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/*
Copyright (C) 2007 Trolltech ASA
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
This class provides all functionality needed for loading images, style sheets and html
pages from the web. It has a memory cache for these objects.
*/
#ifndef QWEBPAGEHISTORY_H
#define QWEBPAGEHISTORY_H
#include <QUrl>
#include <QString>
#include <QIcon>
#include <QDateTime>
#include <QSharedData>
#include <qwebkitglobal.h>
#if QT_VERSION < 0x040300
template <class T> class QExplicitlySharedDataPointer
{
public:
typedef T Type;
inline T &operator*() { return *d; }
inline const T &operator*() const { return *d; }
inline T *operator->() { return d; }
inline const T *operator->() const { return d; }
inline operator T *() { return d; }
inline operator const T *() const { return d; }
inline T *data() { return d; }
inline const T *data() const { return d; }
inline const T *constData() const { return d; }
//inline operator bool () const { return d != 0; }
inline bool operator==(const QExplicitlySharedDataPointer<T> &other) const { return d == other.d; }
inline bool operator!=(const QExplicitlySharedDataPointer<T> &other) const { return d != other.d; }
inline bool operator==(const T *ptr) const { return d == ptr; }
inline bool operator!=(const T *ptr) const { return d != ptr; }
inline QExplicitlySharedDataPointer() { d = 0; }
inline ~QExplicitlySharedDataPointer() { if (d && !d->ref.deref()) delete d; }
explicit QExplicitlySharedDataPointer(T *data);
inline QExplicitlySharedDataPointer(const QExplicitlySharedDataPointer<T> &o) : d(o.d) { if (d) d->ref.ref(); }
inline QExplicitlySharedDataPointer<T> & operator=(const QExplicitlySharedDataPointer<T> &o) {
if (o.d != d) {
T *x = o.d;
if (x) x->ref.ref();
x = qAtomicSetPtr(&d, x);
if (x && !x->ref.deref())
delete x;
}
return *this;
}
inline QExplicitlySharedDataPointer &operator=(T *o) {
if (o != d) {
T *x = o;
if (x) x->ref.ref();
x = qAtomicSetPtr(&d, x);
if (x && !x->ref.deref())
delete x;
}
return *this;
}
inline bool operator!() const { return !d; }
private:
T *d;
};
template <class T>
Q_INLINE_TEMPLATE QExplicitlySharedDataPointer<T>::QExplicitlySharedDataPointer(T *adata) : d(adata)
{ if (d) d->ref.ref(); }
#endif
class QWebPage;
class QWebHistoryItemPrivate;
class QWEBKIT_EXPORT QWebHistoryItem
{
public:
QWebHistoryItem(const QWebHistoryItem &other);
QWebHistoryItem &operator=(const QWebHistoryItem &other);
~QWebHistoryItem();
QList<QWebHistoryItem*> children() const;
QUrl originalUrl() const;
QUrl currentUrl() const;
QString title() const;
QDateTime lastVisited() const;
QPixmap icon() const;
QWebHistoryItem(QWebHistoryItemPrivate *priv);
private:
friend class QWebPageHistory;
friend class QWebPage;
QExplicitlySharedDataPointer<QWebHistoryItemPrivate> d;
};
class QWebPageHistoryPrivate;
class QWEBKIT_EXPORT QWebPageHistory
{
public:
QWebPageHistory(const QWebPageHistory &other);
~QWebPageHistory();
QList<QWebHistoryItem> items() const;
QList<QWebHistoryItem> backItems(int maxItems) const;
QList<QWebHistoryItem> forwardItems(int maxItems) const;
bool canGoBack() const;
bool canGoForward() const;
void goBack();
void goForward();
void goToItem(QWebHistoryItem *item);
QWebHistoryItem backItem() const;
QWebHistoryItem currentItem() const;
QWebHistoryItem forwardItem() const;
QWebHistoryItem itemAtIndex(int i) const;
QWebPageHistory(QWebPageHistoryPrivate *priv);
private:
QExplicitlySharedDataPointer<QWebPageHistoryPrivate> d;
};
#endif