/*
    Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#ifndef QWEBHISTORY_H
#define QWEBHISTORY_H

#include <QtCore/qurl.h>
#include <QtCore/qstring.h>
#include <QtGui/qicon.h>
#include <QtCore/qdatetime.h>
#include <QtCore/qshareddata.h>

#include "qwebkitglobal.h"

class QWebPage;

namespace WebCore {
    class FrameLoaderClientQt;
}

class QWebHistoryItemPrivate;
class QWEBKIT_EXPORT QWebHistoryItem
{
public:
    QWebHistoryItem(const QWebHistoryItem &other);
    QWebHistoryItem &operator=(const QWebHistoryItem &other);
    ~QWebHistoryItem();

    //bool restoreState(QByteArray& buffer);
    //QByteArray saveState(QWebHistory::HistoryStateVersion version = DefaultHistoryVersion) const;

    QUrl originalUrl() const;
    QUrl url() const;

    QString title() const;
    QDateTime lastVisited() const;

    QIcon icon() const;

    QVariant userData() const;
    void setUserData(const QVariant& userData);

    bool isValid() const;

private:
    QWebHistoryItem(QWebHistoryItemPrivate *priv);
    friend class QWebHistory;
    friend class QWebPage;
    friend class WebCore::FrameLoaderClientQt;
    friend class QWebHistoryItemPrivate;
    //friend QDataStream & operator<<(QDataStream& out,const QWebHistoryItem& hist);
    //friend QDataStream & operator>>(QDataStream& in,QWebHistoryItem& hist);
    QExplicitlySharedDataPointer<QWebHistoryItemPrivate> d;
};

//QWEBKIT_EXPORT QDataStream & operator<<(QDataStream& out,const QWebHistoryItem& hist);
//QWEBKIT_EXPORT QDataStream & operator>>(QDataStream& in,QWebHistoryItem& hist);


class QWebHistoryPrivate;
class QWEBKIT_EXPORT QWebHistory
{
public:
    enum HistoryStateVersion {
        HistoryVersion_1,
        /*, HistoryVersion_2, */
        DefaultHistoryVersion = HistoryVersion_1
    };
    
    bool restoreState(const QByteArray& buffer);
    QByteArray saveState(HistoryStateVersion version = DefaultHistoryVersion) const;
    
    void clear();

    QList<QWebHistoryItem> items() const;
    QList<QWebHistoryItem> backItems(int maxItems) const;
    QList<QWebHistoryItem> forwardItems(int maxItems) const;

    bool canGoBack() const;
    bool canGoForward() const;

    void back();
    void forward();
    void goToItem(const QWebHistoryItem &item);

    QWebHistoryItem backItem() const;
    QWebHistoryItem currentItem() const;
    QWebHistoryItem forwardItem() const;
    QWebHistoryItem itemAt(int i) const;

    int currentItemIndex() const;

    int count() const;

    int maximumItemCount() const;
    void setMaximumItemCount(int count);

private:
    QWebHistory();
    ~QWebHistory();

    friend class QWebPage;
    friend class QWebPagePrivate;
    friend QWEBKIT_EXPORT QDataStream& operator>>(QDataStream&, QWebHistory&);
    friend QWEBKIT_EXPORT QDataStream& operator<<(QDataStream&, const QWebHistory&);

    Q_DISABLE_COPY(QWebHistory)

    QWebHistoryPrivate *d;
};

QWEBKIT_EXPORT QDataStream& operator<<(QDataStream& stream, const QWebHistory& history);
QWEBKIT_EXPORT QDataStream& operator>>(QDataStream& stream, QWebHistory& history);

#endif