///
/// Copyright (c) 2012, Texas A&M University
/// All rights reserved.
///
/// Redistribution and use in source and binary forms, with or without
/// modification, are permitted provided that the following conditions
/// are met:
///
///  * Redistributions of source code must retain the above copyright
///    notice, this list of conditions and the following disclaimer.
///  * Redistributions in binary form must reproduce the above
///    copyright notice, this list of conditions and the following
///    disclaimer in the documentation and/or other materials provided
///    with the distribution.
///  * Neither the name of Texas A&M University nor the names of its
///    contributors may be used to endorse or promote products derived
///    from this software without specific prior written permission.
///
/// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
/// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
/// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
/// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
/// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
/// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
/// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
/// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
/// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
/// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
/// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
/// POSSIBILITY OF SUCH DAMAGE.
///
/// The following software was written as part of a collaboration with the
/// University of South Carolina, Interdisciplinary Mathematics Institute.
///

///
/// @file   pasteCommand.cpp
/// @details implementation of the class PasteCommand
/// @author  Yue Li and Matthew Hielsberg

#include <pcl/apps/point_cloud_editor/pasteCommand.h>
#include <pcl/apps/point_cloud_editor/cloud.h>
#include <pcl/apps/point_cloud_editor/copyBuffer.h>
#include <pcl/apps/point_cloud_editor/selection.h>

PasteCommand::PasteCommand (ConstCopyBufferPtr copy_buffer_ptr,
                            SelectionPtr selection_ptr,
                            CloudPtr cloud_ptr)
  : copy_buffer_ptr_(copy_buffer_ptr), selection_ptr_(selection_ptr),
    cloud_ptr_(cloud_ptr)
{
}

void
PasteCommand::execute()
{
  if (!cloud_ptr_)
    return;
  // record the previous cloud size
  prev_cloud_size_ = cloud_ptr_->size();

  // paste and update cloud status
  cloud_ptr_->append(copy_buffer_ptr_->get());

  // make the appended cloud be selected
  selection_ptr_ -> clear();
  selection_ptr_ -> addIndexRange(prev_cloud_size_,
                                  cloud_ptr_->size() - prev_cloud_size_);
  // notify the cloud that the selection has changed
  cloud_ptr_ -> setSelection(selection_ptr_);
}

void
PasteCommand::undo()
{
  if (!cloud_ptr_)
    return;
  selection_ptr_->removeIndexRange(prev_cloud_size_, cloud_ptr_->size()-prev_cloud_size_);
  cloud_ptr_->resize(prev_cloud_size_);
}
