mediawiki-skins-Vector/includes/Hooks.php

765 lines
25 KiB
PHP

<?php
namespace MediaWiki\Skins\Vector;
use Config;
use IContextSource;
use MediaWiki\Auth\Hook\LocalUserCreatedHook;
use MediaWiki\Hook\MakeGlobalVariablesScriptHook;
use MediaWiki\Hook\OutputPageBodyAttributesHook;
use MediaWiki\Hook\RequestContextCreateSkinHook;
use MediaWiki\MediaWikiServices;
use MediaWiki\Preferences\Hook\GetPreferencesHook;
use MediaWiki\ResourceLoader as RL;
use MediaWiki\ResourceLoader\Hook\ResourceLoaderSiteModulePagesHook;
use MediaWiki\ResourceLoader\Hook\ResourceLoaderSiteStylesModulePagesHook;
use MediaWiki\Skins\Hook\SkinPageReadyConfigHook;
use OutputPage;
use RuntimeException;
use Skin;
use SkinTemplate;
use Title;
use User;
/**
* Presentation hook handlers for Vector skin.
*
* Hook handler method names should be in the form of:
* on<HookName>()
* @package Vector
* @internal
*/
class Hooks implements
GetPreferencesHook,
LocalUserCreatedHook,
MakeGlobalVariablesScriptHook,
OutputPageBodyAttributesHook,
ResourceLoaderSiteModulePagesHook,
ResourceLoaderSiteStylesModulePagesHook,
RequestContextCreateSkinHook,
SkinPageReadyConfigHook
{
/**
* Checks if the current skin is a variant of Vector
*
* @param string $skinName
* @return bool
*/
private static function isVectorSkin( string $skinName ): bool {
return (
$skinName === Constants::SKIN_NAME_LEGACY ||
$skinName === Constants::SKIN_NAME_MODERN
);
}
/**
* @param Config $config
* @return array
*/
private static function getActiveABTest( $config ) {
$ab = $config->get(
Constants::CONFIG_WEB_AB_TEST_ENROLLMENT
);
if ( count( $ab ) === 0 ) {
// If array is empty then no experiment and need to validate.
return $ab;
}
if ( !array_key_exists( 'buckets', $ab ) ) {
throw new RuntimeException( 'Invalid VectorWebABTestEnrollment value: Must contain buckets key.' );
}
if ( !array_key_exists( 'unsampled', $ab['buckets'] ) ) {
throw new RuntimeException( 'Invalid VectorWebABTestEnrollment value: Must define an `unsampled` bucket.' );
} else {
// check bucket values.
foreach ( $ab['buckets'] as $bucketName => $bucketDefinition ) {
if ( !is_array( $bucketDefinition ) ) {
throw new RuntimeException( 'Invalid VectorWebABTestEnrollment value: Buckets should be arrays' );
}
$samplingRate = $bucketDefinition['samplingRate'];
if ( is_string( $samplingRate ) ) {
throw new RuntimeException(
'Invalid VectorWebABTestEnrollment value: Sampling rate should be number between 0 and 1.'
);
}
}
}
return $ab;
}
/**
* Passes config variables to Vector (modern) ResourceLoader module.
* @param RL\Context $context
* @param Config $config
* @return array
*/
public static function getVectorResourceLoaderConfig(
RL\Context $context,
Config $config
) {
return [
'wgVectorSearchHost' => $config->get( 'VectorSearchHost' ),
'wgVectorWebABTestEnrollment' => self::getActiveABTest( $config ),
];
}
/**
* Generates config variables for skins.vector.search Resource Loader module (defined in
* skin.json).
*
* @param RL\Context $context
* @param Config $config
* @return array<string,mixed>
*/
public static function getVectorSearchResourceLoaderConfig(
RL\Context $context,
Config $config
): array {
$result = $config->get( 'VectorWvuiSearchOptions' );
$result['highlightQuery'] =
VectorServices::getLanguageService()->canWordsBeSplitSafely( $context->getLanguage() );
return $result;
}
/**
* SkinPageReadyConfig hook handler
*
* Replace searchModule provided by skin.
*
* @since 1.35
* @param RL\Context $context
* @param mixed[] &$config Associative array of configurable options
* @return void This hook must not abort, it must return no value
*/
public function onSkinPageReadyConfig(
RL\Context $context,
array &$config
): void {
// It's better to exit before any additional check
if ( !self::isVectorSkin( $context->getSkin() ) ) {
return;
}
// Tell the `mediawiki.page.ready` module not to wire up search.
// This allows us to use the new Vue implementation.
// Context has no knowledge of legacy / modern Vector
// and from its point of view they are the same thing.
// Please see the modules `skins.vector.js` and `skins.vector.legacy.js`
// for the wire up of search.
// The related method self::getVectorResourceLoaderConfig handles which
// search to load.
$config['search'] = false;
}
/**
* Transforms watch item inside the action navigation menu
*
* @param array &$content_navigation
*/
private static function updateActionsMenu( &$content_navigation ) {
$key = null;
if ( isset( $content_navigation['actions']['watch'] ) ) {
$key = 'watch';
}
if ( isset( $content_navigation['actions']['unwatch'] ) ) {
$key = 'unwatch';
}
// Promote watch link from actions to views and add an icon
if ( $key !== null ) {
self::appendClassToListItem(
$content_navigation['actions'][$key],
'icon'
);
$content_navigation['views'][$key] = $content_navigation['actions'][$key];
unset( $content_navigation['actions'][$key] );
}
}
/**
* Updates class list on list item
*
* @param array &$item to update for use in makeListItem
* @param array $classes to add to the item
* @param bool $applyToLink (optional) and defaults to false.
* If set will modify `link-class` instead of `class`
*/
private static function addListItemClass( &$item, $classes, $applyToLink = false ) {
$property = $applyToLink ? 'link-class' : 'class';
$existingClass = $item[$property] ?? [];
if ( is_array( $existingClass ) ) {
$item[$property] = array_merge( $existingClass, $classes );
} elseif ( is_string( $existingClass ) ) {
// treat as string
$item[$property] = array_merge( [ $existingClass ], $classes );
} else {
$item[$property] = $classes;
}
}
/**
* Updates the class on an existing item taking into account whether
* a class exists there already.
*
* @param array &$item
* @param string $newClass
*/
private static function appendClassToListItem( &$item, $newClass ) {
self::addListItemClass( $item, [ $newClass ] );
}
/**
* Updates personal navigation menu (user links) dropdown for modern Vector:
* - Adds icons
* - Makes user page and watchlist collapsible
*
* @param SkinTemplate $sk
* @param array &$content_navigation
*/
private static function updateUserLinksDropdownItems( $sk, &$content_navigation ) {
// For logged-in users in modern Vector, rearrange some links in the personal toolbar.
$user = $sk->getUser();
$isTemp = $user->isTemp();
$isRegistered = $user->isRegistered();
if ( $isTemp ) {
if ( isset( $content_navigation['user-page']['tmpuserpage'] ) ) {
$content_navigation['user-page']['tmpuserpage']['collapsible'] = true;
$content_navigation['user-page']['tmpuserpage'] =
self::updateMenuItem( $content_navigation['user-page']['tmpuserpage'] );
}
if ( isset( $content_navigation['user-menu']['tmpuserpage'] ) ) {
$content_navigation['user-menu']['tmpuserpage']['collapsible'] = true;
$content_navigation['user-menu']['tmpuserpage'] =
self::updateMenuItem( $content_navigation['user-menu']['tmpuserpage'] );
}
} elseif ( $isRegistered ) {
// Remove user page from personal menu dropdown for logged in use
$content_navigation['user-menu']['userpage']['collapsible'] = true;
// watchlist may be disabled if $wgGroupPermissions['*']['viewmywatchlist'] = false;
// See [[phab:T299671]]
if ( isset( $content_navigation['user-menu']['watchlist'] ) ) {
$content_navigation['user-menu']['watchlist']['collapsible'] = true;
}
// Remove logout link from user-menu and recreate it in SkinVector,
unset( $content_navigation['user-menu']['logout'] );
}
if ( $isRegistered ) {
// Prefix user link items with associated icon.
// Don't show icons for anon menu items (besides login and create account).
// Loop through each menu to check/append its link classes.
self::updateMenuItems( $content_navigation, 'user-menu' );
} else {
// Remove "Not logged in" from personal menu dropdown for anon users.
unset( $content_navigation['user-menu']['anonuserpage'] );
}
if ( !$isRegistered || $isTemp ) {
// "Create account" link is handled manually by Vector
unset( $content_navigation['user-menu']['createaccount'] );
// "Login" link is handled manually by Vector
unset( $content_navigation['user-menu']['login'] );
// Remove duplicate "Login" link added by SkinTemplate::buildPersonalUrls if group read permissions
// are set to false.
unset( $content_navigation['user-menu']['login-private'] );
}
}
/**
* Populates 'vector-user-menu-overflow' bucket for modern Vector with modified personal navigation (user links)
* menu items, including 'notification', 'user-interface-preferences', 'user-page', 'vector-user-menu-overflow'
*
* @param SkinTemplate $sk
* @param array &$content_navigation
*/
private static function updateUserLinksOverflowItems( $sk, &$content_navigation ) {
$overflow = 'vector-user-menu-overflow';
$content_navigation[$overflow] = [];
// Logged in and logged out overflow items
if ( isset( $content_navigation['user-interface-preferences']['uls'] ) ) {
$content_navigation[$overflow]['uls'] = array_merge(
$content_navigation['user-interface-preferences']['uls'], [
'collapsible' => true,
] );
}
// Logged in overflow items
if ( isset( $content_navigation['user-page']['userpage'] ) ) {
$content_navigation[$overflow]['userpage'] = array_merge(
$content_navigation['user-page']['userpage'], [
// T312157: Style the userpage link as a blue link rather than a quiet button.
'button' => false,
'collapsible' => true,
// Remove icon
'icon' => '',
] );
}
if ( isset( $content_navigation['notifications'] ) ) {
foreach ( $content_navigation['notifications'] as $key => $data ) {
$content_navigation[$overflow][$key] = $data;
}
}
if ( isset( $content_navigation['user-menu']['watchlist'] ) ) {
$content_navigation[$overflow]['watchlist'] = array_merge(
$content_navigation['user-menu']['watchlist'], [
'id' => 'pt-watchlist-2',
'button' => true,
'collapsible' => true,
'text-hidden' => true,
] );
}
// Anon/temp overflow items
$user = $sk->getUser();
$isTemp = $user->isTemp();
$isRegistered = $user->isRegistered();
$isCreateAccountAllowed = ( !$isRegistered || $isTemp );
if ( isset( $content_navigation['user-menu']['createaccount'] ) && $isCreateAccountAllowed ) {
$content_navigation[$overflow]['createaccount'] = array_merge(
$content_navigation['user-menu']['createaccount'], [
'id' => 'pt-createaccount-2',
// T312157: Style the userpage link as a blue link rather than a quiet button.
'button' => false,
'collapsible' => true,
// Remove icon
'icon' => '',
] );
}
self::updateMenuItems( $content_navigation, $overflow );
}
/**
* Updates personal navigation menu (user links) for modern Vector wherein user page, create account and login links
* are removed from the dropdown to be handled separately. In legacy Vector, the custom "user-page" bucket is
* removed to preserve existing behavior.
*
* @param SkinTemplate $sk
* @param array &$content_navigation
*/
private static function updateUserLinksItems( $sk, &$content_navigation ) {
$skinName = $sk->getSkinName();
if ( self::isSkinVersionLegacy( $skinName ) ) {
// Remove user page from personal toolbar since it will be inside the personal menu for logged-in
// users in legacy Vector.
unset( $content_navigation['user-page'] );
} else {
self::updateUserLinksOverflowItems( $sk, $content_navigation );
self::updateUserLinksDropdownItems( $sk, $content_navigation );
}
}
/**
* Modifies list item to make it collapsible.
*
* @param array &$item
* @param string $prefix defaults to user-links-
*/
private static function makeMenuItemCollapsible( array &$item, string $prefix = 'user-links-' ) {
$COLLAPSE_MENU_ITEM_CLASS = $prefix . 'collapsible-item';
self::appendClassToListItem(
$item,
$COLLAPSE_MENU_ITEM_CLASS
);
}
/**
* Make an icon
*
* @internal for use inside Vector skin.
* @param string $name
* @return string of HTML
*/
public static function makeIcon( $name ) {
// Html::makeLink will pass this through rawElement
return '<span class="mw-ui-icon mw-ui-icon-' . $name . ' mw-ui-icon-wikimedia-' . $name . '"></span>';
}
/**
* Updates template data for Vector menu items.
*
* @param array $item Menu data to update
* @param bool $isLinkData false if data is for li element (i.e. makeListItem()),
* true if for link element (i.e. makeLink())
* @return array $item Updated menu data
*/
public static function updateMenuItem( $item, $isLinkData = false ) {
$hasButton = $item['button'] ?? false;
$hideText = $item['text-hidden'] ?? false;
$isCollapsible = $item['collapsible'] ?? false;
$icon = $item['icon'] ?? '';
unset( $item['button'] );
unset( $item['icon'] );
unset( $item['text-hidden'] );
unset( $item['collapsible'] );
if ( $isCollapsible ) {
self::makeMenuItemCollapsible( $item );
}
if ( $hasButton ) {
self::addListItemClass( $item, [ 'mw-ui-button', 'mw-ui-quiet' ], !$isLinkData );
}
if ( $icon ) {
if ( $hideText ) {
$iconElementClasses = [ 'mw-ui-icon', 'mw-ui-icon-element',
// Some extensions declare icons without the wikimedia- prefix. e.g. Echo
'mw-ui-icon-' . $icon,
// FIXME: Some icon names are prefixed with `wikimedia-`.
// We should seek to remove all these instances.
'mw-ui-icon-wikimedia-' . $icon
];
self::addListItemClass( $item, $iconElementClasses, !$isLinkData );
} else {
$item['link-html'] = self::makeIcon( $icon );
}
}
return $item;
}
/**
* Updates user interface preferences for modern Vector to upgrade icon/button menu items.
*
* @param array &$content_navigation
* @param string $menu identifier
*/
private static function updateMenuItems( &$content_navigation, $menu ) {
foreach ( $content_navigation[$menu] as $key => $item ) {
$content_navigation[$menu][$key] = self::updateMenuItem( $item );
}
}
/**
* Vector 2022 only:
* Creates an additional menu that will be injected inside the more (cactions)
* dropdown menu. This menu is a clone of `views` and this menu will only be
* shown at low resolutions (when the `views` menu is hidden).
*
* An additional menu is used instead of adding to the existing cactions menu
* so that the emptyPortlet logic for that menu is preserved and the cactions menu
* is not shown at large resolutions when empty (e.g. all items including collapsed
* items are hidden).
*
* @param array &$content_navigation
*/
private static function createMoreOverflowMenu( &$content_navigation ) {
$clonedViews = [];
foreach ( array_keys( $content_navigation['views'] ?? [] ) as $key ) {
$newItem = $content_navigation['views'][$key];
self::makeMenuItemCollapsible(
$newItem,
'vector-more-'
);
$clonedViews['more-' . $key] = $newItem;
}
// Inject collapsible menu items ahead of existing actions.
$content_navigation['views-overflow'] = $clonedViews;
}
/**
* Upgrades Vector's watch action to a watchstar.
* This is invoked inside SkinVector, not via skin registration, as skin hooks
* are not guaranteed to run last.
* This can possibly be revised based on the outcome of T287622.
*
* @see https://www.mediawiki.org/wiki/Manual:Hooks/SkinTemplateNavigation
* @param SkinTemplate $sk
* @param array &$content_navigation
*/
public static function onSkinTemplateNavigation( $sk, &$content_navigation ) {
$title = $sk->getRelevantTitle();
$skinName = $sk->getSkinName();
if ( self::isVectorSkin( $skinName ) ) {
if (
$sk->getConfig()->get( 'VectorUseIconWatch' ) &&
$title && $title->canExist()
) {
self::updateActionsMenu( $content_navigation );
}
self::updateUserLinksItems( $sk, $content_navigation );
}
if ( $skinName === Constants::SKIN_NAME_MODERN ) {
self::createMoreOverflowMenu( $content_navigation );
}
}
/**
* Adds MediaWiki:Vector.css as the skin style that controls classic Vector.
*
* @param string $skin
* @param array &$pages
*/
public function onResourceLoaderSiteStylesModulePages( $skin, &$pages ): void {
if ( $skin === Constants::SKIN_NAME_MODERN ) {
$pages['MediaWiki:Vector.css'] = [ 'type' => 'style' ];
}
}
/**
* Adds MediaWiki:Vector.css as the skin style that controls classic Vector.
*
* @param string $skin
* @param array &$pages
*/
public function onResourceLoaderSiteModulePages( $skin, &$pages ): void {
if ( $skin === Constants::SKIN_NAME_MODERN ) {
$pages['MediaWiki:Vector.js'] = [ 'type' => 'script' ];
}
}
/**
* Adds the persistent sidebar hidden API preference.
*
* @param User $user User whose preferences are being modified.
* @param array[] &$prefs Preferences description array, to be fed to a HTMLForm object.
*/
public function onGetPreferences( $user, &$prefs ): void {
$config = MediaWikiServices::getInstance()->getMainConfig();
$vectorPrefs = [
Constants::PREF_KEY_SIDEBAR_VISIBLE => [
'type' => 'api',
'default' => $config->get(
Constants::CONFIG_KEY_DEFAULT_SIDEBAR_VISIBLE_FOR_AUTHORISED_USER
),
],
];
$prefs += $vectorPrefs;
}
/**
* Called one time when initializing a users preferences for a newly created account.
*
* @param User $user Newly created user object.
* @param bool $isAutoCreated
*/
public function onLocalUserCreated( $user, $isAutoCreated ) {
$config = MediaWikiServices::getInstance()->getMainConfig();
$default = $config->get( Constants::CONFIG_KEY_DEFAULT_SKIN_VERSION_FOR_NEW_ACCOUNTS );
if ( $default ) {
$optionsManager = MediaWikiServices::getInstance()->getUserOptionsManager();
$optionsManager->setOption(
$user,
Constants::PREF_KEY_SKIN,
$default === Constants::SKIN_VERSION_LEGACY ?
Constants::SKIN_NAME_LEGACY : Constants::SKIN_NAME_MODERN
);
}
}
/**
* Returns the necessary TOC classes.
*
* @param Skin $sk
* @param Config $config
* @return string[]
*/
private static function getTocClasses( Skin $sk, $config ): array {
if ( !( $sk instanceof SkinVector22 ) ) {
return [];
}
$classes = [];
if (
$sk->isTOCABTestEnabled() &&
$sk->isTableOfContentsVisibleInSidebar() &&
!$sk->getUser()->isAnon()
) {
$userBucket = !$sk->isUserInTocTreatmentBucket()
? 'control'
: 'treatment';
$experimentConfig = $config->get( Constants::CONFIG_WEB_AB_TEST_ENROLLMENT );
$experimentName = $experimentConfig[ 'name' ];
$classes[] = $experimentName;
$classes[] = "$experimentName-$userBucket";
}
return $classes;
}
/**
* Called when OutputPage::headElement is creating the body tag to allow skins
* and extensions to add attributes they might need to the body of the page.
*
* @param OutputPage $out
* @param Skin $sk
* @param string[] &$bodyAttrs
*/
public function onOutputPageBodyAttributes( $out, $sk, &$bodyAttrs ): void {
$skinName = $out->getSkin()->getSkinName();
if ( !self::isVectorSkin( $skinName ) ) {
return;
}
$config = $sk->getConfig();
// As of 2020/08/13, this CSS class is referred to by the following deployed extensions:
//
// - VisualEditor
// - CodeMirror
// - WikimediaEvents
//
// See https://codesearch.wmcloud.org/deployed/?q=skin-vector-legacy for an up-to-date
// list.
if ( self::isSkinVersionLegacy( $skinName ) ) {
$bodyAttrs['class'] .= ' skin-vector-legacy';
}
$tocClasses = self::getTocClasses( $sk, $config );
if ( $tocClasses ) {
$bodyAttrs['class'] .= ' ' . implode( ' ', $tocClasses );
}
// Should we disable the max-width styling?
if ( !self::isSkinVersionLegacy( $skinName ) && $sk->getTitle() && self::shouldDisableMaxWidth(
$config->get( 'VectorMaxWidthOptions' ),
$sk->getTitle(),
$out->getRequest()->getValues()
) ) {
$bodyAttrs['class'] .= ' skin-vector-disable-max-width';
}
$featureManager = VectorServices::getFeatureManager();
if ( $featureManager->isFeatureEnabled( Constants::FEATURE_LANGUAGE_IN_MAIN_PAGE_HEADER ) ) {
$bodyAttrs['class'] .= ' vector-language-in-header-enabled';
}
}
/**
* Temporary RequestContextCreateSkin hook handler.
* Switches to new Vector on certain pages.
*
* @see https://www.mediawiki.org/wiki/Manual:Hooks/RequestContextCreateSkin
*
* @param IContextSource $context The RequestContext object the skin is being created for.
* @param Skin|null|string &$skin A variable reference you may set a Skin instance or string
* key on to override the skin that will be used for the context.
* @return bool|void
*/
public function onRequestContextCreateSkin( $context, &$skin ) {
if ( !$skin ) {
// user is anonymous
$user = $context->getUser();
$config = $context->getConfig();
$titles = $config->get( 'Vector2022PreviewPages' );
$title = $context->getTitle();
$titleText = $title ? $title->getPrefixedText() : null;
if ( $titleText && $user->isAnon() && in_array( $titleText, $titles ) ) {
$skin = 'vector-2022';
}
}
}
/**
* Per the $options configuration (for use with $wgVectorMaxWidthOptions)
* determine whether max-width should be disabled on the page.
* For the main page: Check the value of $options['exclude']['mainpage']
* For all other pages, the following will happen:
* - the array $options['include'] of canonical page names will be checked
* against the current page. If a page has been listed there, function will return false
* (max-width will not be disabled)
* Max width is disabled if:
* 1) The current namespace is listed in array $options['exclude']['namespaces']
* OR
* 2) A query string parameter matches one of the regex patterns in $exclusions['querystring'].
*
* @internal only for use inside tests.
* @param array $options
* @param Title $title
* @param array $requestValues
* @return bool
*/
public static function shouldDisableMaxWidth( array $options, Title $title, array $requestValues ) {
$canonicalTitle = $title->getRootTitle();
$inclusions = $options['include'] ?? [];
$exclusions = $options['exclude'] ?? [];
if ( $title->isMainPage() ) {
// only one check to make
return $exclusions['mainpage'] ?? false;
} elseif ( $canonicalTitle->isSpecialPage() ) {
$canonicalTitle->fixSpecialName();
}
//
// Check the inclusions based on the canonical title
// The inclusions are checked first as these trump any exclusions.
//
// Now we have the canonical title and the inclusions link we look for any matches.
foreach ( $inclusions as $titleText ) {
$includedTitle = Title::newFromText( $titleText );
if ( $canonicalTitle->equals( $includedTitle ) ) {
return false;
}
}
//
// Check the exclusions
// If nothing matches the exclusions to determine what should happen
//
$excludeNamespaces = $exclusions['namespaces'] ?? [];
// Max width is disabled on certain namespaces
if ( $title->inNamespaces( $excludeNamespaces ) ) {
return true;
}
$excludeQueryString = $exclusions['querystring'] ?? [];
foreach ( $excludeQueryString as $param => $excludedParamPattern ) {
$paramValue = $requestValues[$param] ?? false;
if ( $paramValue ) {
if ( $excludedParamPattern === '*' ) {
// Backwards compatibility for the '*' wildcard.
$excludedParamPattern = '.+';
}
return (bool)preg_match( "/$excludedParamPattern/", $paramValue );
}
}
return false;
}
/**
* NOTE: Please use ResourceLoaderGetConfigVars hook instead if possible
* for adding config to the page.
* Adds config variables to JS that depend on current page/request.
*
* Adds a config flag that can disable saving the VectorSidebarVisible
* user preference when the sidebar menu icon is clicked.
*
* @param array &$vars Array of variables to be added into the output.
* @param OutputPage $out OutputPage instance calling the hook
*/
public function onMakeGlobalVariablesScript( &$vars, $out ): void {
$skin = $out->getSkin();
$skinName = $skin->getSkinName();
if ( !self::isVectorSkin( $skinName ) ) {
return;
}
$config = $out->getConfig();
$user = $out->getUser();
if ( $user->isRegistered() && self::isSkinVersionLegacy( $skinName ) ) {
$vars[ 'wgVectorDisableSidebarPersistence' ] =
$config->get(
Constants::CONFIG_KEY_DISABLE_SIDEBAR_PERSISTENCE
);
}
// Must be exposed to CentralNotice banners via mw.config
$vars[ 'wgVector2022PreviewPages' ] = $config->get( 'Vector2022PreviewPages' );
}
/**
* Gets whether the current skin version is the legacy version.
* Should mirror SkinVector::isLegacy
*
* @param string $skinName hint that can be used to detect modern vector.
* @return bool
*/
private static function isSkinVersionLegacy( $skinName ): bool {
return $skinName === Constants::SKIN_NAME_LEGACY;
}
}