1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
4 * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
5 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
6 * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
7 * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
8 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
9 * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
10 * Copyright (C) Research In Motion Limited 2011. All rights reserved.
11 * Copyright (C) 2012 Google Inc. All rights reserved.
12 *
13 * This library is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU Library General Public
15 * License as published by the Free Software Foundation; either
16 * version 2 of the License, or (at your option) any later version.
17 *
18 * This library is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
21 * Library General Public License for more details.
22 *
23 * You should have received a copy of the GNU Library General Public License
24 * along with this library; see the file COPYING.LIB.  If not, write to
25 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
26 * Boston, MA 02110-1301, USA.
27 */
28
29#ifndef VisitedLinkState_h
30#define VisitedLinkState_h
31
32#include "Element.h"
33#include "LinkHash.h"
34#include "RenderStyleConstants.h"
35#include "XLinkNames.h"
36#include <wtf/HashSet.h>
37#include <wtf/OwnPtr.h>
38
39namespace WebCore {
40
41class Document;
42
43class VisitedLinkState {
44    WTF_MAKE_FAST_ALLOCATED;
45public:
46    static PassOwnPtr<VisitedLinkState> create(Document*);
47
48    void invalidateStyleForAllLinks();
49    void invalidateStyleForLink(LinkHash);
50    EInsideLink determineLinkState(Element*);
51
52private:
53    VisitedLinkState(Document*);
54
55    EInsideLink determineLinkStateSlowCase(Element*);
56
57    Document* m_document;
58    HashSet<LinkHash, LinkHashHash> m_linksCheckedForVisitedState;
59};
60
61inline EInsideLink VisitedLinkState::determineLinkState(Element* element)
62{
63    if (!element || !element->isLink())
64        return NotInsideLink;
65    return determineLinkStateSlowCase(element);
66}
67
68}
69
70#endif
71
72