2 * Copyright (C) 2010 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.
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15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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26 #ifndef BackForwardController_h
27 #define BackForwardController_h
29 #include <wtf/Noncopyable.h>
30 #include <wtf/Forward.h>
31 #include <wtf/RefPtr.h>
35 class BackForwardList;
39 class BackForwardController {
40 WTF_MAKE_NONCOPYABLE(BackForwardController); WTF_MAKE_FAST_ALLOCATED;
42 BackForwardController(Page*, PassRefPtr<BackForwardList>);
43 ~BackForwardController();
45 BackForwardList* client() const { return m_client.get(); }
47 bool canGoBackOrForward(int distance) const;
48 void goBackOrForward(int distance);
53 void addItem(PassRefPtr<HistoryItem>);
54 void setCurrentItem(HistoryItem*);
57 int backCount() const;
58 int forwardCount() const;
60 HistoryItem* itemAtIndex(int);
66 HistoryItem* backItem() { return itemAtIndex(-1); }
67 HistoryItem* currentItem() { return itemAtIndex(0); }
68 HistoryItem* forwardItem() { return itemAtIndex(1); }
70 void markPagesForFullStyleRecalc();
74 RefPtr<BackForwardList> m_client;
77 } // namespace WebCore
79 #endif // BackForwardController_h