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(LocalDOMWindow * window)37 StyleMedia::StyleMedia(LocalDOMWindow* window)
38 : ExecutionContextClient(window) {}
39
type() const40 AtomicString StyleMedia::type() const {
41 if (!DomWindow())
42 return g_null_atom;
43 return DomWindow()->GetFrame()->View()->MediaType();
44 }
45
matchMedium(const String & query) const46 bool StyleMedia::matchMedium(const String& query) const {
47 if (!DomWindow())
48 return false;
49
50 Element* document_element = DomWindow()->document()->documentElement();
51 if (!document_element)
52 return false;
53
54 scoped_refptr<MediaQuerySet> media = MediaQuerySet::Create();
55 if (!media->Set(query, DomWindow()))
56 return false;
57
58 MediaQueryEvaluator screen_eval(DomWindow()->GetFrame());
59 return screen_eval.Eval(*media);
60 }
61
Trace(Visitor * visitor) const62 void StyleMedia::Trace(Visitor* visitor) const {
63 ScriptWrappable::Trace(visitor);
64 ExecutionContextClient::Trace(visitor);
65 }
66
67 } // namespace blink
68