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// -*- c++ -*-
/* $Id$ */
/* signalproxy.cc
*
* Copyright (C) 2002 The gtkmm Development Team
*
* 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 2.1 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <glib-object.h>
#include <glibmm/exceptionhandler.h>
#include <glibmm/object.h>
#include <glibmm/signalproxy.h>
namespace Glib
{
// SignalProxyBase implementation:
SignalProxyBase::SignalProxyBase(Glib::ObjectBase* obj)
:
obj_ (obj)
{}
// SignalProxyNormal implementation:
SignalProxyNormal::SignalProxyNormal(Glib::ObjectBase* obj, const SignalProxyInfo* info)
:
SignalProxyBase (obj),
info_ (info)
{}
SignalProxyNormal::~SignalProxyNormal()
{}
sigc::slot_base&
SignalProxyNormal::connect_(const sigc::slot_base& slot, bool after)
{
return connect_impl_(info_->callback, slot, after);
}
sigc::slot_base&
SignalProxyNormal::connect_notify_(const sigc::slot_base& slot, bool after)
{
return connect_impl_(info_->notify_callback, slot, after);
}
sigc::slot_base&
SignalProxyNormal::connect_impl_(GCallback callback, const sigc::slot_base& slot, bool after)
{
// create a proxy to hold our connection info
SignalProxyConnectionNode *const pConnectionNode =
new SignalProxyConnectionNode(slot, obj_->gobj());
// connect it to glib
// pConnectionNode will be passed in the data argument to the callback.
pConnectionNode->connection_id_ = g_signal_connect_data(
obj_->gobj(), info_->signal_name, callback, pConnectionNode,
&SignalProxyConnectionNode::destroy_notify_handler,
static_cast<GConnectFlags>((after) ? G_CONNECT_AFTER : 0));
return pConnectionNode->slot_;
}
void SignalProxyNormal::emission_stop()
{
g_signal_stop_emission_by_name(obj_->gobj(), info_->signal_name);
}
// static
void SignalProxyNormal::slot0_void_callback(GObject* self, void* data)
{
// Do not try to call a signal on a disassociated wrapper.
if(Glib::ObjectBase::_get_current_wrapper(self))
{
try
{
if(sigc::slot_base *const slot = data_to_slot(data))
(*static_cast<sigc::slot<void>*>(slot))();
}
catch(...)
{
Glib::exception_handlers_invoke();
}
}
}
} // namespace Glib
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