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type.h

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00001 /*  Inti: Integrated Foundation Classes
00002  *  Copyright (C) 2002 The Inti Development Team.
00003  *
00004  *  This program is free software; you can redistribute it and/or modify
00005  *  it under the terms of the GNU General Public License as published by
00006  *  the Free Software Foundation; either version 2 of the License, or
00007  *  (at your option) any later version.
00008  *
00009  *  This program is distributed in the hope that it will be useful,
00010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  *  GNU Library General Public License for more details.
00013  *
00014  *  You should have received a copy of the GNU Library General Public License
00015  *  along with this program; if not, write to the Free Software
00016  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017  */
00018  
00021 
00022 #ifndef INTI_G_TYPE_H
00023 #define INTI_G_TYPE_H
00024 
00025 #ifndef INTI_BASE_H
00026 #include <inti/base.h>
00027 #endif
00028 
00029 #ifndef INTI_G_SIGNALS_H
00030 #include <inti/glib/signals.h>
00031 #endif
00032 
00033 #ifndef INTI_UTF_STRING_H
00034 #include <inti/utf-string.h>
00035 #endif
00036 
00037 namespace Inti {
00038 
00039 namespace G {
00040 
00050 
00051 class TypeInstance : virtual public ReferencedBase
00052 {
00053         TypeInstance(const TypeInstance&);
00054         TypeInstance& operator=(const TypeInstance&);
00055 
00056 protected:
00057         TypeInstance();
00059 
00060         virtual ~TypeInstance() = 0;
00062 
00063         GTypeInstance *instance;
00065 
00066 public:
00069 
00070         GTypeInstance* g_type_instance() const { return instance; }
00072 
00073         template<typename T>
00074         T* get_class() const
00075         { return reinterpret_cast<T*>(instance->g_class); }
00078         
00079         bool is_a(GType type) const;
00083 
00084         GType type() const;
00086 
00087         String type_name() const;
00089         
00090         bool is_a_type(GType ancestor_type) const;
00094 
00095         GType parent_type() const;
00096         // Get the GType of the immediate parent for the instance, or 0 if it has no parent.
00097 
00101 
00102         void add_interface(GType interface_type, GInterfaceInitFunc interface_init);
00106 
00108 
00109         static void add_interface(GType instance_type, GType interface_type, GInterfaceInitFunc interface_init);
00114 
00115         static GType register_type(GType parent_type, GClassInitFunc class_init);
00120 
00121         template<typename T>
00122         static T* class_peek_parent(void *g_class)
00123         { return static_cast<T*>(g_type_class_peek_parent(g_class)); }
00132 
00133 };
00134 
00137 
00138 class TypeInterface : virtual public TypeInstance
00139 {
00140 public:
00143 
00144         virtual ~TypeInterface() = 0;
00146 
00147         GTypeInterface* g_type_interface() const;
00149 
00150         template<typename T>
00151         T* peek(GType type) const
00152         { return static_cast<T*>(g_type_interface_peek(instance->g_class, type)); }
00156 
00158 
00159         template<typename T>
00160         static T* peek_parent(void *g_iface)
00161         { return static_cast<T*>(g_type_interface_peek_parent(g_iface)); }
00165 };
00166 
00167 } // namespace G
00168 
00169 } // namespace Inti
00170 
00171 #endif // INTI_G_TYPE_H
00172 
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