Method getOrCreateWallet

src/qt/walletcontroller.cpp:117–175

}

WalletModel* WalletController::getOrCreateWallet(std::unique_ptr<interfaces::Wallet> wallet)
{
    QMutexLocker locker(&m_mutex);

    // Return model instance if exists.
    if (!m_wallets.empty()) {
        std::string name = wallet->getWalletName();
        for (WalletModel* wallet_model : m_wallets) {
            if (wallet_model->wallet().getWalletName() == name) {
                return wallet_model;
            }
        }
    }

    // Instantiate model and register it.
    WalletModel* wallet_model = new WalletModel(std::move(wallet), m_client_model, m_platform_style,
                                                nullptr /* required for the following moveToThread() call */);

    // Move WalletModel object to the thread that created the WalletController
    // object (GUI main thread), instead of the current thread, which could be
    // an outside wallet thread or RPC thread sending a LoadWallet notification.
    // This ensures queued signals sent to the WalletModel object will be
    // handled on the GUI event loop.
    wallet_model->moveToThread(thread());
    // setParent(parent) must be called in the thread which created the parent object. More details in #18948.
    QMetaObject::invokeMethod(this, [wallet_model, this] {
        wallet_model->setParent(this);
    }, GUIUtil::blockingGUIThreadConnection());

    m_wallets.push_back(wallet_model);

    // WalletModel::startPollBalance needs to be called in a thread managed by
    // Qt because of startTimer. Considering the current thread can be a RPC
    // thread, better delegate the calling to Qt with Qt::AutoConnection.
    const bool called = QMetaObject::invokeMethod(wallet_model, "startPollBalance");
    assert(called);

    connect(wallet_model, &WalletModel::unload, this, [this, wallet_model] {
        // Defer removeAndDeleteWallet when no modal widget is actively waiting for an action.
        // TODO: remove this workaround by removing usage of QDialog::exec.
        QWidget* active_dialog = QApplication::activeModalWidget();
        if (active_dialog && dynamic_cast<QProgressDialog*>(active_dialog) == nullptr) {
            connect(qApp, &QApplication::focusWindowChanged, wallet_model, [this, wallet_model]() {
                if (!QApplication::activeModalWidget()) {
                    removeAndDeleteWallet(wallet_model);
                }
            }, Qt::QueuedConnection);
        } else {
            removeAndDeleteWallet(wallet_model);
        }
    }, Qt::QueuedConnection);

    // Re-emit coinsSent signal from wallet model.
    connect(wallet_model, &WalletModel::coinsSent, this, &WalletController::coinsSent);

    Q_EMIT walletAdded(wallet_model);

    return wallet_model;