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++ // Copyright (C) 2017 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "chat.h"
++ #include "chatclient.h"
++ #include "chatserver.h"
++ #include "remoteselector.h"
++ #include "ui_chat.h"
++
++ #include <QDebug>
++
++ #include <QBluetoothDeviceInfo>
++ #include <QBluetoothLocalDevice>
++ #include <QBluetoothUuid>
++
++ #include <QGuiApplication>
++ #include <QStyleHints>
++
++ #if QT_CONFIG(permissions)
++ #include <QCoreApplication>
++ #include <QPermissions>
++
++ #include <QMessageBox>
++ #endif
++
++ using namespace Qt::StringLiterals;
++
++ static constexpr auto serviceUuid = "e8e10f95-1a70-4b27-9ccf-02010264e9c8"_L1;
++ #ifdef Q_OS_ANDROID
++ static constexpr auto reverseUuid = "c8e96402-0102-cf9c-274b-701a950fe1e8"_L1;
++ #endif
++
++ Chat::Chat(QWidget *parent)
++ : QDialog(parent), ui(new Ui::Chat)
++ {
++ //! [Construct UI]
++ ui->setupUi(this);
++
++ connect(ui->connectButton, &QPushButton::clicked, this, &Chat::connectClicked);
++ connect(ui->sendButton, &QPushButton::clicked, this, &Chat::sendClicked);
++ //! [Construct UI]
++ ui->connectButton->setFocus();
++
++ QStyleHints *styleHints = qGuiApp->styleHints();
++ updateIcons(styleHints->colorScheme());
++ connect(styleHints, &QStyleHints::colorSchemeChanged, this, &Chat::updateIcons);
++
++ initBluetooth();
++ }
++
++ Chat::~Chat()
++ {
++ qDeleteAll(clients);
++ delete ui;
++ }
++
++ void Chat::initBluetooth()
++ {
++ #if QT_CONFIG(permissions)
++ QBluetoothPermission permission{};
++ switch (qApp->checkPermission(permission)) {
++ case Qt::PermissionStatus::Undetermined:
++ qApp->requestPermission(permission, this, &Chat::initBluetooth);
++ return;
++ case Qt::PermissionStatus::Denied:
++ QMessageBox::warning(this, tr("Missing permissions"),
++ tr("Permissions are needed to use Bluetooth. "
++ "Please grant the permissions to this "
++ "application in the system settings."));
++ qApp->quit();
++ return;
++ case Qt::PermissionStatus::Granted:
++ break; // proceed to initialization
++ }
++ #endif // QT_CONFIG(permissions)
++
++ localAdapters = QBluetoothLocalDevice::allDevices();
++ if (localAdapters.size() < 2) {
++ ui->localAdapterBox->setVisible(false);
++ } else {
++ //we ignore more than two adapters
++ ui->localAdapterBox->setVisible(true);
++ ui->firstAdapter->setText(tr("Default (%1)", "%1 = Bluetooth address").
++ arg(localAdapters.at(0).address().toString()));
++ ui->secondAdapter->setText(localAdapters.at(1).address().toString());
++ ui->firstAdapter->setChecked(true);
++ connect(ui->firstAdapter, &QRadioButton::clicked, this, &Chat::newAdapterSelected);
++ connect(ui->secondAdapter, &QRadioButton::clicked, this, &Chat::newAdapterSelected);
++ }
++
++ // make discoverable
++ if (!localAdapters.isEmpty()) {
++ QBluetoothLocalDevice adapter(localAdapters.at(0).address());
++ adapter.setHostMode(QBluetoothLocalDevice::HostDiscoverable);
++ } else {
++ qWarning("Local adapter is not found! The application might work incorrectly.");
++ }
++
++ //! [Create Chat Server]
++ server = new ChatServer(this);
++ connect(server, QOverload<const QString &>::of(&ChatServer::clientConnected),
++ this, &Chat::clientConnected);
++ connect(server, QOverload<const QString &>::of(&ChatServer::clientDisconnected),
++ this, QOverload<const QString &>::of(&Chat::clientDisconnected));
++ connect(server, &ChatServer::messageReceived,
++ this, &Chat::showMessage);
++ connect(this, &Chat::sendMessage, server, &ChatServer::sendMessage);
++ server->startServer();
++ //! [Create Chat Server]
++
++ //! [Get local device name]
++ localName = QBluetoothLocalDevice().name();
++ //! [Get local device name]
++ }
++
++ void Chat::updateIcons(Qt::ColorScheme scheme)
++ {
++ const QString bluetoothIconName = (scheme == Qt::ColorScheme::Dark) ? u"bluetooth_dark"_s
++ : u"bluetooth"_s;
++ const QString sendIconName = (scheme == Qt::ColorScheme::Dark) ? u"send_dark"_s : u"send"_s;
++ ui->sendButton->setIcon(QIcon::fromTheme(sendIconName));
++ ui->connectButton->setIcon(QIcon::fromTheme(bluetoothIconName));
++ }
++
++ //! [clientConnected clientDisconnected]
++ void Chat::clientConnected(const QString &name)
++ {
++ ui->chat->insertPlainText(QString::fromLatin1("%1 has joined chat.\n").arg(name));
++ }
++
++ void Chat::clientDisconnected(const QString &name)
++ {
++ ui->chat->insertPlainText(QString::fromLatin1("%1 has left.\n").arg(name));
++ }
++ //! [clientConnected clientDisconnected]
++
++ //! [connected]
++ void Chat::connected(const QString &name)
++ {
++ ui->chat->insertPlainText(QString::fromLatin1("Joined chat with %1.\n").arg(name));
++ }
++ //! [connected]
++
++ void Chat::newAdapterSelected()
++ {
++ const int newAdapterIndex = adapterFromUserSelection();
++ if (currentAdapterIndex != newAdapterIndex) {
++ server->stopServer();
++ currentAdapterIndex = newAdapterIndex;
++ const QBluetoothHostInfo info = localAdapters.at(currentAdapterIndex);
++ QBluetoothLocalDevice adapter(info.address());
++ adapter.setHostMode(QBluetoothLocalDevice::HostDiscoverable);
++ server->startServer(info.address());
++ localName = info.name();
++ }
++ }
++
++ int Chat::adapterFromUserSelection() const
++ {
++ int result = 0;
++ QBluetoothAddress newAdapter = localAdapters.at(0).address();
++
++ if (ui->secondAdapter->isChecked()) {
++ newAdapter = localAdapters.at(1).address();
++ result = 1;
++ }
++ return result;
++ }
++
++ void Chat::reactOnSocketError(const QString &error)
++ {
++ ui->chat->insertPlainText(QString::fromLatin1("%1\n").arg(error));
++ }
++
++ //! [clientDisconnected]
++ void Chat::clientDisconnected()
++ {
++ ChatClient *client = qobject_cast<ChatClient *>(sender());
++ if (client) {
++ clients.removeOne(client);
++ client->deleteLater();
++ }
++ }
++ //! [clientDisconnected]
++
++ //! [Connect to remote service]
++ void Chat::connectClicked()
++ {
++ ui->connectButton->setEnabled(false);
++
++ // scan for services
++ const QBluetoothAddress adapter = localAdapters.isEmpty() ?
++ QBluetoothAddress() :
++ localAdapters.at(currentAdapterIndex).address();
++
++ RemoteSelector remoteSelector(adapter);
++ #ifdef Q_OS_ANDROID
++ // QTBUG-61392
++ Q_UNUSED(serviceUuid);
++ remoteSelector.startDiscovery(QBluetoothUuid(reverseUuid));
++ #else
++ remoteSelector.startDiscovery(QBluetoothUuid(serviceUuid));
++ #endif
++ if (remoteSelector.exec() == QDialog::Accepted) {
++ QBluetoothServiceInfo service = remoteSelector.service();
++
++ qDebug() << "Connecting to service" << service.serviceName()
++ << "on" << service.device().name();
++
++ // Create client
++ ChatClient *client = new ChatClient(this);
++
++ connect(client, &ChatClient::messageReceived,
++ this, &Chat::showMessage);
++ connect(client, &ChatClient::disconnected,
++ this, QOverload<>::of(&Chat::clientDisconnected));
++ connect(client, QOverload<const QString &>::of(&ChatClient::connected),
++ this, &Chat::connected);
++ connect(client, &ChatClient::socketErrorOccurred,
++ this, &Chat::reactOnSocketError);
++ connect(this, &Chat::sendMessage, client, &ChatClient::sendMessage);
++ client->startClient(service);
++
++ clients.append(client);
++ }
++
++ ui->connectButton->setEnabled(true);
++ }
++ //! [Connect to remote service]
++
++ //! [sendClicked]
++ void Chat::sendClicked()
++ {
++ ui->sendButton->setEnabled(false);
++ ui->sendText->setEnabled(false);
++
++ showMessage(localName, ui->sendText->text());
++ emit sendMessage(ui->sendText->text());
++
++ ui->sendText->clear();
++
++ ui->sendText->setEnabled(true);
++ ui->sendButton->setEnabled(true);
++ #if defined(Q_OS_ANDROID) || defined(Q_OS_IOS)
++ // avoid keyboard automatically popping up again on mobile devices
++ ui->sendButton->setFocus();
++ #else
++ ui->sendText->setFocus();
++ #endif
++ }
++ //! [sendClicked]
++
++ //! [showMessage]
++ void Chat::showMessage(const QString &sender, const QString &message)
++ {
++ ui->chat->moveCursor(QTextCursor::End);
++ ui->chat->insertPlainText(QString::fromLatin1("%1: %2\n").arg(sender, message));
++ ui->chat->ensureCursorVisible();
++ }
++ //! [showMessage]