webview.h Example File

  /****************************************************************************
  **
  ** Copyright (C) 2015 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
  **
  ** This file is part of the demonstration applications of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL21$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see http://www.qt.io/terms-conditions. For further
  ** information use the contact form at http://www.qt.io/contact-us.
  **
  ** GNU Lesser General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU Lesser
  ** General Public License version 2.1 or version 3 as published by the Free
  ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
  ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
  ** following information to ensure the GNU Lesser General Public License
  ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
  ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  **
  ** As a special exception, The Qt Company gives you certain additional
  ** rights. These rights are described in The Qt Company LGPL Exception
  ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/

  #ifndef WEBVIEW_H
  #define WEBVIEW_H

  #include <QWebView>

  class QAuthenticator;
  class QMouseEvent;
  class QNetworkProxy;
  class QNetworkReply;
  class QSslError;

  class BrowserMainWindow;
  class WebPage : public QWebPage {
      Q_OBJECT

  signals:
      void loadingUrl(const QUrl &url);

  public:
      WebPage(QObject *parent = 0);
      BrowserMainWindow *mainWindow();

  protected:
      bool acceptNavigationRequest(QWebFrame *frame, const QNetworkRequest &request, NavigationType type);
      QWebPage *createWindow(QWebPage::WebWindowType type);
  #if !defined(QT_NO_UITOOLS)
      QObject *createPlugin(const QString &classId, const QUrl &url, const QStringList &paramNames, const QStringList &paramValues);
  #endif

  private slots:
      void handleUnsupportedContent(QNetworkReply *reply);

  private:
      friend class WebView;

      // set the webview mousepressedevent
      Qt::KeyboardModifiers m_keyboardModifiers;
      Qt::MouseButtons m_pressedButtons;
      bool m_openInNewTab;
      QUrl m_loadingUrl;
  };

  class WebView : public QWebView {
      Q_OBJECT

  public:
      WebView(QWidget *parent = 0);
      WebPage *webPage() const { return m_page; }

      void loadUrl(const QUrl &url);
      QUrl url() const;

      QString lastStatusBarText() const;
      inline int progress() const { return m_progress; }

  protected:
      void mousePressEvent(QMouseEvent *event);
      void mouseReleaseEvent(QMouseEvent *event);
      void contextMenuEvent(QContextMenuEvent *event);
      void wheelEvent(QWheelEvent *event);

  private slots:
      void setProgress(int progress);
      void loadFinished();
      void setStatusBarText(const QString &string);
      void downloadRequested(const QNetworkRequest &request);
      void openLinkInNewTab();

  private:
      QString m_statusBarText;
      QUrl m_initialUrl;
      int m_progress;
      WebPage *m_page;
  };

  #endif