1 files changed, 54 insertions, 0 deletions
diff --git a/resources/src/mediawiki.action/mediawiki.action.edit.collapsibleFooter.js b/resources/src/mediawiki.action/mediawiki.action.edit.collapsibleFooter.js
new file mode 100644
index 00000000..7ae51aba
--- /dev/null
+++ b/resources/src/mediawiki.action/mediawiki.action.edit.collapsibleFooter.js
@@ -0,0 +1,54 @@
+jQuery( document ).ready( function ( $ ) {
+	var collapsibleLists, i, handleOne;
+
+	// Collapsible lists of categories and templates
+	collapsibleLists = [
+		{
+			$list: $( '.templatesUsed ul' ),
+			$toggler: $( '.mw-templatesUsedExplanation' ),
+			cookieName: 'templates-used-list'
+		},
+		{
+			$list: $( '.hiddencats ul' ),
+			$toggler: $( '.mw-hiddenCategoriesExplanation' ),
+			cookieName: 'hidden-categories-list'
+		},
+		{
+			$list: $( '.preview-limit-report-wrapper' ),
+			$toggler: $( '.mw-limitReportExplanation' ),
+			cookieName: 'preview-limit-report'
+		}
+	];
+
+	handleOne = function ( $list, $toggler, cookieName ) {
+		var isCollapsed = $.cookie( cookieName ) !== 'expanded';
+
+		// Style the toggler with an arrow icon and add a tabIndex and a role for accessibility
+		$toggler.addClass( 'mw-editfooter-toggler' ).prop( 'tabIndex', 0 ).attr( 'role', 'button' );
+		$list.addClass( 'mw-editfooter-list' );
+
+		$list.makeCollapsible( {
+			$customTogglers: $toggler,
+			linksPassthru: true,
+			plainMode: true,
+			collapsed: isCollapsed
+		} );
+
+		$toggler.addClass( isCollapsed ? 'mw-icon-arrow-collapsed' : 'mw-icon-arrow-expanded' );
+
+		$list.on( 'beforeExpand.mw-collapsible', function () {
+			$toggler.removeClass( 'mw-icon-arrow-collapsed' ).addClass( 'mw-icon-arrow-expanded' );
+			$.cookie( cookieName, 'expanded' );
+		} );
+
+		$list.on( 'beforeCollapse.mw-collapsible', function () {
+			$toggler.removeClass( 'mw-icon-arrow-expanded' ).addClass( 'mw-icon-arrow-collapsed' );
+			$.cookie( cookieName, 'collapsed' );
+		} );
+	};
+
+	for ( i = 0; i < collapsibleLists.length; i++ ) {
+		// Pass to a function for iteration-local variables
+		handleOne( collapsibleLists[i].$list, collapsibleLists[i].$toggler, collapsibleLists[i].cookieName );
+	}
+} );