/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * 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/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */
#pragma once

#include <rtl/ref.hxx>

namespace chart
{
class ChartModel;
}

namespace chart
{
/** This guard calls lockControllers at the given Model in the CTOR and
    unlockControllers in the DTOR.  Using this ensures that controllers do not
    remain locked when leaving a function even in case an exception is thrown.
 */
class ControllerLockGuardUNO
{
public:
    explicit ControllerLockGuardUNO(rtl::Reference<::chart::ChartModel> xModel);
    ~ControllerLockGuardUNO();

private:
    rtl::Reference<::chart::ChartModel> mxModel;
};

class ControllerLockGuard
{
public:
    explicit ControllerLockGuard(ChartModel& rModel);
    ~ControllerLockGuard();

private:
    ChartModel& mrModel;
};

/** This helper class can be used to pass a locking mechanism to other objects
    without exposing the full XModel to it.

    Use the ControllerLockHelperGuard to lock/unlock the model during a block of
    instructions.
 */
class ControllerLockHelper
{
public:
    explicit ControllerLockHelper(rtl::Reference<::chart::ChartModel> xModel);
    ~ControllerLockHelper();

    void lockControllers();
    void unlockControllers();

private:
    rtl::Reference<::chart::ChartModel> m_xModel;
};

/** This guard calls lockControllers at the given ControllerLockHelper in the
    CTOR and unlockControllers in the DTOR.  Using this ensures that controllers
    do not remain locked when leaving a function even in case an exception is
    thrown.
 */
class ControllerLockHelperGuard
{
public:
    explicit ControllerLockHelperGuard(ControllerLockHelper& rHelper);
    ~ControllerLockHelperGuard();

private:
    ControllerLockHelper& m_rHelper;
};

} //  namespace chart

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