[Search][A11y] Allow keyboard navigation between searchbar and other components

PiperOrigin-RevId: 811869184

Author: imhappi

catalog/java/io/material/catalog/search/res/layout/cat_search_recycler_fragment.xml

@@ -39,7 +39,8 @@
       android:layout_height="wrap_content"
       android:fitsSystemWindows="true"
       app:liftOnScroll="false"
-      app:statusBarForeground="?attr/colorSurface">
+      app:statusBarForeground="?attr/colorSurface"
+      android:touchscreenBlocksFocus="false">
 
     <com.google.android.material.search.SearchBar
         android:id="@+id/open_search_bar"

lib/java/com/google/android/material/search/SearchBar.java

@@ -1061,6 +1061,9 @@ public boolean onDependentViewChanged(
       if (!initialized && dependency instanceof AppBarLayout) {
         initialized = true;
         AppBarLayout appBarLayout = (AppBarLayout) dependency;
+        // Necessary to enable keyboard navigation across searchbar and other elements due to
+        // toolbar being a keyboard navigation cluster from API 26+
+        appBarLayout.setTouchscreenBlocksFocus(false);
         setAppBarLayoutTransparent(appBarLayout);
       }
       return changed;

lib/java/com/google/android/material/search/res/values/styles.xml

@@ -62,13 +62,15 @@
     <item name="android:paddingStart">4dp</item>
     <item name="android:paddingEnd">4dp</item>
     <item name="android:minHeight">64dp</item>
+    <item name="android:touchscreenBlocksFocus">false</item>
   </style>
 
   <style name="Widget.Material3Expressive.Toolbar.AppBarWithSearch">
     <item name="buttonGravity">center_vertical</item>
     <item name="android:layout_marginEnd">0dp</item>
     <item name="layout_scrollFlags">scroll|snap|enterAlways</item>
     <item name="materialThemeOverlay">@style/ThemeOverlay.Material3.Search</item>
+    <item name="android:touchscreenBlocksFocus">false</item>
   </style>
 
   <style name="ThemeOverlay.Material3Expressive.AppBarWithSearch" parent="">
@@ -96,6 +98,9 @@
     <item name="materialThemeOverlay">@style/ThemeOverlay.Material3.Search</item>
     <item name="liftOnScroll">false</item>
     <item name="liftOnScrollColor">?attr/colorSurfaceContainerHighest</item>
+    <!-- Necessary to enable keyboard navigation across searchbar and other elements due to toolbar
+         being a keyboard navigation cluster from API 26+ -->
+    <item name="android:touchscreenBlocksFocus">false</item>
 
     <!-- On newer API levels, hide shadows while keeping elevation. -->
     <item name="android:outlineAmbientShadowColor" tools:targetApi="p">@android:color/transparent</item>