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diff --git a/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/KeyframeManager.h b/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/KeyframeManager.h
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+/****************************************************************************
+**
+** Copyright (C) 2018 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef KEYFRAMEMANAGER_H
+#define KEYFRAMEMANAGER_H
+
+#include "IKeyframesManager.h"
+#include "Qt3DSDMAnimation.h"
+#include <QtCore/qlist.h>
+#include <StudioObjectTypes.h>
+
+class RowTimeline;
+class RowTree;
+class TimelineGraphicsScene;
+class CPasteKeyframeCommandHelper;
+struct Keyframe;
+
+QT_FORWARD_DECLARE_CLASS(QGraphicsSceneContextMenuEvent)
+QT_FORWARD_DECLARE_CLASS(QRectF)
+
+class KeyframeManager : public IKeyframesManager
+{
+public:
+    KeyframeManager(TimelineGraphicsScene *m_scene);
+    virtual ~KeyframeManager() override;
+
+    QList<Keyframe *> insertKeyframe(RowTimeline *row, long time,
+                                     bool selectInsertedKeyframes = true);
+    void selectKeyframe(Keyframe *keyframe);
+    void selectConnectedKeyframes(Keyframe *keyframe);
+    void selectKeyframesInRect(const QRectF &rect);
+    void selectKeyframes(const QList<Keyframe *> &keyframes);
+    QList<Keyframe *> selectedKeyframes() const;
+    void deselectKeyframe(Keyframe *keyframe);
+    void deselectConnectedKeyframes(Keyframe *keyframe);
+    void deselectAllKeyframes();
+    void deselectRowKeyframes(RowTree *row);
+    void deleteKeyframes(RowTimeline *row, bool repaint = true);
+    void copySelectedKeyframes();
+    void pasteKeyframes();
+    void moveSelectedKeyframes(long newTime);
+    void commitMoveSelectedKeyframes();
+    bool deleteSelectedKeyframes();
+    bool oneMasterRowSelected() const;
+    bool hasSelectedKeyframes() const;
+    bool hasCopiedKeyframes() const;
+    bool hasDynamicKeyframes(RowTree *row) const;
+
+    // IKeyframesManager interface
+    void SetKeyframeTime(long inTime) override;
+    void SetKeyframesDynamic(bool inDynamic) override;
+    void CommitChangedKeyframes() override;
+    void RollbackChangedKeyframes() override;
+    bool HasSelectedKeyframes() const override;
+    bool HasDynamicKeyframes() const override;
+    bool CanPerformKeyframeCopy() const override;
+    bool CanPerformKeyframePaste() const override;
+    bool canSetKeyframeInterpolation() const override;
+    void CopyKeyframes() override;
+    bool RemoveKeyframes(bool inPerformCopy) override;
+    void PasteKeyframes() override;
+    void SetKeyframeInterpolation() override;
+    void DeselectAllKeyframes() override;
+    void SetChangedKeyframes() override;
+    long getPressedKeyframeOffset() const;
+
+private:
+    qt3dsdm::SGetOrSetKeyframeInfo setKeyframeInfo(qt3dsdm::Qt3DSDMKeyframeHandle keyframeHandle,
+                                                   qt3dsdm::IAnimationCore &animCore);
+    long getMinSelectedKeyframesTime() const;
+
+    CPasteKeyframeCommandHelper *m_pasteKeyframeCommandHelper = nullptr;
+    TimelineGraphicsScene *m_scene = nullptr;
+    QList<Keyframe *> m_selectedKeyframes;
+    QList<RowTimeline *> m_selectedKeyframesMasterRows;
+};
+
+#endif // KEYFRAMEMANAGER_H