1 files changed, 79 insertions, 0 deletions
diff --git a/comm/mailnews/local/src/nsLocalUndoTxn.h b/comm/mailnews/local/src/nsLocalUndoTxn.h
new file mode 100644
index 0000000000..f9f8244193
--- /dev/null
+++ b/comm/mailnews/local/src/nsLocalUndoTxn.h
@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 nsLocalUndoTxn_h__
+#define nsLocalUndoTxn_h__
+
+#include "mozilla/Attributes.h"
+#include "msgCore.h"
+#include "nsIMsgFolder.h"
+#include "nsMailboxService.h"
+#include "nsMsgTxn.h"
+#include "MailNewsTypes.h"
+#include "nsTArray.h"
+#include "nsCOMPtr.h"
+#include "nsIFolderListener.h"
+#include "nsIWeakReferenceUtils.h"
+
+class nsLocalUndoFolderListener;
+
+class nsLocalMoveCopyMsgTxn : public nsIFolderListener, public nsMsgTxn {
+ public:
+  nsLocalMoveCopyMsgTxn();
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_NSIFOLDERLISTENER
+
+  // overloading nsITransaction methods
+  NS_IMETHOD UndoTransaction(void) override;
+  NS_IMETHOD RedoTransaction(void) override;
+
+  // helper
+  nsresult AddSrcKey(nsMsgKey aKey);
+  nsresult AddDstKey(nsMsgKey aKey);
+  nsresult AddDstMsgSize(uint32_t msgSize);
+  nsresult SetSrcFolder(nsIMsgFolder* srcFolder);
+  nsresult GetSrcIsImap(bool* isImap);
+  nsresult SetDstFolder(nsIMsgFolder* dstFolder);
+  nsresult Init(nsIMsgFolder* srcFolder, nsIMsgFolder* dstFolder, bool isMove);
+  nsresult UndoImapDeleteFlag(nsIMsgFolder* aFolder,
+                              nsTArray<nsMsgKey>& aKeyArray, bool deleteFlag);
+  nsresult UndoTransactionInternal();
+  // If the store using this undo transaction can "undelete" a message,
+  // it will call this function on the transaction; This makes undo/redo
+  // easy because message keys don't change after undo/redo. Otherwise,
+  // we need to adjust the src or dst keys after every undo/redo action
+  // to note the new keys.
+  void SetCanUndelete(bool canUndelete) { m_canUndelete = canUndelete; }
+
+ private:
+  virtual ~nsLocalMoveCopyMsgTxn();
+  nsWeakPtr m_srcFolder;
+  nsTArray<nsMsgKey> m_srcKeyArray;  // used when src is local or imap
+  nsWeakPtr m_dstFolder;
+  nsTArray<nsMsgKey> m_dstKeyArray;
+  bool m_isMove;
+  bool m_srcIsImap4;
+  bool m_canUndelete;
+  nsTArray<uint32_t> m_dstSizeArray;
+  bool m_undoing;  // if false, re-doing
+  uint32_t m_numHdrsCopied;
+  nsTArray<nsCString> m_copiedMsgIds;
+  nsLocalUndoFolderListener* mUndoFolderListener;
+};
+
+class nsLocalUndoFolderListener : public nsIFolderListener {
+ public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIFOLDERLISTENER
+
+  nsLocalUndoFolderListener(nsLocalMoveCopyMsgTxn* aTxn, nsIMsgFolder* aFolder);
+
+ private:
+  virtual ~nsLocalUndoFolderListener();
+  nsLocalMoveCopyMsgTxn* mTxn;
+  nsIMsgFolder* mFolder;
+};
+
+#endif