kicad/include/kiway_holder.h

92 lines
2.6 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2019-2020 KiCad Developers, see AUTHORS.txt for contributors.
*
* 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; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef KIWAY_HOLDER_H_
#define KIWAY_HOLDER_H_
#include <kicommon.h>
class KIWAY;
class PROJECT;
class wxWindow;
/**
* A mix in class which holds the location of a wxWindow's KIWAY.
*
* It allows calls to Kiway() and SetKiway().
*/
class KICOMMON_API KIWAY_HOLDER
{
public:
enum HOLDER_TYPE { DIALOG, FRAME, PANEL };
KIWAY_HOLDER( KIWAY* aKiway, HOLDER_TYPE aType ) :
m_kiway( aKiway ),
m_type( aType )
{}
HOLDER_TYPE GetType() const { return m_type; }
/**
* Return a reference to the #KIWAY that this object has an opportunity to participate in.
*
* A KIWAY_HOLDER is not necessarily a KIWAY_PLAYER.
*/
KIWAY& Kiway() const
{
wxASSERT( m_kiway ); // smoke out bugs in Debug build, then Release runs fine.
return *m_kiway;
}
/**
* Safety check before asking for the Kiway reference
* @return true if kiway is non-null
*/
bool HasKiway() const
{
return m_kiway != nullptr;
}
/**
* Return a reference to the #PROJECT associated with this #KIWAY.
*/
PROJECT& Prj() const;
/**
* It is only used for debugging, since "this" is not a wxWindow*. "this" is
* a KIWAY_HOLDER mix-in.
*
* @param aDest is the recipient of \a aKiway pointer.
* @param aKiway is often from a parent window or from #KIFACE::CreateKiWindow().
*/
void SetKiway( wxWindow* aDest, KIWAY* aKiway );
private:
// private, all setting is done through SetKiway().
KIWAY* m_kiway; // no ownership.
HOLDER_TYPE m_type;
};
#endif // KIWAY_HOLDER_H_