From 40024703cf10e59875f5011810c8cba355169145 Mon Sep 17 00:00:00 2001
From: Kristiyan Kostadinov <crisbeto@users.noreply.github.com>
Date: Thu, 7 Feb 2019 20:48:02 +0100
Subject: [PATCH] fix(autocomplete): set aria-haspopup (#15079)

Based on the [autocomplete example from the a11y guidelines](https://www.w3.org/TR/wai-aria-practices-1.1/examples/combobox/aria1.0pattern/combobox-autocomplete-both.html), adds `aria-haspopup` to the autocomplete trigger input.
---
 src/lib/autocomplete/autocomplete-trigger.ts | 1 +
 src/lib/autocomplete/autocomplete.spec.ts    | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/src/lib/autocomplete/autocomplete-trigger.ts b/src/lib/autocomplete/autocomplete-trigger.ts
index 2283fc670ef..0f473911a06 100644
--- a/src/lib/autocomplete/autocomplete-trigger.ts
+++ b/src/lib/autocomplete/autocomplete-trigger.ts
@@ -105,6 +105,7 @@ export function getMatAutocompleteMissingPanelError(): Error {
     '[attr.aria-activedescendant]': '(panelOpen && activeOption) ? activeOption.id : null',
     '[attr.aria-expanded]': 'autocompleteDisabled ? null : panelOpen.toString()',
     '[attr.aria-owns]': '(autocompleteDisabled || !panelOpen) ? null : autocomplete?.id',
+    '[attr.aria-haspopup]': '!autocompleteDisabled',
     // Note: we use `focusin`, as opposed to `focus`, in order to open the panel
     // a little earlier. This avoids issues where IE delays the focusing of the input.
     '(focusin)': '_handleFocus()',
diff --git a/src/lib/autocomplete/autocomplete.spec.ts b/src/lib/autocomplete/autocomplete.spec.ts
index 63a1c3ac912..7aea32ce1fb 100644
--- a/src/lib/autocomplete/autocomplete.spec.ts
+++ b/src/lib/autocomplete/autocomplete.spec.ts
@@ -482,6 +482,15 @@ describe('MatAutocomplete', () => {
       expect(fixture.componentInstance.stateCtrl.value).toBe('hello');
     });
 
+    it('should set aria-haspopup depending on whether the autocomplete is disabled', () => {
+      expect(input.getAttribute('aria-haspopup')).toBe('true');
+
+      fixture.componentInstance.autocompleteDisabled = true;
+      fixture.detectChanges();
+
+      expect(input.getAttribute('aria-haspopup')).toBe('false');
+    });
+
   });
 
   it('should have the correct text direction in RTL', () => {