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 COMPUTER, 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 COMPUTER, 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 "third_party/blink/renderer/core/css/style_media.h"
27
28 #include "third_party/blink/renderer/core/css/media_list.h"
29 #include "third_party/blink/renderer/core/css/media_query_evaluator.h"
30 #include "third_party/blink/renderer/core/dom/document.h"
31 #include "third_party/blink/renderer/core/frame/local_dom_window.h"
32 #include "third_party/blink/renderer/core/frame/local_frame.h"
33 #include "third_party/blink/renderer/core/frame/local_frame_view.h"
34
35 namespace blink {
36
StyleMedia(LocalFrame * frame)37 StyleMedia::StyleMedia(LocalFrame* frame) : ExecutionContextClient(frame) {}
38
type() const39 AtomicString StyleMedia::type() const {
40 LocalFrameView* view = GetFrame() ? GetFrame()->View() : nullptr;
41 if (view)
42 return view->MediaType();
43
44 return g_null_atom;
45 }
46
matchMedium(const String & query) const47 bool StyleMedia::matchMedium(const String& query) const {
48 if (!GetFrame())
49 return false;
50
51 Document* document = GetFrame()->GetDocument();
52 DCHECK(document);
53 Element* document_element = document->documentElement();
54 if (!document_element)
55 return false;
56
57 scoped_refptr<MediaQuerySet> media = MediaQuerySet::Create();
58 if (!media->Set(query, GetFrame()->DomWindow()))
59 return false;
60
61 MediaQueryEvaluator screen_eval(GetFrame());
62 return screen_eval.Eval(*media);
63 }
64
Trace(Visitor * visitor)65 void StyleMedia::Trace(Visitor* visitor) {
66 ScriptWrappable::Trace(visitor);
67 ExecutionContextClient::Trace(visitor);
68 }
69
70 } // namespace blink
71