зеркало из https://github.com/mozilla/gecko-dev.git
70 строки
2.2 KiB
C
70 строки
2.2 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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/* This file is obsolete
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msgundo.h --- internal defs for the msg library, dealing with undo stuff
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*/
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#ifndef _MSGUNDO_H_
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#define _MSGUNDO_H_
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XP_BEGIN_PROTOS
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/* Initialize the undo state. This must be called when the context is
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initialized for mail/news. It should also be called later whenever
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the undo state should be thrown away (because the user has just
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done an non-undoable operation. If this returns a negative value,
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then we failed big-time (ran out of memory), and we should abort
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everything.*/
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extern int msg_undo_Initialize(MWContext* context);
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/* Throw away the undo state, as part of destroying the mail/news context. */
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extern void msg_undo_Cleanup(MWContext* context);
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/* Log an "flag change" event. The given flag bits indicate what to do to
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execute the undo. */
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extern void msg_undo_LogFlagChange(MWContext* context, MSG_Folder* folder,
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unsigned int message_offset,
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uint16 flagson, uint16 flagsoff);
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/* Mark the beginning of a bunch of actions that should be undone as
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one user action. Should always be matched by a later call to
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msg_undo_EndBatch(). These calls can nest. */
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extern void msg_undo_StartBatch(MWContext* context);
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extern void msg_undo_EndBatch(MWContext* context);
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extern XP_Bool msg_CanUndo(MWContext* context);
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extern XP_Bool msg_CanRedo(MWContext* context);
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XP_END_PROTOS
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#endif /* !_MSGUNDO_H_ */
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