LanguageMultilingualismForm.class.php

<?php

namespace wcf\acp\form;

use wcf\data\language\Language;
use wcf\data\language\LanguageEditor;
use wcf\form\AbstractForm;
use wcf\system\cache\eager\LanguageCache;
use wcf\system\exception\UserInputException;
use wcf\system\language\LanguageFactory;
use wcf\system\WCF;
use wcf\util\ArrayUtil;

/**
 * Shows the language multilingualism form.
 *
 * @author  Jean-Marc Licht
 * @copyright   2001-2019 WoltLab GmbH
 * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
 */
class LanguageMultilingualismForm extends AbstractForm
{
    /**
     * @inheritDoc
     */
    public $activeMenuItem = 'wcf.acp.menu.link.language.multilingualism';

    /**
     * @inheritDoc
     */
    public $neededPermissions = ['admin.language.canManageLanguage'];

    /**
     * indicates if multilingualism is enabled
     * @var int
     */
    public $enable = 0;

    /**
     * ids of selected available languages
     * @var int[]
     */
    public $languageIDs = [];

    /**
     * list of available content languages
     * @var Language[]
     */
    public $languages = [];

    /**
     * indicates that this page is only accessible to owners in enterprise mode
     */
    const BLACKLISTED_IN_ENTERPRISE_MODE = true;

    /**
     * @inheritDoc
     */
    public function readParameters()
    {
        parent::readParameters();

        $this->languages = LanguageFactory::getInstance()->getLanguages();
    }

    /**
     * @inheritDoc
     */
    public function readFormParameters()
    {
        parent::readFormParameters();

        if (isset($_POST['enable'])) {
            $this->enable = \intval($_POST['enable']);
        }
        if (isset($_POST['languageIDs']) && \is_array($_POST['languageIDs'])) {
            $this->languageIDs = ArrayUtil::toIntegerArray($_POST['languageIDs']);
        }
    }

    /**
     * @inheritDoc
     */
    public function validate()
    {
        parent::validate();

        if ($this->enable == 1) {
            // add default language
            if (!\in_array(LanguageFactory::getInstance()->getDefaultLanguageID(), $this->languageIDs)) {
                $this->languageIDs[] = LanguageFactory::getInstance()->getDefaultLanguageID();
            }

            // validate language ids
            $contentLanguages = 0;
            foreach ($this->languageIDs as $languageID) {
                if (isset($this->languages[$languageID])) {
                    $contentLanguages++;
                }
            }

            if ($contentLanguages < 2) {
                throw new UserInputException('languageIDs');
            }
        }
    }

    /**
     * @inheritDoc
     */
    public function save()
    {
        parent::save();

        // save
        LanguageEditor::enableMultilingualism(($this->enable == 1 ? $this->languageIDs : []));

        // clear cache
        (new LanguageCache())->rebuild();
        $this->saved();

        // show success message
        WCF::getTPL()->assign('success', true);
    }

    /**
     * @inheritDoc
     */
    public function readData()
    {
        parent::readData();

        if (empty($_POST)) {
            // default values
            $contentLanguages = 0;
            foreach ($this->languages as $languageID => $language) {
                if ($language->hasContent) {
                    $contentLanguages++;
                    $this->languageIDs[] = $languageID;
                }
            }

            // add default language
            if (!\in_array(LanguageFactory::getInstance()->getDefaultLanguageID(), $this->languageIDs)) {
                $this->languageIDs[] = LanguageFactory::getInstance()->getDefaultLanguageID();
            }

            if ($contentLanguages > 1) {
                $this->enable = 1;
            }
        }
    }

    /**
     * @inheritDoc
     */
    public function assignVariables()
    {
        parent::assignVariables();

        WCF::getTPL()->assign([
            'defaultLanguageID' => LanguageFactory::getInstance()->getDefaultLanguageID(),
            'enable' => $this->enable,
            'languageIDs' => $this->languageIDs,
            'languages' => $this->languages,
        ]);
    }
}