X-Git-Url: https://scripts.mit.edu/gitweb/autoinstallsdev/mediawiki.git/blobdiff_plain/19e297c21b10b1b8a3acad5e73fc71dcb35db44a..6932310fd58ebef145fa01eb76edf7150284d8ea:/resources/src/mediawiki.language/mediawiki.language.fallback.js

diff --git a/resources/src/mediawiki.language/mediawiki.language.fallback.js b/resources/src/mediawiki.language/mediawiki.language.fallback.js
new file mode 100644
index 00000000..b1bab02a
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+++ b/resources/src/mediawiki.language/mediawiki.language.fallback.js
@@ -0,0 +1,35 @@
+/*
+ * Language-fallback-chain-related utilities for mediawiki.language.
+ */
+( function ( mw, $ ) {
+	/**
+	 * @class mw.language
+	 */
+
+	$.extend( mw.language, {
+
+		/**
+		 * Get the language fallback chain for current UI language (not including the language itself).
+		 *
+		 * @return {string[]} List of language keys, e.g. `['de', 'en']`
+		 */
+		getFallbackLanguages: function () {
+			return mw.language.getData(
+				mw.config.get( 'wgUserLanguage' ),
+				'fallbackLanguages'
+			) || [];
+		},
+
+		/**
+		 * Get the language fallback chain for current UI language, including the language itself.
+		 *
+		 * @return {string[]} List of language keys, e.g. `['pfl', de', 'en']`
+		 */
+		getFallbackLanguageChain: function () {
+			return [ mw.config.get( 'wgUserLanguage' ) ]
+				.concat( mw.language.getFallbackLanguages() );
+		}
+
+	} );
+
+}( mediaWiki, jQuery ) );