JSWindowProxy.h   [plain text]

/*
 * Copyright (C) 2008-2018 Apple Inc. All rights reserved.
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 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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#pragma once

#include "JSDOMConvertInterface.h"
#include "JSDOMWindow.h"
#include "WindowProxy.h"
#include <JavaScriptCore/JSProxy.h>

namespace JSC {
class Debugger;
}

namespace WebCore {

class AbstractDOMWindow;
class AbstractFrame;

class JSWindowProxy final : public JSC::JSProxy {
public:
    using Base = JSC::JSProxy;
    static constexpr bool needsDestruction = true;
    static void destroy(JSCell*);

    template<typename CellType, JSC::SubspaceAccess>
    static JSC::IsoSubspace* subspaceFor(JSC::VM& vm)
    {
        return subspaceForImpl(vm);
    }

    static JSWindowProxy& create(JSC::VM&, AbstractDOMWindow&, DOMWrapperWorld&);

    DECLARE_INFO;

    JSDOMGlobalObject* window() const { return static_cast<JSDOMGlobalObject*>(target()); }
    void setWindow(JSC::VM&, JSDOMGlobalObject&);
    void setWindow(AbstractDOMWindow&);

    WindowProxy* windowProxy() const;

    AbstractDOMWindow& wrapped() const;
    static WEBCORE_EXPORT WindowProxy* toWrapped(JSC::VM&, JSC::JSValue);

    DOMWrapperWorld& world() { return m_world; }

    void attachDebugger(JSC::Debugger*);

private:
    JSWindowProxy(JSC::VM&, JSC::Structure&, DOMWrapperWorld&);
    void finishCreation(JSC::VM&, AbstractDOMWindow&);
    static JSC::IsoSubspace* subspaceForImpl(JSC::VM&);

    Ref<DOMWrapperWorld> m_world;
};

// JSWindowProxy is a little odd in that it's not a traditional wrapper and has no back pointer.
// It is, however, strongly owned by AbstractFrame via its WindowProxy, so we can get one from a WindowProxy.
WEBCORE_EXPORT JSC::JSValue toJS(JSC::JSGlobalObject*, WindowProxy&);
inline JSC::JSValue toJS(JSC::JSGlobalObject* lexicalGlobalObject, WindowProxy* windowProxy) { return windowProxy ? toJS(lexicalGlobalObject, *windowProxy) : JSC::jsNull(); }
inline JSC::JSValue toJS(JSC::JSGlobalObject* lexicalGlobalObject, JSDOMGlobalObject*, WindowProxy& windowProxy) { return toJS(lexicalGlobalObject, windowProxy); }
inline JSC::JSValue toJS(JSC::JSGlobalObject* lexicalGlobalObject, JSDOMGlobalObject* globalObject, WindowProxy* windowProxy) { return windowProxy ? toJS(lexicalGlobalObject, globalObject, *windowProxy) : JSC::jsNull(); }

JSWindowProxy* toJSWindowProxy(WindowProxy&, DOMWrapperWorld&);
inline JSWindowProxy* toJSWindowProxy(WindowProxy* windowProxy, DOMWrapperWorld& world) { return windowProxy ? toJSWindowProxy(*windowProxy, world) : nullptr; }


template<> struct JSDOMWrapperConverterTraits<WindowProxy> {
    using WrapperClass = JSWindowProxy;
    using ToWrappedReturnType = WindowProxy*;
};

} // namespace WebCore