panel-locator.hpp

Go to the documentation of this file.

/*
  PANEL-LOCATOR.hpp  -  manage all top level windows

  Copyright (C)         Lumiera.org
    2017,               Hermann Vosseler <Ichthyostega@web.de>

  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, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/


#ifndef STAGE_CTRL_PANEL_LOCATOR_H
#define STAGE_CTRL_PANEL_LOCATOR_H

#include "stage/gtk-base.hpp"
#include "stage/workspace/panel-manager.hpp"
#include "lib/format-string.hpp"
#include "lib/meta/util.hpp"
#include "lib/nocopy.hpp"

#include <type_traits>
#include <memory>
#include <list>


namespace stage {
namespace workspace {
  class WorkspaceWindow;
}
namespace panel {
  class Panel;
}
namespace ctrl {
  
  namespace error = lumiera::error;
  
  using panel::Panel;
  using util::_Fmt;
  using std::list;
  
  
  
  class PanelLocator
    : util::NonCopyable
    {
      using PWindow = std::shared_ptr<workspace::WorkspaceWindow>;
      using WindowList = list<PWindow>;
      
      WindowList& windowList_;
      
      
    public:
      PanelLocator (WindowList&);
      
      template<class PAN>
      PAN& find_or_create();
      
      
    private:
      panel::Panel& preliminary_impl_PanelLookup (int typeID);
    };
  
  
  
  template<class PAN>
  inline PAN&
  PanelLocator::find_or_create()
  {
    static_assert (std::is_base_of<panel::Panel, PAN>(), "Lumiera Panel subclass expected");
        
    int typeID = workspace::PanelManager::findPanelID<PAN>();
    if (-1 == typeID)
      throw error::Invalid (_Fmt{"Requested type «%s» not usable as docking panel."}
                                % util::typeStr<PAN>()
                           ,LERR_(WRONG_TYPE));
    
    return dynamic_cast<PAN&> (preliminary_impl_PanelLookup (typeID));
  }
  
  
  
}}// namespace stage::ctrl
#endif /*STAGE_CTRL_PANEL_LOCATOR_H*/