8c05219cec
frequently! (it's a two-liner script, but nevertheless...) git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@355 3ecf2c5c-341e-0410-92b4-d18e462d057c
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
// src/backend/observedSubject.cc - Copyright 2005, 2006, University
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// of Padova, dept. of Pure and Applied
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// Mathematics
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//
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// This file is part of SGPEMv2.
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//
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// This is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// SGPEMv2 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 SGPEMv2; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include "observed_subject.hh"
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using namespace std;
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using namespace sgpem;
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ObservedSubject::~ObservedSubject()
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{
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}
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/**
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Calls update() in each Observer
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*/
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void
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ObservedSubject::notify()
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{
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for(vector<Observer*>::iterator i = _attached.begin(); i < _attached.end(); i++)
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(*i)->update();
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}
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/**
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Attachs an Observer to this ObservedSubject.
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*/
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void
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ObservedSubject::attach(Observer* o)
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{
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_attached.push_back(o);
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}
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/**
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Detachs the observer from this ObservedSubject.
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*/
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bool
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ObservedSubject::detach(Observer* o)
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{
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vector<Observer*>::iterator i = find(_attached.begin(), _attached.end(), o);
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if (i == _attached.end())
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return false;
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_attached.erase(i); // FOUND and POPPED
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return true;
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}
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