gecko-dev/lib/libmsg/chngntfy.cpp

151 lines
4.4 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 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "msg.h"
#include "chngntfy.h"
ChangeAnnouncer::ChangeAnnouncer()
{
}
ChangeAnnouncer::~ChangeAnnouncer()
{
XP_ASSERT(GetSize() == 0); // better not be any listeners, because we're going away.
}
XP_Bool ChangeAnnouncer::AddListener(ChangeListener *listener)
{
XPPtrArray::Add((void *) listener);
return TRUE;
}
XP_Bool ChangeAnnouncer::RemoveListener(ChangeListener *listener)
{
for (int i = 0; i < GetSize(); i++)
{
if ((ChangeListener *) GetAt(i) == listener)
{
RemoveAt(i);
return TRUE;
}
}
return FALSE;
}
// convenience routines to notify all our ChangeListeners
void ChangeAnnouncer::NotifyViewChangeAll(MSG_ViewIndex startIndex, int32 numChanged,
MSG_NOTIFY_CODE changeType, ChangeListener *instigator)
{
for (int i = 0; i < GetSize(); i++)
{
ChangeListener *changeListener = (ChangeListener *) GetAt(i);
changeListener->OnViewChange(startIndex, numChanged, changeType,
instigator);
}
}
// convenience routines to notify all our ChangeListeners
void ChangeAnnouncer::NotifyViewStartChangeAll(MSG_ViewIndex startIndex, int32 numChanged,
MSG_NOTIFY_CODE changeType, ChangeListener *instigator)
{
for (int i = 0; i < GetSize(); i++)
{
ChangeListener *changeListener = (ChangeListener *) GetAt(i);
changeListener->OnViewStartChange(startIndex, numChanged, changeType,
instigator);
}
}
// convenience routines to notify all our ChangeListeners
void ChangeAnnouncer::NotifyViewEndChangeAll(MSG_ViewIndex startIndex, int32 numChanged,
MSG_NOTIFY_CODE changeType, ChangeListener *instigator)
{
for (int i = 0; i < GetSize(); i++)
{
ChangeListener *changeListener = (ChangeListener *) GetAt(i);
changeListener->OnViewEndChange(startIndex, numChanged, changeType,
instigator);
}
}
void ChangeAnnouncer::NotifyKeyChangeAll(MessageKey keyChanged, int32 flags,
ChangeListener *instigator)
{
for (int i = 0; i < GetSize(); i++)
{
ChangeListener *changeListener = (ChangeListener *) GetAt(i);
changeListener->OnKeyChange(keyChanged, flags, instigator);
}
}
void ChangeAnnouncer::NotifyAnnouncerGoingAway(ChangeAnnouncer *instigator)
{
if (instigator == NULL)
instigator = this; // not sure about this - should listeners even care?
for (int i = 0; i < GetSize(); i++)
{
ChangeListener *changeListener = (ChangeListener *) GetAt(i);
changeListener->OnAnnouncerGoingAway(instigator);
}
}
void ChangeAnnouncer::NotifyAnnouncerChangingView(ChangeAnnouncer *instigator, MessageDBView *newView)
{
if (instigator == NULL)
instigator = this; // not sure about this - should listeners even care?
for (int i = 0; i < GetSize(); i++)
{
ChangeListener *changeListener = (ChangeListener *) GetAt(i);
changeListener->OnAnnouncerChangingView(instigator, newView);
}
}
ChangeListener::ChangeListener()
{
}
ChangeListener::~ChangeListener()
{
}
// virtual inlines...
void ChangeListener::OnViewChange(MSG_ViewIndex /*startInd*/, int32 /*numChanged*/,
MSG_NOTIFY_CODE /* changeType */, ChangeListener * /*instigator*/) {}
void ChangeListener::OnViewStartChange(MSG_ViewIndex /*startInd*/, int32 /*numChanged*/,
MSG_NOTIFY_CODE /* changeType */, ChangeListener * /*instigator*/) {}
void ChangeListener::OnViewEndChange(MSG_ViewIndex /*startInd*/, int32 /*numChanged*/,
MSG_NOTIFY_CODE /* changeType */, ChangeListener * /*instigator*/) {}
void ChangeListener::OnKeyChange(MessageKey /*keyChanged*/, int32 /*flags*/,
ChangeListener * /*instigator*/) {}
void ChangeListener::OnAnnouncerGoingAway(ChangeAnnouncer * /*instigator*/) {}
void ChangeListener::OnAnnouncerChangingView(ChangeAnnouncer * /* instigator */, MessageDBView * /* view */) {}