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/****************************************************************************
**
** Copyright (C) 2013 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** 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 QT3DS_STATE_EDITOR_TRANSACTION_IMPL_H
#define QT3DS_STATE_EDITOR_TRANSACTION_IMPL_H
#include "Qt3DSStateEditor.h"
#include "Qt3DSStateEditorFoundation.h"
#include "Qt3DSStateEditorProperties.h"
namespace qt3ds {
namespace state {
namespace editor {
class IChange : public NVRefCounted
{
protected:
virtual ~IChange() {}
public:
virtual void Do() = 0;
virtual void Undo() = 0;
virtual TObjPtr GetEditor() = 0;
};
typedef eastl::vector<NVScopedRefCounted<IChange>> TChangeList;
struct SChange : public IChange
{
Option<SValue> m_OldVal;
Option<SValue> m_NewVal;
TPropertyAccessorPtr m_Accessor;
TObjPtr m_Editor;
QT3DSI32 mRefCount;
SChange(const Option<SValue> &inOldVal, const Option<SValue> &inNewVal,
IPropertyAccessor &inAccessor, IEditorObject &inEditor)
: m_OldVal(inOldVal)
, m_NewVal(inNewVal)
, m_Accessor(inAccessor)
, m_Editor(inEditor)
, mRefCount(0)
{
}
// Sometimes we need to create a change just to signal a new object.
// In this case there isn't an accessor and there aren't old values and
// new values.
SChange(IEditorObject &inEditor)
: m_Editor(inEditor)
, mRefCount(0)
{
}
SChange()
: mRefCount(0)
{
}
void Do()
{
if (m_Accessor)
m_Accessor->Set(*m_Editor, m_NewVal);
}
void Undo()
{
if (m_Accessor)
m_Accessor->Set(*m_Editor, m_OldVal);
}
void addRef() { atomicIncrement(&mRefCount); }
void release()
{
atomicDecrement(&mRefCount);
if (mRefCount <= 0)
delete this;
}
TObjPtr GetEditor() { return m_Editor; }
};
// true if removed on do, false if removed on false;
typedef eastl::pair<bool, TObjPtr> TRemovePair;
typedef eastl::vector<TRemovePair> TRemovePairList;
struct STransactionManagerImpl;
struct STransaction : public ITransaction
{
TFoundationPtr m_Alloc;
TChangeList m_Changes;
volatile QT3DSI32 mRefCount;
// We have to keep a refcount to the editor ourselves.
NVScopedRefCounted<STransactionManagerImpl> m_Editor;
TObjList m_EditorsList;
TObjList m_RemovedEditorsList;
TRemovePairList m_RemovedPairs;
STransaction(TFoundationPtr alloc, STransactionManagerImpl &inEditor,
const TEditorStr &inName);
virtual ~STransaction();
virtual void addRef();
virtual void release();
void CreateRemovedEditorsList(bool inDo)
{
m_RemovedEditorsList.clear();
for (TRemovePairList::iterator iter = m_RemovedPairs.begin(),
end = m_RemovedPairs.end();
iter != end; ++iter)
if (iter->first == inDo)
m_RemovedEditorsList.push_back(iter->second);
}
struct SChangeToEditor
{
TObjPtr operator()(IChange *inChange) const { return inChange->GetEditor(); }
};
virtual void SendDoSignals();
virtual void Do();
virtual void SilentUndo();
virtual void Undo();
virtual bool Empty() { return m_Changes.empty() && m_RemovedPairs.empty(); }
virtual TObjList GetEditedObjects()
{
ChangesToEditors();
return m_EditorsList;
}
void ChangesToEditors();
};
class ITransManagerImplListener
{
protected:
virtual ~ITransManagerImplListener() {}
public:
virtual void OnObjectDeleted(TObjPtr inObj) = 0;
virtual void OnObjectCreated(TObjPtr inObj) = 0;
};
struct STransactionManagerImpl : public ITransactionManager
{
TFoundationPtr m_EditorFoundation;
volatile QT3DSI32 mRefCount;
TChangeListenerList m_ChangeListeners;
NVScopedRefCounted<STransaction> m_Transaction;
QT3DSI32 m_OpenCount;
ITransManagerImplListener *m_ObjListener;
STransactionManagerImpl(TFoundationPtr fnd)
: m_EditorFoundation(fnd)
, mRefCount(0)
, m_OpenCount(0)
, m_ObjListener(NULL)
{
}
virtual void addRef();
virtual void release();
virtual TSignalConnectionPtr AddChangeListener(IEditorChangeListener &inListener);
virtual TTransactionPtr BeginTransaction(const TEditorStr &inName = TEditorStr());
virtual TTransactionPtr GetOpenTransaction();
STransaction *GetOpenTransactionImpl();
virtual void RollbackTransaction();
virtual void EndTransaction();
void OnObjectDeleted(TObjPtr inObj);
void OnObjectCreated(TObjPtr inObj);
void RemoveChangeListener(IEditorChangeListener &inListener);
};
}
}
}
#endif
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