text: // Clough42 Electronic Leadscrew
  // https://github.com/clough42/electronic-leadscrew
  //
  // MIT License
  //
  // Copyright (c) 2019 James Clough
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in all
  // copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  // SOFTWARE.
  
  
  #ifndef __USERINTERFACE_H
  #define __USERINTERFACE_H
  
  #include "ControlPanel.h"
  #include "Core.h"
  #include "Tables.h"
  
  typedef struct MESSAGE
  {
      Uint16 message[8];
      Uint16 displayTime;
      const MESSAGE *next;
  } MESSAGE;
  
  class UserInterface
  {
  private:
      ControlPanel *controlPanel;
      Core *core;
      FeedTableFactory *feedTableFactory;
  
      bool metric;
      bool thread;
      bool reverse;
  
      FeedTable *feedTable;
  
      KEY_REG keys;
  
      const MESSAGE *message;
      Uint16 messageTime;
  
      const FEED_THREAD *loadFeedTable();
      LED_REG calculateLEDs();
      void setMessage(const MESSAGE *message);
      void overrideMessage( void );
  
  public:
      UserInterface(ControlPanel *controlPanel, Core *core, FeedTableFactory *feedTableFactory);
  
      void loop( void );
  };
  
  #endif // __USERINTERFACE_H
  