1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/*
* Copyright (C) 2006, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (C) 2009 Google, 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 BackForwardList_h
#define BackForwardList_h
#include "BackForwardClient.h"
#include <wtf/HashSet.h>
#include <wtf/Vector.h>
namespace WebCore {
class Page;
typedef Vector<RefPtr<HistoryItem>> HistoryItemVector;
typedef HashSet<RefPtr<HistoryItem>> HistoryItemHashSet;
class BackForwardList : public BackForwardClient {
public:
static PassRefPtr<BackForwardList> create(Page* page) { return adoptRef(new BackForwardList(page)); }
virtual ~BackForwardList();
Page* page() { return m_page; }
virtual void addItem(PassRefPtr<HistoryItem>) override;
void goBack();
void goForward();
virtual void goToItem(HistoryItem*) override;
HistoryItem* backItem();
HistoryItem* currentItem();
HistoryItem* forwardItem();
virtual HistoryItem* itemAtIndex(int) override;
void backListWithLimit(int, HistoryItemVector&);
void forwardListWithLimit(int, HistoryItemVector&);
int capacity();
void setCapacity(int);
bool enabled();
void setEnabled(bool);
virtual int backListCount() override;
virtual int forwardListCount() override;
bool containsItem(HistoryItem*);
virtual void close() override;
bool closed();
void removeItem(HistoryItem*);
HistoryItemVector& entries();
#if PLATFORM(IOS)
virtual unsigned current() override;
virtual void setCurrent(unsigned newCurrent) override;
virtual bool clearAllPageCaches() override;
#endif
private:
explicit BackForwardList(Page*);
Page* m_page;
HistoryItemVector m_entries;
HistoryItemHashSet m_entryHash;
unsigned m_current;
unsigned m_capacity;
bool m_closed;
bool m_enabled;
};
} // namespace WebCore
#endif // BackForwardList_h
|
