/*

 * 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();

    ASSERT(documentElement);

    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