Qt 5.7 | Qt WebEngine | WebEngine Cookie Browser Example | mainwindow.cpp Example File

Qt 5.7.1 Reference Documentation

# mainwindow.cpp Example File

webenginewidgets/cookiebrowser/mainwindow.cpp

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      #include "mainwindow.h"
      #include <QWebEngineCookieStore>
      #include <QWebEngineProfile>

      CookieDialog::CookieDialog(const QNetworkCookie &cookie, QWidget *parent): QDialog(parent)
      {
          setupUi(this);
          m_nameLineEdit->setText(cookie.name());
          m_domainLineEdit->setText(cookie.domain());
          m_valueLineEdit->setText(cookie.value());
          m_pathLineEdit->setText(cookie.path());
          m_dateEdit->setDate(cookie.expirationDate().date());
          m_isSecureComboBox->addItem(cookie.isSecure() ? tr("yes") : tr("no"));
          m_isHttpOnlyComboBox->addItem(cookie.isHttpOnly() ? tr("yes") : tr("no"));
          m_addButton->setVisible(false);
          m_cancelButton->setText(tr("Close"));
      }

      CookieDialog::CookieDialog(QWidget *parent): QDialog(parent)
      {
          setupUi(this);
          m_nameLineEdit->setReadOnly(false);
          m_domainLineEdit->setReadOnly(false);
          m_valueLineEdit->setReadOnly(false);
          m_pathLineEdit->setReadOnly(false);
          m_dateEdit->setReadOnly(false);
          m_dateEdit->setDate(QDateTime::currentDateTime().addYears(1).date());
          m_isSecureComboBox->addItem(tr("no"));
          m_isSecureComboBox->addItem(tr("yes"));
          m_isHttpOnlyComboBox->addItem(tr("no"));
          m_isHttpOnlyComboBox->addItem(tr("yes"));
      }

      QNetworkCookie CookieDialog::cookie()
      {
          QNetworkCookie cookie;
          cookie.setDomain(m_domainLineEdit->text());
          cookie.setName(m_nameLineEdit->text().toLatin1());
          cookie.setValue(m_valueLineEdit->text().toLatin1());
          cookie.setExpirationDate(QDateTime(m_dateEdit->date()));
          cookie.setPath(m_pathLineEdit->text());
          cookie.setSecure(m_isSecureComboBox->currentText() == tr("yes"));
          cookie.setHttpOnly(m_isHttpOnlyComboBox->currentText() == tr("yes"));
          return cookie;
      }

      CookieWidget::CookieWidget(const QNetworkCookie &cookie, QWidget *parent): QWidget(parent)
      {
          setupUi(this);
          setAutoFillBackground(true);
          m_nameLabel->setText(cookie.name());
          m_domainLabel->setText(cookie.domain());
          connect(m_viewButton, &QPushButton::clicked, this, &CookieWidget::viewClicked);
          connect(m_deleteButton, &QPushButton::clicked, this, &CookieWidget::deleteClicked);
      }

      void CookieWidget::setHighlighted(bool enabled)
      {
          QPalette p = palette();
          p.setColor(backgroundRole(), enabled ? QColor(0xF0, 0xF8, 0xFF) : Qt::white);
          setPalette(p);
      }

      MainWindow::MainWindow(const QUrl &url) :
          QMainWindow(),
          m_store(nullptr),
          m_layout(new QVBoxLayout)
      {
          setupUi(this);
          m_urlLineEdit->setText(url.toString());

          m_layout->addItem(new QSpacerItem(0,0, QSizePolicy::Minimum, QSizePolicy::Expanding));
          m_layout->setContentsMargins(0, 0, 0, 0);
          m_layout->setSpacing(0);

          QWidget *w = new QWidget();
          QPalette p = w->palette();
          p.setColor(widget->backgroundRole(), Qt::white);
          w->setPalette(p);
          w->setLayout(m_layout);

          m_scrollArea->setWidget(w);
          m_scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
          m_scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);

          connect(m_urlButton, &QPushButton::clicked, this, &MainWindow::handleUrlClicked);
          connect(m_deleteAllButton, &QPushButton::clicked, this, &MainWindow::handleDeleteAllClicked);
          connect(m_newButton, &QPushButton::clicked, this, &MainWindow::handleNewClicked);

          m_store = m_webview->page()->profile()->cookieStore();
          connect(m_store, &QWebEngineCookieStore::cookieAdded, this, &MainWindow::handleCookieAdded);
          m_store->loadAllCookies();
          m_webview->load(url);
      }

      bool MainWindow::containsCookie(const QNetworkCookie &cookie)
      {
          for (auto c: m_cookies) {
              if (c.hasSameIdentifier(cookie))
                  return true;
          }
          return false;
      }

      void MainWindow::handleCookieAdded(const QNetworkCookie &cookie)
      {
          // only new cookies
          if (containsCookie(cookie))
              return;

          CookieWidget *widget = new CookieWidget(cookie);
          widget->setHighlighted(m_cookies.count() % 2);
          m_cookies.append(cookie);
          m_layout->insertWidget(0,widget);

          connect(widget, &CookieWidget::deleteClicked, [this, cookie, widget]() {
              m_store->deleteCookie(cookie);
              delete widget;
              m_cookies.removeOne(cookie);
              for (int i = 0; i < m_layout->count() - 1; i++) {
                  // fix background colors
                  auto widget = qobject_cast<CookieWidget*>(m_layout->itemAt(i)->widget());
                  widget->setHighlighted(i % 2);
              }
          });

          connect(widget, &CookieWidget::viewClicked, [cookie]() {
              CookieDialog dialog(cookie);
              dialog.exec();
          });
      }

      void MainWindow::handleDeleteAllClicked()
      {
          m_store->deleteAllCookies();
          for (int i = m_layout->count() - 1; i >= 0; i--)
              delete m_layout->itemAt(i)->widget();
          m_cookies.clear();
      }

      void MainWindow::handleNewClicked()
      {
          CookieDialog dialog;
          if (dialog.exec() == QDialog::Accepted)
              m_store->setCookie(dialog.cookie());
      }

      void MainWindow::handleUrlClicked()
      {
          m_webview->load(QUrl(m_urlLineEdit->text()));
      }