Merge "[a11y] When multi-user switcher is selected in lockscreen and Talkback is enabled, play helpful explanation." into tm-qpr-dev am: 168133e3eb am: 432c0bb3d8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19135806

Change-Id: I8e8353b5ae17eac6bba2c11371fae737482dae0c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

packages/SystemUI/res-keyguard/layout/keyguard_bouncer_user_switcher.xml

@@ -35,7 +35,7 @@
 
     <!-- need to keep this outer view in order to have a correctly sized anchor
          for the dropdown menu, as well as dropdown background in the right place -->
-    <LinearLayout
+    <com.android.keyguard.KeyguardUserSwitcherAnchor
         android:id="@+id/user_switcher_anchor"
         android:orientation="horizontal"
         android:layout_height="wrap_content"
@@ -48,7 +48,7 @@
           android:textDirection="locale"
           android:layout_width="@dimen/bouncer_user_switcher_width"
           android:layout_height="wrap_content" />
-    </LinearLayout>>
+    </com.android.keyguard.KeyguardUserSwitcherAnchor>
 
 </LinearLayout>
 

packages/SystemUI/res/values/strings.xml

@@ -887,7 +887,8 @@
     <!-- Accessibility label for the button that opens the user switcher. -->
     <string name="accessibility_multi_user_switch_switcher">Switch user</string>
 
-    <!-- Accessibility label for the button that opens the user switcher and announces the current user. -->
+    <!-- Accessibility role description for the element that opens the user switcher list. -->
+    <string name="accessibility_multi_user_list_switcher">pulldown menu</string>
 
     <!-- Accessibility label for the user icon on the lock screen. -->
 

packages/SystemUI/src/com/android/keyguard/KeyguardSecurityContainer.java

@@ -1129,11 +1129,13 @@ public class KeyguardSecurityContainer extends FrameLayout {
                 Log.e(TAG, "Current user in user switcher is null.");
                 return;
             }
+            final String currentUserName = mUserSwitcherController.getCurrentUserName();
             Drawable userIcon = findUserIcon(currentUser.info.id);
             ((ImageView) mView.findViewById(R.id.user_icon)).setImageDrawable(userIcon);
-            mUserSwitcher.setText(mUserSwitcherController.getCurrentUserName());
+            mUserSwitcher.setText(currentUserName);
+
+            KeyguardUserSwitcherAnchor anchor = mView.findViewById(R.id.user_switcher_anchor);
 
-            ViewGroup anchor = mView.findViewById(R.id.user_switcher_anchor);
             BaseUserAdapter adapter = new BaseUserAdapter(mUserSwitcherController) {
                 @Override
                 public View getView(int position, View convertView, ViewGroup parent) {
@@ -1213,7 +1215,6 @@ public class KeyguardSecurityContainer extends FrameLayout {
 
             anchor.setOnClickListener((v) -> {
                 if (mFalsingManager.isFalseTap(LOW_PENALTY)) return;
-
                 mPopup = new KeyguardUserSwitcherPopupMenu(v.getContext(), mFalsingManager);
                 mPopup.setAnchorView(anchor);
                 mPopup.setAdapter(adapter);

packages/SystemUI/src/com/android/keyguard/KeyguardUserSwitcherAnchor.kt

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.keyguard
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.accessibility.AccessibilityNodeInfo
+import android.widget.LinearLayout
+import androidx.core.view.accessibility.AccessibilityNodeInfoCompat
+import com.android.systemui.R
+
+/**
+ * Custom View for the multi-user switcher pull-down menu anchor
+ */
+class KeyguardUserSwitcherAnchor @JvmOverloads constructor(
+        context: Context,
+        attrs: AttributeSet? = null
+) : LinearLayout(context, attrs) {
+
+    override fun createAccessibilityNodeInfo(): AccessibilityNodeInfo {
+        val info = super.createAccessibilityNodeInfo()
+        AccessibilityNodeInfoCompat.wrap(info).roleDescription =
+                context.getString(R.string.accessibility_multi_user_list_switcher)
+        return info
+    }
+}

packages/SystemUI/tests/src/com/android/keyguard/KeyguardUserSwitcherAnchorTest.kt

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.keyguard
+
+import android.testing.AndroidTestingRunner
+import androidx.core.view.accessibility.AccessibilityNodeInfoCompat
+import androidx.test.filters.SmallTest
+import com.android.systemui.R
+import com.android.systemui.SysuiTestCase
+import com.google.common.truth.Truth.assertThat
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidTestingRunner::class)
+@SmallTest
+class KeyguardUserSwitcherAnchorTest : SysuiTestCase() {
+
+    private lateinit var keyguardUserSwitcherAnchor: KeyguardUserSwitcherAnchor
+
+    @Before
+    fun setUp() {
+        keyguardUserSwitcherAnchor = KeyguardUserSwitcherAnchor(context)
+    }
+
+    @Test
+    fun roleDescription_is_set_to_pulldown_menu() {
+        // GIVEN
+        val roleDescriptionString =
+                context.getString(R.string.accessibility_multi_user_list_switcher)
+
+        // WHEN
+        val result = keyguardUserSwitcherAnchor.createAccessibilityNodeInfo()
+
+        // THEN
+        assertThat(
+                AccessibilityNodeInfoCompat.wrap(result).roleDescription
+        ).isEqualTo(roleDescriptionString)
+    }
+}