1/*
2 * Copyright (C) 2012 Intel Corporation. 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 *
8 * 1. Redistributions of source code must retain the above
9 *    copyright notice, this list of conditions and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above
12 *    copyright notice, this list of conditions and the following
13 *    disclaimer in the documentation and/or other materials
14 *    provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#ifndef ViewportStyleResolver_h
31#define ViewportStyleResolver_h
32
33#if ENABLE(CSS_DEVICE_ADAPTATION)
34
35#include "CSSPropertyNames.h"
36#include "FloatSize.h"
37#include <wtf/RefCounted.h>
38#include <wtf/RefPtr.h>
39
40namespace WebCore {
41
42class CSSPrimitiveValue;
43class Document;
44class MutableStylePropertySet;
45class StyleRuleViewport;
46
47class ViewportStyleResolver : public RefCounted<ViewportStyleResolver> {
48public:
49    static PassRefPtr<ViewportStyleResolver> create(Document* document)
50    {
51        return adoptRef(new ViewportStyleResolver(document));
52    }
53
54    ~ViewportStyleResolver();
55
56    void addViewportRule(StyleRuleViewport*);
57
58    void clearDocument();
59    void resolve();
60
61private:
62    explicit ViewportStyleResolver(Document*);
63
64    float getViewportArgumentValue(CSSPropertyID) const;
65
66    Document* m_document;
67    RefPtr<MutableStylePropertySet> m_propertySet;
68};
69
70} // namespace WebCore
71
72#endif // ENABLE(CSS_DEVICE_ADAPTATION)
73
74#endif // ViewportStyleResolver_h
75