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impdel.hxx
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_VCL_IMPDEL_HXX
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#define INCLUDED_VCL_IMPDEL_HXX
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#include <algorithm>
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#include <vector>
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namespace
vcl
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{
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class
DeletionListener;
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class
DeletionNotifier
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{
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std::vector< DeletionListener* >
m_aListeners
;
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protected
:
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DeletionNotifier
() {}
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~DeletionNotifier
()
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{
notifyDelete
(); }
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inline
void
notifyDelete
();
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public
:
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void
addDel
(
DeletionListener
* pListener )
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{ m_aListeners.push_back( pListener ); }
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void
removeDel
(
DeletionListener
* pListener )
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{ m_aListeners.erase(std::remove(m_aListeners.begin(), m_aListeners.end(), pListener), m_aListeners.end()); }
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};
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class
DeletionListener
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{
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DeletionNotifier
*
m_pNotifier
;
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public
:
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DeletionListener
(
DeletionNotifier
* pNotifier )
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: m_pNotifier( pNotifier )
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{
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if
( m_pNotifier )
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m_pNotifier->
addDel
(
this
);
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}
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~DeletionListener
()
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{
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if
( m_pNotifier )
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m_pNotifier->
removeDel
(
this
);
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}
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void
deleted
() { m_pNotifier =
nullptr
; }
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bool
isDeleted
()
const
{
return
(m_pNotifier ==
nullptr
); }
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};
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inline
void
DeletionNotifier::notifyDelete
()
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{
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for
(
auto
& rListener :
m_aListeners
)
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rListener->deleted();
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m_aListeners.clear();
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}
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}
// namespace vcl
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#endif // INCLUDED_VCL_IMPDEL_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
vcl
vcl::DeletionNotifier::m_aListeners
std::vector< DeletionListener * > m_aListeners
Definition:
impdel.hxx:33
vcl::DeletionNotifier::DeletionNotifier
DeletionNotifier()
Definition:
impdel.hxx:35
vcl::DeletionListener::DeletionListener
DeletionListener(DeletionNotifier *pNotifier)
Definition:
impdel.hxx:54
vcl::DeletionNotifier
Definition:
impdel.hxx:31
vcl::DeletionListener::~DeletionListener
~DeletionListener()
Definition:
impdel.hxx:60
vcl::DeletionNotifier::~DeletionNotifier
~DeletionNotifier()
Definition:
impdel.hxx:37
vcl::DeletionNotifier::notifyDelete
void notifyDelete()
Definition:
impdel.hxx:69
vcl::DeletionListener
Definition:
impdel.hxx:50
vcl::DeletionListener::deleted
void deleted()
Definition:
impdel.hxx:65
vcl::DeletionListener::isDeleted
bool isDeleted() const
Definition:
impdel.hxx:66
vcl::DeletionNotifier::addDel
void addDel(DeletionListener *pListener)
Definition:
impdel.hxx:43
vcl::DeletionListener::m_pNotifier
DeletionNotifier * m_pNotifier
Definition:
impdel.hxx:52
vcl::DeletionNotifier::removeDel
void removeDel(DeletionListener *pListener)
Definition:
impdel.hxx:46
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