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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 TransactionItem_h
#define TransactionItem_h
#include "nsCOMPtr.h"
#include "nsCOMArray.h"
#include "nsCycleCollectionParticipant.h"
#include "nsISupportsImpl.h"
#include "nscore.h"
class nsITransaction;
namespace mozilla {
class TransactionManager;
class TransactionStack;
class TransactionItem final {
public:
explicit TransactionItem(nsITransaction* aTransaction);
NS_METHOD_(MozExternalRefCountType) AddRef();
NS_METHOD_(MozExternalRefCountType) Release();
NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(TransactionItem)
nsresult AddChild(TransactionItem& aTransactionItem);
already_AddRefed<nsITransaction> GetTransaction();
size_t NumberOfChildren() const {
return NumberOfUndoItems() + NumberOfRedoItems();
}
nsresult GetChild(size_t aIndex, TransactionItem** aChild);
MOZ_CAN_RUN_SCRIPT nsresult DoTransaction();
MOZ_CAN_RUN_SCRIPT nsresult
UndoTransaction(TransactionManager* aTransactionManager);
MOZ_CAN_RUN_SCRIPT nsresult
RedoTransaction(TransactionManager* aTransactionManager);
nsCOMArray<nsISupports>& GetData() { return mData; }
private:
MOZ_CAN_RUN_SCRIPT nsresult
UndoChildren(TransactionManager* aTransactionManager);
MOZ_CAN_RUN_SCRIPT nsresult
RedoChildren(TransactionManager* aTransactionManager);
MOZ_CAN_RUN_SCRIPT nsresult
RecoverFromUndoError(TransactionManager* aTransactionManager);
MOZ_CAN_RUN_SCRIPT nsresult
RecoverFromRedoError(TransactionManager* aTransactionManager);
size_t NumberOfUndoItems() const;
size_t NumberOfRedoItems() const;
void CleanUp();
~TransactionItem();
nsCycleCollectingAutoRefCnt mRefCnt;
NS_DECL_OWNINGTHREAD
nsCOMArray<nsISupports> mData;
nsCOMPtr<nsITransaction> mTransaction;
TransactionStack* mUndoStack;
TransactionStack* mRedoStack;
};
} // namespace mozilla
#endif // #ifndef TransactionItem_h
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