mirror of https://github.com/PCSX2/pcsx2.git
91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
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* Copyright (C) 2002-2009 PCSX2 Dev Team
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*
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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// Checks for duplicates before adding the event.
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template< typename EvtType >
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void EventSource<EvtType>::Add( const ListenerType& listener )
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{
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if( !pxAssertDev( listener.OnEvent != NULL, "NULL listener callback function." ) ) return;
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Handle iter = m_listeners.begin();
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while( iter != m_listeners.end() )
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{
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if( *iter == listener ) return;
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++iter;
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}
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AddFast( listener );
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}
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template< typename EvtType >
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class PredicatesAreTheThingsOfNightmares
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{
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typedef EventListener< EvtType > ListenerType;
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protected:
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const void* const m_object_match;
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public:
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PredicatesAreTheThingsOfNightmares( const void* objmatch ) : m_object_match( objmatch ) { }
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bool operator()( const ListenerType& src ) const
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{
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return src.object == m_object_match;
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}
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};
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// removes all listeners which reference the given object. Use for assuring object deletion.
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template< typename EvtType >
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void EventSource<EvtType>::RemoveObject( const void* object )
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{
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m_cache_valid = false;
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m_listeners.remove_if( PredicatesAreTheThingsOfNightmares<EvtType>( object ) );
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}
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template< typename EvtType >
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__forceinline void EventSource<EvtType>::_DispatchRaw( ConstIterator iter, const ConstIterator& iend, EvtType& evt )
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{
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while( iter != iend )
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{
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try
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{
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iter->OnEvent( iter->object, evt );
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}
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catch( Exception::RuntimeError& ex )
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{
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Console.Error( L"Ignoring runtime error thrown from event listener: " + ex.FormatDiagnosticMessage() );
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}
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catch( Exception::BaseException& ex )
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{
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if( IsDevBuild ) throw;
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Console.Error( L"Ignoring non-runtime BaseException thrown from event listener: " + ex.FormatDiagnosticMessage() );
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}
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++iter;
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}
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}
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template< typename EvtType >
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void EventSource<EvtType>::Dispatch( EvtType& evt )
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{
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if( !m_cache_valid )
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{
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m_cache_copy = m_listeners;
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m_cache_valid = true;
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}
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_DispatchRaw( m_cache_copy.begin(), m_cache_copy.end(), evt );
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}
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