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connection.cpp
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connection.cpp
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// -*- c++ -*-
/*
Copyright 2000, Karl Einar Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "sigc++/connection.h"
#ifdef SIGC_CXX_NAMESPACES
namespace SigC
{
#endif
ConnectionNode::~ConnectionNode()
{
if (!notified_)
slot()->remove_dependency(this);
}
ConnectionNode::ConnectionNode(SlotNode* s)
: NodeBase(), slot_(s)
{
if (s) slot()->add_dependency(this);
}
NodeBase::Link* ConnectionNode::link()
{
return &link_;
}
bool ConnectionNode::block(bool should_block)
{
bool old = bool(blocked_);
blocked_ = should_block;
return old;
}
void ConnectionNode::notify(bool from_child)
{
blocked_ = true;
if(!from_child && !notified_)
slot()->remove_dependency(this);
slot_.clear();
NodeBase::notify(from_child);
}
/*************************************************/
void Connection::disconnect()
{
if (node_)
obj()->notify(false); //false = not from_child.
clear();
}
bool Connection::blocked() const
{
if (!valid())
return false;
return obj()->blocked();
}
bool Connection::block(bool should_block)
{
if (!valid())
return false;
return obj()->block(should_block);
}
#ifdef SIGC_CXX_NAMESPACES
}
#endif

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