/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

 * vim: set ts=4 sw=4 et tw=80:

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_jsipc_JavaScriptChild_h_

#define mozilla_jsipc_JavaScriptChild_h_

#include "JavaScriptBase.h"

#include "mozilla/jsipc/PJavaScriptChild.h"

namespace mozilla {

namespace jsipc {

class JavaScriptChild : public JavaScriptBase<PJavaScriptChild>

{

  public:

    JavaScriptChild() : strongReferenceObjIdMinimum_(0) {}

    virtual ~JavaScriptChild();

    bool init();

    void trace(JSTracer* trc);

    void updateWeakPointers();

    void drop(JSObject* obj);

    bool allowMessage(JSContext* cx) override { return true; }

  protected:

    virtual bool isParent() override { return false; }

    virtual JSObject* scopeForTargetObjects() override;

    mozilla::ipc::IPCResult RecvDropTemporaryStrongReferences(const uint64_t& upToObjId) override;

  private:

    bool fail(JSContext* cx, ReturnStatus* rs);

    bool ok(ReturnStatus* rs);

    // JavaScriptChild will keep strong references to JS objects that are

    // referenced by the parent only if their ID is >=

    // strongReferenceObjIdMinimum_.

    uint64_t strongReferenceObjIdMinimum_;

};

} // namespace jsipc

} // namespace mozilla

#endif