kicad/common/widgets/wx_treebook.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2023 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 3
* 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
*/
#include <widgets/wx_treebook.h>
#include <wx/panel.h>
#include <wx/sizer.h>
class LAZY_PAGE : public wxPanel
{
public:
LAZY_PAGE( wxWindow* aParent, std::function<wxWindow*( wxWindow* aParent )> aLazyCtor ) :
wxPanel( aParent, wxID_ANY ),
m_lazyCtor( std::move( aLazyCtor ) ),
m_mainSizer( nullptr ),
m_contents( nullptr )
{
m_mainSizer = new wxBoxSizer( wxVERTICAL );
SetSizer( m_mainSizer );
}
wxWindow* Resolve()
{
if( !m_contents )
{
m_contents = m_lazyCtor( this );
m_mainSizer->Add( m_contents, 1, wxEXPAND, 5 );
m_mainSizer->Layout();
m_contents->TransferDataToWindow();
}
return m_contents;
}
bool Show( bool show ) override
{
if( show )
Resolve();
// m_contents has been created as a child window of LAZY_PAGE, and has been added to
// LAZY_PAGE's m_mainSizer. So wxPanel::Show() should call m_contents' Show() method,
// whether overridden or not. Only it doesn't, so we call it directly here.
if( show && m_contents )
m_contents->Show( true );
return wxPanel::Show( show );
}
private:
std::function<wxWindow*( wxWindow* aParent )> m_lazyCtor;
wxSizer* m_mainSizer;
wxWindow* m_contents;
};
WX_TREEBOOK::WX_TREEBOOK( wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size,
long style, const wxString& name ) :
wxTreebook( parent, id, pos, size, style, name )
{
}
bool WX_TREEBOOK::AddLazyPage( std::function<wxWindow*( wxWindow* aParent )> aLazyCtor,
const wxString& text, bool bSelect, int imageId )
{
return AddPage( new LAZY_PAGE( this, std::move( aLazyCtor ) ), text, bSelect, imageId );
}
bool WX_TREEBOOK::AddLazySubPage( std::function<wxWindow*( wxWindow* aParent )> aLazyCtor,
const wxString& text, bool bSelect, int imageId )
{
return AddSubPage( new LAZY_PAGE( this, std::move( aLazyCtor ) ), text, bSelect, imageId );
}
wxWindow* WX_TREEBOOK::ResolvePage( size_t aPage )
{
wxWindow* page = GetPage( aPage );
if( LAZY_PAGE* lazyPage = dynamic_cast<LAZY_PAGE*>( page ) )
return lazyPage->Resolve();
return page;
}