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value.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  
00024 
00025 #ifndef INTI_ATK_VALUE_H
00026 #define INTI_ATK_VALUE_H
00027 
00028 #ifndef INTI_G_TYPE_H
00029 #include <inti/glib/type.h>
00030 #endif
00031 
00032 #ifndef __ATK_VALUE_H__
00033 #include <atk/atkvalue.h>
00034 #endif
00035 
00036 namespace Inti {
00037 
00038 namespace G {
00039 class Value;
00040 }
00041 
00042 namespace Atk {
00043 
00044 class ValueIface;
00045 
00054 
00055 class Value : public virtual G::TypeInterface
00056 {
00057         friend class ValueIface;
00058 
00059 protected:
00062         virtual ~Value() = 0;
00063         
00065 //  Override these do_ methods when you want to change the default behaviour of the AtkValue.
00066         
00067         virtual void do_get_current_value(GValue *value);
00068 
00069         virtual void do_get_maximum_value(GValue *value);
00070 
00071         virtual void do_get_minimum_value(GValue *value);
00072 
00073         virtual bool do_set_current_value(const GValue *value);
00074 
00075 public:
00078 
00079         AtkValue* atk_value() const { return (AtkValue*)instance; }
00081 
00082         AtkValueIface* atk_value_iface() const;
00084 
00085         operator AtkValue* () const;
00087 
00088         void get_current_value(G::Value& value) const;
00091 
00092         void get_maximum_value(G::Value& value) const;
00095 
00096         void get_minimum_value(G::Value& value) const;
00099 
00103 
00104         bool set_current_value(const G::Value& value);
00108         
00110 };
00111 
00112 } // namespace Atk
00113 
00114 } // namespace Inti
00115 
00116 #endif // INTI_ATK_VALUE_H
00117 
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