Do migration in backgrounded service.

src/org/thoughtcrime/securesms/service/ApplicationMigrationService.java

@@ -0,0 +1,133 @@
+package org.thoughtcrime.securesms.service;
+
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Binder;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.PowerManager;
+import android.os.PowerManager.WakeLock;
+import android.widget.RemoteViews;
+
+import org.thoughtcrime.securesms.ConversationListActivity;
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.crypto.MasterSecret;
+import org.thoughtcrime.securesms.database.SmsMigrator;
+
+public class ApplicationMigrationService extends Service
+    implements SmsMigrator.SmsMigrationProgressListener
+  {
+
+  public static final int PROGRESS_UPDATE   = 1;
+  public static final int PROGRESS_COMPLETE = 2;
+
+  public static final String MIGRATE_DATABASE  = "org.thoughtcrime.securesms.ApplicationMigration.MIGRATE_DATABSE";
+
+  private final Binder binder       = new ApplicationMigrationBinder();
+  private boolean isMigrating       = false;
+  private Handler handler           = null;
+  private Notification notification = null;
+
+  @Override
+  public void onStart(Intent intent, int startId) {
+    if (intent.getAction() != null && intent.getAction().equals(MIGRATE_DATABASE)) {
+      handleDatabaseMigration((MasterSecret)intent.getParcelableExtra("master_secret"));
+    }
+  }
+
+  @Override
+  public IBinder onBind(Intent intent) {
+    return binder;
+  }
+
+  private void handleDatabaseMigration(final MasterSecret masterSecret) {
+    this.notification = initializeBackgroundNotification();
+
+    final PowerManager power = (PowerManager)getSystemService(Context.POWER_SERVICE);
+    final WakeLock wakeLock  = power.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Migration");
+
+    new Thread() {
+      @Override
+      public void run() {
+        try {
+          wakeLock.acquire();
+
+          setMigrating(true);
+          SmsMigrator.migrateDatabase(ApplicationMigrationService.this,
+                                      masterSecret,
+                                      ApplicationMigrationService.this);
+          setMigrating(false);
+
+          if (handler != null) {
+            handler.obtainMessage(PROGRESS_COMPLETE).sendToTarget();
+          }
+
+          stopForeground(true);
+        } finally {
+          wakeLock.release();
+          stopService(new Intent(ApplicationMigrationService.this,
+                                 ApplicationMigrationService.class));
+        }
+      }
+    }.start();
+  }
+
+  private Notification initializeBackgroundNotification() {
+    Intent intent               = new Intent(this, ConversationListActivity.class);
+    Notification notification   = new Notification(R.drawable.icon, "Migrating",
+                                                   System.currentTimeMillis());
+
+    notification.flags       = notification.flags | Notification.FLAG_ONGOING_EVENT;
+    notification.contentView = new RemoteViews(getApplicationContext().getPackageName(),
+                                               R.layout.migration_notification_progress);
+
+    notification.contentIntent = PendingIntent.getActivity(getApplicationContext(), 0, intent, 0);
+    notification.contentView.setImageViewResource(R.id.status_icon, R.drawable.icon);
+    notification.contentView.setTextViewText(R.id.status_text, "Migrating System Text Messages");
+    notification.contentView.setProgressBar(R.id.status_progress, 10000, 0, false);
+
+    stopForeground(true);
+    startForeground(4242, notification);
+
+    return notification;
+  }
+
+  private synchronized void setMigrating(boolean isMigrating) {
+    this.isMigrating = isMigrating;
+  }
+
+  public synchronized boolean isMigrating() {
+    return isMigrating;
+  }
+
+  public void setHandler(Handler handler) {
+    this.handler = handler;
+  }
+
+  public class ApplicationMigrationBinder extends Binder {
+    public ApplicationMigrationService getService() {
+      return ApplicationMigrationService.this;
+    }
+  }
+
+  @Override
+  public void progressUpdate(int primaryProgress, int secondaryProgress) {
+    if (handler != null) {
+      handler.obtainMessage(PROGRESS_UPDATE, primaryProgress, secondaryProgress).sendToTarget();
+    }
+
+    if (notification != null && secondaryProgress == 0) {
+      notification.contentView.setProgressBar(R.id.status_progress, 10000, primaryProgress, false);
+
+      NotificationManager notificationManager =
+          (NotificationManager)getApplicationContext()
+            .getSystemService(Context.NOTIFICATION_SERVICE);
+
+      notificationManager.notify(4242, notification);
+    }
+  }
+}