From 5c6c24d314bfec341ec658f8bf51bfeb9acb0cd0 Mon Sep 17 00:00:00 2001
From: MatmaRex <matma.rex@gmail.com>
Date: Fri, 14 Jun 2013 01:47:03 +0200
Subject: [PATCH] RegionSelector: Scroll to appropriate area instead of
 rebuilding the list

This has been suggested on bug 39925.
---
 src/jquery.uls.regionfilter.js | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/jquery.uls.regionfilter.js b/src/jquery.uls.regionfilter.js
index abc633d..33087b4 100644
--- a/src/jquery.uls.regionfilter.js
+++ b/src/jquery.uls.regionfilter.js
@@ -35,7 +35,7 @@
 		this.options = $.extend( {}, $.fn.regionselector.defaults, options );
 		this.$element.addClass( 'regionselector' );
 		this.regions = [];
-		this.cache= null;
+		this.cache = null;
 		this.regionGroup = this.$element.data( 'regiongroup' );
 		this.init();
 		this.listen();
@@ -149,9 +149,12 @@
 				return;
 			}
 
-			// Re-populate the list of languages
-			this.options.$target.empty();
-			this.show();
+			// Scroll to appropriate area
+			this.options.$target.$element
+				.find( '#' + this.regions[0] )
+				.get( 0 )
+				.scrollIntoView( true, { behavior: 'smooth' } );
+
 			// Make the selected region (and it only) active
 			$( '.regionselector' ).removeClass( 'active' );