/*

 * Copyright (C) 2006, 2008 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,

 * 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 "PluginDocument.h"

#include "DocumentLoader.h"

#include "Frame.h"

#include "FrameLoaderClient.h"

#include "HTMLEmbedElement.h"

#include "HTMLNames.h"

#include "MainResourceLoader.h"

#include "Page.h"

#include "RawDataDocumentParser.h"

#include "RenderEmbeddedObject.h"

#include "Settings.h"

namespace WebCore {

using namespace HTMLNames;

// FIXME: Share more code with MediaDocumentParser.

class PluginDocumentParser : public RawDataDocumentParser {

public:

    PluginDocumentParser(Document* document)

        : RawDataDocumentParser(document)

        , m_embedElement(0)

    {

    }

    static Widget* pluginWidgetFromDocument(Document*);

private:

    virtual void appendBytes(DocumentWriter*, const char*, int, bool);

    void createDocumentStructure();

    HTMLEmbedElement* m_embedElement;

};

Widget* PluginDocumentParser::pluginWidgetFromDocument(Document* doc)

{

    ASSERT(doc);

    RefPtr<Element> body = doc->body();

    if (body) {

        RefPtr<Node> node = body->firstChild();

        if (node && node->renderer()) {

            ASSERT(node->renderer()->isEmbeddedObject());

            return toRenderEmbeddedObject(node->renderer())->widget();

        }

    }

    return 0;

}

void PluginDocumentParser::createDocumentStructure()

{

    ExceptionCode ec;

    RefPtr<Element> rootElement = document()->createElement(htmlTag, false);

    document()->appendChild(rootElement, ec);

    RefPtr<Element> body = document()->createElement(bodyTag, false);

    body->setAttribute(marginwidthAttr, "0");

    body->setAttribute(marginheightAttr, "0");

    body->setAttribute(bgcolorAttr, "rgb(38,38,38)");

    rootElement->appendChild(body, ec);

    RefPtr<Element> embedElement = document()->createElement(embedTag, false);

    m_embedElement = static_cast<HTMLEmbedElement*>(embedElement.get());

    m_embedElement->setAttribute(widthAttr, "100%");

    m_embedElement->setAttribute(heightAttr, "100%");

    m_embedElement->setAttribute(nameAttr, "plugin");

    m_embedElement->setAttribute(srcAttr, document()->url().string());

    m_embedElement->setAttribute(typeAttr, document()->frame()->loader()->writer()->mimeType());

    body->appendChild(embedElement, ec);    

}

void PluginDocumentParser::appendBytes(DocumentWriter*, const char*, int, bool)

{

    ASSERT(!m_embedElement);

    if (m_embedElement)

        return;

    createDocumentStructure();

    Frame* frame = document()->frame();

    if (!frame)

        return;

    Settings* settings = frame->settings();

    if (!settings || !frame->loader()->subframeLoader()->allowPlugins(NotAboutToInstantiatePlugin))

        return;

    document()->updateLayout();

    if (RenderWidget* renderer = toRenderWidget(m_embedElement->renderer())) {

        frame->loader()->client()->redirectDataToPlugin(renderer->widget());

        frame->loader()->activeDocumentLoader()->mainResourceLoader()->setShouldBufferData(false);

    }

    finish();

}

PluginDocument::PluginDocument(Frame* frame, const KURL& url)

    : HTMLDocument(frame, url)

{

    setParseMode(Compat);

}

DocumentParser* PluginDocument::createParser()

{

    return new PluginDocumentParser(this);

}

Widget* PluginDocument::pluginWidget()

{

    return PluginDocumentParser::pluginWidgetFromDocument(this);

}

Node* PluginDocument::pluginNode()

{

    RefPtr<Element> body_element = body();

    if (body_element)

        return body_element->firstChild();

    return 0;

}

}