Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef nsTransactionItem_h__
       7             : #define nsTransactionItem_h__
       8             : 
       9             : #include "nsCOMPtr.h"
      10             : #include "nsCOMArray.h"
      11             : #include "nsCycleCollectionParticipant.h"
      12             : #include "nsISupportsImpl.h"
      13             : #include "nscore.h"
      14             : 
      15             : class nsITransaction;
      16             : class nsTransactionManager;
      17             : class nsTransactionStack;
      18             : 
      19             : class nsTransactionItem final
      20             : {
      21             :   nsCOMArray<nsISupports>  mData;
      22             :   nsCOMPtr<nsITransaction> mTransaction;
      23             :   nsTransactionStack      *mUndoStack;
      24             :   nsTransactionStack      *mRedoStack;
      25             : 
      26             : public:
      27             : 
      28             :   explicit nsTransactionItem(nsITransaction *aTransaction);
      29             :   NS_METHOD_(MozExternalRefCountType) AddRef();
      30             :   NS_METHOD_(MozExternalRefCountType) Release();
      31             : 
      32          24 :   NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(nsTransactionItem)
      33             : 
      34             :   virtual nsresult AddChild(nsTransactionItem *aTransactionItem);
      35             :   already_AddRefed<nsITransaction> GetTransaction();
      36             :   virtual nsresult GetIsBatch(bool *aIsBatch);
      37             :   virtual nsresult GetNumberOfChildren(int32_t *aNumChildren);
      38             :   virtual nsresult GetChild(int32_t aIndex, nsTransactionItem **aChild);
      39             : 
      40             :   virtual nsresult DoTransaction(void);
      41             :   virtual nsresult UndoTransaction(nsTransactionManager *aTxMgr);
      42             :   virtual nsresult RedoTransaction(nsTransactionManager *aTxMgr);
      43             : 
      44           0 :   nsCOMArray<nsISupports>& GetData()
      45             :   {
      46           0 :     return mData;
      47             :   }
      48             : 
      49             : private:
      50             : 
      51             :   virtual nsresult UndoChildren(nsTransactionManager *aTxMgr);
      52             :   virtual nsresult RedoChildren(nsTransactionManager *aTxMgr);
      53             : 
      54             :   virtual nsresult RecoverFromUndoError(nsTransactionManager *aTxMgr);
      55             :   virtual nsresult RecoverFromRedoError(nsTransactionManager *aTxMgr);
      56             : 
      57             :   virtual nsresult GetNumberOfUndoItems(int32_t *aNumItems);
      58             :   virtual nsresult GetNumberOfRedoItems(int32_t *aNumItems);
      59             : 
      60             :   void CleanUp();
      61             : protected:
      62             :   virtual ~nsTransactionItem();
      63             : 
      64             :   nsCycleCollectingAutoRefCnt mRefCnt;
      65             :   NS_DECL_OWNINGTHREAD
      66             : };
      67             : 
      68             : #endif // nsTransactionItem_h__