2 * Copyright (C) 2007 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include "DOMWindowProperty.h"
31 #include <wtf/Forward.h>
32 #include <wtf/PassRefPtr.h>
33 #include <wtf/RefCounted.h>
38 class ScriptExecutionContext;
39 class SerializedScriptValue;
40 typedef int ExceptionCode;
42 class History : public RefCounted<History>, public DOMWindowProperty {
44 static PassRefPtr<History> create(Frame* frame) { return adoptRef(new History(frame)); }
46 unsigned length() const;
47 SerializedScriptValue* state();
50 void go(int distance);
52 void back(ScriptExecutionContext*);
53 void forward(ScriptExecutionContext*);
54 void go(ScriptExecutionContext*, int distance);
56 bool stateChanged() const;
57 bool isSameAsCurrentState(SerializedScriptValue*) const;
59 enum StateObjectType {
63 void stateObjectAdded(PassRefPtr<SerializedScriptValue>, const String& title, const String& url, StateObjectType, ExceptionCode&);
66 explicit History(Frame*);
68 KURL urlForState(const String& url);
70 SerializedScriptValue* stateInternal() const;
72 SerializedScriptValue* m_lastStateObjectRequested;
75 } // namespace WebCore