state-manager.hpp

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/*
  STATE-MANAGER.hpp  -  maintaining persistent interface state

   Copyright (C)
     2016,            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_STATE_MANAGER_H
#define STAGE_CTRL_STATE_MANAGER_H


#include "lib/idi/entry-id.hpp"
#include "lib/diff/gen-node.hpp"
#include "lib/nocopy.hpp"

#include <string>


namespace stage {
namespace ctrl {
  
  using std::string;
  
  
  class StateManager
    : util::NonCopyable
    {
    protected:
      virtual ~StateManager();    
      
      using ID = lib::idi::BareEntryID const&;
      using StateMark = lib::diff::GenNode const&;
    public:
      
      virtual StateMark
      currentState (ID uiElm, string propertyKey) const =0;
      
      virtual void
      replayState (ID uiElm, string propertyKey)        =0;
      
      virtual void
      replayAllState()                                  =0;
      
      virtual void
      replayAllState (string propertyKey)               =0;
      
      virtual void
      replayAllProperties (ID uiElm)                    =0;
      
      virtual void
      clearState()                                      =0;
      
    private:
    };
  
  
  
}} // namespace stage::ctrl
#endif /*STAGE_CTRL_STATE_MANAGER_H*/