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// SPDX-FileCopyrightText: 2021 Daniel Vrátil <dvratil@kde.org>
//
// SPDX-License-Identifier: MIT
#include "qcoro/network/qcoronetworkreply.h"
#include "qcoro/qcorotask.h"
#include <QApplication>
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-enum-enum-conversion" // QSizePolicy seems problematic...
#endif // __clang__
#include <QBoxLayout>
#ifdef __clang__
#pragma clang diagnostic pop
#endif // __clang__
#include <QMainWindow>
#include <QMessageBox>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QProgressBar>
#include <QPushButton>
#include <memory>
// Programming langauges
static const QUrl wikiUrl =
QUrl{QStringLiteral("https://www.wikidata.org/wiki/Special:EntityData/Q9143.json")};
class MainWindow : public QMainWindow {
Q_OBJECT
public:
MainWindow() {
mPb = new QProgressBar();
mPb->setVisible(false);
mPb->setMinimumWidth(200);
mPb->setMinimum(0);
mPb->setMaximum(0);
mBtn = new QPushButton(tr("Start Download"));
connect(mBtn, &QPushButton::clicked, this, &MainWindow::start);
auto *vbox = new QVBoxLayout();
vbox->addStretch(1);
vbox->addWidget(mPb);
vbox->addWidget(mBtn);
vbox->addStretch(1);
auto *hbox = new QHBoxLayout();
hbox->addStretch(1);
hbox->addLayout(vbox);
hbox->addStretch(1);
QWidget *w = new QWidget;
w->setLayout(hbox);
setCentralWidget(w);
}
private Q_SLOTS:
QCoro::Task<> start() {
mPb->setVisible(true);
mBtn->setEnabled(false);
mBtn->setText(tr("Downloading ..."));
std::unique_ptr<QNetworkReply> reply(co_await mNam.get(QNetworkRequest{wikiUrl}));
if (reply->error()) {
QMessageBox::warning(
this, tr("Network request error"),
tr("Error occured during network request. Error code: %1").arg(reply->error()));
co_return;
}
mPb->setVisible(false);
mBtn->setEnabled(true);
mBtn->setText(tr("Done, download again"));
}
private:
QNetworkAccessManager mNam;
QPushButton *mBtn = {};
QProgressBar *mPb = {};
};
int main(int argc, char **argv) {
QApplication app(argc, argv);
MainWindow window;
window.showNormal();
return app.exec();
}
#include "main.moc"
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