qgswebpage.h

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/***************************************************************************
 
               ----------------------------------------------------
              date                 : 19.5.2015
              copyright            : (C) 2015 by Matthias Kuhn
              email                : matthias (at) opengis.ch
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSWEBPAGE_H
#define QGSWEBPAGE_H
 
 
#include "qgis_core.h"
#include "qgsmessagelog.h"
#include "qgswebframe.h"
 
#include <QMenu>
#include <QNetworkAccessManager>
#include <QObject>
#include <QPalette>
#include <QTextBrowser>
 
#define SIP_NO_FILE

class CORE_EXPORT QWebSettings : public QObject
{
    Q_OBJECT
 
  public:
    enum WebAttribute
    {
      AutoLoadImages,
      JavascriptEnabled,
      JavaEnabled,
      PluginsEnabled,
      PrivateBrowsingEnabled,
      JavascriptCanOpenWindows,
      JavascriptCanAccessClipboard,
      DeveloperExtrasEnabled,
      LinksIncludedInFocusChain,
      ZoomTextOnly,
      PrintElementBackgrounds,
      OfflineStorageDatabaseEnabled,
      OfflineWebApplicationCacheEnabled,
      LocalStorageEnabled,
      LocalContentCanAccessRemoteUrls,
      DnsPrefetchEnabled,
      XSSAuditingEnabled,
      AcceleratedCompositingEnabled,
      SpatialNavigationEnabled,
      LocalContentCanAccessFileUrls,
      TiledBackingStoreEnabled,
      FrameFlatteningEnabled,
      SiteSpecificQuirksEnabled,
      JavascriptCanCloseWindows,
      WebGLEnabled,
      CSSRegionsEnabled,
      HyperlinkAuditingEnabled,
      CSSGridLayoutEnabled,
      ScrollAnimatorEnabled,
      CaretBrowsingEnabled,
      NotificationsEnabled
    };
    explicit QWebSettings( QObject *parent = nullptr )
      : QObject( parent )
    {}
 
    void setUserStyleSheetUrl( const QUrl & ) {}
 
    void setAttribute( WebAttribute, bool ) {}
};

class CORE_EXPORT QWebPage : public QObject
{
    Q_OBJECT
 
  public:
    enum LinkDelegationPolicy
    {
      DontDelegateLinks,
      DelegateExternalLinks,
      DelegateAllLinks
    };
 
    enum WebWindowType
    {
      WebBrowserWindow,
      WebModalDialog
    };
 
    explicit QWebPage( QObject *parent = nullptr )
      : QObject( parent )
      , mSettings( std::make_unique<QWebSettings>() )
      , mFrame( std::make_unique<QWebFrame>() )
    {
      connect( mFrame.get(), &QWebFrame::loadFinished, this, &QWebPage::loadFinished );
    }
 
    ~QWebPage() override {}
 
    QPalette palette() const { return QPalette(); }
 
    void setPalette( const QPalette &palette ) { Q_UNUSED( palette ) }
 
    void setViewportSize( const QSize &size ) const { Q_UNUSED( size ) }
 
    void setLinkDelegationPolicy( LinkDelegationPolicy linkDelegationPolicy )
    {
      if ( !parent() )
        return;
 
      QTextBrowser *tb = qobject_cast<QTextBrowser *>( parent() );
      if ( !tb )
        return;
 
      tb->setOpenExternalLinks( linkDelegationPolicy != DontDelegateLinks );
    }
 
    void setNetworkAccessManager( QNetworkAccessManager *networkAccessManager ) { Q_UNUSED( networkAccessManager ) }
 
    QWebFrame *mainFrame() const { return mFrame.get(); }
 
    QWebSettings *settings() const { return mSettings.get(); }
 
    QSize viewportSize() const { return QSize(); }
 
    QMenu *createStandardContextMenu() { return new QMenu(); }
 
  signals:
 
    void loadFinished( bool ok );
 
    void downloadRequested( const QNetworkRequest &request );
 
    void unsupportedContent( QNetworkReply *reply );
 
  public slots:
 
  protected:
    virtual void javaScriptConsoleMessage( const QString &, int, const QString & ) {}
 
  private:
    std::unique_ptr<QWebSettings> mSettings;
    std::unique_ptr<QWebFrame> mFrame;
};

class CORE_EXPORT QgsWebPage : public QWebPage
{
    Q_OBJECT
 
  public:
    explicit QgsWebPage( QObject *parent = nullptr )
      : QWebPage( parent )
    {}

    void setIdentifier( const QString &identifier ) { mIdentifier = identifier; }

    QString identifier() const { return mIdentifier; }
 
  protected:
    void javaScriptConsoleMessage( const QString &message, int lineNumber, const QString & ) override
    {
      if ( mIdentifier.isEmpty() )
        QgsMessageLog::logMessage( tr( "Line %1: %2" ).arg( lineNumber ).arg( message ), tr( "JavaScript" ) );
      else
        QgsMessageLog::logMessage( tr( "%1 (line %2): %3" ).arg( mIdentifier ).arg( lineNumber ).arg( message ), tr( "JavaScript" ) );
    }
 
  private:
    QString mIdentifier;
};
 
#endif // QGSWEBPAGE_H