Don't update nav bar tint when in gesture nav

- The region sampling listener is already constantly updating the tint
  based on the actual content beneath the bar

Change-Id: Ia521bd3c5c8507fd97e22dd12e8102dfc2368320
Bug: 154002408
Test: Open up the settings "opening links" activity and ensure it
      the tint doesn't get clobbered

packages/SystemUI/src/com/android/systemui/statusbar/NavigationBarController.java

@@ -44,6 +44,7 @@ import com.android.systemui.statusbar.phone.BarTransitions.TransitionMode;
 import com.android.systemui.statusbar.phone.LightBarController;
 import com.android.systemui.statusbar.phone.NavigationBarFragment;
 import com.android.systemui.statusbar.phone.NavigationBarView;
+import com.android.systemui.statusbar.phone.NavigationModeController;
 import com.android.systemui.statusbar.policy.BatteryController;
 
 import javax.inject.Inject;
@@ -139,7 +140,8 @@ public class NavigationBarController implements Callbacks {
                     ? Dependency.get(LightBarController.class)
                     : new LightBarController(context,
                             Dependency.get(DarkIconDispatcher.class),
-                            Dependency.get(BatteryController.class));
+                            Dependency.get(BatteryController.class),
+                            Dependency.get(NavigationModeController.class));
             navBar.setLightBarController(lightBarController);
 
             // TODO(b/118592525): to support multi-display, we start to add something which is

packages/SystemUI/src/com/android/systemui/statusbar/phone/LightBarController.java

@@ -33,6 +33,7 @@ import com.android.internal.view.AppearanceRegion;
 import com.android.systemui.Dumpable;
 import com.android.systemui.R;
 import com.android.systemui.plugins.DarkIconDispatcher;
+import com.android.systemui.shared.system.QuickStepContract;
 import com.android.systemui.statusbar.policy.BatteryController;
 
 import java.io.FileDescriptor;
@@ -58,6 +59,7 @@ public class LightBarController implements BatteryController.BatteryStateChangeC
     private AppearanceRegion[] mAppearanceRegions = new AppearanceRegion[0];
     private int mStatusBarMode;
     private int mNavigationBarMode;
+    private int mNavigationMode;
     private final Color mDarkModeColor;
 
     /**
@@ -84,11 +86,14 @@ public class LightBarController implements BatteryController.BatteryStateChangeC
 
     @Inject
     public LightBarController(Context ctx, DarkIconDispatcher darkIconDispatcher,
-            BatteryController batteryController) {
+            BatteryController batteryController, NavigationModeController navModeController) {
         mDarkModeColor = Color.valueOf(ctx.getColor(R.color.dark_mode_icon_color_single_tone));
         mStatusBarIconController = (SysuiDarkIconDispatcher) darkIconDispatcher;
         mBatteryController = batteryController;
         mBatteryController.addCallback(this);
+        mNavigationMode = navModeController.addListener((mode) -> {
+            mNavigationMode = mode;
+        });
     }
 
     public void setNavigationBar(LightBarTransitionsController navigationBar) {
@@ -234,7 +239,8 @@ public class LightBarController implements BatteryController.BatteryStateChangeC
     }
 
     private void updateNavigation() {
-        if (mNavigationBarController != null) {
+        if (mNavigationBarController != null
+                && !QuickStepContract.isGesturalMode(mNavigationMode)) {
             mNavigationBarController.setIconsDark(mNavigationLight, animateChange());
         }
     }

packages/SystemUI/src/com/android/systemui/statusbar/phone/RegionSamplingHelper.java

@@ -148,11 +148,6 @@ public class RegionSamplingHelper implements View.OnAttachStateChangeListener,
         updateSamplingRect();
     }
 
-    private void postUpdateSamplingListener() {
-        mHandler.removeCallbacks(mUpdateSamplingListener);
-        mHandler.post(mUpdateSamplingListener);
-    }
-
     private void updateSamplingListener() {
         boolean isSamplingEnabled = mSamplingEnabled
                 && !mSamplingRequestBounds.isEmpty()

packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/LightBarControllerTest.java

@@ -56,7 +56,7 @@ public class LightBarControllerTest extends SysuiTestCase {
         when(mStatusBarIconController.getTransitionsController()).thenReturn(
                 mLightBarTransitionsController);
         mLightBarController = new LightBarController(mContext, mStatusBarIconController,
-                mock(BatteryController.class));
+                mock(BatteryController.class), mock(NavigationModeController.class));
     }
 
     @Test