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Diffstat (limited to 'libs/glibmm2/glibmm/property.h')
| -rw-r--r-- | libs/glibmm2/glibmm/property.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/libs/glibmm2/glibmm/property.h b/libs/glibmm2/glibmm/property.h new file mode 100644 index 0000000000..f25ef84d1f --- /dev/null +++ b/libs/glibmm2/glibmm/property.h @@ -0,0 +1,171 @@ +// -*- c++ -*- +#ifndef _GLIBMM_PROPERTY_H +#define _GLIBMM_PROPERTY_H +/* $Id$ */ + +/* 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 Library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#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 */ + |