/**
   * Adds the user interface related to the given protocol provider.
   *
   * @param protocolProvider the protocol provider for which we add the user interface
   */
  public void addProtocolProviderUI(ProtocolProviderService protocolProvider) {
    OperationSetBasicTelephony<?> telOpSet =
        protocolProvider.getOperationSet(OperationSetBasicTelephony.class);

    if (telOpSet != null) {
      telOpSet.addCallListener(androidCallListener);
    }

    OperationSetPresence presenceOpSet =
        protocolProvider.getOperationSet(OperationSetPresence.class);

    if (presenceOpSet != null) {
      presenceOpSet.addProviderPresenceStatusListener(androidPresenceListener);
    }
  }
  /**
   * Removes the user interface related to the given protocol provider.
   *
   * @param protocolProvider the protocol provider to remove
   */
  public void removeProtocolProviderUI(ProtocolProviderService protocolProvider) {
    OperationSetBasicTelephony<?> telOpSet =
        protocolProvider.getOperationSet(OperationSetBasicTelephony.class);

    if (telOpSet != null) {
      telOpSet.removeCallListener(androidCallListener);
    }

    OperationSetPresence presenceOpSet =
        protocolProvider.getOperationSet(OperationSetPresence.class);

    if (presenceOpSet != null) {
      presenceOpSet.removeProviderPresenceStatusListener(androidPresenceListener);
    }

    // Removes all chat session for unregistered provider
    ChatSessionManager.removeAllChatsForProvider(protocolProvider);
  }
  /** Initializes "select account" spinner with existing accounts. */
  private void initAccountSpinner() {
    Spinner accountsSpiner = (Spinner) findViewById(R.id.selectAccountSpinner);

    Iterator<ProtocolProviderService> providers = AccountUtils.getRegisteredProviders().iterator();

    List<AccountID> accounts = new ArrayList<AccountID>();

    int selectedIdx = -1;
    int idx = 0;

    while (providers.hasNext()) {
      ProtocolProviderService provider = providers.next();

      OperationSet opSet = provider.getOperationSet(OperationSetPresence.class);

      if (opSet == null) continue;

      AccountID account = provider.getAccountID();
      accounts.add(account);
      idx++;

      if (account.isPreferredProvider()) {
        selectedIdx = idx;
      }
    }

    AccountsListAdapter accountsAdapter =
        new AccountsListAdapter(
            this, R.layout.select_account_row, R.layout.select_account_dropdown, accounts, true);
    accountsSpiner.setAdapter(accountsAdapter);

    // if we have only select account option and only one account
    // select the available account
    if (accounts.size() == 1) accountsSpiner.setSelection(0);
    else accountsSpiner.setSelection(selectedIdx);
  }
  /**
   * Indicates that a protocol provider connection has failed.
   *
   * @param protocolProvider the <tt>ProtocolProviderService</tt>, which connection failed
   * @param loginManagerCallback the <tt>LoginManager</tt> implementation, which is managing the
   *     process
   */
  public void protocolProviderConnectionFailed(
      final ProtocolProviderService protocolProvider, final LoginManager loginManagerCallback) {
    AccountID accountID = protocolProvider.getAccountID();

    AndroidUtils.showAlertConfirmDialog(
        JitsiApplication.getGlobalContext(),
        JitsiApplication.getResString(R.string.service_gui_ERROR),
        JitsiApplication.getResString(
            R.string.service_gui_CONNECTION_FAILED_MSG,
            accountID.getUserID(),
            accountID.getService()),
        JitsiApplication.getResString(R.string.service_gui_RETRY),
        new DialogActivity.DialogListener() {
          public boolean onConfirmClicked(DialogActivity dialog) {
            loginManagerCallback.login(protocolProvider);
            return true;
          }

          public void onDialogCancelled(DialogActivity dialog) {}
        });
  }