SysFolder Icons with TYPO3 Icon-API - typo3

Question

Till TYPO3 CMS 6.2 i've been using the following code in extTables.php to provide sysfolder icons:
$TCA['pages']['columns']['module']['config']['items'][] = array('Templates', 'templates', '/fileadmin/icons/application_side_list.png');
\TYPO3\CMS\Backend\Sprite\SpriteManager::addTcaTypeIcon('pages', 'contains-templates', '/fileadmin/icons/application_side_list.png');
As since 7.6 the code is obsolete and icons are provided by the Icon-API. Am I right? So my question is, if it's still possible to provide sysfolder icons to the backend using BitmapIconProvider, SvgIconProvider or the FontawesomeIconProvider?

Answer 1

Yes, this should work using the IconRegistry core class:
ext_localconf.php:
if (TYPO3_MODE === 'BE') {
/** #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-templates',
\TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider::class,
['source' => 'EXT:myext/Resources/Public/Icons/application_side_list.png']
);
}
ext_tables.php:
if (TYPO3_MODE === 'BE') {
$GLOBALS['TCA']['pages']['columns']['module']['config']['items'][] = [
0 => 'Templates',
1 => 'templates',
2 => 'apps-pagetree-folder-contains-templates'
];
}

Answer 2

The TYPO3 extension must be modified to fit the needs of TYPO3 7.5 and higher. Replace myextkey by the extension key of your extension.
ext_localconf.php:
if (TYPO3_MODE == 'BE') {
$pageType = 'myext10'; // a maximum of 10 characters
$icons = array(
'apps-pagetree-folder-contains-' . $pageType => 'apps-pagetree-folder-contains-myextkey.svg'
);
/** #var \TYPO3\CMS\Core\Imaging\IconRegistry $iconRegistry */
$iconRegistry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Imaging\IconRegistry::class);
foreach ($icons as $identifier => $filename) {
$iconRegistry->registerIcon(
$identifier,
$iconRegistry->detectIconProvider($filename),
array('source' => 'EXT:' . $_EXTKEY . '/Resources/Public/Icons/' . $filename)
);
}
}
Configuration/TCA/Overrides/pages.php:
<?php
if (!defined ('TYPO3_MODE')) {
die ('Access denied.');
}
// add folder icon
$pageType = 'myext10'; // a maximum of 10 characters
$iconReference = 'apps-pagetree-folder-contains-' . $pageType;
$addToModuleSelection = TRUE;
foreach ($GLOBALS['TCA']['pages']['columns']['module']['config']['items'] as $item) {
if ($item['1'] == $pageType) {
$addToModuleSelection = false;
break;
}
}
if ($addToModuleSelection) {
$GLOBALS['TCA']['pages']['ctrl']['typeicon_classes']['contains-' . $pageType] = $iconReference;
$GLOBALS['TCA']['pages']['columns']['module']['config']['items'][] = array(
0 => 'LLL:EXT:myextkey/locallang.xml:pageModule.plugin',
1 => $pageType,
2 => $iconReference
);
}
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::registerPageTSConfigFile(
$pageType,
'Configuration/TSconfig/Page/folder_tables.txt',
'EXT:myextkey :: Restrict pages to myextkey records'
);
locallang.xml:
<label index="pageModule.plugin">My Extension: Table names of my extension</label>
Resources/Public/Icons/apps-pagetree-folder-contains-myextkey.svg:
vector graphic image file for your extension tables
see https://github.com/TYPO3/TYPO3.Icons for working example SVG icons.
Configuration/TSconfig/Page/folder_tables.txt:
Insert the table names of your extension.
mod.web_list.allowedNewTables = tx_myextkey_tablename1, tx_myextkey_tablename2, tx_myextkey_tablename3