Update Dialer source to latest internal Google revision.

Previously, Android's Dialer app was developed in an internal Google
source control system and only exported to public during AOSP drops.

The Dialer team is now switching to a public development model similar
to the telephony team.

This CL represents all internal Google changes that were committed to
Dialer between the public O release and today's tip of tree on internal
master. This CL squashes those changes into a single commit.
In subsequent changes, changes will be exported on a per-commit basis.

Test: make, flash install, run
Merged-In: I45270eaa8ce732d71a1bd84b08c7fa0e99af3160
Change-Id: I529aaeb88535b9533c0ae4ef4e6c1222d4e0f1c8
PiperOrigin-RevId: 167068436

1 files changed, 123 insertions, 333 deletions

diff --git a/java/com/android/dialer/notification/NotificationChannelManager.java b/java/com/android/dialer/notification/NotificationChannelManager.java
index 88679066d..790aac36f 100644
--- a/java/com/android/dialer/notification/NotificationChannelManager.java
+++ b/java/com/android/dialer/notification/NotificationChannelManager.java
@@ -17,366 +17,156 @@
 package com.android.dialer.notification;
 
 import android.annotation.TargetApi;
-import android.app.Notification;
 import android.app.NotificationChannel;
-import android.app.NotificationChannelGroup;
 import android.app.NotificationManager;
 import android.content.Context;
-import android.content.Intent;
-import android.content.SharedPreferences;
 import android.media.AudioAttributes;
-import android.net.Uri;
 import android.os.Build.VERSION_CODES;
-import android.provider.Settings;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.support.annotation.RequiresApi;
-import android.support.annotation.StringDef;
 import android.support.v4.os.BuildCompat;
-import android.telecom.PhoneAccount;
 import android.telecom.PhoneAccountHandle;
-import android.telecom.TelecomManager;
-import android.telephony.TelephonyManager;
-import com.android.contacts.common.compat.TelephonyManagerCompat;
-import com.android.dialer.buildtype.BuildType;
+import android.util.ArraySet;
+import com.android.dialer.common.Assert;
 import com.android.dialer.common.LogUtil;
-import com.android.dialer.common.concurrent.DialerExecutors;
-import com.android.dialer.telecom.TelecomUtil;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.util.List;
-import java.util.Objects;
+import java.util.Set;
 
-/** Contains info on how to create {@link NotificationChannel NotificationChannels} */
-public class NotificationChannelManager {
-
-  private static final String PREFS_FILENAME = "NotificationChannelManager";
-  private static final String PREF_NEED_FIRST_INIT = "needFirstInit";
-  private static NotificationChannelManager instance;
-
-  public static NotificationChannelManager getInstance() {
-    if (instance == null) {
-      instance = new NotificationChannelManager();
-    }
-    return instance;
-  }
+/** Creates all notification channels for Dialer. */
+@TargetApi(VERSION_CODES.O)
+public final class NotificationChannelManager {
 
   /**
-   * Set the channel of notification appropriately. Will create the channel if it does not already
-   * exist. Safe to call pre-O (will no-op).
+   * Creates all the notification channels Dialer will need. This method is called at app startup
+   * and must be fast. Currently it takes between 3 to 7 milliseconds on a Pixel XL.
+   *
+   * <p>An alternative approach would be to lazily create channels when we actualy post a
+   * notification. The advatange to precreating channels is that:
    *
-   * <p>phoneAccount should only be null if channelName is {@link Channel#DEFAULT} or {@link
-   * Channel#MISSED_CALL} since these do not have account-specific settings.
+   * <ul>
+   *   <li>channels will be available to user right away. For example, users can customize voicemail
+   *       sounds when they first get their device without waiting for a voicemail to arrive first.
+   *   <li>code that posts a notification can be simpler
+   *   <li>channel management code is simpler and it's easier to ensure that the correct set of
+   *       channels are visible.
+   *       <ul>
    */
-  @TargetApi(26)
-  public static void applyChannel(
-      @NonNull Notification.Builder notification,
-      @NonNull Context context,
-      @Channel String channelName,
-      @Nullable PhoneAccountHandle phoneAccount) {
-    checkNullity(channelName, phoneAccount);
-
-    if (BuildCompat.isAtLeastO()) {
-      NotificationChannel channel =
-          NotificationChannelManager.getInstance().getChannel(context, channelName, phoneAccount);
-      notification.setChannelId(channel.getId());
-    }
-  }
-
-  private static void checkNullity(
-      @Channel String channelName, @Nullable PhoneAccountHandle phoneAccount) {
-    if (phoneAccount != null || channelAllowsNullPhoneAccountHandle(channelName)) {
-      return;
-    }
-
-    // TODO (b/36568553): don't throw an exception once most cases have been identified
-    IllegalArgumentException exception =
-        new IllegalArgumentException(
-            "Phone account handle must not be null on channel " + channelName);
-    if (BuildType.get() == BuildType.RELEASE) {
-      LogUtil.e("NotificationChannelManager.applyChannel", null, exception);
-    } else {
-      throw exception;
-    }
-  }
-
-  private static boolean channelAllowsNullPhoneAccountHandle(@Channel String channelName) {
-    switch (channelName) {
-      case Channel.DEFAULT:
-      case Channel.MISSED_CALL:
-        return true;
-      default:
-        return false;
-    }
-  }
+  public static void initChannels(@NonNull Context context) {
+    Assert.checkArgument(BuildCompat.isAtLeastO());
+    Assert.isNotNull(context);
 
-  /** The base Channel IDs for {@link NotificationChannel} */
-  @Retention(RetentionPolicy.SOURCE)
-  @StringDef({
-    Channel.INCOMING_CALL,
-    Channel.ONGOING_CALL,
-    Channel.ONGOING_CALL_OLD,
-    Channel.MISSED_CALL,
-    Channel.VOICEMAIL,
-    Channel.EXTERNAL_CALL,
-    Channel.DEFAULT
-  })
-  public @interface Channel {
-    @Deprecated String ONGOING_CALL_OLD = "ongoingCall";
-    String INCOMING_CALL = "incomingCall";
-    String ONGOING_CALL = "ongoingCall2";
-    String MISSED_CALL = "missedCall";
-    String VOICEMAIL = "voicemail";
-    String EXTERNAL_CALL = "externalCall";
-    String DEFAULT = "default";
-  }
-
-  @Channel
-  private static final String[] prepopulatedAccountChannels =
-      new String[] {Channel.INCOMING_CALL, Channel.ONGOING_CALL, Channel.VOICEMAIL};
-
-  @Channel
-  private static final String[] prepopulatedGlobalChannels =
-      new String[] {Channel.MISSED_CALL, Channel.DEFAULT};
-
-  private NotificationChannelManager() {}
-
-  public void firstInitIfNeeded(@NonNull Context context) {
-    if (BuildCompat.isAtLeastO()) {
-      DialerExecutors.createNonUiTaskBuilder(this::firstInitIfNeededSync)
-          .build()
-          .executeSerial(context);
-    }
-  }
-
-  private boolean firstInitIfNeededSync(@NonNull Context context) {
-    if (needsFirstInit(context)) {
-      initChannels(context);
-      return true;
-    }
-    return false;
-  }
-
-  public boolean needsFirstInit(@NonNull Context context) {
-    return (BuildCompat.isAtLeastO()
-        && getSharedPreferences(context).getBoolean(PREF_NEED_FIRST_INIT, true));
-  }
-
-  @RequiresApi(VERSION_CODES.N)
-  private SharedPreferences getSharedPreferences(@NonNull Context context) {
-    // Use device protected storage since in some cases this will need to be accessed while device
-    // is locked
-    context = context.createDeviceProtectedStorageContext();
-    return context.getSharedPreferences(PREFS_FILENAME, Context.MODE_PRIVATE);
-  }
-
-  @RequiresApi(26)
-  public Intent getSettingsIntentForChannel(
-      @NonNull Context context, @Channel String channelName, PhoneAccountHandle accountHandle) {
-    checkNullity(channelName, accountHandle);
-    Intent intent = new Intent(Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS);
-    intent.putExtra(
-        Settings.EXTRA_CHANNEL_ID, getChannel(context, channelName, accountHandle).getId());
-    intent.putExtra(Settings.EXTRA_APP_PACKAGE, context.getPackageName());
-    return intent;
-  }
+    NotificationManager notificationManager = context.getSystemService(NotificationManager.class);
+    Set<String> desiredChannelIds = getAllDesiredChannelIds(context);
+    Set<String> existingChannelIds = getAllExistingChannelIds(context);
 
-  @TargetApi(26)
-  @SuppressWarnings("AndroidApiChecker")
-  public void initChannels(@NonNull Context context) {
-    if (!BuildCompat.isAtLeastO()) {
+    if (desiredChannelIds.equals(existingChannelIds)) {
       return;
     }
-    LogUtil.enterBlock("NotificationChannelManager.initChannels");
-    List<PhoneAccountHandle> phoneAccounts = TelecomUtil.getCallCapablePhoneAccounts(context);
-
-    // Remove notification channels for PhoneAccounts that don't exist anymore
-    NotificationManager notificationManager = context.getSystemService(NotificationManager.class);
-    List<NotificationChannelGroup> notificationChannelGroups =
-        notificationManager.getNotificationChannelGroups();
-    notificationChannelGroups
-        .stream()
-        .filter(group -> !idExists(group.getId(), phoneAccounts))
-        .forEach(group -> deleteGroup(notificationManager, group));
-
-    for (PhoneAccountHandle phoneAccountHandle : phoneAccounts) {
-      for (@Channel String channel : prepopulatedAccountChannels) {
-        getChannel(context, channel, phoneAccountHandle);
+    LogUtil.i(
+        "NotificationChannelManager.initChannels",
+        "doing an expensive initialization of all notification channels");
+    LogUtil.i(
+        "NotificationChannelManager.initChannels", "desired channel IDs: " + desiredChannelIds);
+    LogUtil.i(
+        "NotificationChannelManager.initChannels", "existing channel IDs: " + existingChannelIds);
+
+    // Delete any old channels that we don't use any more. This is safe because if we're recreate
+    // this later then any user settings will be restored. An example is SIM specific voicemail
+    // channel that gets deleted when the user removes the SIM and is then restored when the user
+    // re-inserts the SIM.
+    for (String existingChannelId : existingChannelIds) {
+      if (!desiredChannelIds.contains(existingChannelId)) {
+        notificationManager.deleteNotificationChannel(existingChannelId);
       }
     }
 
-    for (@Channel String channel : prepopulatedGlobalChannels) {
-      getChannel(context, channel, null);
-    }
-    getSharedPreferences(context).edit().putBoolean(PREF_NEED_FIRST_INIT, false).apply();
-  }
-
-  @TargetApi(26)
-  private void deleteGroup(
-      @NonNull NotificationManager notificationManager, @NonNull NotificationChannelGroup group) {
-    for (NotificationChannel channel : group.getChannels()) {
-      notificationManager.deleteNotificationChannel(channel.getId());
-    }
-    notificationManager.deleteNotificationChannelGroup(group.getId());
-  }
-
-  private boolean idExists(String id, List<PhoneAccountHandle> phoneAccountHandles) {
-    for (PhoneAccountHandle handle : phoneAccountHandles) {
-      if (Objects.equals(handle.getId(), id)) {
-        return true;
-      }
-    }
-    return false;
+    // Just recreate all desired channels. We won't do this often so it's ok to do this now.
+    createIncomingCallChannel(context);
+    createOngoingCallChannel(context);
+    createMissedCallChannel(context);
+    createDefaultChannel(context);
+    VoicemailChannelUtils.createAllChannels(context);
   }
 
   @NonNull
-  @RequiresApi(26)
-  private NotificationChannel getChannel(
-      @NonNull Context context,
-      @Channel String channelName,
-      @Nullable PhoneAccountHandle phoneAccount) {
-    String channelId = channelNameToId(channelName, phoneAccount);
-    NotificationChannel channel = getNotificationManager(context).getNotificationChannel(channelId);
-    if (channel == null) {
-      channel = createChannel(context, channelName, phoneAccount);
-    }
-    return channel;
+  public static String getVoicemailChannelId(
+      @NonNull Context context, @Nullable PhoneAccountHandle handle) {
+    Assert.checkArgument(BuildCompat.isAtLeastO());
+    Assert.isNotNull(context);
+    return VoicemailChannelUtils.getChannelId(context, handle);
   }
 
-  private static String channelNameToId(
-      @Channel String name, @Nullable PhoneAccountHandle phoneAccountHandle) {
-    if (phoneAccountHandle == null) {
-      return name;
-    } else {
-      return name + ":" + phoneAccountHandle.getId();
-    }
-  }
-
-  @RequiresApi(26)
-  private NotificationChannel createChannel(
-      Context context,
-      @Channel String channelName,
-      @Nullable PhoneAccountHandle phoneAccountHandle) {
-    String channelId = channelNameToId(channelName, phoneAccountHandle);
-
-    if (phoneAccountHandle != null) {
-      PhoneAccount account = getTelecomManager(context).getPhoneAccount(phoneAccountHandle);
-      NotificationChannelGroup group =
-          new NotificationChannelGroup(
-              phoneAccountHandle.getId(),
-              (account == null) ? phoneAccountHandle.getId() : account.getLabel().toString());
-      getNotificationManager(context)
-          .createNotificationChannelGroup(group); // No-op if already exists
-    } else if (!channelAllowsNullPhoneAccountHandle(channelName)) {
-      LogUtil.w(
-          "NotificationChannelManager.createChannel",
-          "Null PhoneAccountHandle with channel " + channelName);
-    }
-
-    Uri silentRingtone = Uri.EMPTY;
-
-    CharSequence name;
-    int importance;
-    boolean canShowBadge;
-    boolean lights;
-    boolean vibration;
-    Uri sound;
-    switch (channelName) {
-      case Channel.INCOMING_CALL:
-        name = context.getText(R.string.notification_channel_incoming_call);
-        importance = NotificationManager.IMPORTANCE_MAX;
-        canShowBadge = false;
-        lights = true;
-        vibration = false;
-        sound = silentRingtone;
-        break;
-      case Channel.MISSED_CALL:
-        name = context.getText(R.string.notification_channel_missed_call);
-        importance = NotificationManager.IMPORTANCE_DEFAULT;
-        canShowBadge = true;
-        lights = true;
-        vibration = true;
-        sound = silentRingtone;
-        break;
-      case Channel.ONGOING_CALL:
-        name = context.getText(R.string.notification_channel_ongoing_call);
-        importance = NotificationManager.IMPORTANCE_DEFAULT;
-        canShowBadge = false;
-        lights = false;
-        vibration = false;
-        sound = silentRingtone;
-        deleteOldOngoingCallChannelIfNeeded(context, phoneAccountHandle);
-        break;
-      case Channel.VOICEMAIL:
-        name = context.getText(R.string.notification_channel_voicemail);
-        importance = NotificationManager.IMPORTANCE_DEFAULT;
-        canShowBadge = true;
-        lights = true;
-        vibration =
-            TelephonyManagerCompat.isVoicemailVibrationEnabled(
-                getTelephonyManager(context), phoneAccountHandle);
-        sound =
-            TelephonyManagerCompat.getVoicemailRingtoneUri(
-                getTelephonyManager(context), phoneAccountHandle);
-        break;
-      case Channel.EXTERNAL_CALL:
-        name = context.getText(R.string.notification_channel_external_call);
-        importance = NotificationManager.IMPORTANCE_HIGH;
-        canShowBadge = false;
-        lights = true;
-        vibration = true;
-        sound = null;
-        break;
-      case Channel.DEFAULT:
-        name = context.getText(R.string.notification_channel_misc);
-        importance = NotificationManager.IMPORTANCE_DEFAULT;
-        canShowBadge = false;
-        lights = true;
-        vibration = true;
-        sound = null;
-        break;
-      default:
-        throw new IllegalArgumentException("Unknown channel: " + channelName);
-    }
-
-    NotificationChannel channel = new NotificationChannel(channelId, name, importance);
-    channel.setShowBadge(canShowBadge);
-    if (sound != null) {
-      // silentRingtone acts as a sentinel value to indicate that setSound should still be called,
-      // but with a null value to indicate no sound.
-      channel.setSound(
-          sound.equals(silentRingtone) ? null : sound,
-          new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
-    }
-    channel.enableLights(lights);
-    channel.enableVibration(vibration);
-    getNotificationManager(context).createNotificationChannel(channel);
-    return channel;
-  }
-
-  @RequiresApi(26)
-  private void deleteOldOngoingCallChannelIfNeeded(
-      @NonNull Context context, PhoneAccountHandle phoneAccountHandle) {
-    String channelId = channelNameToId(Channel.ONGOING_CALL_OLD, phoneAccountHandle);
-    NotificationManager notificationManager = getNotificationManager(context);
-    NotificationChannel channel = notificationManager.getNotificationChannel(channelId);
-    if (channel != null) {
-      LogUtil.i(
-          "NotificationManager.deleteOldOngoingCallChannelIfNeeded",
-          "Old ongoing channel found. Deleting to create new channel");
-      notificationManager.deleteNotificationChannel(channel.getId());
-    }
-  }
-
-  private static NotificationManager getNotificationManager(@NonNull Context context) {
-    return context.getSystemService(NotificationManager.class);
-  }
-
-  private static TelephonyManager getTelephonyManager(@NonNull Context context) {
-    return context.getSystemService(TelephonyManager.class);
+  private static Set<String> getAllExistingChannelIds(@NonNull Context context) {
+    Set<String> result = new ArraySet<>();
+    NotificationManager notificationManager = context.getSystemService(NotificationManager.class);
+    for (NotificationChannel channel : notificationManager.getNotificationChannels()) {
+      result.add(channel.getId());
+    }
+    return result;
+  }
+
+  private static Set<String> getAllDesiredChannelIds(@NonNull Context context) {
+    Set<String> result = new ArraySet<>();
+    result.add(NotificationChannelId.INCOMING_CALL);
+    result.add(NotificationChannelId.ONGOING_CALL);
+    result.add(NotificationChannelId.MISSED_CALL);
+    result.add(NotificationChannelId.DEFAULT);
+    result.addAll(VoicemailChannelUtils.getAllChannelIds(context));
+    return result;
+  }
+
+  private static void createIncomingCallChannel(@NonNull Context context) {
+    NotificationChannel channel =
+        new NotificationChannel(
+            NotificationChannelId.INCOMING_CALL,
+            context.getText(R.string.notification_channel_incoming_call),
+            NotificationManager.IMPORTANCE_MAX);
+    channel.setShowBadge(false);
+    channel.enableLights(true);
+    channel.enableVibration(false);
+    channel.setSound(
+        null, new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
+    context.getSystemService(NotificationManager.class).createNotificationChannel(channel);
+  }
+
+  private static void createOngoingCallChannel(@NonNull Context context) {
+    NotificationChannel channel =
+        new NotificationChannel(
+            NotificationChannelId.ONGOING_CALL,
+            context.getText(R.string.notification_channel_ongoing_call),
+            NotificationManager.IMPORTANCE_DEFAULT);
+    channel.setShowBadge(false);
+    channel.enableLights(false);
+    channel.enableVibration(false);
+    channel.setSound(
+        null, new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
+    context.getSystemService(NotificationManager.class).createNotificationChannel(channel);
+  }
+
+  private static void createMissedCallChannel(@NonNull Context context) {
+    NotificationChannel channel =
+        new NotificationChannel(
+            NotificationChannelId.MISSED_CALL,
+            context.getText(R.string.notification_channel_missed_call),
+            NotificationManager.IMPORTANCE_DEFAULT);
+    channel.setShowBadge(true);
+    channel.enableLights(true);
+    channel.enableVibration(true);
+    channel.setSound(
+        null, new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
+    context.getSystemService(NotificationManager.class).createNotificationChannel(channel);
+  }
+
+  private static void createDefaultChannel(@NonNull Context context) {
+    NotificationChannel channel =
+        new NotificationChannel(
+            NotificationChannelId.DEFAULT,
+            context.getText(R.string.notification_channel_misc),
+            NotificationManager.IMPORTANCE_DEFAULT);
+    channel.setShowBadge(false);
+    channel.enableLights(true);
+    channel.enableVibration(true);
+    context.getSystemService(NotificationManager.class).createNotificationChannel(channel);
   }
 
-  private static TelecomManager getTelecomManager(@NonNull Context context) {
-    return context.getSystemService(TelecomManager.class);
-  }
+  private NotificationChannelManager() {}
 }