/*

 * Copyright (C) 2007, 2008, 2009, 2010 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"

#if ENABLE(VIDEO)

#include "HTMLVideoElement.h"

#include "Attribute.h"

#include "CSSHelper.h"

#include "CSSPropertyNames.h"

#include "Chrome.h"

#include "ChromeClient.h"

#include "Document.h"

#include "ExceptionCode.h"

#include "HTMLImageLoader.h"

#include "HTMLNames.h"

#include "Page.h"

#include "RenderImage.h"

#include "RenderVideo.h"

namespace WebCore {

using namespace HTMLNames;

inline HTMLVideoElement::HTMLVideoElement(const QualifiedName& tagName, Document* document)

    : HTMLMediaElement(tagName, document)

    , m_shouldDisplayPosterImage(false)

{

    ASSERT(hasTagName(videoTag));

}

PassRefPtr<HTMLVideoElement> HTMLVideoElement::create(const QualifiedName& tagName, Document* document)

{

    return adoptRef(new HTMLVideoElement(tagName, document));

}

bool HTMLVideoElement::rendererIsNeeded(RenderStyle* style) 

{

    return HTMLElement::rendererIsNeeded(style); 

}

#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)

RenderObject* HTMLVideoElement::createRenderer(RenderArena* arena, RenderStyle*)

{

    return new (arena) RenderVideo(this);

}

#endif

void HTMLVideoElement::attach()

{

    HTMLMediaElement::attach();

#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)

    updatePosterImage();

    if (m_shouldDisplayPosterImage) {

        if (!m_imageLoader)

            m_imageLoader.set(new HTMLImageLoader(this));

        m_imageLoader->updateFromElement();

        if (renderer()) {

            RenderImage* imageRenderer = toRenderImage(renderer());

            imageRenderer->setCachedImage(m_imageLoader->image()); 

        }

    }

#endif

}

void HTMLVideoElement::detach()

{

    HTMLMediaElement::detach();

    if (!m_shouldDisplayPosterImage)

        if (m_imageLoader)

            m_imageLoader.clear();

}

void HTMLVideoElement::parseMappedAttribute(Attribute* attr)

{

    const QualifiedName& attrName = attr->name();

    if (attrName == posterAttr) {

        m_posterURL = getNonEmptyURLAttribute(posterAttr);

        updatePosterImage();

        if (m_shouldDisplayPosterImage) {

#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)

            if (!m_imageLoader)

                m_imageLoader.set(new HTMLImageLoader(this));

            m_imageLoader->updateFromElementIgnoringPreviousError();

#else

            if (player())

                player()->setPoster(poster());

#endif

        }

    } else if (attrName == widthAttr)

        addCSSLength(attr, CSSPropertyWidth, attr->value());

    else if (attrName == heightAttr)

        addCSSLength(attr, CSSPropertyHeight, attr->value());

    else

        HTMLMediaElement::parseMappedAttribute(attr);

}

bool HTMLVideoElement::supportsFullscreen() const

{

    Page* page = document() ? document()->page() : 0;

    if (!page) 

        return false;

    if (!player() || !player()->supportsFullscreen() || !player()->hasVideo())

        return false;

    // Check with the platform client.

    return page->chrome()->client()->supportsFullscreenForNode(this);

}

unsigned HTMLVideoElement::videoWidth() const

{

    if (!player())

        return 0;

    return player()->naturalSize().width();

}

unsigned HTMLVideoElement::videoHeight() const

{

    if (!player())

        return 0;

    return player()->naturalSize().height();

}

unsigned HTMLVideoElement::width() const

{

    bool ok;

    unsigned w = getAttribute(widthAttr).string().toUInt(&ok);

    return ok ? w : 0;

}

unsigned HTMLVideoElement::height() const

{

    bool ok;

    unsigned h = getAttribute(heightAttr).string().toUInt(&ok);

    return ok ? h : 0;

}

bool HTMLVideoElement::isURLAttribute(Attribute* attribute) const

{

    return HTMLMediaElement::isURLAttribute(attribute)

        || attribute->name() == posterAttr;

}

const QualifiedName& HTMLVideoElement::imageSourceAttributeName() const

{

    return posterAttr;

}

void HTMLVideoElement::updatePosterImage()

{

#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)

    bool oldShouldShowPosterImage = m_shouldDisplayPosterImage;

#endif

    m_shouldDisplayPosterImage = !poster().isEmpty() && !hasAvailableVideoFrame();

#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)

    if (renderer() && oldShouldShowPosterImage != m_shouldDisplayPosterImage)

        renderer()->updateFromElement();

#endif

}

void HTMLVideoElement::paintCurrentFrameInContext(GraphicsContext* context, const IntRect& destRect)

{

    MediaPlayer* player = HTMLMediaElement::player();

    if (!player)

        return;

    player->setVisible(true); // Make player visible or it won't draw.

    player->paintCurrentFrameInContext(context, destRect);

}

bool HTMLVideoElement::hasAvailableVideoFrame() const

{

    if (!player())

        return false;

    return player()->hasAvailableVideoFrame();

}

void HTMLVideoElement::webkitEnterFullscreen(bool isUserGesture, ExceptionCode& ec)

{

    if (isFullscreen())

        return;

    // Generate an exception if this isn't called in response to a user gesture, or if the 

    // element does not support fullscreen.

    if (!isUserGesture || !supportsFullscreen()) {

        ec = INVALID_STATE_ERR;

        return;

    }

    enterFullscreen();

}

void HTMLVideoElement::webkitExitFullscreen()

{

    if (isFullscreen())

        exitFullscreen();

}

bool HTMLVideoElement::webkitSupportsFullscreen()

{

    return supportsFullscreen();

}

bool HTMLVideoElement::webkitDisplayingFullscreen()

{

    return isFullscreen();

}

void HTMLVideoElement::willMoveToNewOwnerDocument()

{

    if (m_imageLoader)

        m_imageLoader->elementWillMoveToNewOwnerDocument();

    HTMLMediaElement::willMoveToNewOwnerDocument();

}

}

#endif