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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 nsTransactionItem_h__
#define nsTransactionItem_h__
#include "nsCOMPtr.h"
#include "nsCOMArray.h"
#include "nsCycleCollectionParticipant.h"
#include "nsISupportsImpl.h"
#include "nscore.h"
class nsITransaction;
class nsTransactionManager;
class nsTransactionStack;
class nsTransactionItem final
{
nsCOMArray<nsISupports> mData;
nsCOMPtr<nsITransaction> mTransaction;
nsTransactionStack *mUndoStack;
nsTransactionStack *mRedoStack;
public:
explicit nsTransactionItem(nsITransaction *aTransaction);
NS_METHOD_(MozExternalRefCountType) AddRef();
NS_METHOD_(MozExternalRefCountType) Release();
NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(nsTransactionItem)
virtual nsresult AddChild(nsTransactionItem *aTransactionItem);
already_AddRefed<nsITransaction> GetTransaction();
virtual nsresult GetIsBatch(bool *aIsBatch);
virtual nsresult GetNumberOfChildren(int32_t *aNumChildren);
virtual nsresult GetChild(int32_t aIndex, nsTransactionItem **aChild);
virtual nsresult DoTransaction(void);
virtual nsresult UndoTransaction(nsTransactionManager *aTxMgr);
virtual nsresult RedoTransaction(nsTransactionManager *aTxMgr);
nsCOMArray<nsISupports>& GetData()
{
return mData;
}
private:
virtual nsresult UndoChildren(nsTransactionManager *aTxMgr);
virtual nsresult RedoChildren(nsTransactionManager *aTxMgr);
virtual nsresult RecoverFromUndoError(nsTransactionManager *aTxMgr);
virtual nsresult RecoverFromRedoError(nsTransactionManager *aTxMgr);
virtual nsresult GetNumberOfUndoItems(int32_t *aNumItems);
virtual nsresult GetNumberOfRedoItems(int32_t *aNumItems);
void CleanUp();
protected:
virtual ~nsTransactionItem();
nsCycleCollectingAutoRefCnt mRefCnt;
NS_DECL_OWNINGTHREAD
};
#endif // nsTransactionItem_h__
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