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/*
* Copyright (C) 2006, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (C) 2009 Google, Inc. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 COMPUTER, INC. OR
* 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 BackForwardList_h
#define BackForwardList_h
#include <wtf/Forward.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class HistoryItem;
// FIXME: Rename this class to BackForwardClient, and rename the
// getter in Page accordingly.
class BackForwardList : public RefCounted<BackForwardList> {
public:
virtual ~BackForwardList()
{
}
virtual void addItem(PassRefPtr<HistoryItem>) = 0;
virtual void goToItem(HistoryItem*) = 0;
virtual HistoryItem* itemAtIndex(int) = 0;
virtual int backListCount() = 0;
virtual int forwardListCount() = 0;
virtual bool isActive() = 0;
virtual void close() = 0;
#if ENABLE(WML)
// FIXME: Rename this to just "clear" and change it so it's not
// WML-specific. This is the same operation as clearBackForwardList
// in the layout test controller; it would be reasonable to have it
// here even though HTML DOM interfaces don't require it.
virtual void clearWMLPageHistory() = 0;
#endif
// FIXME: Delete these once all callers are using BackForwardController
// instead of calling this directly.
HistoryItem* backItem() { return itemAtIndex(-1); }
HistoryItem* currentItem() { return itemAtIndex(0); }
HistoryItem* forwardItem() { return itemAtIndex(1); }
};
} // namespace WebCore
#endif // BackForwardList_h
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