From 955cce6e0b72fe6b3037a885a555bc841d112e08 Mon Sep 17 00:00:00 2001
From: Wei Yang <yawei@microsoft.com>
Date: Wed, 28 Nov 2018 20:27:12 +0800
Subject: [PATCH] add talkback navigation for links and header

1. add role description for heading
2. add talkback navigation support for link and header
---
 .../uimanager/AccessibilityDelegateUtil.java  | 27 ++++++++++++++++++-
 .../res/views/uimanager/values/strings.xml    |  4 +++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityDelegateUtil.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityDelegateUtil.java
index 617773b24eb0fc..a2a34ac512b5e4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityDelegateUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityDelegateUtil.java
@@ -9,6 +9,9 @@
 import android.support.v4.view.AccessibilityDelegateCompat;
 import android.support.v4.view.ViewCompat;
 import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
+import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat.CollectionItemInfoCompat;
+import android.text.SpannableString;
+import android.text.style.URLSpan;
 import android.view.View;
 import com.facebook.react.R;
 import java.util.Locale;
@@ -98,7 +101,6 @@ public static void setDelegate(final View view) {
           public void onInitializeAccessibilityNodeInfo(
             View host, AccessibilityNodeInfoCompat info) {
             super.onInitializeAccessibilityNodeInfo(host, info);
-            setRole(info, accessibilityRole, view.getContext());
             if (!(accessibilityHint == null)) {
               String contentDescription=(String)info.getContentDescription();
               if (contentDescription != null) {
@@ -108,6 +110,8 @@ public void onInitializeAccessibilityNodeInfo(
                 info.setContentDescription(accessibilityHint);
               }
             }
+
+            setRole(info, accessibilityRole, view.getContext());
           }
         });
     }
@@ -127,6 +131,18 @@ public static void setRole(AccessibilityNodeInfoCompat nodeInfo, AccessibilityRo
     if (Locale.getDefault().getLanguage().equals(new Locale("en").getLanguage())) {
       if (role.equals(AccessibilityRole.LINK)) {
         nodeInfo.setRoleDescription(context.getString(R.string.link_description));
+
+        if (nodeInfo.getContentDescription() != null) {
+          SpannableString spannable = new SpannableString(nodeInfo.getContentDescription());
+          spannable.setSpan(new URLSpan(""), 0, spannable.length(), 0);
+          nodeInfo.setContentDescription(spannable);
+        }
+
+        if (nodeInfo.getText() != null) {
+          SpannableString spannable = new SpannableString(nodeInfo.getText());
+          spannable.setSpan(new URLSpan(""), 0, spannable.length(), 0);
+          nodeInfo.setText(spannable);
+        }
       }
       if (role.equals(AccessibilityRole.SEARCH)) {
         nodeInfo.setRoleDescription(context.getString(R.string.search_description));
@@ -140,6 +156,15 @@ public static void setRole(AccessibilityNodeInfoCompat nodeInfo, AccessibilityRo
       if (role.equals(AccessibilityRole.ADJUSTABLE)) {
         nodeInfo.setRoleDescription(context.getString(R.string.adjustable_description));
       }
+      if (role.equals(AccessibilityRole.HEADER)) {
+        nodeInfo.setRoleDescription(context.getString(R.string.header_description));
+
+        final AccessibilityNodeInfoCompat.CollectionItemInfoCompat itemInfo =
+        AccessibilityNodeInfoCompat.CollectionItemInfoCompat.obtain(
+                0, 1, 0, 1,
+                true);
+        nodeInfo.setCollectionItemInfo(itemInfo);
+      }
     }
     if (role.equals(AccessibilityRole.IMAGEBUTTON)) {
       nodeInfo.setClickable(true);
diff --git a/ReactAndroid/src/main/res/views/uimanager/values/strings.xml b/ReactAndroid/src/main/res/views/uimanager/values/strings.xml
index 60c9e805311896..d180d2a703b5f4 100644
--- a/ReactAndroid/src/main/res/views/uimanager/values/strings.xml
+++ b/ReactAndroid/src/main/res/views/uimanager/values/strings.xml
@@ -20,4 +20,8 @@
     name="adjustable_description"
     translatable="false"
     >Adjustable</string>
+  <string
+    name="header_description"
+    translatable="false"
+    >Heading</string>
 </resources>