1 files changed, 136 insertions, 3 deletions

diff --git a/src/3rdparty/webkit/WebKit/qt/Api/qwebhistory.cpp b/src/3rdparty/webkit/WebKit/qt/Api/qwebhistory.cpp
index 07d027d..7cdc00e 100644
--- a/src/3rdparty/webkit/WebKit/qt/Api/qwebhistory.cpp
+++ b/src/3rdparty/webkit/WebKit/qt/Api/qwebhistory.cpp
@@ -28,6 +28,7 @@
 #include "PageGroup.h"
 
 #include <QSharedData>
+#include <QDebug>
 
 /*!
   \class QWebHistoryItem
@@ -213,6 +214,8 @@ bool QWebHistoryItem::isValid() const
   number of items is given by count(), and the history can be cleared with the
   clear() function.
 
+  QWebHistory's state can be saved with saveState() and loaded with restoreState().
+
   \sa QWebHistoryItem, QWebHistoryInterface, QWebPage
 */
 
@@ -405,9 +408,13 @@ int QWebHistory::currentItemIndex() const
 */
 QWebHistoryItem QWebHistory::itemAt(int i) const
 {
-    WebCore::HistoryItem *item = d->lst->itemAtIndex(i);
-
-    QWebHistoryItemPrivate *priv = new QWebHistoryItemPrivate(item);
+    QWebHistoryItemPrivate *priv;
+    if (i < 0 || i >= count())
+        priv = new QWebHistoryItemPrivate(0);
+    else {
+        WebCore::HistoryItem *item = d->lst->entries()[i].get();
+        priv = new QWebHistoryItemPrivate(item);
+    }
     return QWebHistoryItem(priv);
 }
 
@@ -441,3 +448,129 @@ void QWebHistory::setMaximumItemCount(int count)
     d->lst->setCapacity(count);
 }
 
+/*!
+   \enum QWebHistory::HistoryStateVersion
+
+   This enum describes the versions available for QWebHistory's saveState() function:
+
+   \value HistoryVersion_1 Version 1 (Qt 4.6)
+   \value DefaultHistoryVersion The current default version in 1.
+*/
+
+/*!
+  \since 4.6
+
+  Restores the state of QWebHistory from the given \a buffer. Returns true
+  if the history was successfully restored; otherwise returns false.
+
+  \sa saveState()
+*/
+bool QWebHistory::restoreState(const QByteArray& buffer)
+{
+    QDataStream stream(buffer);
+    int version;
+    bool result = false;
+    stream >> version;
+
+    switch (version) {
+    case HistoryVersion_1: {
+        int count;
+        int currentIndex;
+        stream >> count >> currentIndex;
+
+        clear();
+        // only if there are elements
+        if (count) {
+            // after clear() is new clear HistoryItem (at the end we had to remove it)
+            WebCore::HistoryItem *nullItem = d->lst->currentItem();
+            for (int i = 0;i < count;i++) {
+                WTF::PassRefPtr<WebCore::HistoryItem> item = WebCore::HistoryItem::create();
+                item->restoreState(stream, version);
+                d->lst->addItem(item);
+            }
+            d->lst->removeItem(nullItem);
+            goToItem(itemAt(currentIndex));
+            result = stream.status() == QDataStream::Ok;
+        }
+        break;
+    }
+    default: {} // result is false;
+    }
+
+    return result;
+};
+
+/*!
+  \since 4.6
+  Saves the state of this QWebHistory into a QByteArray.
+
+  Saves the current state of this QWebHistory. The version number, \a version, is
+  stored as part of the data.
+
+  To restore the saved state, pass the return value to restoreState().
+
+  \sa restoreState()
+*/
+QByteArray QWebHistory::saveState(HistoryStateVersion version) const
+{
+    QByteArray buffer;
+    QDataStream stream(&buffer, QIODevice::WriteOnly);
+    stream << version;
+
+    switch (version) {
+    case HistoryVersion_1: {
+        stream << count() << currentItemIndex();
+
+        const WebCore::HistoryItemVector &items = d->lst->entries();
+        for (int i = 0; i < items.size(); i++)
+            items[i].get()->saveState(stream, version);
+
+        if (stream.status() != QDataStream::Ok)
+            buffer = QByteArray();  // make buffer isNull()==true and isEmpty()==true
+        break;
+    }
+    default:
+        buffer.clear();
+
+    }
+
+    return buffer;
+}
+
+/*!
+  \since 4.6
+  \fn QDataStream& operator<<(QDataStream& stream, const QWebHistory& history)
+  \relates QWebHistory
+
+  Saves the given \a history into the specified \a stream. This is a convenience function
+  and is equivalent to calling the saveState() method.
+
+  \sa QWebHistory::saveState()
+*/
+
+QDataStream& operator<<(QDataStream& stream, const QWebHistory& history)
+{
+    return stream << history.saveState();
+}
+
+/*!
+  \fn QDataStream& operator>>(QDataStream& stream, QWebHistory& history)
+  \relates QWebHistory
+  \since 4.6
+
+  Loads a QWebHistory from the specified \a stream into the given \a history.
+  This is a convenience function and it is equivalent to calling the restoreState()
+  method.
+
+  \sa QWebHistory::restoreState()
+*/
+
+QDataStream& operator>>(QDataStream& stream, QWebHistory& history)
+{
+    QByteArray buffer;
+    stream >> buffer;
+    history.restoreState(buffer);
+    return stream;
+}
+
+