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/*
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef HistoryController_h
#define HistoryController_h
#include "FrameLoaderTypes.h"
#include "PlatformString.h"
#include <wtf/Noncopyable.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class Frame;
class HistoryItem;
class SerializedScriptValue;
class HistoryController : public Noncopyable {
public:
enum HistoryUpdateType { UpdateAll, UpdateAllExceptBackForwardList };
HistoryController(Frame*);
~HistoryController();
void saveScrollPositionAndViewStateToItem(HistoryItem*);
void restoreScrollPositionAndViewState();
void updateBackForwardListForFragmentScroll();
void saveDocumentState();
void saveDocumentAndScrollState();
void restoreDocumentState();
void invalidateCurrentItemCachedPage();
void goToItem(HistoryItem*, FrameLoadType);
void updateForBackForwardNavigation();
void updateForReload();
void updateForStandardLoad(HistoryUpdateType updateType = UpdateAll);
void updateForRedirectWithLockedBackForwardList();
void updateForClientRedirect();
void updateForCommit();
void updateForSameDocumentNavigation();
void updateForFrameLoadCompleted();
HistoryItem* currentItem() const { return m_currentItem.get(); }
void setCurrentItem(HistoryItem*);
void setCurrentItemTitle(const String&);
bool currentItemShouldBeReplaced() const;
HistoryItem* previousItem() const { return m_previousItem.get(); }
HistoryItem* provisionalItem() const { return m_provisionalItem.get(); }
void setProvisionalItem(HistoryItem*);
void pushState(PassRefPtr<SerializedScriptValue>, const String& title, const String& url);
void replaceState(PassRefPtr<SerializedScriptValue>, const String& title, const String& url);
private:
PassRefPtr<HistoryItem> createItem(bool useOriginal);
PassRefPtr<HistoryItem> createItemTree(Frame* targetFrame, bool clipAtTarget);
void recursiveGoToItem(HistoryItem*, HistoryItem*, FrameLoadType);
bool currentFramesMatchItem(HistoryItem*) const;
void updateBackForwardListClippedAtTarget(bool doClip);
Frame* m_frame;
RefPtr<HistoryItem> m_currentItem;
RefPtr<HistoryItem> m_previousItem;
RefPtr<HistoryItem> m_provisionalItem;
};
} // namespace WebCore
#endif // HistoryController_h
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