File indexing completed on 2024-05-19 13:30:29
0001 /* 0002 Copyright (C) 2018 Andreas Hartmetz <ahartmetz@gmail.com> 0003 0004 This library is free software; you can redistribute it and/or 0005 modify it under the terms of the GNU Library General Public 0006 License as published by the Free Software Foundation; either 0007 version 2 of the License, or (at your option) any later version. 0008 0009 This library is distributed in the hope that it will be useful, 0010 but WITHOUT ANY WARRANTY; without even the implied warranty of 0011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 0012 Library General Public License for more details. 0013 0014 You should have received a copy of the GNU Library General Public License 0015 along with this library; see the file COPYING.LGPL. If not, write to 0016 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 0017 Boston, MA 02110-1301, USA. 0018 0019 Alternatively, this file is available under the Mozilla Public License 0020 Version 1.1. You may obtain a copy of the License at 0021 http://www.mozilla.org/MPL/ 0022 */ 0023 0024 #include "iioeventsource.h" 0025 0026 #include "iioeventlistener.h" 0027 0028 #include <cassert> 0029 0030 IIoEventSource::~IIoEventSource() 0031 { 0032 // ### we would like to tell all listeners they are unsubscribed here, but we "are" only 0033 // the base class at this point, so it can't be done here. 0034 } 0035 0036 void IIoEventSource::addIoListener(IIoEventListener *iol) 0037 { 0038 if (iol->m_eventSource && iol->m_eventSource != this) { 0039 iol->m_eventSource->removeIoListener(iol); 0040 } 0041 assert(iol->m_eventSource == nullptr); 0042 iol->m_eventSource = this; 0043 addIoListenerInternal(iol, iol->m_ioInterest); 0044 } 0045 0046 void IIoEventSource::removeIoListener(IIoEventListener *iol) 0047 { 0048 if (iol->m_eventSource != this) { 0049 return; // warning? 0050 } 0051 iol->m_eventSource = nullptr; 0052 removeIoListenerInternal(iol); 0053 } 0054 0055 void IIoEventSource::updateIoInterest(IIoEventListener *iol) 0056 { 0057 if (iol->m_eventSource != this) { 0058 return; // warning? 0059 } 0060 updateIoInterestInternal(iol, iol->m_ioInterest); 0061 } 0062 0063 void IIoEventSource::addIoListenerInternal(IIoEventListener *iol, uint32 ioRw) 0064 { 0065 updateIoInterestInternal(iol, ioRw); 0066 } 0067 0068 void IIoEventSource::removeIoListenerInternal(IIoEventListener *iol) 0069 { 0070 updateIoInterestInternal(iol, 0); 0071 }