/*
 * 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, 2008 Apple Inc. ALl rights reserved.
 * 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 "HTMLAppletElement.h"

#include "Frame.h"
#include "HTMLDocument.h"
#include "HTMLNames.h"
#include "RenderApplet.h"
#include "RenderInline.h"
#include "Settings.h"

namespace WebCore {

using namespace HTMLNames;

HTMLAppletElement::HTMLAppletElement(Document* doc)
    : HTMLPlugInElement(appletTag, doc)
{
}

HTMLAppletElement::~HTMLAppletElement()
{
#if USE(JAVASCRIPTCORE_BINDINGS)
    // m_instance should have been cleaned up in detach().
    ASSERT(!m_instance);
#endif
}

void HTMLAppletElement::parseMappedAttribute(MappedAttribute* attr)
{
    if (attr->name() == altAttr ||
        attr->name() == archiveAttr ||
        attr->name() == codeAttr ||
        attr->name() == codebaseAttr ||
        attr->name() == mayscriptAttr ||
        attr->name() == objectAttr) {
        // Do nothing.
    } else if (attr->name() == nameAttr) {
        String newNameAttr = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* doc = static_cast<HTMLDocument*>(document());
            doc->removeNamedItem(oldNameAttr);
            doc->addNamedItem(newNameAttr);
        }
        oldNameAttr = newNameAttr;
    } else if (attr->name() == idAttr) {
        String newIdAttr = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* doc = static_cast<HTMLDocument*>(document());
            doc->removeDocExtraNamedItem(oldIdAttr);
            doc->addDocExtraNamedItem(newIdAttr);
        }
        oldIdAttr = newIdAttr;
        // also call superclass
        HTMLPlugInElement::parseMappedAttribute(attr);
    } else
        HTMLPlugInElement::parseMappedAttribute(attr);
}

void HTMLAppletElement::insertedIntoDocument()
{
    if (document()->isHTMLDocument()) {
        HTMLDocument* doc = static_cast<HTMLDocument*>(document());
        doc->addNamedItem(oldNameAttr);
        doc->addDocExtraNamedItem(oldIdAttr);
    }

    HTMLPlugInElement::insertedIntoDocument();
}

void HTMLAppletElement::removedFromDocument()
{
    if (document()->isHTMLDocument()) {
        HTMLDocument* doc = static_cast<HTMLDocument*>(document());
        doc->removeNamedItem(oldNameAttr);
        doc->removeDocExtraNamedItem(oldIdAttr);
    }

    HTMLPlugInElement::removedFromDocument();
}

bool HTMLAppletElement::rendererIsNeeded(RenderStyle* style)
{
    return !getAttribute(codeAttr).isNull();
}

RenderObject* HTMLAppletElement::createRenderer(RenderArena* arena, RenderStyle* style)
{
    Settings* settings = document()->settings();

    if (settings && settings->isJavaEnabled()) {
        HashMap<String, String> args;

        args.set("code", getAttribute(codeAttr));
        const AtomicString& codeBase = getAttribute(codebaseAttr);
        if(!codeBase.isNull())
            args.set("codeBase", codeBase);
        const AtomicString& name = getAttribute(document()->isHTMLDocument() ? nameAttr : idAttr);
        if (!name.isNull())
            args.set("name", name);
        const AtomicString& archive = getAttribute(archiveAttr);
        if (!archive.isNull())
            args.set("archive", archive);

        args.set("baseURL", document()->baseURL().string());

        const AtomicString& mayScript = getAttribute(mayscriptAttr);
        if (!mayScript.isNull())
            args.set("mayScript", mayScript);

        // Other arguments (from <PARAM> tags) are added later.
        
        return new (document()->renderArena()) RenderApplet(this, args);
    }

    return RenderObject::createObject(this, style);
}

#if USE(JAVASCRIPTCORE_BINDINGS)
KJS::Bindings::Instance* HTMLAppletElement::getInstance() const
{
    Settings* settings = document()->settings();
    if (!settings || !settings->isJavaEnabled())
        return 0;

    if (m_instance)
        return m_instance.get();
    
    if (RenderApplet* r = static_cast<RenderApplet*>(renderer())) {
        r->createWidgetIfNecessary();
        if (r->widget() && document()->frame())
            m_instance = document()->frame()->createScriptInstanceForWidget(r->widget());
    }
    return m_instance.get();
}
#endif

void HTMLAppletElement::finishParsingChildren()
{
    // The parser just reached </applet>, so all the params are available now.
    HTMLPlugInElement::finishParsingChildren();
    if (renderer())
        renderer()->setNeedsLayout(true); // This will cause it to create its widget & the Java applet
}

void HTMLAppletElement::detach()
{
#if USE(JAVASCRIPTCORE_BINDINGS)
    m_instance = 0;
#endif
    HTMLPlugInElement::detach();
}

String HTMLAppletElement::alt() const
{
    return getAttribute(altAttr);
}

void HTMLAppletElement::setAlt(const String &value)
{
    setAttribute(altAttr, value);
}

String HTMLAppletElement::archive() const
{
    return getAttribute(archiveAttr);
}

void HTMLAppletElement::setArchive(const String &value)
{
    setAttribute(archiveAttr, value);
}

String HTMLAppletElement::code() const
{
    return getAttribute(codeAttr);
}

void HTMLAppletElement::setCode(const String &value)
{
    setAttribute(codeAttr, value);
}

String HTMLAppletElement::codeBase() const
{
    return getAttribute(codebaseAttr);
}

void HTMLAppletElement::setCodeBase(const String &value)
{
    setAttribute(codebaseAttr, value);
}

String HTMLAppletElement::hspace() const
{
    return getAttribute(hspaceAttr);
}

void HTMLAppletElement::setHspace(const String &value)
{
    setAttribute(hspaceAttr, value);
}

String HTMLAppletElement::object() const
{
    return getAttribute(objectAttr);
}

void HTMLAppletElement::setObject(const String &value)
{
    setAttribute(objectAttr, value);
}

String HTMLAppletElement::vspace() const
{
    return getAttribute(vspaceAttr);
}

void HTMLAppletElement::setVspace(const String &value)
{
    setAttribute(vspaceAttr, value);
}

}
