DO NOT MERGE Create a single provider of car service

This should be shared across all things requiring it in system UI.

Test: manual
Bug: 142808072
Change-Id: I334d74c3bbe8270822feae268513bf93a4160a5b

packages/CarSystemUI/src/com/android/systemui/CarSystemUIFactory.java

@@ -20,6 +20,7 @@ import android.content.Context;
 
 import com.android.internal.widget.LockPatternUtils;
 import com.android.keyguard.ViewMediatorCallback;
+import com.android.systemui.car.CarServiceProvider;
 import com.android.systemui.statusbar.car.CarFacetButtonController;
 import com.android.systemui.statusbar.car.CarStatusBarKeyguardViewManager;
 import com.android.systemui.statusbar.phone.StatusBarKeyguardViewManager;
@@ -36,6 +37,7 @@ import dagger.Component;
 public class CarSystemUIFactory extends SystemUIFactory {
 
     private CarDependencyComponent mCarDependencyComponent;
+    private CarServiceProvider mCarServiceProvider;
 
     @Override
     protected SystemUIRootComponent buildSystemUIRootComponent(Context context) {
@@ -48,6 +50,14 @@ public class CarSystemUIFactory extends SystemUIFactory {
                 .build();
     }
 
+    /** Gets a {@link CarServiceProvider}. */
+    public CarServiceProvider getCarServiceProvider(Context context) {
+        if (mCarServiceProvider == null) {
+            mCarServiceProvider = new CarServiceProvider(context);
+        }
+        return mCarServiceProvider;
+    }
+
     public CarDependencyComponent getCarDependencyComponent() {
         return mCarDependencyComponent;
     }

packages/CarSystemUI/src/com/android/systemui/car/CarServiceProvider.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.systemui.car;
+
+import android.car.Car;
+import android.car.Car.CarServiceLifecycleListener;
+import android.content.Context;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Connects to the car service a single time for shared use across all of system ui.
+ */
+public class CarServiceProvider {
+
+    private final Context mContext;
+    private final List<CarServiceLifecycleListener> mListeners = new ArrayList<>();
+    private Car mCar;
+
+    public CarServiceProvider(Context context) {
+        mContext = context;
+        mCar = Car.createCar(mContext, /* handler= */ null, Car.CAR_WAIT_TIMEOUT_DO_NOT_WAIT,
+                (car, ready) -> {
+                    mCar = car;
+
+                    synchronized (mListeners) {
+                        for (CarServiceLifecycleListener listener : mListeners) {
+                            listener.onLifecycleChanged(mCar, ready);
+                        }
+                    }
+                });
+    }
+
+    /**
+     * Let's other components hook into the connection to the car service. If we're already
+     * connected
+     * to the car service, the callback is immediately triggered.
+     */
+    public void addListener(CarServiceLifecycleListener listener) {
+        if (mCar.isConnected()) {
+            listener.onLifecycleChanged(mCar, /* ready= */ true);
+        }
+        mListeners.add(listener);
+    }
+}

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

@@ -199,6 +199,10 @@ public class CarStatusBar extends StatusBar implements CarBatteryController.Batt
 
     @Override
     public void start() {
+        // Non blocking call to connect to car service. Call this early so that we'll be connected
+        // asap.
+        ((CarSystemUIFactory) SystemUIFactory.getInstance()).getCarServiceProvider(mContext);
+
         // get the provisioned state before calling the parent class since it's that flow that
         // builds the nav bar
         mDeviceProvisionedController = Dependency.get(DeviceProvisionedController.class);
@@ -482,11 +486,8 @@ public class CarStatusBar extends StatusBar implements CarBatteryController.Batt
 
         CarNotificationListener carNotificationListener = new CarNotificationListener();
         mCarUxRestrictionManagerWrapper = new CarUxRestrictionManagerWrapper();
-        // This can take time if car service is not ready up to this time.
+        ((CarSystemUIFactory) SystemUIFactory.getInstance()).getCarServiceProvider(mContext)
-        // TODO(b/142808072) Refactor CarUxRestrictionManagerWrapper to allow setting
+                .addListener((car, ready) -> {
-        // CarUxRestrictionsManager later and switch to Car.CAR_WAIT_TIMEOUT_DO_NOT_WAIT.
-        Car.createCar(mContext, /* handler= */ null, Car.CAR_WAIT_TIMEOUT_WAIT_FOREVER,
-                (car, ready) -> {
                     if (!ready) {
                         return;
                     }

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

@@ -26,6 +26,9 @@ import android.util.Log;
 
 import androidx.annotation.NonNull;
 
+import com.android.systemui.CarSystemUIFactory;
+import com.android.systemui.SystemUIFactory;
+
 /**
  * Helper class for connecting to the {@link CarDrivingStateManager} and listening for driving state
  * changes.
@@ -35,7 +38,6 @@ public class DrivingStateHelper {
 
     private final Context mContext;
     private CarDrivingStateManager mDrivingStateManager;
-    private Car mCar;
     private CarDrivingStateEventListener mDrivingStateHandler;
 
     public DrivingStateHelper(Context context,
@@ -64,8 +66,8 @@ public class DrivingStateHelper {
      * Establishes connection with the Car service.
      */
     public void connectToCarService() {
-        mCar = Car.createCar(mContext, /* handler= */ null, Car.CAR_WAIT_TIMEOUT_DO_NOT_WAIT,
+        ((CarSystemUIFactory) SystemUIFactory.getInstance()).getCarServiceProvider(mContext)
-                mCarServiceLifecycleListener);
+                .addListener(mCarServiceLifecycleListener);
     }
 
     private final CarServiceLifecycleListener mCarServiceLifecycleListener = (car, ready) -> {

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

@@ -34,7 +34,9 @@ import android.view.ViewStub;
 
 import androidx.recyclerview.widget.GridLayoutManager;
 
+import com.android.systemui.CarSystemUIFactory;
 import com.android.systemui.R;
+import com.android.systemui.SystemUIFactory;
 import com.android.systemui.statusbar.car.CarTrustAgentUnlockDialogHelper.OnHideListener;
 import com.android.systemui.statusbar.car.UserGridRecyclerView.UserRecord;
 
@@ -65,7 +67,6 @@ public class FullscreenUserSwitcher {
             mContext.unregisterReceiver(mUserUnlockReceiver);
         }
     };
-    private final Car mCar;
 
     public FullscreenUserSwitcher(CarStatusBar statusBar, ViewStub containerStub, Context context) {
         mStatusBar = statusBar;
@@ -85,8 +86,8 @@ public class FullscreenUserSwitcher {
         mUnlockDialogHelper = new CarTrustAgentUnlockDialogHelper(mContext);
         mUserManager = mContext.getSystemService(UserManager.class);
 
-        mCar = Car.createCar(mContext, /* handler= */ null, Car.CAR_WAIT_TIMEOUT_DO_NOT_WAIT,
+        ((CarSystemUIFactory) SystemUIFactory.getInstance()).getCarServiceProvider(mContext)
-                (car, ready) -> {
+                .addListener((car, ready) -> {
                     if (!ready) {
                         return;
                     }

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

@@ -24,6 +24,9 @@ import android.car.hardware.power.CarPowerManager.CarPowerStateListener;
 import android.content.Context;
 import android.util.Log;
 
+import com.android.systemui.CarSystemUIFactory;
+import com.android.systemui.SystemUIFactory;
+
 /**
  * Helper class for connecting to the {@link CarPowerManager} and listening for power state changes.
  */
@@ -33,7 +36,6 @@ public class PowerManagerHelper {
     private final Context mContext;
     private final CarPowerStateListener mCarPowerStateListener;
 
-    private Car mCar;
     private CarPowerManager mCarPowerManager;
 
     private final CarServiceLifecycleListener mCarServiceLifecycleListener;
@@ -59,7 +61,7 @@ public class PowerManagerHelper {
      * Connect to Car service.
      */
     void connectToCarService() {
-        mCar = Car.createCar(mContext, /* handler= */ null, Car.CAR_WAIT_TIMEOUT_DO_NOT_WAIT,
+        ((CarSystemUIFactory) SystemUIFactory.getInstance()).getCarServiceProvider(mContext)
-                mCarServiceLifecycleListener);
+                .addListener(mCarServiceLifecycleListener);
     }
 }

packages/CarSystemUI/src/com/android/systemui/statusbar/car/hvac/HvacController.java

@@ -26,9 +26,11 @@ import android.car.hardware.CarPropertyValue;
 import android.car.hardware.hvac.CarHvacManager;
 import android.car.hardware.hvac.CarHvacManager.CarHvacEventCallback;
 import android.content.Context;
-import android.os.Handler;
 import android.util.Log;
 
+import com.android.systemui.CarSystemUIFactory;
+import com.android.systemui.SystemUIFactory;
+
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
@@ -41,13 +43,9 @@ import java.util.Objects;
  * {@link TemperatureView}s
  */
 public class HvacController {
-
     public static final String TAG = "HvacController";
-    public static final int BIND_TO_HVAC_RETRY_DELAY = 5000;
 
     private Context mContext;
-    private Handler mHandler;
-    private Car mCar;
     private CarHvacManager mHvacManager;
     private HashMap<HvacKey, List<TemperatureView>> mTempComponents = new HashMap<>();
 
@@ -105,9 +103,8 @@ public class HvacController {
      * ({@link CarHvacManager}) will happen on the same thread this method was called from.
      */
     public void connectToCarService() {
-        mHandler = new Handler();
+        ((CarSystemUIFactory) SystemUIFactory.getInstance()).getCarServiceProvider(mContext)
-        mCar = Car.createCar(mContext, /* handler= */ mHandler, Car.CAR_WAIT_TIMEOUT_DO_NOT_WAIT,
+            .addListener(mCarServiceLifecycleListener);
-                mCarServiceLifecycleListener);
     }
 
     /**

packages/CarSystemUI/src/com/android/systemui/volume/CarVolumeDialogImpl.java

@@ -55,7 +55,9 @@ import android.widget.SeekBar.OnSeekBarChangeListener;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.android.systemui.CarSystemUIFactory;
 import com.android.systemui.R;
+import com.android.systemui.SystemUIFactory;
 import com.android.systemui.plugins.VolumeDialog;
 
 import org.xmlpull.v1.XmlPullParserException;
@@ -95,7 +97,6 @@ public class CarVolumeDialogImpl implements VolumeDialog {
     private CustomDialog mDialog;
     private RecyclerView mListView;
     private CarVolumeItemAdapter mVolumeItemsAdapter;
-    private Car mCar;
     private CarAudioManager mCarAudioManager;
     private boolean mHovering;
     private int mCurrentlyDisplayingGroupId;
@@ -196,8 +197,8 @@ public class CarVolumeDialogImpl implements VolumeDialog {
     @Override
     public void init(int windowType, Callback callback) {
         initDialog();
-        mCar = Car.createCar(mContext, /* handler= */ null, Car.CAR_WAIT_TIMEOUT_DO_NOT_WAIT,
+        ((CarSystemUIFactory) SystemUIFactory.getInstance()).getCarServiceProvider(mContext)
-                mCarServiceLifecycleListener);
+                .addListener(mCarServiceLifecycleListener);
     }
 
     @Override
@@ -205,12 +206,6 @@ public class CarVolumeDialogImpl implements VolumeDialog {
         mHandler.removeCallbacksAndMessages(/* token= */ null);
 
         cleanupAudioManager();
-        // unregisterVolumeCallback is not being called when disconnect car, so we manually cleanup
-        // audio manager beforehand.
-        if (mCar != null) {
-            mCar.disconnect();
-            mCar = null;
-        }
     }
 
     private void initDialog() {