ModelView.h

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/*
 * ModelView.h - declaration of ModelView base class
 *
 * Copyright (c) 2007-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */
 
#ifndef LMMS_GUI_MODEL_VIEW_H
#define LMMS_GUI_MODEL_VIEW_H
 
#include <QPointer>
#include "Model.h"
 
namespace lmms::gui
{
 
class LMMS_EXPORT ModelView
{
public:
    ModelView( Model* model, QWidget* widget );
    virtual ~ModelView();
 
    virtual void setModel( Model* model, bool isOldModelValid = true );
    virtual void unsetModel();
 
    Model* model()
    {
        return m_model;
    }
 
    const Model* model() const
    {
        return m_model;
    }
 
    template<class T>
    T* castModel()
    {
        return dynamic_cast<T*>( model() );
    }
 
    template<class T>
    const T* castModel() const
    {
        return dynamic_cast<const T*>( model() );
    }
 
 
protected:
    // sub-classes can re-implement this to track model-changes
    virtual void modelChanged()
    {
    }
 
    QWidget* widget()
    {
        return m_widget;
    }
 
    virtual void doConnections();
 
 
private:
    QWidget* m_widget;
    QPointer<Model> m_model;
 
} ;
 
} // namespace lmms::gui
 
#endif // LMMS_GUI_MODEL_VIEW_H