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
|
/*
* Copyright (C) 2009 Apple 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.
*/
#include "config.h"
#include "StyleMedia.h"
#include "CSSStyleSelector.h"
#include "Frame.h"
#include "FrameView.h"
#include "MediaList.h"
#include "MediaQueryEvaluator.h"
namespace WebCore {
StyleMedia::StyleMedia(Frame* frame)
: m_frame(frame)
{
}
String StyleMedia::type() const
{
FrameView* view = m_frame ? m_frame->view() : 0;
if (view)
return view->mediaType();
return String();
}
bool StyleMedia::matchMedium(const String& query) const
{
if (!m_frame)
return false;
Document* document = m_frame->document();
ASSERT(document);
Element* documentElement = document->documentElement();
if (!documentElement)
return false;
CSSStyleSelector* styleSelector = document->styleSelector();
if (!styleSelector)
return false;
RefPtr<RenderStyle> rootStyle = styleSelector->styleForElement(documentElement, 0 /*defaultParent*/, false /*allowSharing*/, true /*resolveForRootDefault*/);
RefPtr<MediaList> media = MediaList::create();
ExceptionCode ec = 0;
media->setMediaText(query, ec);
if (ec)
return false;
MediaQueryEvaluator screenEval(type(), m_frame, rootStyle.get());
return screenEval.eval(media.get());
}
} // namespace WebCore
|
