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// -*- c++ -*-
#ifndef _GLIBMM_PROPERTY_H
#define _GLIBMM_PROPERTY_H
/* Copyright 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 <glibmmconfig.h>
#include <glibmm/propertyproxy.h>
#include <glibmm/value.h>
namespace Glib
{
#ifndef DOXYGEN_SHOULD_SKIP_THIS
#ifdef GLIBMM_CXX_CAN_USE_NAMESPACES_INSIDE_EXTERNC
//For the AIX xlC compiler, I can not find a way to do this without putting the functions in the global namespace. murrayc
extern "C"
{
#endif //GLIBMM_CXX_CAN_USE_NAMESPACES_INSIDE_EXTERNC
void custom_get_property_callback(GObject* object, unsigned int property_id,
GValue* value, GParamSpec* param_spec);
void custom_set_property_callback(GObject* object, unsigned int property_id,
const GValue* value, GParamSpec* param_spec);
#ifdef GLIBMM_CXX_CAN_USE_NAMESPACES_INSIDE_EXTERNC
} //extern "C"
#endif //GLIBMM_CXX_CAN_USE_NAMESPACES_INSIDE_EXTERNC
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
class PropertyBase
{
public:
Glib::ustring get_name() const;
void notify();
protected:
Glib::Object* object_;
Glib::ValueBase value_;
GParamSpec* param_spec_;
PropertyBase(Glib::Object& object, GType value_type);
~PropertyBase();
bool lookup_property(const Glib::ustring& name);
void install_property(GParamSpec* param_spec);
const char* get_name_internal() const;
private:
// noncopyable
PropertyBase(const PropertyBase&);
PropertyBase& operator=(const PropertyBase&);
#ifndef DOXYGEN_SHOULD_SKIP_THIS
friend void Glib::custom_get_property_callback(GObject* object, unsigned int property_id,
GValue* value, GParamSpec* param_spec);
friend void Glib::custom_set_property_callback(GObject* object, unsigned int property_id,
const GValue* value, GParamSpec* param_spec);
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
};
template <class T>
class Property : public PropertyBase
{
public:
typedef T PropertyType;
typedef Glib::Value<T> ValueType;
Property(Glib::Object& object, const Glib::ustring& name);
Property(Glib::Object& object, const Glib::ustring& name, const PropertyType& default_value);
inline void set_value(const PropertyType& data);
inline PropertyType get_value() const;
inline Property<T>& operator=(const PropertyType& data);
inline operator PropertyType() const;
inline Glib::PropertyProxy<T> get_proxy();
};
#ifndef DOXYGEN_SHOULD_SKIP_THIS
/**** Glib::Property<T> ****************************************************/
template <class T>
Property<T>::Property(Glib::Object& object, const Glib::ustring& name)
:
PropertyBase(object, ValueType::value_type())
{
if(!lookup_property(name))
install_property(static_cast<ValueType&>(value_).create_param_spec(name));
}
template <class T>
Property<T>::Property(Glib::Object& object, const Glib::ustring& name,
const typename Property<T>::PropertyType& default_value)
:
PropertyBase(object, ValueType::value_type())
{
static_cast<ValueType&>(value_).set(default_value);
if(!lookup_property(name))
install_property(static_cast<ValueType&>(value_).create_param_spec(name));
}
template <class T> inline
void Property<T>::set_value(const typename Property<T>::PropertyType& data)
{
static_cast<ValueType&>(value_).set(data);
this->notify();
}
template <class T> inline
typename Property<T>::PropertyType Property<T>::get_value() const
{
return static_cast<const ValueType&>(value_).get();
}
template <class T> inline
Property<T>& Property<T>::operator=(const typename Property<T>::PropertyType& data)
{
static_cast<ValueType&>(value_).set(data);
this->notify();
return *this;
}
template <class T> inline
Property<T>::operator T() const
{
return static_cast<const ValueType&>(value_).get();
}
template <class T> inline
Glib::PropertyProxy<T> Property<T>::get_proxy()
{
return Glib::PropertyProxy<T>(object_, get_name_internal());
}
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
} // namespace Glib
#endif /* _GLIBMM_PROPERTY_H */
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