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diff --git a/src/dm/systems/StudioCoreSystem.h b/src/dm/systems/StudioCoreSystem.h
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+/****************************************************************************
+**
+** Copyright (C) 1993-2009 NVIDIA Corporation.
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#pragma once
+#ifndef STUDIOCORESYSTEMH
+#define STUDIOCORESYSTEMH
+#include "Qt3DSDMTransactions.h"
+#include "Qt3DSDMHandles.h"
+
+namespace qt3dsdm {
+class IDataCore;
+class ISlideCore;
+class ISlideGraphCore;
+class IAnimationCore;
+class IActionCore;
+class ICustomPropCore;
+class ISignalConnection;
+class IMetaData;
+class IGuideSystem;
+
+// Manages cascading operations between cores so that the entire group of
+// cores stays up to date.
+class CStudioCoreSystem : public ITransactionProducer
+{
+    Q_DISABLE_COPY(CStudioCoreSystem)
+
+    TStringTablePtr m_StringTable;
+    std::shared_ptr<IDataCore> m_DataCore;
+    std::shared_ptr<ISlideCore> m_SlideCore;
+    std::shared_ptr<ISlideGraphCore> m_SlideGraphCore;
+    std::shared_ptr<IAnimationCore> m_AnimationCore;
+    std::shared_ptr<IActionCore> m_ActionCore;
+    std::shared_ptr<ICustomPropCore> m_CustomPropCore;
+    std::shared_ptr<IMetaData> m_NewMetaData;
+    std::shared_ptr<IGuideSystem> m_GuideSystem;
+
+    std::vector<std::shared_ptr<ISignalConnection>> m_Connections;
+
+public:
+    CStudioCoreSystem(TStringTablePtr strTable = TStringTablePtr());
+    virtual ~CStudioCoreSystem();
+    TStringTablePtr GetStringTablePtr() const { return m_StringTable; }
+
+    std::shared_ptr<IDataCore> GetDataCore();
+    std::shared_ptr<ISlideCore> GetSlideCore();
+    std::shared_ptr<ISlideGraphCore> GetSlideGraphCore();
+    std::shared_ptr<IAnimationCore> GetAnimationCore();
+    std::shared_ptr<IActionCore> GetActionCore();
+    std::shared_ptr<ICustomPropCore> GetCustomPropCore();
+    std::shared_ptr<IMetaData> GetNewMetaData();
+    std::shared_ptr<IGuideSystem> GetGuideSystem();
+
+    std::shared_ptr<IDataCore> GetTransactionlessDataCore();
+    std::shared_ptr<ISlideCore> GetTransactionlessSlideCore();
+    std::shared_ptr<ISlideGraphCore> GetTransactionlessSlideGraphCore();
+    std::shared_ptr<IAnimationCore> GetTransactionlessAnimationCore();
+    std::shared_ptr<IActionCore> GetTransactionlessActionCore();
+    std::shared_ptr<ICustomPropCore> GetTransactionlessCustomPropCore();
+
+    Qt3DSDMInstanceHandle FindInstanceByName(Qt3DSDMPropertyHandle inNameProperty,
+                                            const TCharStr &inName) const;
+
+    void SetConsumer(TTransactionConsumerPtr inConsumer) override;
+};
+
+typedef std::shared_ptr<CStudioCoreSystem> TStudioCoreSystemPtr;
+}
+
+#endif