1 files changed, 25 insertions, 0 deletions
diff --git a/resources/src/mediawiki.special/mediawiki.special.changeslist.legend.js b/resources/src/mediawiki.special/mediawiki.special.changeslist.legend.js
new file mode 100644
index 00000000..c9e55111
--- /dev/null
+++ b/resources/src/mediawiki.special/mediawiki.special.changeslist.legend.js
@@ -0,0 +1,25 @@
+/*!
+ * Script for changes list legend
+ */
+
+/* Remember the collapse state of the legend on recent changes and watchlist pages. */
+jQuery( document ).ready( function ( $ ) {
+	var
+		cookieName = 'changeslist-state',
+		cookieOptions = {
+			expires: 30,
+			path: '/'
+		},
+		isCollapsed = $.cookie( cookieName ) === 'collapsed';
+
+	$( '.mw-changeslist-legend' )
+		.makeCollapsible( {
+			collapsed: isCollapsed
+		} )
+		.on( 'beforeExpand.mw-collapsible', function () {
+			$.cookie( cookieName, 'expanded', cookieOptions );
+		} )
+		.on( 'beforeCollapse.mw-collapsible', function () {
+			$.cookie( cookieName, 'collapsed', cookieOptions );
+		} );
+} );