/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkMeshSource_hxx
#define itkMeshSource_hxx


namespace itk
{

template <typename TOutputMesh>
MeshSource<TOutputMesh>::MeshSource()
{
  // Create the output. We use static_cast<> here because we know the default
  // output must be of type TOutputMesh
  OutputMeshPointer output = static_cast<TOutputMesh *>(this->MakeOutput(0).GetPointer());

  this->ProcessObject::SetNumberOfRequiredOutputs(1);
  this->ProcessObject::SetNthOutput(0, output.GetPointer());

  m_GenerateDataRegion = 0;
  m_GenerateDataNumberOfRegions = 0;
}

template <typename TOutputMesh>
typename MeshSource<TOutputMesh>::DataObjectPointer MeshSource<TOutputMesh>::MakeOutput(DataObjectPointerArraySizeType)
{
  return TOutputMesh::New().GetPointer();
}

template <typename TOutputMesh>
auto
MeshSource<TOutputMesh>::GetOutput() -> OutputMeshType *
{
  return itkDynamicCastInDebugMode<TOutputMesh *>(this->GetPrimaryOutput());
}

template <typename TOutputMesh>
auto
MeshSource<TOutputMesh>::GetOutput(unsigned int idx) -> OutputMeshType *
{
  return itkDynamicCastInDebugMode<TOutputMesh *>(this->ProcessObject::GetOutput(idx));
}

template <typename TOutputMesh>
void
MeshSource<TOutputMesh>::SetOutput(OutputMeshType * output)
{
  itkWarningMacro("SetOutput(): This method is slated to be removed from ITK.  Please use GraftOutput() in possible "
                  "combination with DisconnectPipeline() instead.");
  this->ProcessObject::SetNthOutput(0, output);
}

template <typename TOutputMesh>
void
MeshSource<TOutputMesh>::GenerateInputRequestedRegion()
{
  Superclass::GenerateInputRequestedRegion();
}

template <typename TOutputMesh>
void
MeshSource<TOutputMesh>::GraftOutput(DataObject * graft)
{
  this->GraftNthOutput(0, graft);
}

template <typename TOutputMesh>
void
MeshSource<TOutputMesh>::GraftOutput(const DataObjectIdentifierType & key, DataObject * graft)
{
  if (!graft)
  {
    itkExceptionMacro("Requested to graft output that is a nullptr pointer");
  }

  // we use the process object method since all out output may not be
  // of the same type
  DataObject * output = this->ProcessObject::GetOutput(key);

  // Call GraftImage to copy meta-information, regions, and the pixel container
  output->Graft(graft);
}

template <typename TOutputMesh>
void
MeshSource<TOutputMesh>::GraftNthOutput(unsigned int idx, DataObject * graft)
{
  if (idx >= this->GetNumberOfIndexedOutputs())
  {
    itkExceptionMacro("Requested to graft output " << idx << " but this filter only has "
                                                   << this->GetNumberOfIndexedOutputs() << " indexed Outputs.");
  }
  this->GraftOutput(this->MakeNameFromOutputIndex(idx), graft);
}

template <typename TOutputMesh>
void
MeshSource<TOutputMesh>::PrintSelf(std::ostream & os, Indent indent) const
{
  Superclass::PrintSelf(os, indent);
}
} // end namespace itk

#endif
