Synchronize with paired devices when a contact changes.

// FREEBIE

src/org/thoughtcrime/securesms/DeviceListActivity.java

@@ -26,6 +26,7 @@ import org.thoughtcrime.securesms.dependencies.InjectableType;
 import org.thoughtcrime.securesms.util.DynamicLanguage;
 import org.thoughtcrime.securesms.util.DynamicTheme;
 import org.thoughtcrime.securesms.util.ProgressDialogAsyncTask;
+import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.whispersystems.textsecure.api.TextSecureAccountManager;
 import org.whispersystems.textsecure.api.messages.multidevice.DeviceInfo;
 
@@ -122,8 +123,12 @@ public class DeviceListActivity extends PassphraseRequiredActionBarActivity {
 
       setListAdapter(new DeviceListAdapter(getActivity(), R.layout.device_list_item_view, data));
 
-      if (data.isEmpty()) empty.setVisibility(View.VISIBLE);
+      if (data.isEmpty()) {
-      else                empty.setVisibility(View.GONE);
+        empty.setVisibility(View.VISIBLE);
+        TextSecurePreferences.setMultiDevice(getActivity(), false);
+      } else {
+        empty.setVisibility(View.GONE);
+      }
     }
 
     @Override

src/org/thoughtcrime/securesms/DeviceProvisioningActivity.java

@@ -20,6 +20,7 @@ import org.thoughtcrime.securesms.crypto.MasterSecret;
 import org.thoughtcrime.securesms.push.TextSecureCommunicationFactory;
 import org.thoughtcrime.securesms.util.Base64;
 import org.thoughtcrime.securesms.util.ProgressDialogAsyncTask;
+import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.whispersystems.libaxolotl.IdentityKeyPair;
 import org.whispersystems.libaxolotl.InvalidKeyException;
 import org.whispersystems.libaxolotl.ecc.Curve;
@@ -111,6 +112,7 @@ public class DeviceProvisioningActivity extends PassphraseRequiredActionBarActiv
           IdentityKeyPair          identityKeyPair  = IdentityKeyUtil.getIdentityKeyPair(context);
 
           accountManager.addDevice(ephemeralId, publicKey, identityKeyPair, verificationCode);
+          TextSecurePreferences.setMultiDevice(context, true);
           return SUCCESS;
 
 

src/org/thoughtcrime/securesms/contacts/ContactsDatabase.java

@@ -70,7 +70,7 @@ public class ContactsDatabase {
     this.context  = context;
   }
 
-  public synchronized void setRegisteredUsers(Account account, List<String> e164numbers)
+  public synchronized boolean setRegisteredUsers(Account account, List<String> e164numbers)
       throws RemoteException, OperationApplicationException
   {
     Map<String, Long>                   currentContacts    = new HashMap<>();
@@ -111,6 +111,9 @@ public class ContactsDatabase {
 
     if (!operations.isEmpty()) {
       context.getContentResolver().applyBatch(ContactsContract.AUTHORITY, operations);
+      return true;
+    } else {
+      return false;
     }
   }
 

src/org/thoughtcrime/securesms/jobs/MultiDeviceContactUpdateJob.java

@@ -101,17 +101,19 @@ public class MultiDeviceContactUpdateJob extends MasterSecretJob implements Inje
   private void sendUpdate(TextSecureMessageSender messageSender, File contactsFile)
       throws IOException, UntrustedIdentityException, NetworkException
   {
-    FileInputStream            contactsFileStream = new FileInputStream(contactsFile);
+    if (contactsFile.length() > 0) {
-    TextSecureAttachmentStream attachmentStream   = TextSecureAttachment.newStreamBuilder()
+      FileInputStream            contactsFileStream = new FileInputStream(contactsFile);
-                                                                        .withStream(contactsFileStream)
+      TextSecureAttachmentStream attachmentStream   = TextSecureAttachment.newStreamBuilder()
-                                                                        .withContentType("application/octet-stream")
+                                                                          .withStream(contactsFileStream)
-                                                                        .withLength(contactsFile.length())
+                                                                          .withContentType("application/octet-stream")
-                                                                        .build();
+                                                                          .withLength(contactsFile.length())
+                                                                          .build();
 
-    try {
+      try {
-      messageSender.sendMessage(TextSecureSyncMessage.forContacts(attachmentStream));
+        messageSender.sendMessage(TextSecureSyncMessage.forContacts(attachmentStream));
-    } catch (IOException ioe) {
+      } catch (IOException ioe) {
-      throw new NetworkException(ioe);
+        throw new NetworkException(ioe);
+      }
     }
   }
 

src/org/thoughtcrime/securesms/util/DirectoryHelper.java

@@ -15,6 +15,7 @@ import org.thoughtcrime.securesms.database.DatabaseFactory;
 import org.thoughtcrime.securesms.database.NotInDirectoryException;
 import org.thoughtcrime.securesms.database.TextSecureDirectory;
 import org.thoughtcrime.securesms.jobs.DirectoryRefreshJob;
+import org.thoughtcrime.securesms.jobs.MultiDeviceContactUpdateJob;
 import org.thoughtcrime.securesms.push.TextSecureCommunicationFactory;
 import org.thoughtcrime.securesms.recipients.Recipients;
 import org.thoughtcrime.securesms.util.DirectoryHelper.UserCapabilities.Capability;
@@ -59,13 +60,9 @@ public class DirectoryHelper {
   private static final String TAG = DirectoryHelper.class.getSimpleName();
 
   public static void refreshDirectory(final Context context) throws IOException {
-    refreshDirectory(context, TextSecureCommunicationFactory.createManager(context));
+    refreshDirectory(context,
-  }
+                     TextSecureCommunicationFactory.createManager(context),
-
+                     TextSecurePreferences.getLocalNumber(context));
-  public static void refreshDirectory(final Context context, final TextSecureAccountManager accountManager)
-      throws IOException
-  {
-    refreshDirectory(context, accountManager, TextSecurePreferences.getLocalNumber(context));
   }
 
   public static void refreshDirectory(final Context context, final TextSecureAccountManager accountManager, final String localNumber)
@@ -92,7 +89,14 @@ public class DirectoryHelper {
         }
 
         try {
-          DatabaseFactory.getContactsDatabase(context).setRegisteredUsers(account.get(), e164numbers);
+          boolean modified = DatabaseFactory.getContactsDatabase(context)
+                                            .setRegisteredUsers(account.get(), e164numbers);
+
+          if (modified && TextSecurePreferences.isMultiDevice(context)) {
+            ApplicationContext.getInstance(context)
+                              .getJobManager()
+                              .add(new MultiDeviceContactUpdateJob(context));
+          }
         } catch (RemoteException | OperationApplicationException e) {
           Log.w(TAG, e);
         }

src/org/thoughtcrime/securesms/util/TextSecurePreferences.java

@@ -90,6 +90,15 @@ public class TextSecurePreferences {
   public  static final String MEDIA_DOWNLOAD_ROAMING_PREF      = "pref_media_download_roaming";
 
   public  static final String SYSTEM_EMOJI_PREF                = "pref_system_emoji";
+  private static final String MULTI_DEVICE_PROVISIONED_PREF    = "pref_multi_device";
+
+  public static void setMultiDevice(Context context, boolean value) {
+    setBooleanPreference(context, MULTI_DEVICE_PROVISIONED_PREF, value);
+  }
+
+  public static boolean isMultiDevice(Context context) {
+    return getBooleanPreference(context, MULTI_DEVICE_PROVISIONED_PREF, false);
+  }
 
   public static NotificationPrivacyPreference getNotificationPrivacy(Context context) {
     return new NotificationPrivacyPreference(getStringPreference(context, NOTIFICATION_PRIVACY_PREF, "all"));