Move ListenableFutureTask up to parent.
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package org.whispersystems.textsecure.util;
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public interface FutureTaskListener<V> {
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  public void onSuccess(V result);
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  public void onFailure(Throwable error);
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}
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@ -1,52 +0,0 @@
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package org.whispersystems.textsecure.util;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.concurrent.Callable;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.FutureTask;
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public class ListenableFutureTask<V> extends FutureTask<V> {
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  private final List<FutureTaskListener<V>> listeners;
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  public ListenableFutureTask(Callable<V> callable) {
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    super(callable);
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    this.listeners = new LinkedList<>();
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  }
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  public synchronized void addListener(FutureTaskListener<V> listener) {
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    if (this.isDone()) {
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      callback(listener);
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      return;
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    }
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    listeners.add(listener);
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  }
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  public synchronized boolean removeListener(FutureTaskListener<V> listener) {
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    return listeners.remove(listener);
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  }
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  @Override
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  protected synchronized void done() {
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    callback();
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  }
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  private void callback() {
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    for (FutureTaskListener<V> listener : listeners) {
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      callback(listener);
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    }
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  }
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  private void callback(FutureTaskListener<V> listener) {
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    if (listener != null) {
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      try {
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        listener.onSuccess(get());
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      } catch (ExecutionException ee) {
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        listener.onFailure(ee);
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      } catch (InterruptedException e) {
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        throw new AssertionError(e);
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      }
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    }
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  }
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}
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@ -0,0 +1,22 @@
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					/**
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					 * Copyright (C) 2014 Open Whisper Systems
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					 *
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					 * This program is free software: you can redistribute it and/or modify
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					 * it under the terms of the GNU General Public License as published by
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					 * the Free Software Foundation, either version 3 of the License, or
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					 * (at your option) any later version.
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					 *
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					 * This program is distributed in the hope that it will be useful,
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					 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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					 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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					 * GNU General Public License for more details.
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					 *
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					 * You should have received a copy of the GNU General Public License
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					 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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					 */
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					package org.thoughtcrime.securesms.util;
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					public interface FutureTaskListener<V> {
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					  public void onSuccess(V result);
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					  public void onFailure(Throwable error);
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					}
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@ -0,0 +1,67 @@
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					/**
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					 * Copyright (C) 2014 Open Whisper Systems
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					 *
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					 * This program is free software: you can redistribute it and/or modify
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					 * it under the terms of the GNU General Public License as published by
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					 * the Free Software Foundation, either version 3 of the License, or
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					 * (at your option) any later version.
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					 *
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					 * This program is distributed in the hope that it will be useful,
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					 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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					 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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					 * GNU General Public License for more details.
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					 *
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					 * You should have received a copy of the GNU General Public License
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					 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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					 */
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					package org.thoughtcrime.securesms.util;
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					import java.util.LinkedList;
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					import java.util.List;
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					import java.util.concurrent.Callable;
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					import java.util.concurrent.ExecutionException;
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					import java.util.concurrent.FutureTask;
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					public class ListenableFutureTask<V> extends FutureTask<V> {
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					  private final List<FutureTaskListener<V>> listeners = new LinkedList<>();
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					  public ListenableFutureTask(Callable<V> callable) {
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					    super(callable);
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					  }
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					  public synchronized void addListener(FutureTaskListener<V> listener) {
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					    if (this.isDone()) {
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					      callback(listener);
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					    } else {
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					      this.listeners.add(listener);
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					    }
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					  }
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					  public synchronized void removeListener(FutureTaskListener<V> listener) {
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					    this.listeners.remove(listener);
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					  }
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					  @Override
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					  protected synchronized void done() {
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					    callback();
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					  }
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					  private void callback() {
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					    for (FutureTaskListener<V> listener : listeners) {
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					      callback(listener);
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					    }
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					  }
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					  private void callback(FutureTaskListener<V> listener) {
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					    if (listener != null) {
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					      try {
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					        listener.onSuccess(get());
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					      } catch (InterruptedException e) {
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					        throw new AssertionError(e);
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					      } catch (ExecutionException e) {
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					        listener.onFailure(e);
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					      }
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					    }
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					  }
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					}
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