1 #ifndef oxygengenericengine_h
2 #define oxygengenericengine_h
3 /*
4 * this file is part of the oxygen gtk engine
5 * Copyright (c) 2010 Hugo Pereira Da Costa <hugo.pereira@free.fr>
6 *
7 * This  library is free  software; you can  redistribute it and/or
8 * modify it  under  the terms  of the  GNU Lesser  General  Public
9 * License  as published  by the Free  Software  Foundation; either
10 * version 2 of the License, or(at your option ) any later version.
11 *
12 * This library is distributed  in the hope that it will be useful,
13 * but  WITHOUT ANY WARRANTY; without even  the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License  along  with  this library;  if not,  write to  the Free
19 * Software Foundation, Inc., 51  Franklin St, Fifth Floor, Boston,
20 * MA 02110-1301, USA.
21 */
22 
23 
24 #include "oxygenbaseengine.h"
25 #include "oxygendatamap.h"
26 
27 #include <gtk/gtk.h>
28 
29 namespace Oxygen
30 {
31     //! forward declaration
32     class Animations;
33 
34     //! associates widgets with some type of data
35     template< typename T>
36     class GenericEngine: public BaseEngine
37     {
38 
39         public:
40 
41         //! constructor
GenericEngine(Animations * widget)42         GenericEngine( Animations* widget ):
43             BaseEngine( widget )
44             {}
45 
46         //! destructor
~GenericEngine(void)47         virtual ~GenericEngine( void )
48         {}
49 
50         //! register widget
registerWidget(GtkWidget * widget)51         virtual bool registerWidget( GtkWidget* widget )
52         {
53             if( _data.contains( widget ) ) return false;
54             if( enabled() )
55             {
56 
57                 T& data( _data.registerWidget( widget ) );
58                 data.connect( widget );
59 
60             } else _data.registerWidget( widget );
61 
62             BaseEngine::registerWidget( widget );
63             return true;
64 
65         }
66 
67         //! unregister widget
unregisterWidget(GtkWidget * widget)68         virtual void unregisterWidget( GtkWidget* widget )
69         {
70             if( !_data.contains( widget ) ) return;
71             _data.value( widget ).disconnect( widget );
72             _data.erase( widget );
73         }
74 
75         //! enabled state
76         /*! returns true if changed */
77         inline virtual bool setEnabled( bool value );
78 
79         //! true if widget is included
contains(GtkWidget * widget)80         virtual bool contains( GtkWidget* widget )
81         { return _data.contains( widget ); }
82 
83         protected:
84 
85         //! return refence to data
data(void)86         virtual DataMap<T>& data( void )
87         { return _data; }
88 
89         //! return refence to data
data(void)90         virtual const DataMap<T>& data( void ) const
91         { return _data; }
92 
93         private:
94 
95         //! map widgets to data
96         DataMap<T> _data;
97 
98     };
99 
100     //________________________________________________________________________
setEnabled(bool value)101     template< typename T> bool GenericEngine<T>::setEnabled( bool value )
102     {
103         if( enabled() == value ) return false;
104 
105         BaseEngine::setEnabled( value );
106         if( enabled() ) _data.connectAll();
107         else _data.disconnectAll();
108 
109         return true;
110 
111     }
112 
113 }
114 
115 #endif
116