1 | /* |
2 | * Copyright (C) 2010 Apple Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
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. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
14 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
15 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
17 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
18 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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 |
21 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
22 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
23 | * THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #pragma once |
27 | |
28 | #include <wtf/Noncopyable.h> |
29 | #include <wtf/Forward.h> |
30 | #include <wtf/RefPtr.h> |
31 | |
32 | namespace WebCore { |
33 | |
34 | class BackForwardClient; |
35 | class HistoryItem; |
36 | class Page; |
37 | |
38 | class BackForwardController { |
39 | WTF_MAKE_NONCOPYABLE(BackForwardController); WTF_MAKE_FAST_ALLOCATED; |
40 | public: |
41 | BackForwardController(Page&, Ref<BackForwardClient>&&); |
42 | ~BackForwardController(); |
43 | |
44 | BackForwardClient& client() { return m_client.get(); } |
45 | const BackForwardClient& client() const { return m_client.get(); } |
46 | |
47 | WEBCORE_EXPORT bool canGoBackOrForward(int distance) const; |
48 | void goBackOrForward(int distance); |
49 | |
50 | WEBCORE_EXPORT bool goBack(); |
51 | WEBCORE_EXPORT bool goForward(); |
52 | |
53 | void addItem(Ref<HistoryItem>&&); |
54 | void setCurrentItem(HistoryItem&); |
55 | |
56 | unsigned count() const; |
57 | WEBCORE_EXPORT unsigned backCount() const; |
58 | WEBCORE_EXPORT unsigned forwardCount() const; |
59 | |
60 | WEBCORE_EXPORT RefPtr<HistoryItem> itemAtIndex(int); |
61 | |
62 | void close(); |
63 | |
64 | WEBCORE_EXPORT RefPtr<HistoryItem> backItem(); |
65 | WEBCORE_EXPORT RefPtr<HistoryItem> currentItem(); |
66 | WEBCORE_EXPORT RefPtr<HistoryItem> forwardItem(); |
67 | |
68 | private: |
69 | Page& m_page; |
70 | Ref<BackForwardClient> m_client; |
71 | }; |
72 | |
73 | } // namespace WebCore |
74 | |