Fix notification setting summary

Bug: 25926406
Change-Id: I503f2d2def095e37f6b16ca345112fe81ef73e29

AndroidManifest.xml

@@ -2540,7 +2540,7 @@
             <meta-data android:name="com.android.settings.category"
                        android:value="com.android.settings.category.device" />
             <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
-                android:value="com.android.settings.applications.ManageApplications" />
+                android:value="com.android.settings.applications.NotificationApps" />
         </activity>
 
         <!-- Show application-level notification settings (app passed in as extras) -->

res/values/strings.xml

@@ -6971,6 +6971,12 @@
     <!-- Summary of data usage [CHAR LIMIT=NONE] -->
     <string name="data_usage_summary_format"><xliff:g id="amount" example="50%">%1$s</xliff:g> of data used</string>
 
+    <!-- Summary of notifications [CHAR LIMIT=NONE] -->
+    <string name="notification_summary"><xliff:g id="count" example="24">%1$d</xliff:g> apps blocked from sending</string>
+
+    <!-- Summary of notifications when no apps are blocked [CHAR LIMIT=NONE] -->
+    <string name="notification_summary_none">All apps allowed to send</string>
+
     <!-- Summary of apps [CHAR LIMIT=NONE] -->
     <string name="apps_summary"><xliff:g id="count" example="24">%1$d</xliff:g> apps installed</string>
     <!-- Example summary of apps used in Setup Wizard preview screen [CHAR LIMIT=NONE] -->

src/com/android/settings/SettingsActivity.java

@@ -61,6 +61,7 @@ import com.android.settings.applications.DrawOverlayDetails;
 import com.android.settings.applications.InstalledAppDetails;
 import com.android.settings.applications.ManageApplications;
 import com.android.settings.applications.ManageAssist;
+import com.android.settings.applications.NotificationApps;
 import com.android.settings.applications.ProcessStatsSummary;
 import com.android.settings.applications.ProcessStatsUi;
 import com.android.settings.applications.UsageAccessDetails;
@@ -259,6 +260,7 @@ public class SettingsActivity extends SettingsDrawerActivity
             DisplaySettings.class.getName(),
             DeviceInfoSettings.class.getName(),
             ManageApplications.class.getName(),
+            NotificationApps.class.getName(),
             ManageAssist.class.getName(),
             ProcessStatsUi.class.getName(),
             NotificationStation.class.getName(),

src/com/android/settings/applications/AppStateNotificationBridge.java

@@ -63,11 +63,11 @@ public class AppStateNotificationBridge extends AppStateBaseBridge {
 
         @Override
         public boolean filterApp(AppEntry info) {
-            if (info == null) {
-                return false;
-            }
+            if (info.extraInfo instanceof AppRow) {
                 AppRow row = (AppRow) info.extraInfo;
                 return row.banned;
             }
+            return false;
+        }
     };
 }

src/com/android/settings/applications/NotificationApps.java

@@ -0,0 +1,129 @@
+/*
+ * 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.settings.applications;
+
+import android.app.Activity;
+import android.app.Application;
+import android.content.Context;
+import com.android.settings.R;
+import com.android.settings.applications.AppStateBaseBridge.Callback;
+import com.android.settings.dashboard.SummaryLoader;
+import com.android.settings.dashboard.SummaryLoader.SummaryProvider;
+import com.android.settings.notification.NotificationBackend;
+import com.android.settingslib.applications.ApplicationsState;
+import com.android.settingslib.applications.ApplicationsState.AppEntry;
+import com.android.settingslib.applications.ApplicationsState.Callbacks;
+
+import java.util.ArrayList;
+
+/**
+ * Extension of ManageApplications with no changes other than having its own
+ * SummaryProvider.
+ */
+public class NotificationApps extends ManageApplications {
+
+    private static class SummaryProvider implements SummaryLoader.SummaryProvider,
+            Callbacks, Callback {
+
+        private final Context mContext;
+        private final SummaryLoader mLoader;
+
+        private final ApplicationsState mAppState;
+        private final ApplicationsState.Session mSession;
+        private final NotificationBackend mNotifBackend;
+        private final AppStateNotificationBridge mExtraInfoBridge;
+
+        private SummaryProvider(Context context, SummaryLoader loader) {
+            mContext = context;
+            mLoader = loader;
+            mAppState =
+                    ApplicationsState.getInstance((Application) context.getApplicationContext());
+            mSession = mAppState.newSession(this);
+            mNotifBackend = new NotificationBackend();
+            mExtraInfoBridge = new AppStateNotificationBridge(mContext.getPackageManager(),
+                    mAppState, this, mNotifBackend);
+        }
+
+        @Override
+        public void setListening(boolean listening) {
+            if (listening) {
+                mSession.resume();
+                mExtraInfoBridge.resume();
+            } else {
+                mSession.pause();
+                mExtraInfoBridge.pause();
+            }
+        }
+
+        private void updateSummary(ArrayList<AppEntry> apps) {
+            if (apps == null) return;
+            if (apps.size() == 0) {
+                mLoader.setSummary(this, mContext.getString(R.string.notification_summary_none));
+            } else {
+                mLoader.setSummary(this, mContext.getString(R.string.notification_summary,
+                        apps.size()));
+            }
+        }
+
+        @Override
+        public void onRebuildComplete(ArrayList<AppEntry> apps) {
+            updateSummary(apps);
+        }
+
+        @Override
+        public void onExtraInfoUpdated() {
+            updateSummary(mSession.rebuild(
+                    AppStateNotificationBridge.FILTER_APP_NOTIFICATION_BLOCKED,
+                    ApplicationsState.ALPHA_COMPARATOR));
+        }
+
+        @Override
+        public void onPackageListChanged() {
+        }
+
+        @Override
+        public void onLauncherInfoChanged() {
+        }
+
+        @Override
+        public void onLoadEntriesCompleted() {
+        }
+
+        @Override
+        public void onRunningStateChanged(boolean running) {
+        }
+
+        @Override
+        public void onPackageIconChanged() {
+        }
+
+        @Override
+        public void onPackageSizeChanged(String packageName) {
+        }
+
+        @Override
+        public void onAllSizesComputed() {
+        }
+    }
+
+    public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY
+            = new SummaryLoader.SummaryProviderFactory() {
+        @Override
+        public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity,
+                                                                   SummaryLoader summaryLoader) {
+            return new SummaryProvider(activity, summaryLoader);
+        }
+    };
+}