Source/WebCore/bindings/js/JSDOMGlobalObject.cpp

/*
 * Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 1. Redistributions of source code must retain the above copyright
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 *    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 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 INC. OR
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#include "config.h"
#include "JSDOMGlobalObject.h"

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

using namespace JSC;

namespace WebCore {

const ClassInfo JSDOMGlobalObject::s_info = { "DOMGlobalObject", &JSGlobalObject::s_info, 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)
    , m_worldIsNormal(m_world->isNormal())
{
    ASSERT(m_world);
}

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

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

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

ScriptExecutionContext* JSDOMGlobalObject::scriptExecutionContext() const
{
    if (inherits(JSDOMWindowBase::info()))
        return jsCast<const JSDOMWindowBase*>(this)->scriptExecutionContext();
    if (inherits(JSWorkerGlobalScopeBase::info()))
        return jsCast<const JSWorkerGlobalScopeBase*>(this)->scriptExecutionContext();
    ASSERT_NOT_REACHED();
    return 0;
}

void JSDOMGlobalObject::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
    JSDOMGlobalObject* thisObject = jsCast<JSDOMGlobalObject*>(cell);
    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
    Base::visitChildren(thisObject, visitor);

    for (auto& structure : thisObject->structures().values())
        visitor.append(&structure);

    for (auto& constructor : thisObject->constructors().values())
        visitor.append(&constructor);
}

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 (is<Document>(scriptExecutionContext))
        return toJSDOMGlobalObject(downcast<Document>(scriptExecutionContext), exec);

    if (scriptExecutionContext->isWorkerGlobalScope())
        return toWorkerGlobalScope(scriptExecutionContext)->script()->workerGlobalScopeWrapper();

    ASSERT_NOT_REACHED();
    return nullptr;
}

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

JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext* scriptExecutionContext, DOMWrapperWorld& world)
{
    if (is<Document>(scriptExecutionContext))
        return toJSDOMGlobalObject(downcast<Document>(scriptExecutionContext), world);

    if (scriptExecutionContext->isWorkerGlobalScope())
        return toWorkerGlobalScope(scriptExecutionContext)->script()->workerGlobalScopeWrapper();

    ASSERT_NOT_REACHED();
    return nullptr;
}

} // namespace WebCore