Optionally exclude elements from applying webfonts

* Updates jquery.webfonts from upstream
* Introduces wgULSNoWebfontsSelectors configuration variable. It
  takes an array of jquery selector to which webfonts will not be
  applied if defined.

Change-Id: I0dc263f84620af4077f52e18eeb0f986ff0f13b9

UniversalLanguageSelector.hooks.php

@@ -248,7 +248,7 @@ class UniversalLanguageSelectorHooks {
 	 * @return bool
 	 */
 	public static function addConfig( &$vars ) {
-		global $wgULSGeoService, $wgULSIMEEnabled, $wgULSPosition,
+		global $wgULSGeoService, $wgULSIMEEnabled, $wgULSPosition, $wgULSNoWebfontsSelectors,
 			$wgULSAnonCanChangeLanguage, $wgULSEventLogging, $wgULSNoImeSelectors;
 
 		// Place constant stuff here (not depending on request context)
@@ -260,6 +260,7 @@ class UniversalLanguageSelectorHooks {
 		$vars['wgULSAnonCanChangeLanguage'] = $wgULSAnonCanChangeLanguage;
 		$vars['wgULSEventLogging'] = $wgULSEventLogging;
 		$vars['wgULSNoImeSelectors'] = $wgULSNoImeSelectors;
+		$vars['wgULSNoWebfontsSelectors'] = $wgULSNoWebfontsSelectors;
 
 		return true;
 	}

UniversalLanguageSelector.php

@@ -130,6 +130,14 @@ $wgULSEventLogging = false;
  */
 $wgULSNoImeSelectors = array( '#wpCaptchaWord' );
 
+
+/**
+ * Array of jQuery selectors of elements on which webfonts must not be applied.
+ * By default exclude the interwiki language links.
+ * @since 2013.09
+ */
+$wgULSNoWebfontsSelectors = array( '#p-lang li > a' );
+
 $dir = __DIR__;
 
 // Internationalization

lib/jquery.webfonts.js

@@ -190,6 +190,10 @@
 				var fontFamilyStyle, fontFamily,
 					$element = $( element );
 
+				if ( $element.is( webfonts.options.exclude ) ) {
+					return;
+				}
+
 				// Note: it depends on the browser whether this returns font names
 				// which don't exist. In Chrome it does, while in Opera it doesn't.
 				fontFamilyStyle = $element.css( 'fontFamily' );

resources/js/ext.uls.webfonts.js

@@ -70,12 +70,17 @@
 				return font;
 			},
 			exclude: ( function () {
+				var excludes = $.fn.webfonts.defaults.exclude;
+
 				if ( mw.user.options.get( 'editfont' ) !== 'default' ) {
 					// Exclude textboxes from webfonts if user has edit area font option
 					// set using 'Preferences' page
-					return 'textarea';
+					excludes = ( excludes )
+						? excludes + ',textarea'
+						: 'textarea';
 				}
-				return $.fn.webfonts.defaults.exclude;
+
+				return excludes;
 			}() )
 		} );
 		$( 'body' ).webfonts();
@@ -87,7 +92,8 @@
 			// MediaWiki specific overrides for jquery.webfonts
 			$.extend( $.fn.webfonts.defaults, {
 				repository: mediawikiFontRepository,
-				fontStack: $( 'body' ).css( 'font-family' ).split( /, /g )
+				fontStack: $( 'body' ).css( 'font-family' ).split( /, /g ),
+				exclude: mw.config.get( 'wgULSNoWebfontsSelectors' ).join( ', ' )
 			} );
 
 			mw.webfonts.preferences.load();