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git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@888 0778d3d1-df1d-0410-868b-ea421aaaa00d
113 lines
2.2 KiB
C++
113 lines
2.2 KiB
C++
/*
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* mv_base.h - base for M/V-architecture of LMMS
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*
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* Copyright (c) 2007-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef _MV_BASE_H
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#define _MV_BASE_H
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#include <QtCore/QObject>
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class modelView;
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class model : public QObject
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{
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Q_OBJECT
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public:
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model( model * _parent, bool _default_constructed = FALSE ) :
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QObject( _parent ),
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m_defaultConstructed( _default_constructed )
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{
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}
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virtual ~model()
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{
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}
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inline bool defaultConstructed( void )
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{
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return( m_defaultConstructed );
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}
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private:
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bool m_defaultConstructed;
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signals:
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// emitted if actual data of the model (e.g. values) have changed
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void dataChanged( void );
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// emitted in case new data was not set as it's been equal to old data
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void dataUnchanged( void );
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// emitted if properties of the model (e.g. ranges) have changed
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void propertiesChanged( void );
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} ;
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class modelView
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{
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public:
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modelView( model * _model );
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virtual ~modelView()
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{
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}
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virtual void setModel( model * _model, bool _old_model_valid = TRUE );
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template<class T>
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T * castModel( void )
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{
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return( dynamic_cast<T *>( m_model ) );
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}
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template<class T>
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const T * castModel( void ) const
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{
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return( dynamic_cast<T *>( m_model ) );
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}
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protected:
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// sub-classes can re-implement this to track model-changes
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virtual void modelChanged( void )
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{
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}
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virtual void doConnections( void );
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private:
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model * m_model;
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} ;
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#endif
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