blob: 971a5c729073ee4d3713900f15da78480ed173f6 [file] [log] [blame]
/*
* 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 "core/css/StyleMedia.h"
#include "core/css/MediaList.h"
#include "core/css/MediaQueryEvaluator.h"
#include "core/dom/Document.h"
#include "core/frame/LocalFrame.h"
#include "core/frame/LocalFrameView.h"
namespace blink {
StyleMedia::StyleMedia(LocalFrame* frame) : ContextClient(frame) {}
AtomicString StyleMedia::type() const {
LocalFrameView* view = GetFrame() ? GetFrame()->View() : nullptr;
if (view)
return view->MediaType();
return g_null_atom;
}
bool StyleMedia::matchMedium(const String& query) const {
if (!GetFrame())
return false;
Document* document = GetFrame()->GetDocument();
DCHECK(document);
Element* document_element = document->documentElement();
if (!document_element)
return false;
scoped_refptr<MediaQuerySet> media = MediaQuerySet::Create();
if (!media->Set(query))
return false;
MediaQueryEvaluator screen_eval(GetFrame());
return screen_eval.Eval(*media);
}
void StyleMedia::Trace(blink::Visitor* visitor) {
ScriptWrappable::Trace(visitor);
ContextClient::Trace(visitor);
}
} // namespace blink