The Tor Browser: editor/txmgr/src/nsTransactionManager.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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/. */

     6 #ifndef nsTransactionManager_h__

     7 #define nsTransactionManager_h__

     9 #include "nsCOMArray.h"

    10 #include "nsCOMPtr.h"

    11 #include "nsCycleCollectionParticipant.h"

    12 #include "nsTransactionStack.h"

    13 #include "nsISupportsImpl.h"

    14 #include "nsITransactionManager.h"

    15 #include "nsTransactionStack.h"

    16 #include "nsWeakReference.h"

    17 #include "nscore.h"

    19 class nsITransaction;

    20 class nsITransactionListener;

    21 class nsTransactionItem;

    23 /** implementation of a transaction manager object.

    24  *

    25  */

    26 class nsTransactionManager : public nsITransactionManager

    27                            , public nsSupportsWeakReference

    28 {

    29 private:

    31   int32_t                mMaxTransactionCount;

    32   nsTransactionStack     mDoStack;

    33   nsTransactionStack     mUndoStack;

    34   nsTransactionStack     mRedoStack;

    35   nsCOMArray<nsITransactionListener> mListeners;

    37 public:

    39   /** The default constructor.

    40    */

    41   nsTransactionManager(int32_t aMaxTransactionCount=-1);

    43   /** The default destructor.

    44    */

    45   virtual ~nsTransactionManager();

    47   /* Macro for AddRef(), Release(), and QueryInterface() */

    48   NS_DECL_CYCLE_COLLECTING_ISUPPORTS

    49   NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsTransactionManager,

    50                                            nsITransactionManager)

    52   /* nsITransactionManager method implementations. */

    53   NS_DECL_NSITRANSACTIONMANAGER

    55   already_AddRefed<nsITransaction> PeekUndoStack();

    56   already_AddRefed<nsITransaction> PeekRedoStack();

    58   virtual nsresult WillDoNotify(nsITransaction *aTransaction, bool *aInterrupt);

    59   virtual nsresult DidDoNotify(nsITransaction *aTransaction, nsresult aExecuteResult);

    60   virtual nsresult WillUndoNotify(nsITransaction *aTransaction, bool *aInterrupt);

    61   virtual nsresult DidUndoNotify(nsITransaction *aTransaction, nsresult aUndoResult);

    62   virtual nsresult WillRedoNotify(nsITransaction *aTransaction, bool *aInterrupt);

    63   virtual nsresult DidRedoNotify(nsITransaction *aTransaction, nsresult aRedoResult);

    64   virtual nsresult WillBeginBatchNotify(bool *aInterrupt);

    65   virtual nsresult DidBeginBatchNotify(nsresult aResult);

    66   virtual nsresult WillEndBatchNotify(bool *aInterrupt);

    67   virtual nsresult DidEndBatchNotify(nsresult aResult);

    68   virtual nsresult WillMergeNotify(nsITransaction *aTop,

    69                                    nsITransaction *aTransaction,

    70                                    bool *aInterrupt);

    71   virtual nsresult DidMergeNotify(nsITransaction *aTop,

    72                                   nsITransaction *aTransaction,

    73                                   bool aDidMerge,

    74                                   nsresult aMergeResult);

    76 private:

    78   /* nsTransactionManager specific private methods. */

    79   virtual nsresult BeginTransaction(nsITransaction *aTransaction,

    80                                     nsISupports *aData);

    81   virtual nsresult EndTransaction(bool aAllowEmpty);

    82 };

    84 #endif // nsTransactionManager_h__

The Tor Browser / file revision

editor/txmgr/src/nsTransactionManager.h@97036ab72558

editor/txmgr/src/nsTransactionManager.h