gecko-dev/lib/libmsg/chngntfy.h
1998-06-22 22:39:40 +00:00

68 lines
2.7 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef _ChngNtfy_H_
#define _ChngNtfy_H_
#include "ptrarray.h"
class ChangeListener;
class MessageDBView;
class ChangeAnnouncer : public XPPtrArray // array of ChangeListeners
{
public:
ChangeAnnouncer();
virtual ~ChangeAnnouncer();
virtual XP_Bool AddListener(ChangeListener *listener);
virtual XP_Bool RemoveListener(ChangeListener *listener);
// convenience routines to notify all our ChangeListeners
void NotifyViewChangeAll(MSG_ViewIndex startIndex, int32 numChanged,
MSG_NOTIFY_CODE changeType, ChangeListener *instigator);
void NotifyViewStartChangeAll(MSG_ViewIndex startIndex, int32 numChanged,
MSG_NOTIFY_CODE changeType, ChangeListener *instigator);
void NotifyViewEndChangeAll(MSG_ViewIndex startIndex, int32 numChanged,
MSG_NOTIFY_CODE changeType, ChangeListener *instigator);
void NotifyKeyChangeAll(MessageKey keyChanged, int32 flags,
ChangeListener *instigator);
void NotifyAnnouncerGoingAway(ChangeAnnouncer *instigator);
void NotifyAnnouncerChangingView(ChangeAnnouncer *instigator, MessageDBView *newView);
};
class ChangeListener
{
public:
ChangeListener();
virtual ~ChangeListener();
// do nothing notification routines - subclass to do something.
// New notification routines need to be added here as do nothing routines
virtual void OnViewChange(MSG_ViewIndex /*startInd*/, int32 /*numChanged*/,
MSG_NOTIFY_CODE /* changeType */, ChangeListener * /*instigator*/);
virtual void OnViewStartChange(MSG_ViewIndex /*startInd*/, int32 /*numChanged*/,
MSG_NOTIFY_CODE /* changeType */, ChangeListener * /*instigator*/) ;
virtual void OnViewEndChange(MSG_ViewIndex /*startInd*/, int32 /*numChanged*/,
MSG_NOTIFY_CODE /* changeType */, ChangeListener * /*instigator*/) ;
virtual void OnKeyChange(MessageKey /*keyChanged*/, int32 /*flags*/,
ChangeListener * /*instigator*/) ;
virtual void OnAnnouncerGoingAway(ChangeAnnouncer * /*instigator*/) ;
virtual void OnAnnouncerChangingView(ChangeAnnouncer * /* instigator */, MessageDBView * /* view */) ;
};
#endif