1/*
2 * Copyright (C) 2009 Apple Inc. 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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "StyleMedia.h"
28
29#include "Document.h"
30#include "Frame.h"
31#include "FrameView.h"
32#include "MediaList.h"
33#include "MediaQueryEvaluator.h"
34#include "MediaQueryParser.h"
35#include "NodeRenderStyle.h"
36#include "RenderElement.h"
37#include "StyleResolver.h"
38#include "StyleScope.h"
39
40namespace WebCore {
41
42StyleMedia::StyleMedia(DOMWindow& window)
43 : DOMWindowProperty(&window)
44{
45}
46
47String StyleMedia::type() const
48{
49 auto* frame = this->frame();
50 FrameView* view = frame ? frame->view() : nullptr;
51 if (view)
52 return view->mediaType();
53
54 return String();
55}
56
57bool StyleMedia::matchMedium(const String& query) const
58{
59 auto* frame = this->frame();
60 if (!frame)
61 return false;
62
63 Document* document = frame->document();
64 ASSERT(document);
65 Element* documentElement = document->documentElement();
66 if (!documentElement)
67 return false;
68
69 auto rootStyle = document->styleScope().resolver().styleForElement(*documentElement, document->renderStyle(), nullptr, RuleMatchingBehavior::MatchOnlyUserAgentRules).renderStyle;
70
71 auto media = MediaQuerySet::create(query, MediaQueryParserContext(*document));
72
73 return MediaQueryEvaluator { type(), *document, rootStyle.get() }.evaluate(media.get());
74}
75
76} // namespace WebCore
77