qt-everywhere-src-5.14.1/qtconnectivity/examples/bluetooth/btchat/remoteselector.cpp

/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtBluetooth module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "remoteselector.h"
#include "ui_remoteselector.h"

#include <QtBluetooth/qbluetoothlocaldevice.h>
#include <QtBluetooth/qbluetoothservicediscoveryagent.h>

QT_USE_NAMESPACE

RemoteSelector::RemoteSelector(const QBluetoothAddress &localAdapter, QWidget *parent)
    :   QDialog(parent), ui(new Ui::RemoteSelector)
{
    ui->setupUi(this);

    m_discoveryAgent = new QBluetoothServiceDiscoveryAgent(localAdapter);

    connect(m_discoveryAgent, SIGNAL(serviceDiscovered(QBluetoothServiceInfo)),
            this, SLOT(serviceDiscovered(QBluetoothServiceInfo)));
    connect(m_discoveryAgent, SIGNAL(finished()), this, SLOT(discoveryFinished()));
    connect(m_discoveryAgent, SIGNAL(canceled()), this, SLOT(discoveryFinished()));
}

RemoteSelector::~RemoteSelector()
{
    delete ui;
    delete m_discoveryAgent;
}

void RemoteSelector::startDiscovery(const QBluetoothUuid &uuid)
{
    ui->status->setText(tr("Scanning..."));
    if (m_discoveryAgent->isActive())
        m_discoveryAgent->stop();

    ui->remoteDevices->clear();

    m_discoveryAgent->setUuidFilter(uuid);
    m_discoveryAgent->start(QBluetoothServiceDiscoveryAgent::FullDiscovery);

}

void RemoteSelector::stopDiscovery()
{
    if (m_discoveryAgent){
        m_discoveryAgent->stop();
    }
}

QBluetoothServiceInfo RemoteSelector::service() const
{
    return m_service;
}

void RemoteSelector::serviceDiscovered(const QBluetoothServiceInfo &serviceInfo)
{
#if 0
    qDebug() << "Discovered service on"
             << serviceInfo.device().name() << serviceInfo.device().address().toString();
    qDebug() << "\tService name:" << serviceInfo.serviceName();
    qDebug() << "\tDescription:"
             << serviceInfo.attribute(QBluetoothServiceInfo::ServiceDescription).toString();
    qDebug() << "\tProvider:"
             << serviceInfo.attribute(QBluetoothServiceInfo::ServiceProvider).toString();
    qDebug() << "\tL2CAP protocol service multiplexer:"
             << serviceInfo.protocolServiceMultiplexer();
    qDebug() << "\tRFCOMM server channel:" << serviceInfo.serverChannel();
#endif
    const QBluetoothAddress address = serviceInfo.device().address();
    for (const QBluetoothServiceInfo &info : qAsConst(m_discoveredServices)) {
        if (info.device().address() == address)
            return;
    }

    QString remoteName;
    if (serviceInfo.device().name().isEmpty())
        remoteName = address.toString();
    else
        remoteName = serviceInfo.device().name();

    QListWidgetItem *item =
        new QListWidgetItem(QString::fromLatin1("%1 %2").arg(remoteName,
                                                             serviceInfo.serviceName()));

    m_discoveredServices.insert(item, serviceInfo);
    ui->remoteDevices->addItem(item);
}

void RemoteSelector::discoveryFinished()
{
    ui->status->setText(tr("Select the chat service to connect to."));
}

void RemoteSelector::on_remoteDevices_itemActivated(QListWidgetItem *item)
{
    qDebug() << "got click" << item->text();
    m_service = m_discoveredServices.value(item);
    if (m_discoveryAgent->isActive())
        m_discoveryAgent->stop();

    accept();
}

void RemoteSelector::on_cancelButton_clicked()
{
    reject();
}