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#pragma once
31
32#if ENABLE(CSS_DEVICE_ADAPTATION)
33
34#include "CSSPropertyNames.h"
35#include <wtf/RefCounted.h>
36#include <wtf/RefPtr.h>
37
38namespace WebCore {
39
40class CSSPrimitiveValue;
41class Document;
42class MutableStyleProperties;
43class StyleRuleViewport;
44
45class ViewportStyleResolver final : public RefCounted<ViewportStyleResolver> {
46public:
47 static Ref<ViewportStyleResolver> create(Document* document)
48 {
49 return adoptRef(*new ViewportStyleResolver(document));
50 }
51
52 ~ViewportStyleResolver();
53
54 void addViewportRule(StyleRuleViewport*);
55
56 void clearDocument();
57 void resolve();
58
59private:
60 explicit ViewportStyleResolver(Document*);
61
62 float getViewportArgumentValue(CSSPropertyID) const;
63
64 WeakPtr<Document> m_document;
65 RefPtr<MutableStyleProperties> m_propertySet;
66};
67
68} // namespace WebCore
69
70#endif // ENABLE(CSS_DEVICE_ADAPTATION)
71