Transmit current autonym via ResourceLoader instead of config var

This avoids loading of wgULSCurrentAutonym in every HTML page.

Change-Id: I8f3a28e3b46f41926bcbe54ace493a33f9ba4566

extension.json

@@ -228,7 +228,12 @@
 				"js/ext.uls.launch.js",
 				"js/ext.uls.actions.menu.js",
 				"js/ext.uls.actions.menu.item.js",
-				"js/ext.uls.actions.menu.items.registry.js"
+				"js/ext.uls.actions.menu.items.registry.js",
+				{
+					"name": "data.json",
+					"callback": "UniversalLanguageSelector\\Hooks::getModuleData",
+					"versionCallback": "UniversalLanguageSelector\\Hooks::getModuleDataSummary"
+				}
 			],
 			"styles": [
 				"css/ext.uls.interface.less",

includes/Hooks.php

@@ -32,8 +32,10 @@ use MediaWiki\Hook\MakeGlobalVariablesScriptHook;
 use MediaWiki\Hook\UserGetLanguageObjectHook;
 use MediaWiki\Html\Html;
 use MediaWiki\Languages\LanguageNameUtils;
+use MediaWiki\MediaWikiServices;
 use MediaWiki\Output\OutputPage;
 use MediaWiki\Preferences\Hook\GetPreferencesHook;
+use MediaWiki\ResourceLoader\Context;
 use MediaWiki\ResourceLoader\Hook\ResourceLoaderGetConfigVarsHook;
 use MediaWiki\Skins\Hook\SkinAfterPortletHook;
 use MediaWiki\User\User;
@@ -448,13 +450,9 @@ class Hooks implements
 			$vars['wgULSBabelLanguages'] = array_keys( $userLanguageInfo );
 		}
 
-		// An optimization to avoid loading all of uls.data just to get the autonym
-		$langCode = $out->getLanguage()->getCode();
-		$vars['wgULSCurrentAutonym'] = $this->languageNameUtils->getLanguageName( $langCode );
-
 		$setLangCode = $this->getSetLang( $out );
 		if ( $setLangCode ) {
-			$vars['wgULSCurrentLangCode'] = $langCode;
+			$vars['wgULSCurrentLangCode'] = $out->getLanguage()->getCode();
 			$vars['wgULSSetLangCode'] = $setLangCode;
 			$vars['wgULSSetLangName'] = $this->languageNameUtils->getLanguageName( $setLangCode );
 		}
@@ -582,4 +580,28 @@ class Hooks implements
 
 		return null;
 	}
+
+	/**
+	 * @param Context $context
+	 * @param Config $config
+	 * @return array
+	 */
+	public static function getModuleData( Context $context, Config $config ): array {
+		$languageNameUtils = MediaWikiServices::getInstance()->getLanguageNameUtils();
+		return [
+			'currentAutonym' => $languageNameUtils->getLanguageName( $context->getLanguage() ),
+		];
+	}
+
+	/**
+	 * @param Context $context
+	 * @param Config $config
+	 * @return array
+	 */
+	public static function getModuleDataSummary( Context $context, Config $config ): array {
+		return [
+			'currentAutonym' => $context->getLanguage(),
+		];
+	}
+
 }

resources/js/ext.uls.interface.js

@@ -505,7 +505,7 @@
 		previousLanguage = mw.storage.get( 'uls-previous-language-code' );
 		currentLanguage = mw.config.get( 'wgUserLanguage' );
 		previousAutonym = mw.storage.get( 'uls-previous-language-autonym' );
-		currentAutonym = mw.config.get( 'wgULSCurrentAutonym' );
+		currentAutonym = require( '../data.json' ).currentAutonym;
 
 		// If storage is empty, i.e. first visit, then store the current language
 		// immediately so that we know when it changes.