/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#ifndef __GINEBRA_GWEBPAGE_H__

#define __GINEBRA_GWEBPAGE_H__

#include <QDebug>

#include <QWebPage>

#include <QWebFrame>

#include "ChromeWidget.h"

namespace GVA {

  // ------------------------------

  // Simple wrapper class for QWebPage to allow interception of javascript errors.

  class WebPageWrapper : public QWebPage {

    public:

      WebPageWrapper(QObject *parent, const QString &prefix)

        : QWebPage(parent),

          m_prefix(prefix) {

        qDebug() << "WebPageWrapper::WebPageWrapper";

      }

      // Called when javascript errors are hit in the chrome page.

      virtual void javaScriptConsoleMessage(const QString & message, int lineNumber, const QString & sourceID) {

        qDebug() << m_prefix << ":";

        qDebug() << (const char*)QString("===\t%2:%3 %4")

              .arg(sourceID)

              .arg(lineNumber)

              .arg(message).toAscii();

      }

      QString m_prefix;

  };

  // ------------------------------

  class GWebPage : public QObject {

      Q_OBJECT

    public:

      GWebPage(QWebPage *page) {

        m_page = page;

      }

      Q_PROPERTY(QString name READ objectName)  // JS API

      Q_PROPERTY(QString title READ getTitle)  // JS API

      QString getTitle() {

        return m_page->mainFrame()->title();

      }

      QWebPage *page() { return m_page; }

      operator QWebPage *() { return m_page; }

      void dump() {

        qDebug() << "GWebPage::dump: " << this;

        qDebug() << "   page=" << (m_page ? m_page : 0);

      }

    protected:

      QWebPage *m_page;

  };

  // ------------------------------

  /*! \ingroup JavascriptAPI

   * \brief A content view that has full access to the Javascript APIs.

   *

   * Example code to load an HTML file into a super page:

   * \code

   * window.views.WebView.createSuperPage("BookmarkView", true);

   * window.views.WebView.BookmarkView.load("./chrome/BookmarkView.html");

   * \endcode

   */

  class GSuperWebPage : public GWebPage {

      Q_OBJECT

    public:

      GSuperWebPage(WebPageWrapper *page, ChromeWidget *chromeWidget)

        : GWebPage(page),

          m_chromeWidget(chromeWidget)

      {

        if(!m_page) {

          m_page = new WebPageWrapper(this, "Superpage javascript error");

        }

        qDebug() << "GSuperWebPage::GSuperWebPage: page=" << GWebPage::page();

        connect(GWebPage::page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()), this, SLOT(onJavaScriptWindowObjectCleared()));

      }

    public slots:

      void load(const QString &url) {   // JS API

        qDebug() << "GSuperWebPage::load: " << url;

        page()->mainFrame()->load(url);

      }

    private slots:

      void onJavaScriptWindowObjectCleared() {

        qDebug() << "GSuperWebPage::onJavaScriptWindowObjectCleared: " << objectName();

        if(m_chromeWidget)

          m_chromeWidget->exportJSObjectsToPage(m_page);

      }

    private:

      ChromeWidget *m_chromeWidget;  // not owned

  };

}

#endif // __GINEBRA_GWEBPAGE_H__