Intercept QML Webview request

valeryz

I was hoping someone could help me with this. I would like to intercept a url that is set in QML webview to inject particular headers. I am subclassing QQmlNetworkAccessManagerFactory. (I use Qt5.7) but it does not seem to work. I never get inside createRequest method.
Here's my code:

networkaccessmanager.cpp:
#include "networkaccessmanager.h"

NetworkAccessManager::NetworkAccessManager(QObject *parent) :
QNetworkAccessManager(parent)
{
}

QNetworkReply* NetworkAccessManager::get(const QNetworkRequest &request) {
qDebug() << "Url path: " << request.url().path();
return NetworkAccessManager::get(request);
}

QNetworkReply* NetworkAccessManager::createRequest(Operation op, const QNetworkRequest &req, QIODevice outgoingData) {
qDebug() << "Create request"; <------ never get here
QNetworkReply reply = QNetworkAccessManager::createRequest(op, req, outgoingData);
return reply;
}

NetworkAccessManagerFactory::NetworkAccessManagerFactory(QObject *parent) :
QObject(parent)
{
}

QNetworkAccessManager *NetworkAccessManagerFactory::create(QObject *parent)
{
NetworkAccessManager *nam = new NetworkAccessManager(parent);
return nam;
}

networkaccessmanager.h:
#ifndef NETWORKACCESSMANAGER_H
#define NETWORKACCESSMANAGER_H

#include <QQmlNetworkAccessManagerFactory>
#include <QNetworkReply>
#include <QNetworkRequest>

class NetworkAccessManager : public QNetworkAccessManager
{
Q_OBJECT
public:
NetworkAccessManager(QObject parent = 0);
QNetworkReply get(const QNetworkRequest &request);
protected:
virtual QNetworkReply* createRequest(Operation op, const QNetworkRequest &req, QIODevice *outgoingData = Q_NULLPTR);
};

class NetworkAccessManagerFactory : public QObject, public QQmlNetworkAccessManagerFactory
{
Q_OBJECT
public:
explicit NetworkAccessManagerFactory(QObject parent = 0);
virtual QNetworkAccessManager create(QObject parent);
private:
QNetworkAccessManager m_networkManager;
};
#endif // NETWORKACCESSMANAGER_H

main.cpp:
#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQmlComponent>
#include <QtWebView>

#include "networkaccessmanager.h"

int main(int argc, char *argv[])
{
QGuiApplication a(argc, argv);

QtWebView::initialize();

QQmlApplicationEngine engine;
engine.setNetworkAccessManagerFactory(new NetworkAccessManagerFactory);

QQmlComponent component(&engine, QUrl("qrc:/webView.qml"));
if (component.status() != component.Ready) {
    qWarning() << "Error:"+ component.errorString();
}

QObject* object = component.create();
if (object == 0) {
    qWarning() << "Qml component was not created";
}

return a.exec();

}

webView.qml:
import QtQuick 2.2
import QtQuick.Controls 2.0
import QtWebView 1.1
import QtQuick.Layouts 1.1
import QtQuick.Controls.Styles 1.2

ApplicationWindow {
flags: Qt.FramelessWindowHint
visible: true
width: 500
height: 500
WebView {
id: webView
anchors.fill: parent
objectName: "webView"
url: "https://google.ca"
}
}