/**

 * This file is part of the DOM implementation for KDE.

 *

 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)

 *           (C) 1999 Antti Koivisto (koivisto@kde.org)

 *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)

 * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.

 * Copyright (C) 2007 Trolltech ASA

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public License

 * along with this library; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

#include "config.h"

#include "HTMLEmbedElement.h"

#include "CSSHelper.h"

#include "CSSPropertyNames.h"

#include "Frame.h"

#include "FrameView.h"

#include "HTMLDocument.h"

#include "HTMLObjectElement.h"

#include "HTMLNames.h"

#include "RenderPartObject.h"

#if PLATFORM(SYMBIAN)

#include "WebCoreWidget.h"

#endif

#if ENABLE(SVG)

#include "ExceptionCode.h"

#include "SVGDocument.h"

#endif

namespace WebCore {

using namespace HTMLNames;

HTMLEmbedElement::HTMLEmbedElement(Document* doc)

    : HTMLPlugInElement(embedTag, doc)

{

}

HTMLEmbedElement::~HTMLEmbedElement()

{

#if USE(JAVASCRIPTCORE_BINDINGS)

    // m_instance should have been cleaned up in detach().

    ASSERT(!m_instance);

#endif

}

#if USE(JAVASCRIPTCORE_BINDINGS)

static inline RenderWidget* findWidgetRenderer(const Node* n) 

{

    if (!n->renderer())

        do

            n = n->parentNode();

        while (n && !n->hasTagName(objectTag));

    return (n && n->renderer() && n->renderer()->isWidget()) 

        ? static_cast<RenderWidget*>(n->renderer()) : 0;

}

KJS::Bindings::Instance *HTMLEmbedElement::getInstance() const

{

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

    if (!frame)

        return 0;

#if PLATFORM(SYMBIAN)

    // if the plugin is already destroyed, need to clear the instance;

    // this happens in out of memory situation.

    if (m_instance) {

        RenderWidget* renderWidget = (renderer() && renderer()->isWidget()) ? static_cast<RenderWidget*>(renderer()) : 0;

        if (renderWidget && renderWidget->widget()) {

            MWebCoreWidget* view = renderWidget->widget()->getView();

            if (!view || !view->pluginScriptableObject()) {

                m_instance = 0;

                return m_instance.get();

            }

        }

    }

#endif

    if (m_instance)

        return m_instance.get();

    RenderWidget* renderWidget = findWidgetRenderer(this);

    if (renderWidget && !renderWidget->widget()) {

        document()->updateLayoutIgnorePendingStylesheets();

        renderWidget = findWidgetRenderer(this);

    }

    if (renderWidget && renderWidget->widget()) 

        m_instance = frame->createScriptInstanceForWidget(renderWidget->widget());

    return m_instance.get();

}

#endif

bool HTMLEmbedElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const

{

    if (attrName == hiddenAttr) {

        result = eUniversal;

        return false;

    }

    return HTMLPlugInElement::mapToEntry(attrName, result);

}

void HTMLEmbedElement::parseMappedAttribute(MappedAttribute* attr)

{

    String val = attr->value();

    if (attr->name() == typeAttr) {

        m_serviceType = val.lower();

        int pos = m_serviceType.find(";");

        if (pos != -1)

            m_serviceType = m_serviceType.left(pos);

    } else if (attr->name() == codeAttr || attr->name() == srcAttr)

         url = parseURL(val).deprecatedString();

    else if (attr->name() == pluginpageAttr || attr->name() == pluginspageAttr)

        m_pluginPage = val;

    else if (attr->name() == hiddenAttr) {

        if (val.lower() == "yes" || val.lower() == "true") {

            // FIXME: Not dynamic, but it's not really important that such a rarely-used

            // feature work dynamically.

            addCSSLength(attr, CSS_PROP_WIDTH, "0");

            addCSSLength(attr, CSS_PROP_HEIGHT, "0");

        }

    } else if (attr->name() == nameAttr) {

        if (inDocument() && document()->isHTMLDocument()) {

            HTMLDocument* doc = static_cast<HTMLDocument*>(document());

            doc->removeNamedItem(oldNameAttr);

            doc->addNamedItem(val);

        }

        oldNameAttr = val;

    } else

        HTMLPlugInElement::parseMappedAttribute(attr);

}

bool HTMLEmbedElement::rendererIsNeeded(RenderStyle *style)

{

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

    if (!frame)

        return false;

    Node *p = parentNode();

    if (p && p->hasTagName(objectTag)) {

        ASSERT(p->renderer());

        return false;

    }

    return true;

}

RenderObject *HTMLEmbedElement::createRenderer(RenderArena *arena, RenderStyle *style)

{

    return new (arena) RenderPartObject(this);

}

void HTMLEmbedElement::attach()

{

    HTMLPlugInElement::attach();

    if (renderer())

        static_cast<RenderPartObject*>(renderer())->updateWidget(true);

}

void HTMLEmbedElement::detach()

{

#if USE(JAVASCRIPTCORE_BINDINGS)

    m_instance = 0;

#endif

    HTMLPlugInElement::detach();

}

void HTMLEmbedElement::insertedIntoDocument()

{

    if (document()->isHTMLDocument()) {

        HTMLDocument *doc = static_cast<HTMLDocument *>(document());

        doc->addNamedItem(oldNameAttr);

    }

    String width = getAttribute(widthAttr);

    String height = getAttribute(heightAttr);

    if (!width.isEmpty() || !height.isEmpty()) {

        Node* n = parent();

        while (n && !n->hasTagName(objectTag))

            n = n->parent();

        if (n) {

            if (!width.isEmpty())

                static_cast<HTMLObjectElement*>(n)->setAttribute(widthAttr, width);

            if (!height.isEmpty())

                static_cast<HTMLObjectElement*>(n)->setAttribute(heightAttr, height);

        }

    }

    HTMLPlugInElement::insertedIntoDocument();

}

void HTMLEmbedElement::removedFromDocument()

{

    if (document()->isHTMLDocument()) {

        HTMLDocument *doc = static_cast<HTMLDocument *>(document());

        doc->removeNamedItem(oldNameAttr);

    }

    HTMLPlugInElement::removedFromDocument();

}

void HTMLEmbedElement::attributeChanged(Attribute* attr, bool preserveDecls)

{

    HTMLPlugInElement::attributeChanged(attr, preserveDecls);

    if ((attr->name() == widthAttr || attr->name() == heightAttr) && !attr->isEmpty()) {

        Node* n = parent();

        while (n && !n->hasTagName(objectTag))

            n = n->parent();

        if (n)

            static_cast<HTMLObjectElement*>(n)->setAttribute(attr->name(), attr->value());

    }

}

bool HTMLEmbedElement::isURLAttribute(Attribute *attr) const

{

    return attr->name() == srcAttr;

}

String HTMLEmbedElement::src() const

{

    return getAttribute(srcAttr);

}

void HTMLEmbedElement::setSrc(const String& value)

{

    setAttribute(srcAttr, value);

}

String HTMLEmbedElement::type() const

{

    return getAttribute(typeAttr);

}

void HTMLEmbedElement::setType(const String& value)

{

    setAttribute(typeAttr, value);

}

#if ENABLE(SVG)

SVGDocument* HTMLEmbedElement::getSVGDocument(ExceptionCode& ec) const

{

    Document* doc = contentDocument();

    if (doc && doc->isSVGDocument())

        return static_cast<SVGDocument*>(doc);

    // Spec: http://www.w3.org/TR/SVG/struct.html#InterfaceGetSVGDocument

    ec = NOT_SUPPORTED_ERR;

    return 0;

}

#endif

#if PLATFORM(SYMBIAN)

bool HTMLEmbedElement::isFocusable() const

{

    if (!renderer() || (renderer()->style() && renderer()->style()->visibility() != VISIBLE) || 

        renderer()->width() == 0 || renderer()->height() == 0)

        return false;

    return static_cast<RenderPartObject*>(renderer())->isFocusable();

}

#endif

}