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<?php
declare( strict_types=1 );
namespace MediaWiki\Linker;
use MediaWiki\Context\IContextSource;
use MediaWiki\Html\Html;
use MediaWiki\SpecialPage\SpecialPageFactory;
use MediaWiki\Title\TitleValue;
use MediaWiki\User\ExternalUserNames;
use MediaWiki\User\TempUser\TempUserConfig;
use MediaWiki\User\TempUser\TempUserDetailsLookup;
use MediaWiki\User\UserIdentity;
use MessageLocalizer;
use Wikimedia\HtmlArmor\HtmlArmor;
use Wikimedia\IPUtils;
use Wikimedia\MapCacheLRU\MapCacheLRU;
/**
* Service class that renders HTML for user-related links.
* @since 1.44
* @unstable
*/
class UserLinkRenderer {
private TempUserConfig $tempUserConfig;
private SpecialPageFactory $specialPageFactory;
private LinkRenderer $linkRenderer;
private TempUserDetailsLookup $tempUserDetailsLookup;
/**
* Process cache for user links keyed by user name,
* to optimize rendering large pagers with potentially repeated user links.
*
* @var MapCacheLRU
*/
private MapCacheLRU $userLinkCache;
public function __construct(
TempUserConfig $tempUserConfig,
SpecialPageFactory $specialPageFactory,
LinkRenderer $linkRenderer,
TempUserDetailsLookup $tempUserDetailsLookup
) {
$this->tempUserConfig = $tempUserConfig;
$this->specialPageFactory = $specialPageFactory;
$this->linkRenderer = $linkRenderer;
$this->tempUserDetailsLookup = $tempUserDetailsLookup;
// Set a large enough cache size to accommodate long pagers,
// such as Special:RecentChanges with a high limit.
$this->userLinkCache = new MapCacheLRU( 1_000 );
}
/**
* Render a user page link (or user contributions for anonymous and temporary users).
* Returns potentially cached link HTML.
*
* @param UserIdentity $targetUser The user to render a link for.
* @param IContextSource $context
* @param string|null $altUserName Optional text to display instead of the user name,
* or `null` to use the user name.
* @param string[] $attributes Optional extra HTML attributes for the link.
* @return string HTML fragment
*/
public function userLink(
UserIdentity $targetUser,
IContextSource $context,
?string $altUserName = null,
array $attributes = []
): string {
$outputPage = $context->getOutput();
$outputPage->addModuleStyles( [
'mediawiki.interface.helpers.styles',
'mediawiki.interface.helpers.linker.styles'
] );
return $this->userLinkCache->getWithSetCallback(
$this->userLinkCache->makeKey(
$targetUser->getName(),
$altUserName ?? '',
implode( ' ', $attributes )
),
fn () => $this->renderUserLink( $targetUser, $context, $altUserName, $attributes )
);
}
/**
* Render a user page link (or user contributions for anonymous and temporary users),
* without caching.
*
* @param UserIdentity $targetUser The user to render a link for.
* @param MessageLocalizer $messageLocalizer
* @param string|null $altUserName Optional text to display instead of the user name,
* or `null` to use the user name.
* @param string[] $attributes Optional extra HTML attributes for the link.
* @return string HTML fragment
*/
private function renderUserLink(
UserIdentity $targetUser,
MessageLocalizer $messageLocalizer,
?string $altUserName = null,
array $attributes = []
): string {
$userName = $targetUser->getName();
$classes = [ 'mw-userlink' ];
$postfix = '';
if ( $this->tempUserConfig->isTempName( $userName ) ) {
$classes[] = 'mw-tempuserlink';
$attributes['data-mw-target'] = $userName;
// Adjust the styling of expired temporary account links (T358469).
if ( $this->tempUserDetailsLookup->isExpired( $targetUser ) ) {
$classes[] = 'mw-tempuserlink-expired';
$description = $messageLocalizer->msg( 'tempuser-expired-link-tooltip' )->text();
$postfix = Html::element(
'span',
[
'role' => 'presentation',
'class' => 'cdx-tooltip mw-tempuserlink-expired--tooltip',
],
$description
);
$attributes['aria-description'] = $description;
// Hide default link title when rendering expired temporary account links
// to avoid conflicting with the tooltip.
$attributes['title'] = null;
}
$pageName = $this->specialPageFactory->getLocalNameFor( 'Contributions', $userName );
$page = new TitleValue( NS_SPECIAL, $pageName );
} elseif ( !$targetUser->isRegistered() ) {
$page = ExternalUserNames::getUserLinkTitle( $userName );
if ( ExternalUserNames::isExternal( $userName ) ) {
$classes[] = 'mw-extuserlink';
} elseif ( $altUserName === null ) {
$altUserName = IPUtils::prettifyIP( $userName );
}
$classes[] = 'mw-anonuserlink'; // Separate link class for anons (T45179)
} else {
$page = TitleValue::tryNew( NS_USER, strtr( $userName, ' ', '_' ) );
}
// Wrap the output with <bdi> tags for directionality isolation
$linkText =
'<bdi>' . htmlspecialchars( $altUserName ?? $userName ) . '</bdi>'
. $postfix;
if ( isset( $attributes['class'] ) ) {
$classes[] = $attributes['class'];
}
$attributes['class'] = $classes;
if ( $page !== null ) {
return $this->linkRenderer->makeLink( $page, new HtmlArmor( $linkText ), $attributes );
}
return Html::rawElement( 'span', $attributes, $linkText );
}
}