bitcoingui.cpp

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// Copyright (c) 2011-2019 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <qt/bitcoingui.h>

#include <chain.h>
#include <chainparams.h>
#include <config.h>
#include <interfaces/handler.h>
#include <interfaces/node.h>
#include <node/ui_interface.h>
#include <qt/bitcoinunits.h>
#include <qt/clientmodel.h>
#include <qt/createwalletdialog.h>
#include <qt/guiconstants.h>
#include <qt/guiutil.h>
#ifdef Q_OS_MAC
#include <qt/macdockiconhandler.h>
#endif
#include <qt/modaloverlay.h>
#include <qt/networkstyle.h>
#include <qt/notificator.h>
#include <qt/openuridialog.h>
#include <qt/optionsmodel.h>
#include <qt/platformstyle.h>
#include <qt/rpcconsole.h>
#include <qt/utilitydialog.h>
#ifdef ENABLE_WALLET
#include <qt/walletcontroller.h>
#include <qt/walletframe.h>
#include <qt/walletmodel.h>
#include <qt/walletview.h>
#endif // ENABLE_WALLET
#include <util/system.h>
#include <util/translation.h>
#include <validation.h>

#include <memory>

#include <QAction>
#include <QApplication>
#include <QComboBox>
#include <QDateTime>
#include <QDragEnterEvent>
#include <QListWidget>
#include <QMenu>
#include <QMenuBar>
#include <QMessageBox>
#include <QMimeData>
#include <QProgressDialog>
#include <QScreen>
#include <QSettings>
#include <QShortcut>
#include <QStackedWidget>
#include <QStatusBar>
#include <QStyle>
#include <QSystemTrayIcon>
#include <QTimer>
#include <QToolBar>
#include <QUrlQuery>
#include <QVBoxLayout>
#include <QWindow>

const std::string BitcoinGUI::DEFAULT_UIPLATFORM =
#if defined(Q_OS_MAC)
    "macosx"
#elif defined(Q_OS_WIN)
    "windows"
#else
    "other"
#endif
    ;

BitcoinGUI::BitcoinGUI(interfaces::Node &node, const Config *configIn,
                       const PlatformStyle *_platformStyle,
                       const NetworkStyle *networkStyle, QWidget *parent)
    : QMainWindow(parent), m_node(node), trayIconMenu{new QMenu()},
      config(configIn), platformStyle(_platformStyle),
      m_network_style(networkStyle) {
    QSettings settings;
    if (!restoreGeometry(settings.value("MainWindowGeometry").toByteArray())) {
        // Restore failed (perhaps missing setting), center the window
        move(QGuiApplication::primaryScreen()->availableGeometry().center() -
             frameGeometry().center());
    }

#ifdef ENABLE_WALLET
    enableWallet = WalletModel::isWalletEnabled();
#endif // ENABLE_WALLET
    QApplication::setWindowIcon(m_network_style->getTrayAndWindowIcon());
    setWindowIcon(m_network_style->getTrayAndWindowIcon());
    updateWindowTitle();

    rpcConsole = new RPCConsole(node, _platformStyle, nullptr);
    helpMessageDialog = new HelpMessageDialog(this, false);
#ifdef ENABLE_WALLET
    if (enableWallet) {
        walletFrame = new WalletFrame(_platformStyle, this);
        setCentralWidget(walletFrame);
    } else
#endif // ENABLE_WALLET
    {
        setCentralWidget(rpcConsole);
        Q_EMIT consoleShown(rpcConsole);
    }

    // Accept D&D of URIs
    setAcceptDrops(true);

    // Create actions for the toolbar, menu bar and tray/dock icon
    // Needs walletFrame to be initialized
    createActions();

    // Create application menu bar
    createMenuBar();

    // Create the toolbars
    createToolBars();

    // Create system tray icon and notification
    if (QSystemTrayIcon::isSystemTrayAvailable()) {
        createTrayIcon();
    }
    notificator =
        new Notificator(QApplication::applicationName(), trayIcon, this);

    // Create status bar
    statusBar();

    // Disable size grip because it looks ugly and nobody needs it
    statusBar()->setSizeGripEnabled(false);

    // Status bar notification icons
    QFrame *frameBlocks = new QFrame();
    frameBlocks->setContentsMargins(0, 0, 0, 0);
    frameBlocks->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
    QHBoxLayout *frameBlocksLayout = new QHBoxLayout(frameBlocks);
    frameBlocksLayout->setContentsMargins(3, 0, 3, 0);
    frameBlocksLayout->setSpacing(3);
    unitDisplayControl = new UnitDisplayStatusBarControl(platformStyle);
    labelWalletEncryptionIcon = new QLabel();
    labelWalletHDStatusIcon = new QLabel();
    labelProxyIcon = new GUIUtil::ClickableLabel();
    connectionsControl = new GUIUtil::ClickableLabel();
    labelBlocksIcon = new GUIUtil::ClickableLabel();
    if (enableWallet) {
        frameBlocksLayout->addStretch();
        frameBlocksLayout->addWidget(unitDisplayControl);
        frameBlocksLayout->addStretch();
        frameBlocksLayout->addWidget(labelWalletEncryptionIcon);
        frameBlocksLayout->addWidget(labelWalletHDStatusIcon);
    }
    frameBlocksLayout->addWidget(labelProxyIcon);
    frameBlocksLayout->addStretch();
    frameBlocksLayout->addWidget(connectionsControl);
    frameBlocksLayout->addStretch();
    frameBlocksLayout->addWidget(labelBlocksIcon);
    frameBlocksLayout->addStretch();

    // Progress bar and label for blocks download
    progressBarLabel = new QLabel();
    progressBarLabel->setVisible(false);
    progressBar = new GUIUtil::ProgressBar();
    progressBar->setAlignment(Qt::AlignCenter);
    progressBar->setVisible(false);

    // Override style sheet for progress bar for styles that have a segmented
    // progress bar, as they make the text unreadable (workaround for issue
    // #1071)
    // See https://doc.qt.io/qt-5/gallery.html
    QString curStyle = QApplication::style()->metaObject()->className();
    if (curStyle == "QWindowsStyle" || curStyle == "QWindowsXPStyle") {
        progressBar->setStyleSheet(
            "QProgressBar { background-color: #e8e8e8; border: 1px solid grey; "
            "border-radius: 7px; padding: 1px; text-align: center; } "
            "QProgressBar::chunk { background: QLinearGradient(x1: 0, y1: 0, "
            "x2: 1, y2: 0, stop: 0 #FF8000, stop: 1 orange); border-radius: "
            "7px; margin: 0px; }");
    }

    statusBar()->addWidget(progressBarLabel);
    statusBar()->addWidget(progressBar);
    statusBar()->addPermanentWidget(frameBlocks);

    // Install event filter to be able to catch status tip events
    // (QEvent::StatusTip)
    this->installEventFilter(this);

    // Initially wallet actions should be disabled
    setWalletActionsEnabled(false);

    // Subscribe to notifications from core
    subscribeToCoreSignals();

    connect(connectionsControl, &GUIUtil::ClickableLabel::clicked,
            [this] { m_node.setNetworkActive(!m_node.getNetworkActive()); });
    connect(labelProxyIcon, &GUIUtil::ClickableLabel::clicked,
            [this] { openOptionsDialogWithTab(OptionsDialog::TAB_NETWORK); });

    modalOverlay = new ModalOverlay(enableWallet, this->centralWidget());
    connect(labelBlocksIcon, &GUIUtil::ClickableLabel::clicked, this,
            &BitcoinGUI::showModalOverlay);
    connect(progressBar, &GUIUtil::ClickableProgressBar::clicked, this,
            &BitcoinGUI::showModalOverlay);
#ifdef ENABLE_WALLET
    if (enableWallet) {
        connect(walletFrame, &WalletFrame::requestedSyncWarningInfo, this,
                &BitcoinGUI::showModalOverlay);
    }
#endif

#ifdef Q_OS_MAC
    m_app_nap_inhibitor = new CAppNapInhibitor;
#endif
}

BitcoinGUI::~BitcoinGUI() {
    // Unsubscribe from notifications from core
    unsubscribeFromCoreSignals();

    QSettings settings;
    settings.setValue("MainWindowGeometry", saveGeometry());
    // Hide tray icon, as deleting will let it linger until quit (on Ubuntu)
    if (trayIcon) {
        trayIcon->hide();
    }
#ifdef Q_OS_MAC
    delete m_app_nap_inhibitor;
    delete appMenuBar;
    MacDockIconHandler::cleanup();
#endif

    delete rpcConsole;
}

void BitcoinGUI::createActions() {
    QActionGroup *tabGroup = new QActionGroup(this);

    overviewAction =
        new QAction(platformStyle->SingleColorIcon(":/icons/overview"),
                    tr("&Overview"), this);
    overviewAction->setStatusTip(tr("Show general overview of wallet"));
    overviewAction->setToolTip(overviewAction->statusTip());
    overviewAction->setCheckable(true);
    overviewAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_1));
    tabGroup->addAction(overviewAction);

    sendCoinsAction = new QAction(
        platformStyle->SingleColorIcon(":/icons/send"), tr("&Send"), this);
    sendCoinsAction->setStatusTip(tr("Send coins to a Bitcoin address"));
    sendCoinsAction->setToolTip(sendCoinsAction->statusTip());
    sendCoinsAction->setCheckable(true);
    sendCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_2));
    tabGroup->addAction(sendCoinsAction);

    sendCoinsMenuAction = new QAction(sendCoinsAction->text(), this);
    sendCoinsMenuAction->setStatusTip(sendCoinsAction->statusTip());
    sendCoinsMenuAction->setToolTip(sendCoinsMenuAction->statusTip());

    receiveCoinsAction = new QAction(
        platformStyle->SingleColorIcon(":/icons/receiving_addresses"),
        tr("&Receive"), this);
    receiveCoinsAction->setStatusTip(
        tr("Request payments (generates QR codes and %1: URIs)")
            .arg(QString::fromStdString(
                config->GetChainParams().CashAddrPrefix())));
    receiveCoinsAction->setToolTip(receiveCoinsAction->statusTip());
    receiveCoinsAction->setCheckable(true);
    receiveCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_3));
    tabGroup->addAction(receiveCoinsAction);

    receiveCoinsMenuAction = new QAction(receiveCoinsAction->text(), this);
    receiveCoinsMenuAction->setStatusTip(receiveCoinsAction->statusTip());
    receiveCoinsMenuAction->setToolTip(receiveCoinsMenuAction->statusTip());

    historyAction =
        new QAction(platformStyle->SingleColorIcon(":/icons/history"),
                    tr("&Transactions"), this);
    historyAction->setStatusTip(tr("Browse transaction history"));
    historyAction->setToolTip(historyAction->statusTip());
    historyAction->setCheckable(true);
    historyAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_4));
    tabGroup->addAction(historyAction);

#ifdef ENABLE_WALLET
    // These showNormalIfMinimized are needed because Send Coins and Receive
    // Coins can be triggered from the tray menu, and need to show the GUI to be
    // useful.
    connect(overviewAction, &QAction::triggered,
            [this] { showNormalIfMinimized(); });
    connect(overviewAction, &QAction::triggered, this,
            &BitcoinGUI::gotoOverviewPage);
    connect(sendCoinsAction, &QAction::triggered,
            [this] { showNormalIfMinimized(); });
    connect(sendCoinsAction, &QAction::triggered,
            [this] { gotoSendCoinsPage(); });
    connect(sendCoinsMenuAction, &QAction::triggered,
            [this] { showNormalIfMinimized(); });
    connect(sendCoinsMenuAction, &QAction::triggered,
            [this] { gotoSendCoinsPage(); });
    connect(receiveCoinsAction, &QAction::triggered,
            [this] { showNormalIfMinimized(); });
    connect(receiveCoinsAction, &QAction::triggered, this,
            &BitcoinGUI::gotoReceiveCoinsPage);
    connect(receiveCoinsMenuAction, &QAction::triggered,
            [this] { showNormalIfMinimized(); });
    connect(receiveCoinsMenuAction, &QAction::triggered, this,
            &BitcoinGUI::gotoReceiveCoinsPage);
    connect(historyAction, &QAction::triggered,
            [this] { showNormalIfMinimized(); });
    connect(historyAction, &QAction::triggered, this,
            &BitcoinGUI::gotoHistoryPage);
#endif // ENABLE_WALLET

    quitAction = new QAction(tr("E&xit"), this);
    quitAction->setStatusTip(tr("Quit application"));
    quitAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
    quitAction->setMenuRole(QAction::QuitRole);
    aboutAction = new QAction(tr("&About %1").arg(PACKAGE_NAME), this);
    aboutAction->setStatusTip(
        tr("Show information about %1").arg(PACKAGE_NAME));
    aboutAction->setMenuRole(QAction::AboutRole);
    aboutAction->setEnabled(false);
    aboutQtAction = new QAction(tr("About &Qt"), this);
    aboutQtAction->setStatusTip(tr("Show information about Qt"));
    aboutQtAction->setMenuRole(QAction::AboutQtRole);
    optionsAction = new QAction(tr("&Options..."), this);
    optionsAction->setStatusTip(
        tr("Modify configuration options for %1").arg(PACKAGE_NAME));
    optionsAction->setMenuRole(QAction::PreferencesRole);
    optionsAction->setEnabled(false);
    toggleHideAction = new QAction(tr("&Show / Hide"), this);
    toggleHideAction->setStatusTip(tr("Show or hide the main Window"));

    encryptWalletAction = new QAction(tr("&Encrypt Wallet..."), this);
    encryptWalletAction->setStatusTip(
        tr("Encrypt the private keys that belong to your wallet"));
    encryptWalletAction->setCheckable(true);
    backupWalletAction = new QAction(tr("&Backup Wallet..."), this);
    backupWalletAction->setStatusTip(tr("Backup wallet to another location"));
    changePassphraseAction = new QAction(tr("&Change Passphrase..."), this);
    changePassphraseAction->setStatusTip(
        tr("Change the passphrase used for wallet encryption"));
    signMessageAction = new QAction(tr("Sign &message..."), this);
    signMessageAction->setStatusTip(
        tr("Sign messages with your Bitcoin addresses to prove you own them"));
    verifyMessageAction = new QAction(tr("&Verify message..."), this);
    verifyMessageAction->setStatusTip(
        tr("Verify messages to ensure they were signed with specified Bitcoin "
           "addresses"));
    m_load_psbt_action = new QAction(tr("Load PSBT..."), this);
    m_load_psbt_action->setStatusTip(
        tr("Load Partially Signed Bitcoin Transaction"));

    openRPCConsoleAction = new QAction(tr("&Debug window"), this);
    openRPCConsoleAction->setStatusTip(
        tr("Open node debugging and diagnostic console"));
    // initially disable the debug window menu item
    openRPCConsoleAction->setEnabled(false);
    openRPCConsoleAction->setObjectName("openRPCConsoleAction");

    usedSendingAddressesAction = new QAction(tr("&Sending addresses"), this);
    usedSendingAddressesAction->setStatusTip(
        tr("Show the list of used sending addresses and labels"));
    usedReceivingAddressesAction =
        new QAction(tr("&Receiving addresses"), this);
    usedReceivingAddressesAction->setStatusTip(
        tr("Show the list of used receiving addresses and labels"));

    openAction = new QAction(tr("Open &URI..."), this);
    openAction->setStatusTip(
        tr("Open a %1: URI or payment request")
            .arg(QString::fromStdString(
                config->GetChainParams().CashAddrPrefix())));

    m_open_wallet_action = new QAction(tr("Open Wallet"), this);
    m_open_wallet_action->setEnabled(false);
    m_open_wallet_action->setStatusTip(tr("Open a wallet"));
    m_open_wallet_menu = new QMenu(this);

    m_close_wallet_action = new QAction(tr("Close Wallet..."), this);
    m_close_wallet_action->setStatusTip(tr("Close wallet"));

    m_create_wallet_action = new QAction(tr("Create Wallet..."), this);
    m_create_wallet_action->setEnabled(false);
    m_create_wallet_action->setStatusTip(tr("Create a new wallet"));

    showHelpMessageAction = new QAction(tr("&Command-line options"), this);
    showHelpMessageAction->setMenuRole(QAction::NoRole);
    showHelpMessageAction->setStatusTip(
        tr("Show the %1 help message to get a list with possible Bitcoin "
           "command-line options")
            .arg(PACKAGE_NAME));

    connect(quitAction, &QAction::triggered, qApp, QApplication::quit);
    connect(aboutAction, &QAction::triggered, this, &BitcoinGUI::aboutClicked);
    connect(aboutQtAction, &QAction::triggered, qApp, QApplication::aboutQt);
    connect(optionsAction, &QAction::triggered, this,
            &BitcoinGUI::optionsClicked);
    connect(toggleHideAction, &QAction::triggered, this,
            &BitcoinGUI::toggleHidden);
    connect(showHelpMessageAction, &QAction::triggered, this,
            &BitcoinGUI::showHelpMessageClicked);
    connect(openRPCConsoleAction, &QAction::triggered, this,
            &BitcoinGUI::showDebugWindow);
    // prevents an open debug window from becoming stuck/unusable on client
    // shutdown
    connect(quitAction, &QAction::triggered, rpcConsole, &QWidget::hide);

#ifdef ENABLE_WALLET
    if (walletFrame) {
        connect(encryptWalletAction, &QAction::triggered, walletFrame,
                &WalletFrame::encryptWallet);
        connect(backupWalletAction, &QAction::triggered, walletFrame,
                &WalletFrame::backupWallet);
        connect(changePassphraseAction, &QAction::triggered, walletFrame,
                &WalletFrame::changePassphrase);
        connect(signMessageAction, &QAction::triggered,
                [this] { showNormalIfMinimized(); });
        connect(signMessageAction, &QAction::triggered,
                [this] { gotoSignMessageTab(); });
        connect(verifyMessageAction, &QAction::triggered,
                [this] { showNormalIfMinimized(); });
        connect(verifyMessageAction, &QAction::triggered,
                [this] { gotoVerifyMessageTab(); });
        connect(m_load_psbt_action, &QAction::triggered,
                [this] { gotoLoadPSBT(); });
        connect(usedSendingAddressesAction, &QAction::triggered, walletFrame,
                &WalletFrame::usedSendingAddresses);
        connect(usedReceivingAddressesAction, &QAction::triggered, walletFrame,
                &WalletFrame::usedReceivingAddresses);
        connect(openAction, &QAction::triggered, this,
                &BitcoinGUI::openClicked);
        connect(m_open_wallet_menu, &QMenu::aboutToShow, [this] {
            m_open_wallet_menu->clear();
            for (const std::pair<const std::string, bool> &i :
                 m_wallet_controller->listWalletDir()) {
                const std::string &path = i.first;
                QString name = path.empty()
                                   ? QString("[" + tr("default wallet") + "]")
                                   : QString::fromStdString(path);
                // Menu items remove single &. Single & are shown when && is in
                // the string, but only the first occurrence. So replace only
                // the first & with &&
                name.replace(name.indexOf(QChar('&')), 1, QString("&&"));
                QAction *action = m_open_wallet_menu->addAction(name);

                if (i.second) {
                    // This wallet is already loaded
                    action->setEnabled(false);
                    continue;
                }

                connect(action, &QAction::triggered, [this, path] {
                    auto activity =
                        new OpenWalletActivity(m_wallet_controller, this,
                                               this->config->GetChainParams());
                    connect(activity, &OpenWalletActivity::opened, this,
                            &BitcoinGUI::setCurrentWallet);
                    connect(activity, &OpenWalletActivity::finished, activity,
                            &QObject::deleteLater);
                    activity->open(path);
                });
            }
            if (m_open_wallet_menu->isEmpty()) {
                QAction *action =
                    m_open_wallet_menu->addAction(tr("No wallets available"));
                action->setEnabled(false);
            }
        });
        connect(m_close_wallet_action, &QAction::triggered, [this] {
            m_wallet_controller->closeWallet(walletFrame->currentWalletModel(),
                                             this);
        });
        connect(m_create_wallet_action, &QAction::triggered, [this] {
            auto activity = new CreateWalletActivity(
                m_wallet_controller, this, this->config->GetChainParams());
            connect(activity, &CreateWalletActivity::created, this,
                    &BitcoinGUI::setCurrentWallet);
            connect(activity, &CreateWalletActivity::finished, activity,
                    &QObject::deleteLater);
            activity->create();
        });
    }
#endif // ENABLE_WALLET

    connect(new QShortcut(QKeySequence(Qt::CTRL + Qt::SHIFT + Qt::Key_C), this),
            &QShortcut::activated, this,
            &BitcoinGUI::showDebugWindowActivateConsole);
    connect(new QShortcut(QKeySequence(Qt::CTRL + Qt::SHIFT + Qt::Key_D), this),
            &QShortcut::activated, this, &BitcoinGUI::showDebugWindow);
}

void BitcoinGUI::createMenuBar() {
#ifdef Q_OS_MAC
    // Create a decoupled menu bar on Mac which stays even if the window is
    // closed
    appMenuBar = new QMenuBar();
#else
    // Get the main window's menu bar on other platforms
    appMenuBar = menuBar();
#endif

    // Configure the menus
    QMenu *file = appMenuBar->addMenu(tr("&File"));
    if (walletFrame) {
        file->addAction(m_create_wallet_action);
        file->addAction(m_open_wallet_action);
        file->addAction(m_close_wallet_action);
        file->addSeparator();
        file->addAction(openAction);
        file->addAction(backupWalletAction);
        file->addAction(signMessageAction);
        file->addAction(verifyMessageAction);
        file->addAction(m_load_psbt_action);
        file->addSeparator();
    }
    file->addAction(quitAction);

    QMenu *settings = appMenuBar->addMenu(tr("&Settings"));
    if (walletFrame) {
        settings->addAction(encryptWalletAction);
        settings->addAction(changePassphraseAction);
        settings->addSeparator();
    }
    settings->addAction(optionsAction);

    QMenu *window_menu = appMenuBar->addMenu(tr("&Window"));

    QAction *minimize_action = window_menu->addAction(tr("Minimize"));
    minimize_action->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_M));
    connect(minimize_action, &QAction::triggered,
            [] { QApplication::activeWindow()->showMinimized(); });
    connect(qApp, &QApplication::focusWindowChanged,
            [minimize_action](QWindow *window) {
                minimize_action->setEnabled(
                    window != nullptr &&
                    (window->flags() & Qt::Dialog) != Qt::Dialog &&
                    window->windowState() != Qt::WindowMinimized);
            });

#ifdef Q_OS_MAC
    QAction *zoom_action = window_menu->addAction(tr("Zoom"));
    connect(zoom_action, &QAction::triggered, [] {
        QWindow *window = qApp->focusWindow();
        if (window->windowState() != Qt::WindowMaximized) {
            window->showMaximized();
        } else {
            window->showNormal();
        }
    });

    connect(qApp, &QApplication::focusWindowChanged,
            [zoom_action](QWindow *window) {
                zoom_action->setEnabled(window != nullptr);
            });
#endif

    if (walletFrame) {
#ifdef Q_OS_MAC
        window_menu->addSeparator();
        QAction *main_window_action = window_menu->addAction(tr("Main Window"));
        connect(main_window_action, &QAction::triggered,
                [this] { GUIUtil::bringToFront(this); });
#endif
        window_menu->addSeparator();
        window_menu->addAction(usedSendingAddressesAction);
        window_menu->addAction(usedReceivingAddressesAction);
    }

    window_menu->addSeparator();
    for (RPCConsole::TabTypes tab_type : rpcConsole->tabs()) {
        QAction *tab_action =
            window_menu->addAction(rpcConsole->tabTitle(tab_type));
        tab_action->setShortcut(rpcConsole->tabShortcut(tab_type));
        connect(tab_action, &QAction::triggered, [this, tab_type] {
            rpcConsole->setTabFocus(tab_type);
            showDebugWindow();
        });
    }

    QMenu *help = appMenuBar->addMenu(tr("&Help"));
    help->addAction(showHelpMessageAction);
    help->addSeparator();
    help->addAction(aboutAction);
    help->addAction(aboutQtAction);
}

void BitcoinGUI::createToolBars() {
    if (walletFrame) {
        QToolBar *toolbar = addToolBar(tr("Tabs toolbar"));
        appToolBar = toolbar;
        toolbar->setContextMenuPolicy(Qt::PreventContextMenu);
        toolbar->setMovable(false);
        toolbar->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
        toolbar->addAction(overviewAction);
        toolbar->addAction(sendCoinsAction);
        toolbar->addAction(receiveCoinsAction);
        toolbar->addAction(historyAction);
        overviewAction->setChecked(true);

#ifdef ENABLE_WALLET
        QWidget *spacer = new QWidget();
        spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
        toolbar->addWidget(spacer);

        m_wallet_selector = new QComboBox();
        m_wallet_selector->setSizeAdjustPolicy(QComboBox::AdjustToContents);
        connect(m_wallet_selector,
                static_cast<void (QComboBox::*)(int)>(
                    &QComboBox::currentIndexChanged),
                this, &BitcoinGUI::setCurrentWalletBySelectorIndex);

        m_wallet_selector_label = new QLabel();
        m_wallet_selector_label->setText(tr("Wallet:") + " ");
        m_wallet_selector_label->setBuddy(m_wallet_selector);

        m_wallet_selector_label_action =
            appToolBar->addWidget(m_wallet_selector_label);
        m_wallet_selector_action = appToolBar->addWidget(m_wallet_selector);

        m_wallet_selector_label_action->setVisible(false);
        m_wallet_selector_action->setVisible(false);
#endif
    }
}

void BitcoinGUI::setClientModel(ClientModel *_clientModel) {
    this->clientModel = _clientModel;
    if (_clientModel) {
        // Create system tray menu (or setup the dock menu) that late to prevent
        // users from calling actions, while the client has not yet fully loaded
        createTrayIconMenu();

        // Keep up to date with client
        updateNetworkState();
        connect(_clientModel, &ClientModel::numConnectionsChanged, this,
                &BitcoinGUI::setNumConnections);
        connect(_clientModel, &ClientModel::networkActiveChanged, this,
                &BitcoinGUI::setNetworkActive);

        modalOverlay->setKnownBestHeight(
            _clientModel->getHeaderTipHeight(),
            QDateTime::fromTime_t(_clientModel->getHeaderTipTime()));
        setNumBlocks(m_node.getNumBlocks(),
                     QDateTime::fromTime_t(m_node.getLastBlockTime()),
                     m_node.getVerificationProgress(), false,
                     SynchronizationState::INIT_DOWNLOAD);
        connect(_clientModel, &ClientModel::numBlocksChanged, this,
                &BitcoinGUI::setNumBlocks);

        // Receive and report messages from client model
        connect(_clientModel, &ClientModel::message,
                [this](const QString &title, const QString &message,
                       unsigned int style) {
                    this->message(title, message, style);
                });

        // Show progress dialog
        connect(_clientModel, &ClientModel::showProgress, this,
                &BitcoinGUI::showProgress);

        rpcConsole->setClientModel(_clientModel);

        updateProxyIcon();

#ifdef ENABLE_WALLET
        if (walletFrame) {
            walletFrame->setClientModel(_clientModel);
        }
#endif // ENABLE_WALLET
        unitDisplayControl->setOptionsModel(_clientModel->getOptionsModel());

        OptionsModel *optionsModel = _clientModel->getOptionsModel();
        if (optionsModel && trayIcon) {
            // be aware of the tray icon disable state change reported by the
            // OptionsModel object.
            connect(optionsModel, &OptionsModel::hideTrayIconChanged, this,
                    &BitcoinGUI::setTrayIconVisible);

            // initialize the disable state of the tray icon with the current
            // value in the model.
            setTrayIconVisible(optionsModel->getHideTrayIcon());
        }
    } else {
        // Disable possibility to show main window via action
        toggleHideAction->setEnabled(false);
        if (trayIconMenu) {
            // Disable context menu on tray icon
            trayIconMenu->clear();
        }
        // Propagate cleared model to child objects
        rpcConsole->setClientModel(nullptr);
#ifdef ENABLE_WALLET
        if (walletFrame) {
            walletFrame->setClientModel(nullptr);
        }
#endif // ENABLE_WALLET
        unitDisplayControl->setOptionsModel(nullptr);
    }
}

#ifdef ENABLE_WALLET
void BitcoinGUI::setWalletController(WalletController *wallet_controller) {
    assert(!m_wallet_controller);
    assert(wallet_controller);

    m_wallet_controller = wallet_controller;

    m_create_wallet_action->setEnabled(true);
    m_open_wallet_action->setEnabled(true);
    m_open_wallet_action->setMenu(m_open_wallet_menu);

    connect(wallet_controller, &WalletController::walletAdded, this,
            &BitcoinGUI::addWallet);
    connect(wallet_controller, &WalletController::walletRemoved, this,
            &BitcoinGUI::removeWallet);

    for (WalletModel *wallet_model : m_wallet_controller->getOpenWallets()) {
        addWallet(wallet_model);
    }
}

void BitcoinGUI::addWallet(WalletModel *walletModel) {
    if (!walletFrame) {
        return;
    }
    if (!walletFrame->addWallet(walletModel)) {
        return;
    }
    const QString display_name = walletModel->getDisplayName();
    setWalletActionsEnabled(true);
    rpcConsole->addWallet(walletModel);
    m_wallet_selector->addItem(display_name, QVariant::fromValue(walletModel));
    if (m_wallet_selector->count() == 2) {
        m_wallet_selector_label_action->setVisible(true);
        m_wallet_selector_action->setVisible(true);
    }
}

void BitcoinGUI::removeWallet(WalletModel *walletModel) {
    if (!walletFrame) {
        return;
    }

    labelWalletHDStatusIcon->hide();
    labelWalletEncryptionIcon->hide();

    int index = m_wallet_selector->findData(QVariant::fromValue(walletModel));
    m_wallet_selector->removeItem(index);
    if (m_wallet_selector->count() == 0) {
        setWalletActionsEnabled(false);
    } else if (m_wallet_selector->count() == 1) {
        m_wallet_selector_label_action->setVisible(false);
        m_wallet_selector_action->setVisible(false);
    }
    rpcConsole->removeWallet(walletModel);
    walletFrame->removeWallet(walletModel);
    updateWindowTitle();
}

void BitcoinGUI::setCurrentWallet(WalletModel *wallet_model) {
    if (!walletFrame) {
        return;
    }
    walletFrame->setCurrentWallet(wallet_model);
    for (int index = 0; index < m_wallet_selector->count(); ++index) {
        if (m_wallet_selector->itemData(index).value<WalletModel *>() ==
            wallet_model) {
            m_wallet_selector->setCurrentIndex(index);
            break;
        }
    }
    updateWindowTitle();
}

void BitcoinGUI::setCurrentWalletBySelectorIndex(int index) {
    WalletModel *wallet_model =
        m_wallet_selector->itemData(index).value<WalletModel *>();
    if (wallet_model) {
        setCurrentWallet(wallet_model);
    }
}

void BitcoinGUI::removeAllWallets() {
    if (!walletFrame) {
        return;
    }
    setWalletActionsEnabled(false);
    walletFrame->removeAllWallets();
}
#endif // ENABLE_WALLET

void BitcoinGUI::setWalletActionsEnabled(bool enabled) {
    overviewAction->setEnabled(enabled);
    sendCoinsAction->setEnabled(enabled);
    sendCoinsMenuAction->setEnabled(enabled);
    receiveCoinsAction->setEnabled(enabled);
    receiveCoinsMenuAction->setEnabled(enabled);
    historyAction->setEnabled(enabled);
    encryptWalletAction->setEnabled(enabled);
    backupWalletAction->setEnabled(enabled);
    changePassphraseAction->setEnabled(enabled);
    signMessageAction->setEnabled(enabled);
    verifyMessageAction->setEnabled(enabled);
    usedSendingAddressesAction->setEnabled(enabled);
    usedReceivingAddressesAction->setEnabled(enabled);
    openAction->setEnabled(enabled);
    m_close_wallet_action->setEnabled(enabled);
}

void BitcoinGUI::createTrayIcon() {
    assert(QSystemTrayIcon::isSystemTrayAvailable());

#ifndef Q_OS_MAC
    if (QSystemTrayIcon::isSystemTrayAvailable()) {
        trayIcon =
            new QSystemTrayIcon(m_network_style->getTrayAndWindowIcon(), this);
        QString toolTip = tr("%1 client").arg(PACKAGE_NAME) + " " +
                          m_network_style->getTitleAddText();
        trayIcon->setToolTip(toolTip);
    }
#endif
}

void BitcoinGUI::createTrayIconMenu() {
#ifndef Q_OS_MAC
    // Return if trayIcon is unset (only on non-macOSes)
    if (!trayIcon) {
        return;
    }

    trayIcon->setContextMenu(trayIconMenu.get());
    connect(trayIcon, &QSystemTrayIcon::activated, this,
            &BitcoinGUI::trayIconActivated);
#else
    // Note: On macOS, the Dock icon is used to provide the tray's
    // functionality.
    MacDockIconHandler *dockIconHandler = MacDockIconHandler::instance();
    connect(dockIconHandler, &MacDockIconHandler::dockIconClicked, this,
            &BitcoinGUI::macosDockIconActivated);
    trayIconMenu->setAsDockMenu();
#endif

    // Configuration of the tray icon (or Dock icon) menu
#ifndef Q_OS_MAC
    // Note: On macOS, the Dock icon's menu already has Show / Hide action.
    trayIconMenu->addAction(toggleHideAction);
    trayIconMenu->addSeparator();
#endif
    if (enableWallet) {
        trayIconMenu->addAction(sendCoinsMenuAction);
        trayIconMenu->addAction(receiveCoinsMenuAction);
        trayIconMenu->addSeparator();
        trayIconMenu->addAction(signMessageAction);
        trayIconMenu->addAction(verifyMessageAction);
        trayIconMenu->addSeparator();
    }
    trayIconMenu->addAction(optionsAction);
    trayIconMenu->addAction(openRPCConsoleAction);
#ifndef Q_OS_MAC
    // This is built-in on macOS
    trayIconMenu->addSeparator();
    trayIconMenu->addAction(quitAction);
#endif
}

#ifndef Q_OS_MAC
void BitcoinGUI::trayIconActivated(QSystemTrayIcon::ActivationReason reason) {
    if (reason == QSystemTrayIcon::Trigger) {
        // Click on system tray icon triggers show/hide of the main window
        toggleHidden();
    }
}
#else
void BitcoinGUI::macosDockIconActivated() {
    show();
    activateWindow();
}
#endif

void BitcoinGUI::optionsClicked() {
    openOptionsDialogWithTab(OptionsDialog::TAB_MAIN);
}

void BitcoinGUI::aboutClicked() {
    if (!clientModel) {
        return;
    }

    HelpMessageDialog dlg(this, true);
    dlg.exec();
}

void BitcoinGUI::showDebugWindow() {
    GUIUtil::bringToFront(rpcConsole);
    Q_EMIT consoleShown(rpcConsole);
}

void BitcoinGUI::showDebugWindowActivateConsole() {
    rpcConsole->setTabFocus(RPCConsole::TabTypes::CONSOLE);
    showDebugWindow();
}

void BitcoinGUI::showHelpMessageClicked() {
    helpMessageDialog->show();
}

#ifdef ENABLE_WALLET
void BitcoinGUI::openClicked() {
    OpenURIDialog dlg(config->GetChainParams(), this);
    if (dlg.exec()) {
        Q_EMIT receivedURI(dlg.getURI());
    }
}

void BitcoinGUI::gotoOverviewPage() {
    overviewAction->setChecked(true);
    if (walletFrame) {
        walletFrame->gotoOverviewPage();
    }
}

void BitcoinGUI::gotoHistoryPage() {
    historyAction->setChecked(true);
    if (walletFrame) {
        walletFrame->gotoHistoryPage();
    }
}

void BitcoinGUI::gotoReceiveCoinsPage() {
    receiveCoinsAction->setChecked(true);
    if (walletFrame) {
        walletFrame->gotoReceiveCoinsPage();
    }
}

void BitcoinGUI::gotoSendCoinsPage(QString addr) {
    sendCoinsAction->setChecked(true);
    if (walletFrame) {
        walletFrame->gotoSendCoinsPage(addr);
    }
}

void BitcoinGUI::gotoSignMessageTab(QString addr) {
    if (walletFrame) {
        walletFrame->gotoSignMessageTab(addr);
    }
}

void BitcoinGUI::gotoVerifyMessageTab(QString addr) {
    if (walletFrame) {
        walletFrame->gotoVerifyMessageTab(addr);
    }
}
void BitcoinGUI::gotoLoadPSBT() {
    if (walletFrame) {
        walletFrame->gotoLoadPSBT();
    }
}
#endif // ENABLE_WALLET

void BitcoinGUI::updateNetworkState() {
    int count = clientModel->getNumConnections();
    QString icon;
    switch (count) {
        case 0:
            icon = ":/icons/connect_0";
            break;
        case 1:
        case 2:
        case 3:
            icon = ":/icons/connect_1";
            break;
        case 4:
        case 5:
        case 6:
            icon = ":/icons/connect_2";
            break;
        case 7:
        case 8:
        case 9:
            icon = ":/icons/connect_3";
            break;
        default:
            icon = ":/icons/connect_4";
            break;
    }

    QString tooltip;

    if (m_node.getNetworkActive()) {
        tooltip = tr("%n active connection(s) to Bitcoin network", "", count) +
                  QString(".<br>") + tr("Click to disable network activity.");
    } else {
        tooltip = tr("Network activity disabled.") + QString("<br>") +
                  tr("Click to enable network activity again.");
        icon = ":/icons/network_disabled";
    }

    // Don't word-wrap this (fixed-width) tooltip
    tooltip = QString("<nobr>") + tooltip + QString("</nobr>");
    connectionsControl->setToolTip(tooltip);

    connectionsControl->setPixmap(platformStyle->SingleColorIcon(icon).pixmap(
        STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
}

void BitcoinGUI::setNumConnections(int count) {
    updateNetworkState();
}

void BitcoinGUI::setNetworkActive(bool networkActive) {
    updateNetworkState();
}

void BitcoinGUI::updateHeadersSyncProgressLabel() {
    int64_t headersTipTime = clientModel->getHeaderTipTime();
    int headersTipHeight = clientModel->getHeaderTipHeight();
    int estHeadersLeft =
        (GetTime() - headersTipTime) /
        config->GetChainParams().GetConsensus().nPowTargetSpacing;
    if (estHeadersLeft > HEADER_HEIGHT_DELTA_SYNC) {
        progressBarLabel->setText(
            tr("Syncing Headers (%1%)...")
                .arg(QString::number(100.0 /
                                         (headersTipHeight + estHeadersLeft) *
                                         headersTipHeight,
                                     'f', 1)));
    }
}

void BitcoinGUI::openOptionsDialogWithTab(OptionsDialog::Tab tab) {
    if (!clientModel || !clientModel->getOptionsModel()) {
        return;
    }

    OptionsDialog dlg(this, enableWallet);
    dlg.setCurrentTab(tab);
    dlg.setModel(clientModel->getOptionsModel());
    dlg.exec();
}

void BitcoinGUI::setNumBlocks(int count, const QDateTime &blockDate,
                              double nVerificationProgress, bool header,
                              SynchronizationState sync_state) {
// Disabling macOS App Nap on initial sync, disk and reindex operations.
#ifdef Q_OS_MAC
    if (sync_state == SynchronizationState::POST_INIT) {
        m_app_nap_inhibitor->enableAppNap();
    } else {
        m_app_nap_inhibitor->disableAppNap();
    }
#endif

    if (modalOverlay) {
        if (header) {
            modalOverlay->setKnownBestHeight(count, blockDate);
        } else {
            modalOverlay->tipUpdate(count, blockDate, nVerificationProgress);
        }
    }
    if (!clientModel) {
        return;
    }

    // Prevent orphan statusbar messages (e.g. hover Quit in main menu, wait
    // until chain-sync starts -> garbled text)
    statusBar()->clearMessage();

    // Acquire current block source
    enum BlockSource blockSource = clientModel->getBlockSource();
    switch (blockSource) {
        case BlockSource::NETWORK:
            if (header) {
                updateHeadersSyncProgressLabel();
                return;
            }
            progressBarLabel->setText(tr("Synchronizing with network..."));
            updateHeadersSyncProgressLabel();
            break;
        case BlockSource::DISK:
            if (header) {
                progressBarLabel->setText(tr("Indexing blocks on disk..."));
            } else {
                progressBarLabel->setText(tr("Processing blocks on disk..."));
            }
            break;
        case BlockSource::REINDEX:
            progressBarLabel->setText(tr("Reindexing blocks on disk..."));
            break;
        case BlockSource::NONE:
            if (header) {
                return;
            }
            progressBarLabel->setText(tr("Connecting to peers..."));
            break;
    }

    QString tooltip;

    QDateTime currentDate = QDateTime::currentDateTime();
    qint64 secs = blockDate.secsTo(currentDate);

    tooltip = tr("Processed %n block(s) of transaction history.", "", count);

    // Set icon state: spinning if catching up, tick otherwise
    if (secs < MAX_BLOCK_TIME_GAP) {
        tooltip = tr("Up to date") + QString(".<br>") + tooltip;
        labelBlocksIcon->setPixmap(
            platformStyle->SingleColorIcon(":/icons/synced")
                .pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));

#ifdef ENABLE_WALLET
        if (walletFrame) {
            walletFrame->showOutOfSyncWarning(false);
            modalOverlay->showHide(true, true);
        }
#endif // ENABLE_WALLET

        progressBarLabel->setVisible(false);
        progressBar->setVisible(false);
    } else {
        QString timeBehindText = GUIUtil::formatNiceTimeOffset(secs);

        progressBarLabel->setVisible(true);
        progressBar->setFormat(tr("%1 behind").arg(timeBehindText));
        progressBar->setMaximum(1000000000);
        progressBar->setValue(nVerificationProgress * 1000000000.0 + 0.5);
        progressBar->setVisible(true);

        tooltip = tr("Catching up...") + QString("<br>") + tooltip;
        if (count != prevBlocks) {
            labelBlocksIcon->setPixmap(
                platformStyle
                    ->SingleColorIcon(QString(":/movies/spinner-%1")
                                          .arg(spinnerFrame, 3, 10, QChar('0')))
                    .pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
            spinnerFrame = (spinnerFrame + 1) % SPINNER_FRAMES;
        }
        prevBlocks = count;

#ifdef ENABLE_WALLET
        if (walletFrame) {
            walletFrame->showOutOfSyncWarning(true);
            modalOverlay->showHide();
        }
#endif // ENABLE_WALLET

        tooltip += QString("<br>");
        tooltip +=
            tr("Last received block was generated %1 ago.").arg(timeBehindText);
        tooltip += QString("<br>");
        tooltip += tr("Transactions after this will not yet be visible.");
    }

    // Don't word-wrap this (fixed-width) tooltip
    tooltip = QString("<nobr>") + tooltip + QString("</nobr>");

    labelBlocksIcon->setToolTip(tooltip);
    progressBarLabel->setToolTip(tooltip);
    progressBar->setToolTip(tooltip);
}

void BitcoinGUI::message(const QString &title, QString message,
                         unsigned int style, bool *ret,
                         const QString &detailed_message) {
    // Default title. On macOS, the window title is ignored (as required by the
    // macOS Guidelines).
    QString strTitle{PACKAGE_NAME};
    // Default to information icon
    int nMBoxIcon = QMessageBox::Information;
    int nNotifyIcon = Notificator::Information;

    QString msgType;
    if (!title.isEmpty()) {
        msgType = title;
    } else {
        switch (style) {
            case CClientUIInterface::MSG_ERROR:
                msgType = tr("Error");
                message = tr("Error: %1").arg(message);
                break;
            case CClientUIInterface::MSG_WARNING:
                msgType = tr("Warning");
                message = tr("Warning: %1").arg(message);
                break;
            case CClientUIInterface::MSG_INFORMATION:
                msgType = tr("Information");
                // No need to prepend the prefix here.
                break;
            default:
                break;
        }
    }

    if (!msgType.isEmpty()) {
        strTitle += " - " + msgType;
    }

    if (style & CClientUIInterface::ICON_ERROR) {
        nMBoxIcon = QMessageBox::Critical;
        nNotifyIcon = Notificator::Critical;
    } else if (style & CClientUIInterface::ICON_WARNING) {
        nMBoxIcon = QMessageBox::Warning;
        nNotifyIcon = Notificator::Warning;
    }

    if (style & CClientUIInterface::MODAL) {
        // Check for buttons, use OK as default, if none was supplied
        QMessageBox::StandardButton buttons;
        if (!(buttons = (QMessageBox::StandardButton)(
                  style & CClientUIInterface::BTN_MASK))) {
            buttons = QMessageBox::Ok;
        }

        showNormalIfMinimized();
        QMessageBox mBox(static_cast<QMessageBox::Icon>(nMBoxIcon), strTitle,
                         message, buttons, this);
        mBox.setTextFormat(Qt::PlainText);
        mBox.setDetailedText(detailed_message);
        int r = mBox.exec();
        if (ret != nullptr) {
            *ret = r == QMessageBox::Ok;
        }
    } else {
        notificator->notify(static_cast<Notificator::Class>(nNotifyIcon),
                            strTitle, message);
    }
}

void BitcoinGUI::changeEvent(QEvent *e) {
    QMainWindow::changeEvent(e);
#ifndef Q_OS_MAC // Ignored on Mac
    if (e->type() == QEvent::WindowStateChange) {
        if (clientModel && clientModel->getOptionsModel() &&
            clientModel->getOptionsModel()->getMinimizeToTray()) {
            QWindowStateChangeEvent *wsevt =
                static_cast<QWindowStateChangeEvent *>(e);
            if (!(wsevt->oldState() & Qt::WindowMinimized) && isMinimized()) {
                QTimer::singleShot(0, this, &BitcoinGUI::hide);
                e->ignore();
            } else if ((wsevt->oldState() & Qt::WindowMinimized) &&
                       !isMinimized()) {
                QTimer::singleShot(0, this, &BitcoinGUI::show);
                e->ignore();
            }
        }
    }
#endif
}

void BitcoinGUI::closeEvent(QCloseEvent *event) {
#ifndef Q_OS_MAC // Ignored on Mac
    if (clientModel && clientModel->getOptionsModel()) {
        if (!clientModel->getOptionsModel()->getMinimizeOnClose()) {
            // close rpcConsole in case it was open to make some space for the
            // shutdown window
            rpcConsole->close();

            QApplication::quit();
        } else {
            QMainWindow::showMinimized();
            event->ignore();
        }
    }
#else
    QMainWindow::closeEvent(event);
#endif
}

void BitcoinGUI::showEvent(QShowEvent *event) {
    // enable the debug window when the main window shows up
    openRPCConsoleAction->setEnabled(true);
    aboutAction->setEnabled(true);
    optionsAction->setEnabled(true);
}

#ifdef ENABLE_WALLET
void BitcoinGUI::incomingTransaction(const QString &date, int unit,
                                     const Amount amount, const QString &type,
                                     const QString &address,
                                     const QString &label,
                                     const QString &walletName) {
    // On new transaction, make an info balloon
    QString msg = tr("Date: %1\n").arg(date) +
                  tr("Amount: %1\n")
                      .arg(BitcoinUnits::formatWithUnit(unit, amount, true));
    if (m_node.getWallets().size() > 1 && !walletName.isEmpty()) {
        msg += tr("Wallet: %1\n").arg(walletName);
    }
    msg += tr("Type: %1\n").arg(type);
    if (!label.isEmpty()) {
        msg += tr("Label: %1\n").arg(label);
    } else if (!address.isEmpty()) {
        msg += tr("Address: %1\n").arg(address);
    }
    message(amount < Amount::zero() ? tr("Sent transaction")
                                    : tr("Incoming transaction"),
            msg, CClientUIInterface::MSG_INFORMATION);
}
#endif // ENABLE_WALLET

void BitcoinGUI::dragEnterEvent(QDragEnterEvent *event) {
    // Accept only URIs
    if (event->mimeData()->hasUrls()) {
        event->acceptProposedAction();
    }
}

void BitcoinGUI::dropEvent(QDropEvent *event) {
    if (event->mimeData()->hasUrls()) {
        for (const QUrl &uri : event->mimeData()->urls()) {
            Q_EMIT receivedURI(uri.toString());
        }
    }
    event->acceptProposedAction();
}

bool BitcoinGUI::eventFilter(QObject *object, QEvent *event) {
    // Catch status tip events
    if (event->type() == QEvent::StatusTip) {
        // Prevent adding text from setStatusTip(), if we currently use the
        // status bar for displaying other stuff
        if (progressBarLabel->isVisible() || progressBar->isVisible()) {
            return true;
        }
    }
    return QMainWindow::eventFilter(object, event);
}

#ifdef ENABLE_WALLET
bool BitcoinGUI::handlePaymentRequest(const SendCoinsRecipient &recipient) {
    // URI has to be valid
    if (walletFrame && walletFrame->handlePaymentRequest(recipient)) {
        showNormalIfMinimized();
        gotoSendCoinsPage();
        return true;
    }
    return false;
}

void BitcoinGUI::setHDStatus(bool privkeyDisabled, int hdEnabled) {
    labelWalletHDStatusIcon->setPixmap(
        platformStyle
            ->SingleColorIcon(privkeyDisabled
                                  ? ":/icons/eye"
                                  : hdEnabled ? ":/icons/hd_enabled"
                                              : ":/icons/hd_disabled")
            .pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
    labelWalletHDStatusIcon->setToolTip(
        privkeyDisabled
            ? tr("Private key <b>disabled</b>")
            : hdEnabled ? tr("HD key generation is <b>enabled</b>")
                        : tr("HD key generation is <b>disabled</b>"));
    labelWalletHDStatusIcon->show();
    // eventually disable the QLabel to set its opacity to 50%
    labelWalletHDStatusIcon->setEnabled(hdEnabled);
}

void BitcoinGUI::setEncryptionStatus(int status) {
    switch (status) {
        case WalletModel::Unencrypted:
            labelWalletEncryptionIcon->hide();
            encryptWalletAction->setChecked(false);
            changePassphraseAction->setEnabled(false);
            encryptWalletAction->setEnabled(true);
            break;
        case WalletModel::Unlocked:
            labelWalletEncryptionIcon->show();
            labelWalletEncryptionIcon->setPixmap(
                platformStyle->SingleColorIcon(":/icons/lock_open")
                    .pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
            labelWalletEncryptionIcon->setToolTip(
                tr("Wallet is <b>encrypted</b> and currently <b>unlocked</b>"));
            encryptWalletAction->setChecked(true);
            changePassphraseAction->setEnabled(true);
            encryptWalletAction->setEnabled(
                false); // TODO: decrypt currently not supported
            break;
        case WalletModel::Locked:
            labelWalletEncryptionIcon->show();
            labelWalletEncryptionIcon->setPixmap(
                platformStyle->SingleColorIcon(":/icons/lock_closed")
                    .pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
            labelWalletEncryptionIcon->setToolTip(
                tr("Wallet is <b>encrypted</b> and currently <b>locked</b>"));
            encryptWalletAction->setChecked(true);
            changePassphraseAction->setEnabled(true);
            encryptWalletAction->setEnabled(
                false); // TODO: decrypt currently not supported
            break;
    }
}

void BitcoinGUI::updateWalletStatus() {
    if (!walletFrame) {
        return;
    }
    WalletView *const walletView = walletFrame->currentWalletView();
    if (!walletView) {
        return;
    }
    WalletModel *const walletModel = walletView->getWalletModel();
    setEncryptionStatus(walletModel->getEncryptionStatus());
    setHDStatus(walletModel->wallet().privateKeysDisabled(),
                walletModel->wallet().hdEnabled());
}
#endif // ENABLE_WALLET

void BitcoinGUI::updateProxyIcon() {
    std::string ip_port;
    bool proxy_enabled = clientModel->getProxyInfo(ip_port);

    if (proxy_enabled) {
        if (!labelProxyIcon->hasPixmap()) {
            QString ip_port_q = QString::fromStdString(ip_port);
            labelProxyIcon->setPixmap(
                platformStyle->SingleColorIcon(":/icons/proxy")
                    .pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
            labelProxyIcon->setToolTip(
                tr("Proxy is <b>enabled</b>: %1").arg(ip_port_q));
        } else {
            labelProxyIcon->show();
        }
    } else {
        labelProxyIcon->hide();
    }
}

void BitcoinGUI::updateWindowTitle() {
    QString window_title = PACKAGE_NAME;
#ifdef ENABLE_WALLET
    if (walletFrame) {
        WalletModel *const wallet_model = walletFrame->currentWalletModel();
        if (wallet_model && !wallet_model->getWalletName().isEmpty()) {
            window_title += " - " + wallet_model->getDisplayName();
        }
    }
#endif
    if (!m_network_style->getTitleAddText().isEmpty()) {
        window_title += " - " + m_network_style->getTitleAddText();
    }
    setWindowTitle(window_title);
}

void BitcoinGUI::showNormalIfMinimized(bool fToggleHidden) {
    if (!clientModel) {
        return;
    }

    if (!isHidden() && !isMinimized() && !GUIUtil::isObscured(this) &&
        fToggleHidden) {
        hide();
    } else {
        GUIUtil::bringToFront(this);
    }
}

void BitcoinGUI::toggleHidden() {
    showNormalIfMinimized(true);
}

void BitcoinGUI::detectShutdown() {
    if (m_node.shutdownRequested()) {
        if (rpcConsole) {
            rpcConsole->hide();
        }
        qApp->quit();
    }
}

void BitcoinGUI::showProgress(const QString &title, int nProgress) {
    if (nProgress == 0) {
        progressDialog = new QProgressDialog(title, QString(), 0, 100);
        GUIUtil::PolishProgressDialog(progressDialog);
        progressDialog->setWindowModality(Qt::ApplicationModal);
        progressDialog->setMinimumDuration(0);
        progressDialog->setAutoClose(false);
        progressDialog->setValue(0);
    } else if (nProgress == 100) {
        if (progressDialog) {
            progressDialog->close();
            progressDialog->deleteLater();
            progressDialog = nullptr;
        }
    } else if (progressDialog) {
        progressDialog->setValue(nProgress);
    }
}

void BitcoinGUI::setTrayIconVisible(bool fHideTrayIcon) {
    if (trayIcon) {
        trayIcon->setVisible(!fHideTrayIcon);
    }
}

void BitcoinGUI::showModalOverlay() {
    if (modalOverlay &&
        (progressBar->isVisible() || modalOverlay->isLayerVisible())) {
        modalOverlay->toggleVisibility();
    }
}

static bool ThreadSafeMessageBox(BitcoinGUI *gui, const bilingual_str &message,
                                 const std::string &caption,
                                 unsigned int style) {
    bool modal = (style & CClientUIInterface::MODAL);
    // The SECURE flag has no effect in the Qt GUI.
    // bool secure = (style & CClientUIInterface::SECURE);
    style &= ~CClientUIInterface::SECURE;
    bool ret = false;
    // This is original message, in English, for googling and referencing.
    QString detailed_message;
    if (message.original != message.translated) {
        detailed_message = BitcoinGUI::tr("Original message:") + "\n" +
                           QString::fromStdString(message.original);
    }

    // In case of modal message, use blocking connection to wait for user to
    // click a button
    bool invoked = QMetaObject::invokeMethod(
        gui, "message",
        modal ? GUIUtil::blockingGUIThreadConnection() : Qt::QueuedConnection,
        Q_ARG(QString, QString::fromStdString(caption)),
        Q_ARG(QString, QString::fromStdString(message.translated)),
        Q_ARG(unsigned int, style), Q_ARG(bool *, &ret),
        Q_ARG(QString, detailed_message));
    assert(invoked);
    return ret;
}

void BitcoinGUI::subscribeToCoreSignals() {
    // Connect signals to client
    m_handler_message_box = m_node.handleMessageBox(
        std::bind(ThreadSafeMessageBox, this, std::placeholders::_1,
                  std::placeholders::_2, std::placeholders::_3));
    m_handler_question = m_node.handleQuestion(
        std::bind(ThreadSafeMessageBox, this, std::placeholders::_1,
                  std::placeholders::_3, std::placeholders::_4));
}

void BitcoinGUI::unsubscribeFromCoreSignals() {
    // Disconnect signals from client
    m_handler_message_box->disconnect();
    m_handler_question->disconnect();
}

UnitDisplayStatusBarControl::UnitDisplayStatusBarControl(
    const PlatformStyle *platformStyle)
    : optionsModel(nullptr), menu(nullptr) {
    createContextMenu();
    setToolTip(tr("Unit to show amounts in. Click to select another unit."));
    QList<BitcoinUnits::Unit> units = BitcoinUnits::availableUnits();
    int max_width = 0;
    const QFontMetrics fm(font());
    for (const BitcoinUnits::Unit unit : units) {
        max_width = qMax(max_width,
                         GUIUtil::TextWidth(fm, BitcoinUnits::longName(unit)));
    }
    setMinimumSize(max_width, 0);
    setAlignment(Qt::AlignRight | Qt::AlignVCenter);
    setStyleSheet(QString("QLabel { color : %1 }")
                      .arg(platformStyle->SingleColor().name()));
}

void UnitDisplayStatusBarControl::mousePressEvent(QMouseEvent *event) {
    onDisplayUnitsClicked(event->pos());
}

void UnitDisplayStatusBarControl::createContextMenu() {
    menu = new QMenu(this);
    for (const BitcoinUnits::Unit u : BitcoinUnits::availableUnits()) {
        QAction *menuAction =
            new QAction(QString(BitcoinUnits::longName(u)), this);
        menuAction->setData(QVariant(u));
        menu->addAction(menuAction);
    }
    connect(menu, &QMenu::triggered, this,
            &UnitDisplayStatusBarControl::onMenuSelection);
}

void UnitDisplayStatusBarControl::setOptionsModel(OptionsModel *_optionsModel) {
    if (_optionsModel) {
        this->optionsModel = _optionsModel;

        // be aware of a display unit change reported by the OptionsModel
        // object.
        connect(_optionsModel, &OptionsModel::displayUnitChanged, this,
                &UnitDisplayStatusBarControl::updateDisplayUnit);

        // initialize the display units label with the current value in the
        // model.
        updateDisplayUnit(_optionsModel->getDisplayUnit());
    }
}

void UnitDisplayStatusBarControl::updateDisplayUnit(int newUnits) {
    setText(BitcoinUnits::longName(newUnits));
}

void UnitDisplayStatusBarControl::onDisplayUnitsClicked(const QPoint &point) {
    QPoint globalPos = mapToGlobal(point);
    menu->exec(globalPos);
}

void UnitDisplayStatusBarControl::onMenuSelection(QAction *action) {
    if (action) {
        optionsModel->setDisplayUnit(action->data());
    }
}