ext_tables.php

<?php
if (!defined('TYPO3_MODE')) {
    die ('Access denied.');
}

// get extension configuration
$confArr = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf']['tt_news']);


// allow news and news-category records on normal pages
TYPO3\CMS\Core\Utility\ExtensionManagementUtility::allowTableOnStandardPages('tt_news_cat');
TYPO3\CMS\Core\Utility\ExtensionManagementUtility::allowTableOnStandardPages('tt_news');


// initalize "context sensitive help" (csh)
TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addLLrefForTCAdescr('tt_news',
    'EXT:tt_news/csh/locallang_csh_ttnews.php');
TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addLLrefForTCAdescr('tt_news_cat',
    'EXT:tt_news/csh/locallang_csh_ttnewscat.php');
TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addLLrefForTCAdescr('xEXT_tt_news',
    'EXT:tt_news/csh/locallang_csh_manual.xml');
TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addLLrefForTCAdescr('_MOD_web_txttnewsM1',
    'EXT:tt_news/csh/locallang_csh_mod_newsadmin.xml');


if (TYPO3_MODE == 'BE') {
    if ($confArr['showBackEndModule']) {
        TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addModule(
            'web',
            'txttnewsM1',
            '',
            null,
            [
                'routeTarget' => RG\TtNews\Module\NewsAdminModule::class . '::mainAction',
                'access' => 'user,group',
                'name' => 'web_txttnewsM1',
                'navigationComponentId' => 'typo3-pagetree',
                'icon' => 'EXT:tt_news/Classes/Module/moduleicon.gif',

                'labels' => [

                    'll_ref' => 'LLL:EXT:tt_news/Classes/Module/locallang_mod.xml',
                ],
            ]
        );
    }

    $GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['cms']['db_layout']['addTables'][$_EXTKEY][0]['fList'] = 'uid,title,author,category,datetime,archivedate,tstamp';
    $GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['cms']['db_layout']['addTables'][$_EXTKEY][0]['icon'] = true;

    // Register context menu for the tt_news category manager
    $GLOBALS['TBE_MODULES_EXT']['xMOD_alt_clickmenu']['extendCMclasses'][] = array(
        'name' => \RG\TtNews\ClickMenu::class
    );

    /** @var \TYPO3\CMS\Core\Imaging\IconRegistry $iconRegistry */
    $iconRegistry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Imaging\IconRegistry::class);
    $iconRegistry->registerIcon(
        'apps-pagetree-folder-contains-news',
        \TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider::class,
        array(
            'source' => 'EXT:tt_news/Resources/Public/Images/Icons/ext_icon_ttnews_folder.gif',
        )
    );
    $iconRegistry->registerIcon(
        'ttnews-content-element-wizard-icon',
        \TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider::class,
        array(
            'source' => 'EXT:tt_news/Resources/Public/Images/ContentElementWizardIcon.gif',
        )
    );

    $iconRegistry->registerIcon(
        'tt-news',
        \TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider::class,
        array(
            'source' => 'EXT:tt_news/Resources/Public/Images/Icons/ext_icon.gif',
        )
    );
    $iconRegistry->registerIcon(
        'tt-news-article',
        \TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider::class,
        array(
            'source' => 'EXT:tt_news/Resources/Public/Images/Icons/tt_news_article.gif',
        )
    );
    $iconRegistry->registerIcon(
        'tt-news-exturl',
        \TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider::class,
        array(
            'source' => 'EXT:tt_news/Resources/Public/Images/Icons/tt_news_exturl.gif',
        )
    );

    // add folder icon
    $GLOBALS['TCA']['pages']['ctrl']['typeicon_classes']['contains-tt_news'] = 'apps-pagetree-folder-contains-news';
    $GLOBALS['TCA']['pages']['columns']['module']['config']['items'][] = array(
        0 => 'LLL:EXT:tt_news/Resources/Private/Language/locallang_tca.xlf:tt_news',
        1 => 'tt_news',
        2 => 'apps-pagetree-folder-contains-news'
    );

    // Register HTML template for the tt_news BackEnd Module
    $GLOBALS['TBE_STYLES']['htmlTemplates']['mod_ttnews_admin.html'] = TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extPath('tt_news') . 'mod1/mod_ttnews_admin.html';

}