Merge "Update People Space widgets on posted notifications."
diff --git a/packages/SystemUI/src/com/android/systemui/dagger/FrameworkServicesModule.java b/packages/SystemUI/src/com/android/systemui/dagger/FrameworkServicesModule.java
index 79925ba..9705551 100644
--- a/packages/SystemUI/src/com/android/systemui/dagger/FrameworkServicesModule.java
+++ b/packages/SystemUI/src/com/android/systemui/dagger/FrameworkServicesModule.java
@@ -65,6 +65,7 @@
 import android.view.inputmethod.InputMethodManager;
 
 import com.android.internal.app.IBatteryStats;
+import com.android.internal.appwidget.IAppWidgetService;
 import com.android.internal.statusbar.IStatusBarService;
 import com.android.internal.util.LatencyTracker;
 import com.android.systemui.dagger.qualifiers.DisplayId;
@@ -190,6 +191,13 @@
 
     @Provides
     @Singleton
+    static IAppWidgetService provideIAppWidgetService() {
+        return IAppWidgetService.Stub.asInterface(
+                ServiceManager.getService(Context.APPWIDGET_SERVICE));
+    }
+
+    @Provides
+    @Singleton
     static IPackageManager provideIPackageManager() {
         return IPackageManager.Stub.asInterface(ServiceManager.getService("package"));
     }
diff --git a/packages/SystemUI/src/com/android/systemui/people/widget/PeopleSpaceWidgetManager.java b/packages/SystemUI/src/com/android/systemui/people/widget/PeopleSpaceWidgetManager.java
new file mode 100644
index 0000000..8415368
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/people/widget/PeopleSpaceWidgetManager.java
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2020 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.people.widget;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.os.ServiceManager;
+import android.service.notification.NotificationListenerService;
+import android.service.notification.StatusBarNotification;
+import android.util.Log;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.appwidget.IAppWidgetService;
+import com.android.systemui.R;
+import com.android.systemui.people.PeopleSpaceUtils;
+import com.android.systemui.statusbar.NotificationListener;
+import com.android.systemui.statusbar.NotificationListener.NotificationHandler;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+/** Manager for People Space widget. */
+@Singleton
+public class PeopleSpaceWidgetManager {
+    private static final String TAG = "PeopleSpaceWidgetMgr";
+    private static final boolean DEBUG = PeopleSpaceUtils.DEBUG;
+
+    private final Context mContext;
+    private IAppWidgetService mAppWidgetManager;
+
+    @Inject
+    public PeopleSpaceWidgetManager(Context context, IAppWidgetService appWidgetService) {
+        if (DEBUG) Log.d(TAG, "constructor");
+        mContext = context;
+        mAppWidgetManager = appWidgetService;
+    }
+
+    /** Constructor used for testing. */
+    @VisibleForTesting
+    protected PeopleSpaceWidgetManager(Context context) {
+        if (DEBUG) Log.d(TAG, "constructor");
+        mContext = context;
+        mAppWidgetManager = IAppWidgetService.Stub.asInterface(
+                ServiceManager.getService(Context.APPWIDGET_SERVICE));
+    }
+
+    /** AppWidgetManager setter used for testing. */
+    @VisibleForTesting
+    protected void setAppWidgetManager(IAppWidgetService appWidgetService) {
+        mAppWidgetManager = appWidgetService;
+    }
+
+    /** Updates People Space widgets. */
+    public void updateWidgets() {
+        try {
+            if (DEBUG) Log.d(TAG, "updateWidgets called");
+            int[] widgetIds = mAppWidgetManager.getAppWidgetIds(
+                    new ComponentName(mContext, PeopleSpaceWidgetProvider.class)
+            );
+
+            if (widgetIds.length == 0) {
+                if (DEBUG) Log.d(TAG, "no widgets to update");
+                return;
+            }
+
+            if (DEBUG) Log.d(TAG, "updating " + widgetIds.length + " widgets");
+            mAppWidgetManager
+                    .notifyAppWidgetViewDataChanged(mContext.getOpPackageName(), widgetIds,
+                            R.id.widget_list_view);
+        } catch (Exception e) {
+            Log.e(TAG, "Exception: " + e);
+        }
+    }
+
+    /**
+     * Attaches the manager to the pipeline, making it ready to receive events. Should only be
+     * called once.
+     */
+    public void attach(NotificationListener listenerService) {
+        if (DEBUG) Log.d(TAG, "attach");
+        listenerService.addNotificationHandler(mListener);
+    }
+
+    private final NotificationHandler mListener = new NotificationHandler() {
+        @Override
+        public void onNotificationPosted(
+                StatusBarNotification sbn, NotificationListenerService.RankingMap rankingMap) {
+            if (DEBUG) Log.d(TAG, "onNotificationPosted");
+            updateWidgets();
+        }
+
+        @Override
+        public void onNotificationRemoved(
+                StatusBarNotification sbn,
+                NotificationListenerService.RankingMap rankingMap
+        ) {
+            if (DEBUG) Log.d(TAG, "onNotificationRemoved");
+            updateWidgets();
+        }
+
+        @Override
+        public void onNotificationRemoved(
+                StatusBarNotification sbn,
+                NotificationListenerService.RankingMap rankingMap,
+                int reason) {
+            if (DEBUG) Log.d(TAG, "onNotificationRemoved with reason " + reason);
+            updateWidgets();
+        }
+
+        @Override
+        public void onNotificationRankingUpdate(
+                NotificationListenerService.RankingMap rankingMap) { }
+
+        @Override
+        public void onNotificationsInitialized() {
+            if (DEBUG) Log.d(TAG, "onNotificationsInitialized");
+            updateWidgets();
+        }
+    };
+
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/init/NotifPipelineInitializer.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/init/NotifPipelineInitializer.java
index db49e44..4fde118 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/init/NotifPipelineInitializer.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/init/NotifPipelineInitializer.java
@@ -21,6 +21,7 @@
 import com.android.systemui.Dumpable;
 import com.android.systemui.dagger.SysUISingleton;
 import com.android.systemui.dump.DumpManager;
+import com.android.systemui.people.widget.PeopleSpaceWidgetManager;
 import com.android.systemui.statusbar.FeatureFlags;
 import com.android.systemui.statusbar.NotificationListener;
 import com.android.systemui.statusbar.notification.collection.NotifCollection;
@@ -49,6 +50,7 @@
     private final ShadeListBuilder mListBuilder;
     private final NotifCoordinators mNotifPluggableCoordinators;
     private final NotifInflaterImpl mNotifInflater;
+    private final PeopleSpaceWidgetManager mPeopleSpaceWidgetManager;
     private final DumpManager mDumpManager;
     private final ShadeViewManagerFactory mShadeViewManagerFactory;
     private final FeatureFlags mFeatureFlags;
@@ -62,6 +64,7 @@
             ShadeListBuilder listBuilder,
             NotifCoordinators notifCoordinators,
             NotifInflaterImpl notifInflater,
+            PeopleSpaceWidgetManager peopleSpaceWidgetManager,
             DumpManager dumpManager,
             ShadeViewManagerFactory shadeViewManagerFactory,
             FeatureFlags featureFlags) {
@@ -72,6 +75,7 @@
         mNotifPluggableCoordinators = notifCoordinators;
         mDumpManager = dumpManager;
         mNotifInflater = notifInflater;
+        mPeopleSpaceWidgetManager = peopleSpaceWidgetManager;
         mShadeViewManagerFactory = shadeViewManagerFactory;
         mFeatureFlags = featureFlags;
     }
@@ -99,6 +103,7 @@
         mListBuilder.attach(mNotifCollection);
         mNotifCollection.attach(mGroupCoalescer);
         mGroupCoalescer.attach(notificationService);
+        mPeopleSpaceWidgetManager.attach(notificationService);
 
         Log.d(TAG, "Notif pipeline initialized");
     }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/people/widget/PeopleSpaceWidgetManagerTest.java b/packages/SystemUI/tests/src/com/android/systemui/people/widget/PeopleSpaceWidgetManagerTest.java
new file mode 100644
index 0000000..8ceebeb
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/people/widget/PeopleSpaceWidgetManagerTest.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2020 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.people.widget;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import static java.util.Objects.requireNonNull;
+
+import android.content.Context;
+import android.os.RemoteException;
+import android.testing.AndroidTestingRunner;
+
+import androidx.test.filters.SmallTest;
+
+import com.android.internal.appwidget.IAppWidgetService;
+import com.android.systemui.SysuiTestCase;
+import com.android.systemui.statusbar.NotificationListener;
+import com.android.systemui.statusbar.NotificationListener.NotificationHandler;
+import com.android.systemui.statusbar.notification.collection.NoManSimulator;
+import com.android.systemui.statusbar.notification.collection.NoManSimulator.NotifEvent;
+import com.android.systemui.statusbar.notification.collection.NotificationEntryBuilder;
+import com.android.systemui.util.time.FakeSystemClock;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Captor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+@SmallTest
+@RunWith(AndroidTestingRunner.class)
+public class PeopleSpaceWidgetManagerTest extends SysuiTestCase {
+    private static final long MIN_LINGER_DURATION = 5;
+
+    private static final String TEST_PACKAGE_A = "com.test.package_a";
+    private static final String TEST_PACKAGE_B = "com.test.package_b";
+
+    private PeopleSpaceWidgetManager mManager;
+
+    @Mock private NotificationListener mListenerService;
+    @Mock private IAppWidgetService mIAppWidgetService;
+    @Mock private Context mContext;
+
+    @Captor private ArgumentCaptor<NotificationHandler> mListenerCaptor;
+
+    private final NoManSimulator mNoMan = new NoManSimulator();
+    private final FakeSystemClock mClock = new FakeSystemClock();
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mManager =
+                new PeopleSpaceWidgetManager(mContext);
+        mManager.setAppWidgetManager(mIAppWidgetService);
+        mManager.attach(mListenerService);
+
+        verify(mListenerService).addNotificationHandler(mListenerCaptor.capture());
+        NotificationHandler serviceListener = requireNonNull(mListenerCaptor.getValue());
+        mNoMan.addListener(serviceListener);
+    }
+
+
+    @Test
+    public void testDoNotNotifyAppWidgetIfNoWidgets() throws RemoteException {
+        int[] widgetIdsArray = {};
+        when(mIAppWidgetService.getAppWidgetIds(any())).thenReturn(widgetIdsArray);
+
+        NotifEvent notif1 = mNoMan.postNotif(
+                new NotificationEntryBuilder()
+                        .setId(0)
+                        .setPkg(TEST_PACKAGE_A));
+        mClock.advanceTime(MIN_LINGER_DURATION);
+
+        verify(mIAppWidgetService, times(1)).getAppWidgetIds(any());
+        verify(mIAppWidgetService, never()).notifyAppWidgetViewDataChanged(any(), any(), anyInt());
+
+    }
+
+    @Test
+    public void testNotifyAppWidgetIfWidgets() throws RemoteException {
+        int[] widgetIdsArray = {1};
+        when(mIAppWidgetService.getAppWidgetIds(any())).thenReturn(widgetIdsArray);
+
+        NotifEvent notif1 = mNoMan.postNotif(
+                new NotificationEntryBuilder()
+                        .setId(0)
+                        .setPkg(TEST_PACKAGE_A));
+        mClock.advanceTime(MIN_LINGER_DURATION);
+
+        verify(mIAppWidgetService, times(1)).getAppWidgetIds(any());
+        verify(mIAppWidgetService, times(1))
+                .notifyAppWidgetViewDataChanged(any(), eq(widgetIdsArray), anyInt());
+
+    }
+
+    @Test
+    public void testNotifyAppWidgetTwiceIfTwoNotifications() throws RemoteException {
+        int[] widgetIdsArray = {1, 2};
+        when(mIAppWidgetService.getAppWidgetIds(any())).thenReturn(widgetIdsArray);
+
+        NotifEvent notif1 = mNoMan.postNotif(new NotificationEntryBuilder()
+                .setPkg(TEST_PACKAGE_A)
+                .setId(1));
+        mClock.advanceTime(4);
+        NotifEvent notif2 = mNoMan.postNotif(new NotificationEntryBuilder()
+                .setPkg(TEST_PACKAGE_B)
+                .setId(2));
+
+        verify(mIAppWidgetService, times(2)).getAppWidgetIds(any());
+        verify(mIAppWidgetService, times(2))
+                .notifyAppWidgetViewDataChanged(any(), eq(widgetIdsArray), anyInt());
+    }
+
+    @Test
+    public void testNotifyAppWidgetTwiceIfNotificationPostedAndRemoved() throws RemoteException {
+        int[] widgetIdsArray = {1, 2};
+        when(mIAppWidgetService.getAppWidgetIds(any())).thenReturn(widgetIdsArray);
+
+        NotifEvent notif1 = mNoMan.postNotif(new NotificationEntryBuilder()
+                .setPkg(TEST_PACKAGE_A)
+                .setId(1));
+        mClock.advanceTime(4);
+        NotifEvent notif1b = mNoMan.retractNotif(notif1.sbn, 0);
+
+        verify(mIAppWidgetService, times(2)).getAppWidgetIds(any());
+        verify(mIAppWidgetService, times(2))
+                .notifyAppWidgetViewDataChanged(any(), eq(widgetIdsArray), anyInt());
+    }
+}