Fix accessiblity issue around work tab

1. Instead of always announcing "Apps list", we now announce
"personal apps list" and "work apps list" if tab is there.
2. Fix an issue that "personal" and "work" are announced twice.
3. Work footer is now announced as a group

FIX: 71703082

Change-Id: I0240bc04df09a5599540cfe67f0f48156f285548
diff --git a/quickstep/src/com/android/launcher3/uioverrides/AllAppsState.java b/quickstep/src/com/android/launcher3/uioverrides/AllAppsState.java
index ea03a76..31261d9 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/AllAppsState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/AllAppsState.java
@@ -25,6 +25,7 @@
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.R;
+import com.android.launcher3.allapps.AllAppsContainerView;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
 
 /**
@@ -58,7 +59,8 @@
 
     @Override
     public String getDescription(Launcher launcher) {
-        return launcher.getString(R.string.all_apps_button_label);
+        AllAppsContainerView appsView = launcher.getAppsView();
+        return appsView.getDescription();
     }
 
     @Override
diff --git a/res/layout/work_tab_footer.xml b/res/layout/work_tab_footer.xml
index 21ff55e..379e9d0 100644
--- a/res/layout/work_tab_footer.xml
+++ b/res/layout/work_tab_footer.xml
@@ -17,6 +17,7 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:focusable="true"
     android:paddingBottom="@dimen/all_apps_work_profile_tab_footer_bottom_padding"
     android:paddingLeft="@dimen/dynamic_grid_cell_padding_x"
     android:paddingRight="@dimen/dynamic_grid_cell_padding_x"
diff --git a/res/values/strings.xml b/res/values/strings.xml
index d8b68e7..c070064 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -80,6 +80,9 @@
 
     <!-- All applications label -->
     <string name="all_apps_button_label">Apps list</string>
+    <string name="all_apps_button_personal_label">Personal apps list</string>
+    <string name="all_apps_button_work_label">Work apps list</string>
+
     <!-- Label for button in all applications label to go back home (to the workspace / desktop)
          for accessibilty (spoken when the button gets focus). -->
     <string name="all_apps_home_button_label">Home</string>
diff --git a/src/com/android/launcher3/allapps/AllAppsContainerView.java b/src/com/android/launcher3/allapps/AllAppsContainerView.java
index 3fe5d7a..39a8df3 100644
--- a/src/com/android/launcher3/allapps/AllAppsContainerView.java
+++ b/src/com/android/launcher3/allapps/AllAppsContainerView.java
@@ -25,6 +25,7 @@
 import android.os.Process;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.annotation.StringRes;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.text.Selection;
@@ -192,6 +193,19 @@
         return false;
     }
 
+    public String getDescription() {
+        @StringRes int descriptionRes;
+        if (mUsingTabs) {
+            descriptionRes =
+                    mViewPager.getNextPage() == 0
+                            ? R.string.all_apps_button_personal_label
+                            : R.string.all_apps_button_work_label;
+        } else {
+            descriptionRes = R.string.all_apps_button_label;
+        }
+        return getContext().getString(descriptionRes);
+    }
+
     public AllAppsRecyclerView getActiveRecyclerView() {
         if (!mUsingTabs || mViewPager.getNextPage() == 0) {
             return mAH[AdapterHolder.MAIN].recyclerView;
diff --git a/src/com/android/launcher3/allapps/AllAppsPagedView.java b/src/com/android/launcher3/allapps/AllAppsPagedView.java
index 3b4450b..b2e35a4 100644
--- a/src/com/android/launcher3/allapps/AllAppsPagedView.java
+++ b/src/com/android/launcher3/allapps/AllAppsPagedView.java
@@ -17,10 +17,9 @@
 
 import android.content.Context;
 import android.util.AttributeSet;
-
 import android.view.MotionEvent;
+
 import com.android.launcher3.PagedView;
-import com.android.launcher3.R;
 
 public class AllAppsPagedView extends PagedView<PersonalWorkSlidingTabStrip> {
 
@@ -42,8 +41,8 @@
 
     @Override
     protected String getCurrentPageDescription() {
-        return getResources().getString(
-                getNextPage() == 0 ? R.string.all_apps_personal_tab : R.string.all_apps_work_tab);
+        // Not necessary, tab-bar already has two tabs with their own descriptions.
+        return "";
     }
 
     @Override