@Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
      case R.id.menu_delete:
        DialogHelper.showDeleteConversationsDialog((MainActivity) mContext, mAdapter);
        return true;
      case R.id.menu_mark_read:
        for (long threadId : mAdapter.getSelectedItems()) {
          new ConversationLegacy(mContext, threadId).markRead();
        }
        mAdapter.disableMultiSelectMode(true);
        return true;
    }

    return super.onOptionsItemSelected(item);
  }