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// -*- c++ -*-
dnl
dnl Glib SignalProxy Templates
dnl
dnl Copyright 2001 Free Software Foundation
dnl Copyright 1999 Karl Nelson <kenelson@ece.ucdavis.edu>
dnl
dnl This library is free software; you can redistribute it and/or
dnl modify it under the terms of the GNU Library General Public
dnl License as published by the Free Software Foundation; either
dnl version 2 of the License, or (at your option) any later version.
dnl
dnl This library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl Library General Public License for more details.
dnl
dnl You should have received a copy of the GNU Library General Public
dnl License along with this library; if not, write to the Free
dnl Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
dnl
dnl Ignore the next line
/* This is a generated file, do not edit. Generated from __file__ */
include(template.macros.m4)
#ifndef __header__
#define __header__
extern "C"
{
typedef void (*GCallback) (void);
typedef struct _GObject GObject;
}
#include <sigc++/sigc++.h>
#include <glibmm/signalproxy_connectionnode.h>
namespace Glib
{
// Forward declarations
class ObjectBase;
#ifndef DOXYGEN_SHOULD_SKIP_THIS
struct SignalProxyInfo
{
const char* signal_name;
GCallback callback;
GCallback notify_callback;
};
#endif //DOXYGEN_SHOULD_SKIP_THIS
// This base class is used by SignalProxyNormal and SignalProxyProperty.
class SignalProxyBase
{
public:
SignalProxyBase(Glib::ObjectBase* obj);
#ifndef DOXYGEN_SHOULD_SKIP_THIS
static inline sigc::slot_base* data_to_slot(void* data)
{
SignalProxyConnectionNode *const pConnectionNode = static_cast<SignalProxyConnectionNode*>(data);
// Return 0 if the connection is blocked.
return (!pConnectionNode->slot_.blocked()) ? &pConnectionNode->slot_ : 0;
}
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
protected:
ObjectBase* obj_;
private:
SignalProxyBase& operator=(const SignalProxyBase&); // not implemented
};
// shared portion of a Signal
/** The SignalProxy provides an API similar to sigc::signal that can be used to
* connect sigc::slots to glib signals.
*
* This holds the name of the glib signal and the object
* which might emit it. Actually, proxies are controlled by
* the template derivatives, which serve as gatekeepers for the
* types allowed on a particular signal.
*
*/
class SignalProxyNormal : public SignalProxyBase
{
public:
~SignalProxyNormal();
/// stops the current signal emmision (not in libsigc++)
void emission_stop();
#ifndef DOXYGEN_SHOULD_SKIP_THIS
// This callback for SignalProxy0<void>
// is defined here to avoid code duplication.
static void slot0_void_callback(GObject*, void* data);
#endif
protected:
/** Create a proxy for a signal that can be emitted by @a obj.
* @param obj The object that can emit the signal.
* @param info Information about the signal, including its name, and the C callbacks that should be called by glib.
*/
SignalProxyNormal(Glib::ObjectBase* obj, const SignalProxyInfo* info);
/** Connects a signal to a generic signal handler. This is called by connect() in derived SignalProxy classes.
*
* @param slot The signal handler, usually created with sigc::mem_fun(), or sigc::ptr_fun().
* @param after Whether this signal handler should be called before or after the default signal handler.
*/
sigc::slot_base& connect_(const sigc::slot_base& slot, bool after);
/** Connects a signal to a signal handler without a return value.
* This is called by connect() in derived SignalProxy classes.
*
* By default, the signal handler will be called before the default signal handler,
* in which case any return value would be replaced anyway by that of the later signal handler.
*
* @param slot The signal handler, which should have a void return type, usually created with sigc::mem_fun(), or sigc::ptr_fun().
* @param after Whether this signal handler should be called before or after the default signal handler.
*/
sigc::slot_base& connect_notify_(const sigc::slot_base& slot, bool after);
private:
const SignalProxyInfo* info_;
//TODO: We could maybe replace both connect_ and connect_notify_ with this in future, because they don't do anything extra.
/** This is called by connect_ and connect_impl_.
*/
sigc::slot_base& connect_impl_(GCallback callback, const sigc::slot_base& slot, bool after);
// no copy assignment
SignalProxyNormal& operator=(const SignalProxyNormal&);
};
dnl
dnl GLIB_SIGNAL_PROXY([P1, P2, ...],return type)
dnl
define([GLIB_SIGNAL_PROXY],[dnl
LINE(]__line__[)dnl
/**** Glib::[SignalProxy]NUM($1) ***************************************************/
/** Proxy for signals with NUM($1) arguments.
* Use the connect() method, with sigc::mem_fun() or sigc::ptr_fun() to connect signals to signal handlers.
*/
template <LIST(class R,ARG_CLASS($1))>
class [SignalProxy]NUM($1) : public SignalProxyNormal
{
public:
typedef sigc::slot<LIST(R,ARG_TYPE($1))> SlotType;
typedef sigc::slot<LIST(void,ARG_TYPE($1))> VoidSlotType;
[SignalProxy]NUM($1)(ObjectBase* obj, const SignalProxyInfo* info)
: SignalProxyNormal(obj, info) {}
/** Connects a signal to a signal handler.
* For instance, connect( sigc::mem_fun(*this, &TheClass::on_something) );
*
* @param slot The signal handler, usually created with sigc::mem_fun(), or sigc::ptr_fun().
* @param after Whether this signal handler should be called before or after the default signal handler.
*/
sigc::connection connect(const SlotType& slot, bool after = true)
{ return sigc::connection(connect_(slot, after)); }
/** Connects a signal to a signal handler without a return value.
* By default, the signal handler will be called before the default signal handler,
* in which case any return value would be replaced anyway by that of the later signal handler.
*
* For instance, connect( sigc::mem_fun(*this, &TheClass::on_something) );
*
* @param slot The signal handler, which should have a void return type, usually created with sigc::mem_fun(), or sigc::ptr_fun().
* @param after Whether this signal handler should be called before or after the default signal handler.
*/
sigc::connection connect_notify(const VoidSlotType& slot, bool after = false)
{ return sigc::connection(connect_notify_(slot, after)); }
};
])dnl
dnl Template forms of SignalProxy
GLIB_SIGNAL_PROXY(ARGS(P,0))
GLIB_SIGNAL_PROXY(ARGS(P,1))
GLIB_SIGNAL_PROXY(ARGS(P,2))
GLIB_SIGNAL_PROXY(ARGS(P,3))
GLIB_SIGNAL_PROXY(ARGS(P,4))
GLIB_SIGNAL_PROXY(ARGS(P,5))
GLIB_SIGNAL_PROXY(ARGS(P,6))
} // namespace Glib
#endif /* __header__ */
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