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/*
* Copyright (C) 2007 Apple 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 History_h
#define History_h
#include "DOMWindowProperty.h"
#include "KURL.h"
#include "ScriptWrappable.h"
#include "SerializedScriptValue.h"
#include <wtf/Forward.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class Frame;
class ScriptExecutionContext;
typedef int ExceptionCode;
class History : public ScriptWrappable, public RefCounted<History>, public DOMWindowProperty {
public:
static PassRefPtr<History> create(Frame* frame) { return adoptRef(new History(frame)); }
unsigned length() const;
PassRefPtr<SerializedScriptValue> state();
void back();
void forward();
void go(int distance);
void back(ScriptExecutionContext*);
void forward(ScriptExecutionContext*);
void go(ScriptExecutionContext*, int distance);
bool stateChanged() const;
bool isSameAsCurrentState(SerializedScriptValue*) const;
enum StateObjectType {
StateObjectPush,
StateObjectReplace
};
void stateObjectAdded(PassRefPtr<SerializedScriptValue>, const String& title, const String& url, StateObjectType, ExceptionCode&);
private:
explicit History(Frame*);
KURL urlForState(const String& url);
PassRefPtr<SerializedScriptValue> stateInternal() const;
RefPtr<SerializedScriptValue> m_lastStateObjectRequested;
};
} // namespace WebCore
#endif // History_h
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