fix(ui-grid-menu-button.js): Change "Columns:" item to a heading.

Fix accessibility of "Columns:" menu item by making it a heading instead of a button since it has no
action.

Author: Portugal, Marcelo

src/js/core/directives/ui-grid-menu-button.js

@@ -257,7 +257,8 @@ angular.module('ui.grid')
       // add header for columns
       showHideColumns.push({
         title: i18nService.getSafeText('gridMenu.columns'),
-        order: 300
+        order: 300,
+        templateUrl: 'ui-grid/ui-grid-menu-header-item'
       });
 
       $scope.grid.options.gridMenuTitleFilter = $scope.grid.options.gridMenuTitleFilter ? $scope.grid.options.gridMenuTitleFilter : function( title ) { return title; };

src/js/core/directives/ui-grid-menu.js

@@ -220,7 +220,7 @@ function ($compile, $timeout, $window, $document, gridUtil, uiGridConstants, i18
 }])
 
 .directive('uiGridMenuItem', ['gridUtil', '$compile', 'i18nService', function (gridUtil, $compile, i18nService) {
-  var uiGridMenuItem = {
+  return {
     priority: 0,
     scope: {
       name: '=',
@@ -321,8 +321,6 @@ function ($compile, $timeout, $window, $document, gridUtil, uiGridConstants, i18
       };
     }
   };
-
-  return uiGridMenuItem;
 }]);
 
 })();

src/less/menu.less

@@ -57,14 +57,18 @@
   list-style-type: none;
 
   li {
-    padding: 0px;
-    button {
+    padding: 0;
+    .ui-grid-menu-item {
       color: @menuTextColor;
       min-width: 100%;
       padding: 8px;
       text-align: left;
       background: transparent;
       border: none;
+      cursor: default;
+    }
+    button.ui-grid-menu-item {
+      cursor: pointer;
 
       // Show a shadow when hovering over a menu item
       &:hover,
@@ -78,7 +82,7 @@
   }
 
   // Show a bottom border on all but the last menu item
-  li:not(:last-child) > button {
+  li:not(:last-child) > .ui-grid-menu-item {
     border-bottom: @gridBorderWidth solid @borderColor;
   }
 }

src/templates/ui-grid/ui-grid-menu-header-item.html

@@ -0,0 +1,12 @@
+<li role="menuitem">
+	<div
+		class="ui-grid-menu-item"
+		role="heading"
+		aria-level="2"
+		ng-show="itemShown()">
+		<i aria-hidden='true'>
+			&nbsp;
+		</i>
+		<span ng-bind="label()"></span>
+	</div>
+</li>

test/unit/core/directives/ui-grid-menu-button.spec.js

@@ -219,6 +219,7 @@ describe('ui-grid-menu-button uiGridGridMenuService', function() {
 
 				expect(menuItems[4].title).toEqual('Clear all filters', 'Menu item 4 Clear all filters');
 				expect(menuItems[5].title).toEqual('Columns:', 'Menu item 5 should be header');
+				expect(menuItems[5].templateUrl).toEqual('ui-grid/ui-grid-menu-header-item');
 				expect(menuItems[6].title.toLowerCase()).toEqual('fn_col1', 'Menu item 5 should be col1');
 				expect(menuItems[7].title.toLowerCase()).toEqual('fn_col3', 'Menu item 6 should be col3');
 				expect(menuItems[8].title.toLowerCase()).toEqual('fn_col4', 'Menu item 7 should be col4');
@@ -243,6 +244,7 @@ describe('ui-grid-menu-button uiGridGridMenuService', function() {
 				expect(menuItems.length).toEqual(6, 'Should be 6 items, 1 columns header, 4 columns that allow hiding and clear all filters');
 				expect(menuItems[0].title).toEqual('Clear all filters', 'Menu item 0 should be Clear all filters');
 				expect(menuItems[1].title).toEqual('Columns:', 'Menu item 1 should be header');
+				expect(menuItems[1].templateUrl).toEqual('ui-grid/ui-grid-menu-header-item');
 				expect(menuItems[2].title).toEqual('', 'Promise not resolved');
 				expect(menuItems[3].title).toEqual('', 'Promise not resolved');
 				expect(menuItems[4].title).toEqual('', 'Promise not resolved');
@@ -256,6 +258,7 @@ describe('ui-grid-menu-button uiGridGridMenuService', function() {
 				expect(menuItems.length).toEqual(6, 'Should be 10 items, 1 columns header, 4 columns that allow hiding and Clean all filters');
 				expect(menuItems[0].title).toEqual('Clear all filters', 'Menu item 0 should be Clear all filters');
 				expect(menuItems[1].title).toEqual('Columns:', 'Menu item 0 should be header');
+				expect(menuItems[1].templateUrl).toEqual('ui-grid/ui-grid-menu-header-item');
 				expect(menuItems[2].title).toEqual('resolve_0', 'Promise now resolved');
 				expect(menuItems[3].title).toEqual('resolve_1', 'Promise now resolved');
 				expect(menuItems[4].title).toEqual('resolve_2', 'Promise now resolved');