The current password needs to be checked for verification
            // unless the user uses Shibboleth authentication with additional
            // local authentication for WebDAV.
            //if (
            //  ($ilUser->getAuthMode(true) != AUTH_SHIBBOLETH || !$ilSetting->get("shib_auth_allow_local"))
            //)
            if ($ilUser->getAuthMode(true) == AUTH_LOCAL) {
                // current password
                $cpass = new ilPasswordInputGUI($lng->txt("current_password"), "current_password");
                $cpass->setRetype(false);
                $cpass->setSkipSyntaxCheck(true);
                // only if a password exists.
                if ($ilUser->getPasswd()) {
                    $cpass->setRequired(true);
                }
                $this->form->addItem($cpass);
            }
            
            // new password
            $ipass = new ilPasswordInputGUI($lng->txt("desired_password"), "new_password");
            $ipass->setRequired(true);
            $ipass->setInfo(ilUtil::getPasswordRequirementsInfo());

            $this->form->addItem($ipass);
            $this->form->addCommandButton("savePassword", $lng->txt("save"));
            
            switch ($ilUser->getAuthMode(true)) {
                case AUTH_LOCAL:
                    $this->form->setTitle($lng->txt("chg_password"));
                    break;
                    
                case AUTH_SHIBBOLETH:
                case AUTH_CAS:
                    require_once('Services/WebDAV/classes/class.ilDAVActivationChecker.php');
                    if (ilDAVActivationChecker::_isActive()) {
                        $this->form->setTitle($lng->txt("chg_ilias_and_webfolder_password"));
                    } else {
                        $this->form->setTitle($lng->txt("chg_ilias_password"));
                    }
                    break;
                default:
                    $this->form->setTitle($lng->txt("chg_ilias_password"));
                    break;
            }
            $this->form->setFormAction($this->ctrl->getFormAction($this));
        }
    }
    
    protected function allowPasswordChange()
    {
        global $ilUser;

        if (\ilSession::get('used_external_auth')) {
            return false;
        }

        $status = ilAuthUtils::isPasswordModificationEnabled($ilUser->getAuthMode(true));
        if ($status) {
            return true;
        }

        return \ilAuthUtils::isPasswordModificationHidden() && ($ilUser->isPasswordChangeDemanded() || $ilUser->isPasswordExpired());
    }
    
    public function savePassword()
    {
        global $tpl, $lng, $ilCtrl, $ilUser, $ilSetting;
    
        // normally we should not end up here
        if (!$this->allowPasswordChange()) {
            $ilCtrl->redirect($this, "showPersonalData");
            return;
        }
        
        $this->initPasswordForm();
        if ($this->form->checkInput()) {
            $cp = $this->form->getItemByPostVar("current_password");
            $np = $this->form->getItemByPostVar("new_password");
            $error = false;
            
            // The old password needs to be checked for verification
            // unless the user uses Shibboleth authentication with additional
            // local authentication for WebDAV.
            #if ($ilUser->getAuthMode(true) != AUTH_SHIBBOLETH || ! $ilSetting->get("shib_auth_allow_local"))
            if ($ilUser->getAuthMode(true) == AUTH_LOCAL) {
                require_once 'Services/User/classes/class.ilUserPasswordManager.php';
                if (!ilUserPasswordManager::getInstance()->verifyPassword($ilUser, ilUtil::stripSlashes($_POST['current_password']))) {
                    $error = true;
                    $cp->setAlert($this->lng->txt('passwd_wrong'));
                }
            }

            if (!ilUtil::isPassword($_POST["new_password"], $custom_error)) {
                $error = true;
                if ($custom_error != '') {
                    $np->setAlert($custom_error);
                } else {
                    $np->setAlert($this->lng->txt("passwd_invalid"));
                }
            }
            $error_lng_var = '';
            if (!ilUtil::isPasswordValidForUserContext($_POST["new_password"], $ilUser, $error_lng_var)) {
                ilUtil::sendFailure($this->lng->txt('form_input_not_valid'));
                $np->setAlert($this->lng->txt($error_lng_var));
                $error = true;
            }
            if (
                ($ilUser->isPasswordExpired() || $ilUser->isPasswordChangeDemanded()) &&
                $_POST["current_password"] == $_POST["new_password"]) {
                $error = true;
                $np->setAlert($this->lng->txt("new_pass_equals_old_pass"));
            }
            
            if (!$error) {
                $ilUser->resetPassword($_POST["new_password"], $_POST["new_password"]);
                if ($_POST["current_password"] != $_POST["new_password"]) {
                    $ilUser->setLastPasswordChangeToNow();
                }

                if (ilSession::get('orig_request_target')) {
                    ilUtil::sendSuccess($this->lng->txt('saved_successfully'), true);
                    $target = ilSession::get('orig_request_target');
                    ilSession::set('orig_request_target', '');
                    ilUtil::redirect($target);
                } else {
                    ilUtil::sendSuccess($this->lng->txt('saved_successfully'));
                    $this->showPassword(true, true);
                    return;
                }
            }
        }
        $this->form->setValuesByPost();
        $this->showPassword(true);
    }
    
    //
    //
    //  GENERAL SETTINGS FORM
    //
    //

    public function workWithUserSetting($setting)
    {
        $result = true;
        if ($this->settings["usr_settings_hide_" . $setting] == 1) {
            $result = false;
        }
        if ($this->settings["usr_settings_disable_" . $setting] == 1) {
            $result = false;
        }
        return $result;
    }

    public function userSettingVisible($setting)
    {
        $result = true;
        if (isset($this->settings["usr_settings_hide_" . $setting]) &&
            $this->settings["usr_settings_hide_" . $setting] == 1) {
            $result = false;
        }
        return $result;
    }

    public function userSettingEnabled($setting)
    {
        $result = true;
        if ($this->settings["usr_settings_disable_" . $setting] == 1) {
            $result = false;
        }
        return $result;
    }

    public function showGeneralSettings($a_no_init = false)
    {
        global $ilTabs;

        $this->__initSubTabs("showPersonalData");
        $ilTabs->activateTab("general_settings");

        $this->setHeader();

        if (!$a_no_init) {
            $this->initGeneralSettingsForm();
        }
        $this->tpl->setContent($this->form->getHTML());
        $this->tpl->show();
    }

    public function initGeneralSettingsForm()
    {
        global $lng, $ilUser, $styleDefinition, $ilSetting;
        
        
        include_once("Services/Form/classes/class.ilPropertyFormGUI.php");
        $this->form = new ilPropertyFormGUI();

        // language
        if ($this->userSettingVisible("language")) {
            $languages = $this->lng->getInstalledLanguages();
            $options = array();
            foreach ($languages as $lang_key) {
                $options[$lang_key] = ilLanguage::_lookupEntry($lang_key, "meta", "meta_l_" . $lang_key);
            }
            
            $si = new ilSelectInputGUI($this->lng->txt("language"), "language");
            $si->setOptions($options);
            $si->setValue($ilUser->getLanguage());
            $si->setDisabled($ilSetting->get("usr_settings_disable_language"));
            $this->form->addItem($si);
        }

        // skin/style
        if ($this->userSettingVisible("skin_style")) {
            $skins = $styleDefinition->getAllSkins();
            if (is_array($skins)) {
                $si = new ilSelectInputGUI($this->lng->txt("skin_style"), "skin_style");

                $options = array();
                foreach ($skins as $skin) {
                    foreach ($skin->getStyles() as $style) {
                        include_once("./Services/Style/System/classes/class.ilSystemStyleSettings.php");
                        if (!ilSystemStyleSettings::_lookupActivatedStyle($skin->getId(), $style->getId()) || $style->isSubstyle()) {
                            continue;
                        }

                        $options[$skin->getId() . ":" . $style->getId()] = $skin->getName() . " / " . $style->getName();
                    }
                }
                $si->setOptions($options);
                $si->setValue($ilUser->skin . ":" . $ilUser->prefs["style"]);
                $si->setDisabled($ilSetting->get("usr_settings_disable_skin_style"));
                $this->form->addItem($si);
            }
        }

        // screen reader optimization
        if ($this->userSettingVisible("screen_reader_optimization")) {
            $cb = new ilCheckboxInputGUI($this->lng->txt("user_screen_reader_optimization"), "screen_reader_optimization");
            $cb->setChecked($ilUser->prefs["screen_reader_optimization"]);
            $cb->setDisabled($ilSetting->get("usr_settings_disable_screen_reader_optimization"));
            $cb->setInfo($this->lng->txt("user_screen_reader_optimization_info"));
            $this->form->addItem($cb);
        }

        // hits per page
        if ($this->userSettingVisible("hits_per_page")) {
            $si = new ilSelectInputGUI($this->lng->txt("hits_per_page"), "hits_per_page");
            
            $hits_options = array(10,15,20,30,40,50,100,9999);
            $options = array();

            foreach ($hits_options as $hits_option) {
                $hstr = ($hits_option == 9999)
                    ? $this->lng->txt("no_limit")
                    : $hits_option;
                $options[$hits_option] = $hstr;
            }
            $si->setOptions($options);
            $si->setValue($ilUser->prefs["hits_per_page"]);
            $si->setDisabled($ilSetting->get("usr_settings_disable_hits_per_page"));
            $this->form->addItem($si);
        }

        // Users Online
        /*
        if ($this->userSettingVisible("show_users_online"))
        {
            $si = new ilSelectInputGUI($this->lng->txt("show_users_online"), "show_users_online");

            $options = array(
                "y" => $this->lng->txt("users_online_show_y"),
                "associated" => $this->lng->txt("users_online_show_associated"),
                "n" => $this->lng->txt("users_online_show_n"));
            $si->setOptions($options);
            $si->setValue($ilUser->prefs["show_users_online"]);
            $si->setDisabled($ilSetting->get("usr_settings_disable_show_users_online"));
            $this->form->addItem($si);
        }*/

        // Store last visited
        $lv = new ilSelectInputGUI($this->lng->txt("user_store_last_visited"), "store_last_visited");
        $options = array(
            0 => $this->lng->txt("user_lv_keep_entries"),
            1 => $this->lng->txt("user_lv_keep_only_for_session"),
            2 => $this->lng->txt("user_lv_do_not_store"));
        $lv->setOptions($options);
        $lv->setValue((int) $ilUser->prefs["store_last_visited"]);
        $this->form->addItem($lv);

        // hide_own_online_status
        $awrn_set = new ilSetting("awrn");
        if ($awrn_set->get("awrn_enabled", false) && $this->userSettingVisible("hide_own_online_status")) {
            $this->lng->loadLanguageModule("awrn");

            $default = ($this->settings['hide_own_online_status'] == "n")
                ? $this->lng->txt("user_awrn_show")
                : $this->lng->txt("user_awrn_hide");

            $options = array(
                "" => $this->lng->txt("user_awrn_default")." (".$default.")",
                "n" => $this->lng->txt("user_awrn_show"),
                "y" => $this->lng->txt("user_awrn_hide"));
            $si = new ilSelectInputGUI($lng->txt("awrn_user_show"), "hide_own_online_status");
            $si->setOptions($options);
            $si->setDisabled($ilSetting->get("usr_settings_disable_hide_own_online_status"));
            $si->setValue($ilUser->prefs["hide_own_online_status"]);
            $si->setInfo($lng->txt("awrn_hide_from_awareness_info"));
            $this->form->addItem($si);

            $cb = new ilCheckboxInputGUI($this->lng->txt("awrn_hide_from_awareness"), "hide_own_online_status");
            $cb->setInfo($this->lng->txt("awrn_hide_from_awareness_info"));
            $cb->setChecked($ilUser->prefs["hide_own_online_status"] == "y");
            $cb->setDisabled($ilSetting->get("usr_settings_disable_hide_own_online_status"));
            //$this->form->addItem($cb);
        }

        require_once 'Services/Contact/BuddySystem/classes/class.ilBuddySystem.php';
        if (ilBuddySystem::getInstance()->isEnabled() && $this->userSettingVisible('bs_allow_to_contact_me')) {
            $this->lng->loadLanguageModule('buddysystem');
            $allow_to_contact_be = new ilCheckboxInputGUI($this->lng->txt('buddy_allow_to_contact_me'), 'bs_allow_to_contact_me');
            $allow_to_contact_be->setInfo($this->lng->txt('buddy_allow_to_contact_me_info'));
            $allow_to_contact_be->setChecked($ilUser->prefs['bs_allow_to_contact_me'] == 'y');
            $allow_to_contact_be->setDisabled($ilSetting->get('usr_settings_disable_bs_allow_to_contact_me'));
            $this->form->addItem($allow_to_contact_be);
        }

        include_once 'Services/Authentication/classes/class.ilSessionReminder.php';
        if (ilSessionReminder::isGloballyActivated()) {
            $cb = new ilCheckboxInputGUI($this->lng->txt('session_reminder'), 'session_reminder_enabled');
            $cb->setInfo($this->lng->txt('session_reminder_info'));
            $cb->setValue(1);
            $cb->setChecked((int) $ilUser->getPref('session_reminder_enabled'));

            $expires = ilSession::getSessionExpireValue();
            $lead_time_gui = new ilNumberInputGUI($this->lng->txt('session_reminder_lead_time'), 'session_reminder_lead_time');
            $lead_time_gui->setInfo(sprintf($this->lng->txt('session_reminder_lead_time_info'), ilDatePresentation::secondsToString($expires, true)));

            $min_value = ilSessionReminder::MIN_LEAD_TIME;
            $max_value = max($min_value, ((int) $expires / 60) - 1);

            $current_user_value = $ilUser->getPref('session_reminder_lead_time');
            if ($current_user_value < $min_value ||
               $current_user_value > $max_value) {
                $current_user_value = ilSessionReminder::SUGGESTED_LEAD_TIME;
            }
            $value = min(
                max(
                    $min_value,
                    $current_user_value
                ),
                $max_value
            );

            $lead_time_gui->setValue($value);
            $lead_time_gui->setSize(3);
            $lead_time_gui->setMinValue($min_value);
            $lead_time_gui->setMaxValue($max_value);
            $cb->addSubItem($lead_time_gui);

            $this->form->addItem($cb);
        }

        // calendar settings (copied here to be reachable when calendar is inactive)
        // they cannot be hidden/deactivated

        include_once('Services/Calendar/classes/class.ilCalendarUserSettings.php');
        include_once('Services/Calendar/classes/class.ilCalendarUtil.php');
        $lng->loadLanguageModule("dateplaner");
        $user_settings = ilCalendarUserSettings::_getInstanceByUserId($ilUser->getId());

        $select = new ilSelectInputGUI($lng->txt('cal_user_timezone'), 'timezone');
        $select->setOptions(ilCalendarUtil::_getShortTimeZoneList());
        $select->setInfo($lng->txt('cal_timezone_info'));
        $select->setValue($user_settings->getTimeZone());
        $this->form->addItem($select);

        $year = date("Y");
        $select = new ilSelectInputGUI($lng->txt('cal_user_date_format'), 'date_format');
        $select->setOptions(array(
            ilCalendarSettings::DATE_FORMAT_DMY => '31.10.' . $year,
            ilCalendarSettings::DATE_FORMAT_YMD => $year . "-10-31",
            ilCalendarSettings::DATE_FORMAT_MDY => "10/31/" . $year));
        $select->setInfo($lng->txt('cal_date_format_info'));
        $select->setValue($user_settings->getDateFormat());
        $this->form->addItem($select);

        $select = new ilSelectInputGUI($lng->txt('cal_user_time_format'), 'time_format');
        $select->setOptions(array(
            ilCalendarSettings::TIME_FORMAT_24 => '13:00',
            ilCalendarSettings::TIME_FORMAT_12 => '1:00pm'));
        $select->setInfo($lng->txt('cal_time_format_info'));
        $select->setValue($user_settings->getTimeFormat());
        $this->form->addItem($select);
        
        
        // starting point
        include_once "Services/User/classes/class.ilUserUtil.php";
        if (ilUserUtil::hasPersonalStartingPoint()) {
            $this->lng->loadLanguageModule("administration");
            $si = new ilRadioGroupInputGUI($this->lng->txt("adm_user_starting_point"), "usr_start");
            $si->setRequired(true);
            $si->setInfo($this->lng->txt("adm_user_starting_point_info"));
            $def_opt = new ilRadioOption($this->lng->txt("adm_user_starting_point_inherit"), 0);
            $def_opt->setInfo($this->lng->txt("adm_user_starting_point_inherit_info"));
            $si->addOption($def_opt);
            foreach (ilUserUtil::getPossibleStartingPoints() as $value => $caption) {
                $si->addOption(new ilRadioOption($caption, $value));
            }
            $si->setValue(ilUserUtil::hasPersonalStartPointPref()
                ? ilUserUtil::getPersonalStartingPoint()
                : 0);
            $this->form->addItem($si);
                        
            // starting point: repository object
            $repobj = new ilRadioOption($lng->txt("adm_user_starting_point_object"), ilUserUtil::START_REPOSITORY_OBJ);
            $repobj_id = new ilTextInputGUI($lng->txt("adm_user_starting_point_ref_id"), "usr_start_ref_id");
            $repobj_id->setInfo($lng->txt("adm_user_starting_point_ref_id_info"));
            $repobj_id->setRequired(true);
            $repobj_id->setSize(5);
            if ($si->getValue() == ilUserUtil::START_REPOSITORY_OBJ) {
                $start_ref_id = ilUserUtil::getPersonalStartingObject();
                $repobj_id->setValue($start_ref_id);
                if ($start_ref_id) {
                    $start_obj_id = ilObject::_lookupObjId($start_ref_id);
                    if ($start_obj_id) {
                        $repobj_id->setInfo($lng->txt("obj_" . ilObject::_lookupType($start_obj_id)) .
                            ": " . ilObject::_lookupTitle($start_obj_id));
                    }
                }
            }
            $repobj->addSubItem($repobj_id);
            $si->addOption($repobj);
        }
        
        // selector for unicode characters
        global $ilSetting;
        if ($ilSetting->get('char_selector_availability') > 0) {
            require_once 'Services/UIComponent/CharSelector/classes/class.ilCharSelectorGUI.php';
            $char_selector = new ilCharSelectorGUI(ilCharSelectorConfig::CONTEXT_USER);
            $char_selector->getConfig()->setAvailability($ilUser->getPref('char_selector_availability'));
            $char_selector->getConfig()->setDefinition($ilUser->getPref('char_selector_definition'));
            $char_selector->addFormProperties($this->form);
            $char_selector->setFormValues($this->form);
        }
        
        $this->form->addCommandButton("saveGeneralSettings", $lng->txt("save"));
        $this->form->setTitle($lng->txt("general_settings"));
        $this->form->setFormAction($this->ctrl->getFormAction($this));
    }
    
    public function saveGeneralSettings()
    {
        global $tpl, $lng, $ilCtrl, $ilUser;
    
        $this->initGeneralSettingsForm();
        if ($this->form->checkInput()) {
            if ($this->workWithUserSetting("skin_style")) {
                //set user skin and style
                if ($_POST["skin_style"] != "") {
                    $sknst = explode(":", $_POST["skin_style"]);

                    if ($ilUser->getPref("style") != $sknst[1] ||
                        $ilUser->getPref("skin") != $sknst[0]) {
                        $ilUser->setPref("skin", $sknst[0]);
                        $ilUser->setPref("style", $sknst[1]);
                    }
                }
            }

            // language
            if ($this->workWithUserSetting("language")) {
                $ilUser->setLanguage($_POST["language"]);
            }
            
            // hits per page
            if ($this->workWithUserSetting("hits_per_page")) {
                if ($_POST["hits_per_page"] != "") {
                    $ilUser->setPref("hits_per_page", $_POST["hits_per_page"]);
                }
            }

            // set show users online
            /*
            if ($this->workWithUserSetting("show_users_online"))
            {
                $ilUser->setPref("show_users_online", $_POST["show_users_online"]);
            }*/
            
            // store last visited?
            global $ilNavigationHistory;
            $ilUser->setPref("store_last_visited", (int) $_POST["store_last_visited"]);
            if ((int) $_POST["store_last_visited"] > 0) {
                $ilNavigationHistory->deleteDBEntries();
                if ((int) $_POST["store_last_visited"] == 2) {
                    $ilNavigationHistory->deleteSessionEntries();
                }
            }

            // set hide own online_status
            if ($this->workWithUserSetting("hide_own_online_status")) {
                /*if ($_POST["hide_own_online_status"] == 1) {
                    $ilUser->setPref("hide_own_online_status", "y");
                } else {
                    $ilUser->setPref("hide_own_online_status", "n");
                }*/
                $ilUser->setPref("hide_own_online_status", ilUtil::stripSlashes($_POST["hide_own_online_status"]));
            }

            require_once 'Services/Contact/BuddySystem/classes/class.ilBuddySystem.php';
            if (ilBuddySystem::getInstance()->isEnabled() && $this->workWithUserSetting('bs_allow_to_contact_me')) {
                if (isset($_POST['bs_allow_to_contact_me']) && $_POST['bs_allow_to_contact_me'] == 1) {
                    $ilUser->setPref('bs_allow_to_contact_me', 'y');
                } else {
                    $ilUser->setPref('bs_allow_to_contact_me', 'n');
                }
            }

            // set show users online
            if ($this->workWithUserSetting("screen_reader_optimization")) {
                $ilUser->setPref("screen_reader_optimization", $_POST["screen_reader_optimization"]);
            }
            
            // session reminder
            include_once 'Services/Authentication/classes/class.ilSessionReminder.php';
            if (ilSessionReminder::isGloballyActivated()) {
                $ilUser->setPref('session_reminder_enabled', (int) $this->form->getInput('session_reminder_enabled'));
                $ilUser->setPref('session_reminder_lead_time', $this->form->getInput('session_reminder_lead_time'));
            }

            // starting point
            include_once "Services/User/classes/class.ilUserUtil.php";
            if (ilUserUtil::hasPersonalStartingPoint()) {
                ilUserUtil::setPersonalStartingPoint(
                    $this->form->getInput('usr_start'),
                    $this->form->getInput('usr_start_ref_id')
                );
            }

            // selector for unicode characters
            global $ilSetting;
            if ($ilSetting->get('char_selector_availability') > 0) {
                require_once 'Services/UIComponent/CharSelector/classes/class.ilCharSelectorGUI.php';
                $char_selector = new ilCharSelectorGUI(ilCharSelectorConfig::CONTEXT_USER);
                $char_selector->getFormValues($this->form);
                $ilUser->setPref('char_selector_availability', $char_selector->getConfig()->getAvailability());
                $ilUser->setPref('char_selector_definition', $char_selector->getConfig()->getDefinition());
            }

            $ilUser->update();

            // calendar settings
            include_once('Services/Calendar/classes/class.ilCalendarUserSettings.php');
            $user_settings = ilCalendarUserSettings::_getInstanceByUserId($ilUser->getId());
            $user_settings->setTimeZone($this->form->getInput("timezone"));
            $user_settings->setDateFormat((int) $this->form->getInput("date_format"));
            $user_settings->setTimeFormat((int) $this->form->getInput("time_format"));
            $user_settings->save();
                        
            ilUtil::sendSuccess($lng->txtlng("common", "msg_obj_modified", $ilUser->getLanguage()), true);
            $ilCtrl->redirect($this, "showGeneralSettings");
        }

        $this->form->setValuesByPost();
        $this->showGeneralSettings(true);
    }
    
    protected function deleteOwnAccount1()
    {
        global $ilTabs, $ilToolbar, $ilUser, $ilSetting;
        
        if (!(bool) $ilSetting->get('user_delete_own_account') ||
            $ilUser->getId() == SYSTEM_USER_ID) {
            $this->ctrl->redirect($this, "showGeneralSettings");
        }
        
        // too make sure
        $ilUser->removeDeletionFlag();
        
        $this->setHeader();
        $this->__initSubTabs("deleteOwnAccount");
        $ilTabs->activateTab("delacc");
        
        ilUtil::sendInfo($this->lng->txt('user_delete_own_account_info'));
        $ilToolbar->addButton(
            $this->lng->txt('btn_next'),
            $this->ctrl->getLinkTarget($this, 'deleteOwnAccount2')
        );
        
        $this->tpl->show();
    }
    
    protected function deleteOwnAccount2()
    {
        global $ilTabs, $ilUser, $ilSetting;
        
        if (!(bool) $ilSetting->get('user_delete_own_account') ||
            $ilUser->getId() == SYSTEM_USER_ID) {
            $this->ctrl->redirect($this, "showGeneralSettings");
        }
        
        $this->setHeader();
        $this->__initSubTabs("deleteOwnAccount");
        $ilTabs->activateTab("delacc");
        
        include_once "Services/Utilities/classes/class.ilConfirmationGUI.php";
        $cgui = new ilConfirmationGUI();
        $cgui->setHeaderText($this->lng->txt('user_delete_own_account_logout_confirmation'));
        $cgui->setFormAction($this->ctrl->getFormAction($this));
        $cgui->setCancel($this->lng->txt("cancel"), "abortDeleteOwnAccount");
        $cgui->setConfirm($this->lng->txt("user_delete_own_account_logout_button"), "deleteOwnAccountLogout");
        $this->tpl->setContent($cgui->getHTML());
        $this->tpl->show();
    }
    
    protected function abortDeleteOwnAccount()
    {
        global $ilCtrl, $ilUser;
        
        $ilUser->removeDeletionFlag();
        
        ilUtil::sendInfo($this->lng->txt("user_delete_own_account_aborted"), true);
        $ilCtrl->redirect($this, "showGeneralSettings");
    }
    
    protected function deleteOwnAccountLogout()
    {
        global $ilAuth, $ilUser;
                
        // we are setting the flag and ending the session in the same step
        
        $ilUser->activateDeletionFlag();
                
        // see ilStartupGUI::showLogout()
        ilSession::setClosingContext(ilSession::SESSION_CLOSE_USER);
        $GLOBALS['DIC']['ilAuthSession']->logout();
        
        ilUtil::redirect("login.php?target=usr_" . md5("usrdelown"));
    }
    
    protected function deleteOwnAccount3()
    {
        global $ilTabs, $ilUser, $ilSetting;
        
        if (!(bool) $ilSetting->get('user_delete_own_account') ||
            $ilUser->getId() == SYSTEM_USER_ID ||
            !$ilUser->hasDeletionFlag()) {
            $this->ctrl->redirect($this, "showGeneralSettings");
        }
    
        $this->setHeader();
        $this->__initSubTabs("deleteOwnAccount");
        $ilTabs->activateTab("delacc");

        include_once "Services/Utilities/classes/class.ilConfirmationGUI.php";
        $cgui = new ilConfirmationGUI();
        $cgui->setHeaderText($this->lng->txt('user_delete_own_account_final_confirmation'));
        $cgui->setFormAction($this->ctrl->getFormAction($this));
        $cgui->setCancel($this->lng->txt("cancel"), "abortDeleteOwnAccount");
        $cgui->setConfirm($this->lng->txt("confirm"), "deleteOwnAccount4");
        $this->tpl->setContent($cgui->getHTML());
        $this->tpl->show();
    }
    
    protected function deleteOwnAccount4()
    {
        global $ilUser, $ilAuth, $ilSetting, $ilLog;
        
        if (!(bool) $ilSetting->get('user_delete_own_account') ||
            $ilUser->getId() == SYSTEM_USER_ID ||
            !$ilUser->hasDeletionFlag()) {
            $this->ctrl->redirect($this, "showGeneralSettings");
        }
        
        // build notification
        
        include_once "./Services/Notification/classes/class.ilSystemNotification.php";
        $ntf = new ilSystemNotification();
        $ntf->setLangModules(array("user"));
        $ntf->addAdditionalInfo("profile", $ilUser->getProfileAsString($this->lng), true);
        
        // mail message
        ilDatePresentation::setUseRelativeDates(false);
        $ntf->setIntroductionDirect(
            sprintf(
                $this->lng->txt("user_delete_own_account_email_body"),
                $ilUser->getLogin(),
                ILIAS_HTTP_PATH,
                ilDatePresentation::formatDate(new ilDateTime(time(), IL_CAL_UNIX))
            )
        );
        
        $message = $ntf->composeAndGetMessage($ilUser->getId(), null, null, true);
        $subject = $this->lng->txt("user_delete_own_account_email_subject");
        
        
        // send notification
        
        include_once "Services/Mail/classes/class.ilMail.php";
        $mail = new ilMail(ANONYMOUS_USER_ID);
        
        $user_email = $ilUser->getEmail();
        $admin_mail = $ilSetting->get("user_delete_own_account_email");
        
        // to user, admin as bcc
        if ($user_email) {
            $mail->sendMimeMail($user_email, null, $admin_mail, $subject, $message, null, true);
        }
        // admin only
        elseif ($admin_mail) {
            $mail->sendMimeMail($admin_mail, null, null, $subject, $message, null, true);
        }
        
        $ilLog->write("Account deleted: " . $ilUser->getLogin() . " (" . $ilUser->getId() . ")");
                
        $ilUser->delete();

        // terminate session
        $GLOBALS['DIC']['ilAuthSession']->logout();
        ilUtil::redirect("login.php?accdel=1");
    }
}