Visual update for the unseen notification indicator.

bug: 131262206
Test: Manual Test.

Change-Id: I686598206c29670f8b31280349f1d5adbfb73dba
(cherry picked from commit 50cfe28e03a6221d047adc7ea5e983c0fa2f3c3e)

packages/CarSystemUI/res/drawable/car_ic_notification_selected_unseen.xml

@@ -30,4 +30,5 @@
         android:strokeWidth="1"
         android:pathData="M 6 0 C 9.31370849898 0 12 2.68629150102 12 6 C 12 9.31370849898 9.31370849898 12 6 12 C 2.68629150102 12 0 9.31370849898 0 6 C 0 2.68629150102 2.68629150102 0 6 0 Z" />
   </group>
-</vector>
+</vector>
+

packages/CarSystemUI/res/drawable/car_ic_notification_unseen.xml

@@ -30,4 +30,4 @@
         android:strokeWidth="1"
         android:pathData="M 6 0 C 9.31370849898 0 12 2.68629150102 12 6 C 12 9.31370849898 9.31370849898 12 6 12 C 2.68629150102 12 0 9.31370849898 0 6 C 0 2.68629150102 2.68629150102 0 6 0 Z" />
   </group>
-</vector>
+</vector>

packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarNavigationBarView.java

@@ -35,7 +35,7 @@ import com.android.systemui.statusbar.phone.StatusBarIconController;
  */
 class CarNavigationBarView extends LinearLayout {
     private View mNavButtons;
-    private View mNotificationsButton;
+    private CarNavigationButton mNotificationsButton;
     private CarStatusBar mCarStatusBar;
     private Context mContext;
     private View mLockScreenButtons;
@@ -151,10 +151,20 @@ class CarNavigationBarView extends LinearLayout {
      * Nav buttons will be shown.
      */
     public void hideKeyguardButtons() {
-        if (mLockScreenButtons == null) {
-            return;
-        }
+        if (mLockScreenButtons == null) return;
+
         mNavButtons.setVisibility(View.VISIBLE);
         mLockScreenButtons.setVisibility(View.GONE);
     }
+
+    /**
+     * Toggles the notification unseen indicator on/off.
+     *
+     * @param hasUnseen true if the unseen notification count is great than 0.
+     */
+    void toggleNotificationUnseenIndicator(Boolean hasUnseen) {
+        if (mNotificationsButton == null) return;
+
+        mNotificationsButton.setUnseen(hasUnseen);
+    }
 }

packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarNavigationButton.java

@@ -34,12 +34,17 @@ import java.net.URISyntaxException;
  * code.
  */
 public class CarNavigationButton extends com.android.keyguard.AlphaOptimizedImageButton {
-
     private static final String TAG = "CarNavigationButton";
+
+    private static final int UNSEEN_ICON_RESOURCE_ID = R.drawable.car_ic_notification_unseen;
+    private static final int UNSEEN_SELECTED_ICON_RESOURCE_ID =
+            R.drawable.car_ic_notification_selected_unseen;
+
     private Context mContext;
     private String mIntent;
     private String mLongIntent;
     private boolean mBroadcastIntent;
+    private boolean mHasUnseen = false;
     private boolean mSelected = false;
     private float mSelectedAlpha = 1f;
     private float mUnselectedAlpha = 1f;
@@ -50,6 +55,8 @@ public class CarNavigationButton extends com.android.keyguard.AlphaOptimizedImag
     public CarNavigationButton(Context context, AttributeSet attrs) {
         super(context, attrs);
         mContext = context;
+
+        // CarNavigationButton attrs
         TypedArray typedArray = context.obtainStyledAttributes(
                 attrs, R.styleable.CarNavigationButton);
         mIntent = typedArray.getString(R.styleable.CarNavigationButton_intent);
@@ -59,10 +66,15 @@ public class CarNavigationButton extends com.android.keyguard.AlphaOptimizedImag
                 R.styleable.CarNavigationButton_selectedAlpha, mSelectedAlpha);
         mUnselectedAlpha = typedArray.getFloat(
                 R.styleable.CarNavigationButton_unselectedAlpha, mUnselectedAlpha);
-        mIconResourceId = typedArray.getResourceId(
-                com.android.internal.R.styleable.ImageView_src, 0);
         mSelectedIconResourceId = typedArray.getResourceId(
                 R.styleable.CarNavigationButton_selectedIcon, mIconResourceId);
+        typedArray.recycle();
+
+        // ImageView attrs
+        TypedArray a = context.obtainStyledAttributes(
+                attrs, com.android.internal.R.styleable.ImageView);
+        mIconResourceId = a.getResourceId(com.android.internal.R.styleable.ImageView_src, 0);
+        a.recycle();
     }
 
 
@@ -119,6 +131,23 @@ public class CarNavigationButton extends com.android.keyguard.AlphaOptimizedImag
         super.setSelected(selected);
         mSelected = selected;
         setAlpha(mSelected ? mSelectedAlpha : mUnselectedAlpha);
-        setImageResource(mSelected ? mSelectedIconResourceId : mIconResourceId);
+        updateImage();
+    }
+
+    /**
+     * @param hasUnseen true if should indicate if this is a Unseen state, false otherwise.
+     */
+    public void setUnseen(boolean hasUnseen) {
+        mHasUnseen = hasUnseen;
+        updateImage();
+    }
+
+    private void updateImage() {
+        if (mHasUnseen) {
+            setImageResource(mSelected ? UNSEEN_SELECTED_ICON_RESOURCE_ID
+                    : UNSEEN_ICON_RESOURCE_ID);
+        } else {
+            setImageResource(mSelected ? mSelectedIconResourceId : mIconResourceId);
+        }
     }
 }

packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java

@@ -311,7 +311,6 @@ public class CarStatusBar extends StatusBar implements
         return result;
     }
 
-
     @Override
     public void showKeyguard() {
         super.showKeyguard();
@@ -451,9 +450,21 @@ public class CarStatusBar extends StatusBar implements
         mNotificationDataManager = new NotificationDataManager();
         mNotificationDataManager.setOnUnseenCountUpdateListener(
                 () -> {
-                    // TODO: Update Notification Icon based on unseen count
-                    Log.d(TAG, "unseen count: " +
-                            mNotificationDataManager.getUnseenNotificationCount());
+                    if (mNavigationBarView != null && mNotificationDataManager != null) {
+                        Boolean hasUnseen =
+                                mNotificationDataManager.getUnseenNotificationCount() > 0;
+                        if (mNavigationBarView != null) {
+                            mNavigationBarView.toggleNotificationUnseenIndicator(hasUnseen);
+                        }
+
+                        if (mLeftNavigationBarView != null) {
+                            mLeftNavigationBarView.toggleNotificationUnseenIndicator(hasUnseen);
+                        }
+
+                        if (mRightNavigationBarView != null) {
+                            mRightNavigationBarView.toggleNotificationUnseenIndicator(hasUnseen);
+                        }
+                    }
                 });
 
         CarHeadsUpNotificationManager carHeadsUpNotificationManager =