Move registering receivers to corestartable

Created a CoreStartable for BatteryController, and moved the registering
receivers in batteryControllerImpl to the corestartable

Test: Manually checked
Bug: b/307517093
Flag: ACONFIG com.android.systemui.register_battery_controller_receivers_in_corestartable DEVELOPMENT

Change-Id: I704f9f235760c4c93039097749946b76c8a5dc34
diff --git a/packages/SystemUI/aconfig/systemui.aconfig b/packages/SystemUI/aconfig/systemui.aconfig
index c61002e..c2e4b82 100644
--- a/packages/SystemUI/aconfig/systemui.aconfig
+++ b/packages/SystemUI/aconfig/systemui.aconfig
@@ -793,4 +793,14 @@
     metadata {
       purpose: PURPOSE_BUGFIX
     }
-}
\ No newline at end of file
+}
+
+flag {
+    name: "register_battery_controller_receivers_in_corestartable"
+    namespace: "systemui"
+    description: "Decide whether to register the receivers in battery controller impl in the BatteryControllerStartable corestartable."
+    bug: "307517093"
+    metadata {
+        purpose: PURPOSE_BUGFIX
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/dagger/SystemUICoreStartableModule.kt b/packages/SystemUI/src/com/android/systemui/dagger/SystemUICoreStartableModule.kt
index 21ee5bd..23fc8ac 100644
--- a/packages/SystemUI/src/com/android/systemui/dagger/SystemUICoreStartableModule.kt
+++ b/packages/SystemUI/src/com/android/systemui/dagger/SystemUICoreStartableModule.kt
@@ -55,6 +55,7 @@
 import com.android.systemui.statusbar.notification.InstantAppNotifier
 import com.android.systemui.statusbar.phone.ScrimController
 import com.android.systemui.statusbar.phone.StatusBarHeadsUpChangeListener
+import com.android.systemui.statusbar.policy.BatteryControllerStartable
 import com.android.systemui.stylus.StylusUsiPowerStartable
 import com.android.systemui.temporarydisplay.chipbar.ChipbarCoordinator
 import com.android.systemui.theme.ThemeOverlayController
@@ -343,4 +344,10 @@
     @IntoMap
     @ClassKey(HomeControlsDreamStartable::class)
     abstract fun bindHomeControlsDreamStartable(impl: HomeControlsDreamStartable): CoreStartable
+
+    /** Binds {@link BatteryControllerStartable} as a {@link CoreStartable}. */
+    @Binds
+    @IntoMap
+    @ClassKey(BatteryControllerStartable::class)
+    abstract fun bindsBatteryControllerStartable(impl: BatteryControllerStartable): CoreStartable
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BatteryControllerImpl.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BatteryControllerImpl.java
index 45078e3..46ca6e9 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BatteryControllerImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BatteryControllerImpl.java
@@ -22,6 +22,7 @@
 import static android.os.BatteryManager.EXTRA_PRESENT;
 
 import static com.android.settingslib.fuelgauge.BatterySaverLogging.SAVER_ENABLED_QS;
+import static com.android.systemui.Flags.registerBatteryControllerReceiversInCorestartable;
 import static com.android.systemui.util.DumpUtilsKt.asIndenting;
 
 import android.annotation.WorkerThread;
@@ -151,7 +152,9 @@
     @Override
     public void init() {
         mLogger.logBatteryControllerInit(this, mHasReceivedBattery);
-        registerReceiver();
+        if (!registerBatteryControllerReceiversInCorestartable()) {
+            registerReceiver();
+        }
         if (!mHasReceivedBattery) {
             // Get initial state. Relying on Sticky behavior until API for getting info.
             Intent intent = mContext.registerReceiver(
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BatteryControllerStartable.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BatteryControllerStartable.java
new file mode 100644
index 0000000..7f601c8
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BatteryControllerStartable.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2016 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.statusbar.policy;
+
+import static com.android.systemui.Flags.registerBatteryControllerReceiversInCorestartable;
+
+import android.content.BroadcastReceiver;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.hardware.usb.UsbManager;
+import android.os.PowerManager;
+
+import com.android.systemui.CoreStartable;
+import com.android.systemui.broadcast.BroadcastDispatcher;
+import com.android.systemui.dagger.SysUISingleton;
+import com.android.systemui.dagger.qualifiers.Background;
+
+import java.util.concurrent.Executor;
+
+import javax.inject.Inject;
+
+/** A {@link CoreStartable} responsible for registering the receivers for
+ * {@link BatteryControllerImpl}.
+ */
+@SysUISingleton
+public class BatteryControllerStartable implements CoreStartable {
+
+    private final BatteryController mBatteryController;
+    private final Executor mBackgroundExecutor;
+
+    private static final String ACTION_LEVEL_TEST = "com.android.systemui.BATTERY_LEVEL_TEST";
+
+    protected final BroadcastDispatcher mBroadcastDispatcher;
+    @Inject
+    public BatteryControllerStartable(
+            BatteryController batteryController,
+            BroadcastDispatcher broadcastDispatcher,
+            @Background Executor backgroundExecutor) {
+        mBatteryController = batteryController;
+        mBroadcastDispatcher = broadcastDispatcher;
+        mBackgroundExecutor = backgroundExecutor;
+    }
+
+    private void registerReceiver() {
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(Intent.ACTION_BATTERY_CHANGED);
+        filter.addAction(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED);
+        filter.addAction(ACTION_LEVEL_TEST);
+        filter.addAction(UsbManager.ACTION_USB_PORT_COMPLIANCE_CHANGED);
+        mBroadcastDispatcher.registerReceiver((BroadcastReceiver) mBatteryController, filter);
+    }
+
+    @Override
+    public void start() {
+        if (registerBatteryControllerReceiversInCorestartable()
+                && mBatteryController instanceof BatteryControllerImpl) {
+            mBackgroundExecutor.execute(() -> registerReceiver());
+        }
+    }
+}
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/policy/BatteryControllerStartableTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/policy/BatteryControllerStartableTest.java
new file mode 100644
index 0000000..f1dbee2
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/policy/BatteryControllerStartableTest.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2018 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.statusbar.policy;
+
+import static com.android.dx.mockito.inline.extended.ExtendedMockito.mockitoSession;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyZeroInteractions;
+
+import android.os.Handler;
+import android.os.Looper;
+import android.os.PowerManager;
+import android.platform.test.annotations.DisableFlags;
+import android.platform.test.annotations.EnableFlags;
+import android.test.suitebuilder.annotation.SmallTest;
+import android.testing.AndroidTestingRunner;
+import android.testing.TestableLooper;
+
+import com.android.settingslib.fuelgauge.BatterySaverUtils;
+import com.android.systemui.Flags;
+import com.android.systemui.SysuiTestCase;
+import com.android.systemui.broadcast.BroadcastDispatcher;
+import com.android.systemui.demomode.DemoModeController;
+import com.android.systemui.dump.DumpManager;
+import com.android.systemui.power.EnhancedEstimates;
+import com.android.systemui.util.concurrency.FakeExecutor;
+import com.android.systemui.util.time.FakeSystemClock;
+
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.mockito.MockitoSession;
+
+@SmallTest
+@RunWith(AndroidTestingRunner.class)
+@TestableLooper.RunWithLooper
+public class BatteryControllerStartableTest extends SysuiTestCase {
+
+    private BatteryController mBatteryController;
+    private BatteryControllerStartable mBatteryControllerStartable;
+    private MockitoSession mMockitoSession;
+    private FakeExecutor mExecutor;
+    @Mock
+    private BroadcastDispatcher mBroadcastDispatcher;
+
+    @Before
+    public void setUp() throws IllegalStateException {
+        MockitoAnnotations.initMocks(this);
+        mMockitoSession = mockitoSession()
+                .initMocks(this)
+                .mockStatic(BatterySaverUtils.class)
+                .startMocking();
+
+        mExecutor = new FakeExecutor(new FakeSystemClock());
+
+        mBatteryController = new BatteryControllerImpl(getContext(),
+                mock(EnhancedEstimates.class),
+                mock(PowerManager.class),
+                mock(BroadcastDispatcher.class),
+                mock(DemoModeController.class),
+                mock(DumpManager.class),
+                mock(BatteryControllerLogger.class),
+                new Handler(Looper.getMainLooper()),
+                new Handler(Looper.getMainLooper()));
+        mBatteryController.init();
+
+        mBatteryControllerStartable = new BatteryControllerStartable(mBatteryController,
+                mBroadcastDispatcher, mExecutor);
+    }
+
+    @After
+    public void tearDown() {
+        mMockitoSession.finishMocking();
+    }
+
+    @Test
+    @EnableFlags(Flags.FLAG_REGISTER_BATTERY_CONTROLLER_RECEIVERS_IN_CORESTARTABLE)
+    public void start_flagEnabled_registersListeners() {
+        mBatteryControllerStartable.start();
+        mExecutor.runAllReady();
+
+        verify(mBroadcastDispatcher).registerReceiver(any(), any());
+    }
+
+    @Test
+    @DisableFlags(Flags.FLAG_REGISTER_BATTERY_CONTROLLER_RECEIVERS_IN_CORESTARTABLE)
+    public void start_flagDisabled_doesNotRegistersListeners() {
+        mBatteryControllerStartable.start();
+        mExecutor.runAllReady();
+
+        verifyZeroInteractions(mBroadcastDispatcher);
+    }
+}