///
/// Copyright (c) 2012, Texas A&M University
/// All rights reserved.
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///
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///    notice, this list of conditions and the following disclaimer.
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///    copyright notice, this list of conditions and the following
///    disclaimer in the documentation and/or other materials provided
///    with the distribution.
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///    contributors may be used to endorse or promote products derived
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/// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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/// The following software was written as part of a collaboration with the
/// University of South Carolina, Interdisciplinary Mathematics Institute.
///

/// @file copyCommand.h
/// @details A CopyCommand object provides functionality for filling the copy
/// buffer with the current selection.  The
/// @author Yue Li and Matthew Hielsberg

#ifndef COPY_COMMAND_H_
#define COPY_COMMAND_H_

#include <pcl/apps/point_cloud_editor/command.h>
#include <pcl/apps/point_cloud_editor/localTypes.h>
#include <pcl/apps/point_cloud_editor/copyBuffer.h>

class CopyCommand : public Command
{
  public:
    /// @brief Constructor
    /// @param copy_buffer_ptr a shared pointer pointing to the copy buffer.
    /// @param selection_ptr a shared pointer pointing to the selection object.
    /// @param cloud_ptr a shared pointer pointing to the cloud object.
    CopyCommand (CopyBufferPtr copy_buffer_ptr,
                 ConstSelectionPtr selection_ptr,
                 ConstCloudPtr cloud_ptr)
      : copy_buffer_ptr_(copy_buffer_ptr), selection_ptr_(selection_ptr),
        cloud_ptr_(cloud_ptr)
    {
      has_undo_ = false;
    }

    /// @brief Destructor
    ~CopyCommand ()
    {
    }
  
  protected:
    /// @brief Copy the selected points into the copy buffer.
    /// @pre Assumes the constructor was given appropriate pointers to the
    /// required objects.
    void
    execute ()
    {
      if (!cloud_ptr_)
        return;
      copy_buffer_ptr_ -> set(cloud_ptr_, *selection_ptr_);
    }

    /// @brief undo is not supported for this command.
    void
    undo ()
    {
      assert(false);
    }

  private:
    /// @brief Default constructor - object is not default constructable
    CopyCommand ()
    {
      assert(false);
    }

    /// @brief Copy constructor - commands are non-copyable
    CopyCommand (const CopyCommand&)
    {
      assert(false);
    }

    /// @brief Equal operator - commands are non-copyable
    CopyCommand&
    operator= (const CopyCommand&)
    {
      assert(false); return (*this);
    }

    /// a pointer to the copy buffer.
    CopyBufferPtr copy_buffer_ptr_;

    /// a shared pointer pointing to the selection
    ConstSelectionPtr selection_ptr_;

    /// a shared pointer pointing to the cloud
    ConstCloudPtr cloud_ptr_;
};
#endif //COPY_COMMAND_H_
