Update light mode when battery saver changes

Change-Id: I56b309222782d823d80a66c87d30eefed2ce5dc7
Fixes: 30150232

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

@@ -27,7 +27,7 @@ import static com.android.systemui.statusbar.phone.BarTransitions.MODE_TRANSPARE
 /**
  * Controls how light status bar flag applies to the icons.
  */
-public class LightStatusBarController {
+public class LightStatusBarController implements BatteryController.BatteryStateChangeCallback {
 
     private final StatusBarIconController mIconController;
     private final BatteryController mBatteryController;
@@ -37,6 +37,7 @@ public class LightStatusBarController {
     private int mDockedStackVisibility;
     private boolean mFullscreenLight;
     private boolean mDockedLight;
+    private int mLastStatusBarMode;
 
     private final Rect mLastFullscreenBounds = new Rect();
     private final Rect mLastDockedBounds = new Rect();
@@ -45,6 +46,7 @@ public class LightStatusBarController {
             BatteryController batteryController) {
         mIconController = iconController;
         mBatteryController = batteryController;
+        batteryController.addStateChangedCallback(this);
     }
 
     public void setFingerprintUnlockController(
@@ -73,6 +75,7 @@ public class LightStatusBarController {
         }
         mFullscreenStackVisibility = newFullscreen;
         mDockedStackVisibility = newDocked;
+        mLastStatusBarMode = statusBarMode;
         mLastFullscreenBounds.set(fullscreenStackBounds);
         mLastDockedBounds.set(dockedStackBounds);
     }
@@ -123,4 +126,16 @@ public class LightStatusBarController {
             mIconController.setIconsDark(true, animateChange());
         }
     }
+
+    @Override
+    public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) {
+
+    }
+
+    @Override
+    public void onPowerSaveChanged(boolean isPowerSave) {
+        onSystemUiVisibilityChanged(mFullscreenStackVisibility, mDockedStackVisibility,
+                0 /* mask */, mLastFullscreenBounds, mLastDockedBounds, true /* sbModeChange*/,
+                mLastStatusBarMode);
+    }
 }