panel-locator.hpp

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/*
  PANEL-LOCATOR.hpp  -  manage all top level windows
 
   Copyright (C)
     2017,            Hermann Vosseler <Ichthyostega@web.de>
 
 **Lumiera** 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. See the file COPYING for further details.
 
*/
 
 
#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*/