[DO NOT MERGE] Fix BroadcastDispatcher registering with CURRENT am: e771b7529e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11792343

Change-Id: Ia1d89c5e65915027359b1e6d4b2abdc8c26bf24d

packages/SystemUI/docs/broadcasts.md

@@ -62,7 +62,7 @@ Acquire the dispatcher by using `@Inject` to obtain a `BroadcastDispatcher`. The
  * @param executor An executor to dispatch [BroadcastReceiver.onReceive]. Pass null to use an
  *                 executor in the main thread (default).
  * @param user A user handle to determine which broadcast should be dispatched to this receiver.
- *             By default, it is the current user.
+ *             By default, it is the user of the context (system user in SystemUI).
  * @throws IllegalArgumentException if the filter has other constraints that are not actions or
  *                                  categories or the filter has no actions.
  */

packages/SystemUI/src/com/android/systemui/broadcast/BroadcastDispatcher.kt

@@ -16,8 +16,10 @@
 
 package com.android.systemui.broadcast
 
+import android.app.ActivityManager
 import android.content.BroadcastReceiver
 import android.content.Context
+import android.content.Intent
 import android.content.IntentFilter
 import android.os.Handler
 import android.os.HandlerExecutor
@@ -29,14 +31,10 @@ import android.util.SparseArray
 import com.android.internal.annotations.VisibleForTesting
 import com.android.systemui.Dumpable
 import com.android.systemui.broadcast.logging.BroadcastDispatcherLogger
-import com.android.systemui.dagger.qualifiers.Background
-import com.android.systemui.dagger.qualifiers.Main
 import com.android.systemui.dump.DumpManager
 import java.io.FileDescriptor
 import java.io.PrintWriter
 import java.util.concurrent.Executor
-import javax.inject.Inject
-import javax.inject.Singleton
 
 data class ReceiverData(
     val receiver: BroadcastReceiver,
@@ -48,6 +46,8 @@ data class ReceiverData(
 private const val MSG_ADD_RECEIVER = 0
 private const val MSG_REMOVE_RECEIVER = 1
 private const val MSG_REMOVE_RECEIVER_FOR_USER = 2
+private const val MSG_USER_SWITCH = 3
+private const val MSG_SET_STARTING_USER = 99
 private const val TAG = "BroadcastDispatcher"
 private const val DEBUG = true
 
@@ -62,21 +62,27 @@ private const val DEBUG = true
  * permissions, schemes, data types, data authorities or priority different than 0.
  * Cannot be used for getting sticky broadcasts (either as return of registering or as re-delivery).
  */
-@Singleton
-open class BroadcastDispatcher @Inject constructor (
+open class BroadcastDispatcher constructor (
     private val context: Context,
-    @Main private val mainHandler: Handler,
-    @Background private val bgLooper: Looper,
-    dumpManager: DumpManager,
+    private val bgLooper: Looper,
+    private val dumpManager: DumpManager,
     private val logger: BroadcastDispatcherLogger
-) : Dumpable {
+) : Dumpable, BroadcastReceiver() {
 
     // Only modify in BG thread
     private val receiversByUser = SparseArray<UserBroadcastDispatcher>(20)
 
-    init {
-        // TODO: Don't do this in the constructor
+    fun initialize() {
         dumpManager.registerDumpable(javaClass.name, this)
+        handler.sendEmptyMessage(MSG_SET_STARTING_USER)
+        registerReceiver(this, IntentFilter(Intent.ACTION_USER_SWITCHED), null, UserHandle.ALL)
+    }
+
+    override fun onReceive(context: Context, intent: Intent) {
+        if (intent.action == Intent.ACTION_USER_SWITCHED) {
+            val user = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL)
+            handler.obtainMessage(MSG_USER_SWITCH, user, 0).sendToTarget()
+        }
     }
 
     /**
@@ -88,7 +94,7 @@ open class BroadcastDispatcher @Inject constructor (
      *               have at least one action.
      * @param handler A handler to dispatch [BroadcastReceiver.onReceive].
      * @param user A user handle to determine which broadcast should be dispatched to this receiver.
-     *             By default, it is the current user.
+     *             By default, it is the user of the context (system user in SystemUI).
      * @throws IllegalArgumentException if the filter has other constraints that are not actions or
      *                                  categories or the filter has no actions.
      */
@@ -114,7 +120,7 @@ open class BroadcastDispatcher @Inject constructor (
      * @param executor An executor to dispatch [BroadcastReceiver.onReceive]. Pass null to use an
      *                 executor in the main thread (default).
      * @param user A user handle to determine which broadcast should be dispatched to this receiver.
-     *             By default, it is the current user.
+     *             By default, it is the user of the context (system user in SystemUI).
      * @throws IllegalArgumentException if the filter has other constraints that are not actions or
      *                                  categories or the filter has no actions.
      */
@@ -171,6 +177,7 @@ open class BroadcastDispatcher @Inject constructor (
 
     override fun dump(fd: FileDescriptor, pw: PrintWriter, args: Array<out String>) {
         pw.println("Broadcast dispatcher:")
+        pw.println("  Current user: ${handler.currentUser}")
         for (index in 0 until receiversByUser.size()) {
             pw.println("  User ${receiversByUser.keyAt(index)}")
             receiversByUser.valueAt(index).dump(fd, pw, args)
@@ -178,6 +185,8 @@ open class BroadcastDispatcher @Inject constructor (
     }
 
     private val handler = object : Handler(bgLooper) {
+        var currentUser = UserHandle.USER_SYSTEM
+
         override fun handleMessage(msg: Message) {
             when (msg.what) {
                 MSG_ADD_RECEIVER -> {
@@ -185,7 +194,7 @@ open class BroadcastDispatcher @Inject constructor (
                     // If the receiver asked to be registered under the current user, we register
                     // under the actual current user.
                     val userId = if (data.user.identifier == UserHandle.USER_CURRENT) {
-                        context.userId
+                        currentUser
                     } else {
                         data.user.identifier
                     }
@@ -208,6 +217,13 @@ open class BroadcastDispatcher @Inject constructor (
                     receiversByUser.get(msg.arg1)?.unregisterReceiver(msg.obj as BroadcastReceiver)
                 }
 
+                MSG_USER_SWITCH -> {
+                    currentUser = msg.arg1
+                }
+                MSG_SET_STARTING_USER -> {
+                    currentUser = ActivityManager.getCurrentUser()
+                }
+
                 else -> super.handleMessage(msg)
             }
         }

packages/SystemUI/src/com/android/systemui/dagger/DependencyProvider.java

@@ -25,6 +25,7 @@ import android.hardware.display.AmbientDisplayConfiguration;
 import android.hardware.display.NightDisplayListener;
 import android.os.Handler;
 import android.os.HandlerThread;
+import android.os.Looper;
 import android.os.ServiceManager;
 import android.util.DisplayMetrics;
 import android.view.Choreographer;
@@ -39,9 +40,12 @@ import com.android.internal.util.NotificationMessagingUtil;
 import com.android.internal.widget.LockPatternUtils;
 import com.android.keyguard.ViewMediatorCallback;
 import com.android.systemui.Prefs;
+import com.android.systemui.broadcast.BroadcastDispatcher;
+import com.android.systemui.broadcast.logging.BroadcastDispatcherLogger;
 import com.android.systemui.dagger.qualifiers.Background;
 import com.android.systemui.dagger.qualifiers.Main;
 import com.android.systemui.doze.AlwaysOnDisplayPolicy;
+import com.android.systemui.dump.DumpManager;
 import com.android.systemui.keyguard.KeyguardViewMediator;
 import com.android.systemui.plugins.PluginInitializerImpl;
 import com.android.systemui.shared.plugins.PluginManager;
@@ -178,6 +182,21 @@ public class DependencyProvider {
         return ActivityManagerWrapper.getInstance();
     }
 
+    /** Provides and initializes the {#link BroadcastDispatcher} for SystemUI */
+    @Singleton
+    @Provides
+    public BroadcastDispatcher providesBroadcastDispatcher(
+            Context context,
+            @Background Looper backgroundLooper,
+            DumpManager dumpManager,
+            BroadcastDispatcherLogger logger
+    ) {
+        BroadcastDispatcher bD =
+                new BroadcastDispatcher(context, backgroundLooper, dumpManager, logger);
+        bD.initialize();
+        return bD;
+    }
+
     @Singleton
     @Provides
     public DevicePolicyManagerWrapper provideDevicePolicyManagerWrapper() {

packages/SystemUI/tests/src/com/android/systemui/SysuiTestCase.java

@@ -73,8 +73,8 @@ public abstract class SysuiTestCase {
     public void SysuiSetup() throws Exception {
         SystemUIFactory.createFromConfig(mContext);
         mDependency = new TestableDependency(mContext);
-        mFakeBroadcastDispatcher = new FakeBroadcastDispatcher(mContext, mock(Handler.class),
-                mock(Looper.class), mock(DumpManager.class), mock(BroadcastDispatcherLogger.class));
+        mFakeBroadcastDispatcher = new FakeBroadcastDispatcher(mContext, mock(Looper.class),
+                mock(DumpManager.class), mock(BroadcastDispatcherLogger.class));
 
         mRealInstrumentation = InstrumentationRegistry.getInstrumentation();
         Instrumentation inst = spy(mRealInstrumentation);

packages/SystemUI/tests/src/com/android/systemui/broadcast/BroadcastDispatcherTest.kt

@@ -18,6 +18,7 @@ package com.android.systemui.broadcast
 
 import android.content.BroadcastReceiver
 import android.content.Context
+import android.content.Intent
 import android.content.IntentFilter
 import android.os.Handler
 import android.os.Looper
@@ -96,7 +97,6 @@ class BroadcastDispatcherTest : SysuiTestCase() {
 
         broadcastDispatcher = TestBroadcastDispatcher(
                 mockContext,
-                Handler(testableLooper.looper),
                 testableLooper.looper,
                 mock(DumpManager::class.java),
                 logger,
@@ -177,7 +177,12 @@ class BroadcastDispatcherTest : SysuiTestCase() {
 
     @Test
     fun testRegisterCurrentAsActualUser() {
-        setUserMock(mockContext, user1)
+        val intent = Intent(Intent.ACTION_USER_SWITCHED).apply {
+            putExtra(Intent.EXTRA_USER_HANDLE, user1.identifier)
+        }
+        broadcastDispatcher.onReceive(mockContext, intent)
+        testableLooper.processAllMessages()
+
         broadcastDispatcher.registerReceiverWithHandler(broadcastReceiver, intentFilter,
                 mockHandler, UserHandle.CURRENT)
 
@@ -240,12 +245,11 @@ class BroadcastDispatcherTest : SysuiTestCase() {
 
     private class TestBroadcastDispatcher(
         context: Context,
-        mainHandler: Handler,
         bgLooper: Looper,
         dumpManager: DumpManager,
         logger: BroadcastDispatcherLogger,
         var mockUBRMap: Map<Int, UserBroadcastDispatcher>
-    ) : BroadcastDispatcher(context, mainHandler, bgLooper, dumpManager, logger) {
+    ) : BroadcastDispatcher(context, bgLooper, dumpManager, logger) {
         override fun createUBRForUser(userId: Int): UserBroadcastDispatcher {
             return mockUBRMap.getOrDefault(userId, mock(UserBroadcastDispatcher::class.java))
         }

packages/SystemUI/tests/src/com/android/systemui/broadcast/FakeBroadcastDispatcher.kt

@@ -30,11 +30,10 @@ import java.util.concurrent.Executor
 
 class FakeBroadcastDispatcher(
     context: SysuiTestableContext,
-    handler: Handler,
     looper: Looper,
     dumpManager: DumpManager,
     logger: BroadcastDispatcherLogger
-) : BroadcastDispatcher(context, handler, looper, dumpManager, logger) {
+) : BroadcastDispatcher(context, looper, dumpManager, logger) {
 
     private val registeredReceivers = ArraySet<BroadcastReceiver>()