1 | /* |
2 | * Copyright (C) 2006, 2010, 2016 Apple Inc. All rights reserved. |
3 | * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) |
4 | * Copyright (C) 2009 Google, Inc. All rights reserved. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * |
15 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
16 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
18 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
19 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
22 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
23 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | */ |
27 | |
28 | #pragma once |
29 | |
30 | #include <wtf/Forward.h> |
31 | #include <wtf/RefCounted.h> |
32 | |
33 | namespace WebCore { |
34 | |
35 | class HistoryItem; |
36 | |
37 | class BackForwardClient : public RefCounted<BackForwardClient> { |
38 | public: |
39 | virtual ~BackForwardClient() |
40 | { |
41 | } |
42 | |
43 | virtual void addItem(Ref<HistoryItem>&&) = 0; |
44 | |
45 | virtual void goToItem(HistoryItem&) = 0; |
46 | |
47 | virtual RefPtr<HistoryItem> itemAtIndex(int) = 0; |
48 | virtual unsigned backListCount() const = 0; |
49 | virtual unsigned forwardListCount() const = 0; |
50 | |
51 | virtual void close() = 0; |
52 | }; |
53 | |
54 | } // namespace WebCore |
55 | |