/*=============================================================================

NOTE: THIS FILE IS A HANDMADE WRAPPER FOR THE ManagedITK PROJECT.

Project:   ManagedITK
Program:   Insight Segmentation & Registration Toolkit
Module:    itkManagedProcessObjectCommand.cxx
Language:  C++/CLI
Author:    Dan Mueller
Date:      $Date: 2008-06-15 19:37:32 +0200 (Sun, 15 Jun 2008) $
Revision:  $Revision: 15 $

Portions of this code are covered under the ITK and VTK copyright.
See http://www.itk.org/HTML/Copyright.htm for details.
See http://www.kitware.com/VTKCopyright.htm for details.

Copyright (c) 2008 Queensland University of Technology (QUT)

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.

=============================================================================*/

#pragma once
#pragma warning( disable : 4635 ) // Disable warnings about XML doc comments

#ifndef __itkManagedProcessObjectCommand_cxx
#define __itkManagedProcessObjectCommand_cxx

// Include some useful ITK headers
#pragma unmanaged
#include "itkCommand.h"
#include "itkEventObject.h"
#include "itkProcessObject.h"

// Force Managed
#pragma managed

// Use System namespaces
#using <mscorlib.dll>
using namespace System;

// Include the auto_gcroot 'smart pointer'
#include <msclr\gcroot.h>
using namespace msclr;

// Include ManagedITK.Common
#using <ManagedITK.Common.dll>

namespace itk
{

  ///<summary>
  ///A native itk::Command which raises managed events on the internal
  ///managed itkProcessObject.
  ///</summary>
  private class itkProcessObjectCommand : public itk::Command
  {
  public:
    typedef itkProcessObjectCommand		Self;
    typedef itk::Command				Superclass;
    typedef itk::SmartPointer<Self>		Pointer;
    itkNewMacro( Self );

    // Create a useful typedef for the managed object pointer
    // NOTE: This is NOT auto_gcroot because we don't want to
    //		 release the managed object when the Command
    //		 pointer is removed and/or goes out of scope.
    typedef gcroot<itkProcessObject^> PointerToManagedObjectType;

  protected:
    itkProcessObjectCommand(){};
    ~itkProcessObjectCommand(){};

  private:
    PointerToManagedObjectType m_PointerToManagedObject;

  public:

    /** Method: Set the managed object for which the events should be 
    * passed along to. 
    */
    void SetManagedObject(PointerToManagedObjectType ptrManagedObject)
    {
      this->m_PointerToManagedObject = ptrManagedObject;
    }

    /** Called when the native ITK event is raised. */
    void Execute(itk::Object *caller, const itk::EventObject & event)
    {
      // Cast caller to ProcessObject
      itk::ProcessObject::Pointer process = dynamic_cast<itk::ProcessObject*>(caller);

      // Raise the corresponding managed event
      if (itk::ProgressEvent().CheckEvent(&event))
        this->m_PointerToManagedObject->InvokeProgressEvent( gcnew itk::itkProgressEventArgs(process->GetProgress()) );
      else if (itk::StartEvent().CheckEvent(&event))
        this->m_PointerToManagedObject->InvokeStartedEvent( gcnew itk::itkEventArgs() );
      else if (itk::EndEvent().CheckEvent(&event))
        this->m_PointerToManagedObject->InvokeEndedEvent( gcnew itk::itkEventArgs() );
      else if (itk::AbortEvent().CheckEvent(&event))
        this->m_PointerToManagedObject->InvokeAbortedEvent( gcnew itk::itkEventArgs() );
      else if (itk::IterationEvent().CheckEvent(&event))
        this->m_PointerToManagedObject->InvokeIterationEvent( gcnew itk::itkEventArgs() );
      else if (itk::ModifiedEvent().CheckEvent(&event))
        this->m_PointerToManagedObject->InvokeModifiedEvent( gcnew itk::itkEventArgs() );
    }

    void Execute(const itk::Object *caller, const itk::EventObject & event)
    { return; }

  };

} // end namespace itk

#endif