mirror of https://github.com/Icinga/icinga2.git
93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* 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 *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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******************************************************************************/
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#ifndef EVENT_H
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#define EVENT_H
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namespace icinga
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{
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struct I2_BASE_API EventArgs
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{
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Object::Ptr Source;
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};
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template<class TArgs>
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class Event
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{
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public:
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typedef function<int (const TArgs&)> DelegateType;
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private:
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vector<DelegateType> m_Delegates;
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public:
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/**
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* operator +=
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*
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* Adds a delegate to this event.
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*
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* @param rhs The delegate.
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*/
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Event<TArgs>& operator +=(const DelegateType& rhs)
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{
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m_Delegates.push_back(rhs);
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return *this;
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}
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/**
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* operator -=
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*
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* Removes a delegate from this event.
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*
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* @param rhs The delegate.
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*/
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Event<TArgs>& operator -=(const DelegateType& rhs)
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{
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m_Delegates.erase(rhs);
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return *this;
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}
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/**
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* operator ()
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*
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* Invokes each delegate that is registered for this event. Any delegates
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* which return -1 are removed.
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*
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* @param args Event arguments.
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*/
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void operator()(const TArgs& args)
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{
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typename vector<DelegateType>::iterator i;
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for (i = m_Delegates.begin(); i != m_Delegates.end(); ) {
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int result = (*i)(args);
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if (result == -1)
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i = m_Delegates.erase(i);
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else
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i++;
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}
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}
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};
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}
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#endif /* EVENT_H */
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