Apply layoutDirection to buttons container

For some reason layout direction isn't propagated to subviews correctly in the Wix app.
This commit is mostly a workaround, it sets the layout direction on the ViewGroup containing TopBar buttons
so that they appear in the right order in RTL.

lib/android/app/src/main/java/com/reactnativenavigation/views/titlebar/TitleBar.java

 import android.graphics.PorterDuffColorFilter;
 import android.graphics.Typeface;
 import android.graphics.drawable.Drawable;
-import androidx.appcompat.widget.ActionMenuView;
-import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.View;
 import android.view.ViewGroup;
 
 import javax.annotation.Nullable;
 
+import androidx.appcompat.widget.ActionMenuView;
+import androidx.appcompat.widget.Toolbar;
+
+import static com.reactnativenavigation.utils.ObjectUtils.perform;
 import static com.reactnativenavigation.utils.UiUtils.runOnPreDrawOnce;
+import static com.reactnativenavigation.utils.ViewUtils.findChildByClass;
 
 @SuppressLint("ViewConstructor")
 public class TitleBar extends Toolbar {
         }
     }
 
+    @Override
+    public void setLayoutDirection(int layoutDirection) {
+        super.setLayoutDirection(layoutDirection);
+        perform(findChildByClass(this, ActionMenuView.class), buttonsContainer -> buttonsContainer.setLayoutDirection(layoutDirection));
+    }
+
     @Nullable
     public TextView findTitleTextView() {
         List<TextView> children = ViewUtils.findChildrenByClass(this, TextView.class, textView -> textView.getText().equals(getTitle()));

lib/android/app/src/test/java/com/reactnativenavigation/TestUtils.java

 
 import android.app.Activity;
 import android.content.Context;
+import android.view.View;
+import android.view.ViewGroup;
 
 import com.reactnativenavigation.mocks.TitleBarReactViewCreatorMock;
 import com.reactnativenavigation.mocks.TopBarBackgroundViewCreatorMock;
 import com.reactnativenavigation.views.StackLayout;
 import com.reactnativenavigation.views.topbar.TopBar;
 
+import org.mockito.Mockito;
+
 public class TestUtils {
     public static StackControllerBuilder newStackController(Activity activity) {
         TopBarController topBarController = new TopBarController() {
     public static void hideBackButton(ViewController viewController) {
         viewController.options.topBar.buttons.back.visible = new Bool(false);
     }
+
+    public static <T extends View> T spyOn(T child) {
+        ViewGroup parent = (ViewGroup) child.getParent();
+        int indexOf = parent.indexOfChild(child);
+        parent.removeView(child);
+        T spy = Mockito.spy(child);
+        parent.addView(spy, indexOf);
+        return spy;
+    }
 }

lib/android/app/src/test/java/com/reactnativenavigation/viewcontrollers/TitleBarTest.java

 package com.reactnativenavigation.viewcontrollers;
 
 import android.app.Activity;
-import androidx.appcompat.widget.ActionMenuView;
 import android.view.View;
 import android.widget.TextView;
 
 import com.reactnativenavigation.BaseTest;
+import com.reactnativenavigation.TestUtils;
 import com.reactnativenavigation.parse.params.Button;
 import com.reactnativenavigation.parse.params.Text;
 import com.reactnativenavigation.react.Constants;
 import java.util.Collections;
 import java.util.List;
 
+import androidx.appcompat.widget.ActionMenuView;
+
+import static com.reactnativenavigation.utils.Assertions.assertNotNull;
 import static com.reactnativenavigation.utils.TitleBarHelper.createButtonController;
+import static com.reactnativenavigation.utils.ViewUtils.findChildByClass;
 import static org.assertj.core.api.Java6Assertions.assertThat;
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.eq;
         verify(uut).removeView(title);
     }
 
+    @Test
+    public void setLayoutDirection_directionIsExplicitlyAppliedToButtonsContainer() {
+        ActionMenuView buttonsContainer = findChildByClass(uut, ActionMenuView.class);
+        assertNotNull(buttonsContainer);
+        ActionMenuView spy = TestUtils.spyOn(buttonsContainer);
+        uut.setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
+        verify(spy).setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
+    }
+
     private List<TitleBarButtonController> leftButton(Button leftButton) {
         return Collections.singletonList(createButtonController(activity, uut, leftButton));
     }