Source/WebCore/bindings/js/JSDOMGlobalObject.cpp

/*
 * Copyright (C) 2008, 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
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 * 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
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#include "config.h"
#include "JSDOMGlobalObject.h"

#include "Document.h"
#include "JSDOMWindow.h"
#include "JSEventListener.h"

#if ENABLE(WORKERS)
#include "JSWorkerGlobalScope.h"
#include "WorkerGlobalScope.h"
#endif

using namespace JSC;

namespace WebCore {

const ClassInfo JSDOMGlobalObject::s_info = { "DOMGlobalObject", &JSGlobalObject::s_info, 0, 0, CREATE_METHOD_TABLE(JSDOMGlobalObject) };

JSDOMGlobalObject::JSDOMGlobalObject(VM& vm, Structure* structure, PassRefPtr<DOMWrapperWorld> world, const GlobalObjectMethodTable* globalObjectMethodTable)
    : JSGlobalObject(vm, structure, globalObjectMethodTable)
    , m_currentEvent(0)
    , m_world(world)
{
}

void JSDOMGlobalObject::destroy(JSCell* cell)
{
    static_cast<JSDOMGlobalObject*>(cell)->JSDOMGlobalObject::~JSDOMGlobalObject();
}

void JSDOMGlobalObject::finishCreation(VM& vm)
{
    Base::finishCreation(vm);
    ASSERT(inherits(&s_info));
}

void JSDOMGlobalObject::finishCreation(VM& vm, JSObject* thisValue)
{
    Base::finishCreation(vm, thisValue);
    ASSERT(inherits(&s_info));
}

ScriptExecutionContext* JSDOMGlobalObject::scriptExecutionContext() const
{
    if (inherits(&JSDOMWindowBase::s_info))
        return jsCast<const JSDOMWindowBase*>(this)->scriptExecutionContext();
#if ENABLE(WORKERS)
    if (inherits(&JSWorkerGlobalScopeBase::s_info))
        return jsCast<const JSWorkerGlobalScopeBase*>(this)->scriptExecutionContext();
#endif
    ASSERT_NOT_REACHED();
    return 0;
}

void JSDOMGlobalObject::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
    JSDOMGlobalObject* thisObject = jsCast<JSDOMGlobalObject*>(cell);
    ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
    COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
    ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
    Base::visitChildren(thisObject, visitor);

    JSDOMStructureMap::iterator end = thisObject->structures().end();
    for (JSDOMStructureMap::iterator it = thisObject->structures().begin(); it != end; ++it)
        visitor.append(&it->value);

    JSDOMConstructorMap::iterator end2 = thisObject->constructors().end();
    for (JSDOMConstructorMap::iterator it2 = thisObject->constructors().begin(); it2 != end2; ++it2)
        visitor.append(&it2->value);
}

void JSDOMGlobalObject::setCurrentEvent(Event* currentEvent)
{
    m_currentEvent = currentEvent;
}

Event* JSDOMGlobalObject::currentEvent() const
{
    return m_currentEvent;
}

JSDOMGlobalObject* toJSDOMGlobalObject(Document* document, JSC::ExecState* exec)
{
    return toJSDOMWindow(document->frame(), currentWorld(exec));
}

JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext* scriptExecutionContext, JSC::ExecState* exec)
{
    if (scriptExecutionContext->isDocument())
        return toJSDOMGlobalObject(toDocument(scriptExecutionContext), exec);

#if ENABLE(WORKERS)
    if (scriptExecutionContext->isWorkerGlobalScope())
        return static_cast<WorkerGlobalScope*>(scriptExecutionContext)->script()->workerGlobalScopeWrapper();
#endif

    ASSERT_NOT_REACHED();
    return 0;
}

JSDOMGlobalObject* toJSDOMGlobalObject(Document* document, DOMWrapperWorld* world)
{
    return toJSDOMWindow(document->frame(), world);
}

JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext* scriptExecutionContext, DOMWrapperWorld* world)
{
    if (scriptExecutionContext->isDocument())
        return toJSDOMGlobalObject(toDocument(scriptExecutionContext), world);

#if ENABLE(WORKERS)
    if (scriptExecutionContext->isWorkerGlobalScope())
        return static_cast<WorkerGlobalScope*>(scriptExecutionContext)->script()->workerGlobalScopeWrapper();
#endif

    ASSERT_NOT_REACHED();
    return 0;
}

} // namespace WebCore