text: #pragma once
  
  /*
   * The MIT License (MIT)
   *
   * Copyright (c) 2018 Filip Wasil and Fillwave community members
   *
   * 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.
   */
  
  namespace flw {
  namespace flf {
  
  /*! \class ITreeNode
   * \brief Basic tree ITreeNode Interface.
   */
  
  class ITreeNode {
   public:
    ITreeNode();
  
    virtual ~ITreeNode();
  
    ITreeNode& operator=(const ITreeNode&);
  
    ITreeNode(const ITreeNode&);
  
    virtual void onAttached(ITreeNode *parent) = 0;
  
    virtual void onDetached() = 0;
  };
  
  } /* flf */
  } /* flw */
  