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72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
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// -*- c++ -*-
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/*
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* Copyright 1999 Karl Nelson <kenelson@ece.ucdavis.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <sigc++/basic_signal.h>
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#ifdef SIGC_CXX_NAMESPACES
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namespace SigC
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{
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#endif //SIGC_CXX_NAMESPACES
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Signal_::Impl::Impl():incoming_(),outgoing_() {}
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Signal_::Impl::~Impl() {}
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Signal_::Signal_()
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:impl(0)
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{}
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Signal_::~Signal_()
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{
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delete impl;
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}
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bool Signal_::empty() const
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{
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return (!impl||impl->outgoing_.empty());
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}
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void Signal_::clear()
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{
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if (impl)
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impl->outgoing_.clear();
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}
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SlotData* Signal_::out_connect(SlotData *sd)
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{
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// we now reference the object
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sd->connect();
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// insert in list
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if (!impl) impl=new Impl();
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impl->outgoing_.insert_direct(impl->outgoing_.begin(),sd->sender());
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return sd;
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}
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SlotData* Signal_::in_connect()
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{
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SlotData* sd=manage(new SlotData());
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if (!impl) impl=new Impl();
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impl->incoming_.insert_direct(impl->incoming_.end(),sd->receiver());
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return sd;
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}
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#ifdef SIGC_CXX_NAMESPACES
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} // namespace
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#endif
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