The SBJ MVC Framework - The Design View, Responding to Model Change

//------------------------------------------------------------------------------
// $Workfile: CmdTargetController.cpp $
// $Header: /SbjDev/SbjCore/CmdTargetController.cpp 3     10/24/08 9:03a Steve $
//
//	Copyright � 2008 SbjCat
// All rights reserved.
//
//
// *** Authors ***
//	 Steve Johnson
//
// $Revision: 3 $
//
//-----------------------------------------------------------------------------

#include "stdafx.h"
#include "CmdTargetController.h"
#include "CmdMsgHandler.h"
#include "NotifyMsgHandler.h"

#include <stack>

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif


namespace SbjCore
{
	namespace Mvc
	{
		/// private implementation struct for the CmdTargetController class
		struct CmdTargetControllerImpl
		{
			CCmdTarget* pCmdTarget;


			/// ctor
			CmdTargetControllerImpl() :
				pCmdTarget(NULL)
			{
			}

			/// dtor
			virtual ~CmdTargetControllerImpl()
			{
			}
			
		};
		
		
		////////////////////////////////////////////////////////		
		
		IMPLEMENT_DYNCREATE(CmdTargetController, Controller)

		
		CmdTargetController::CmdTargetController() :
			m_pImpl(new CmdTargetControllerImpl)
		{
		}

		
		CmdTargetController::~CmdTargetController()
		{
			try 
			{
				delete m_pImpl;
			}
			catch (...)
			{
				ASSERT(false);
			}

		}

		
		void CmdTargetController::SetCmdTarget(CCmdTarget* p)
		{
			m_pImpl->pCmdTarget = p;
		}

		
		CCmdTarget* CmdTargetController::GetCmdTarget() const
		{
			return m_pImpl->pCmdTarget;
		}

		bool CmdTargetController::RoutCmdMsg(UINT nID,			
			int nCode,						
			void* pExtra,					
			AFX_CMDHANDLERINFO* pHandlerInfo)
		{
			return OnRoutCmdMsg(nID, nCode, pExtra, pHandlerInfo);
		}			
		
		
		
		////////////////////////////////////////////////////////////////////////////////////////////////

		/** HandleCmdMsg queries the handler map and routes message if handler is found
		
			This method is called by ControlledCmdTargetT<>::OnCmdMsg before any possible default
			processing by the controlled _baseClass.  It should never be called directly.
			
			\return true if message is handled and no further action should be taken
		*/
		bool CmdTargetController::HandleCmdMsg(UINT nID)
		{
			bool bRslt = false;

			if (m_pImpl->pCmdTarget != NULL)
			{
				try
				{
					CmdMsgHandler* pHandler = dynamic_cast<CmdMsgHandler*>(GetHandler(nID));

					if (pHandler != NULL)
					{
						bRslt = pHandler->HandleCmd(nID);
					}
				}
				catch (...)
				{
					ASSERT(false);
				}
			}
			return bRslt;
		}

		bool CmdTargetController::HandleCmdUIMsg(UINT nID, CCmdUI* pCmdUI)
		{
			bool bRslt = false;
			if (m_pImpl->pCmdTarget != NULL)
			{
				try
				{
						CmdMsgHandler *pHandler = dynamic_cast<CmdMsgHandler*>(GetHandler(nID));

						if (pHandler != NULL)
						{
							bRslt = pHandler->HandleCmdUI(pCmdUI);
						}
				}
				catch (...)
				{
					ASSERT(false);
				}
			}
				
			return bRslt;
		}
		

		bool CmdTargetController::HandleNotifyMsg(NMHDR* pNMHdr, LRESULT* pResult)
		{
			bool bRslt = false;
			if (m_pImpl->pCmdTarget != NULL)
			{
				try
				{
					NotifyMsgHandler *pHandler = dynamic_cast<NotifyMsgHandler*>(GetHandler(pNMHdr->code));

					if (pHandler != NULL)
					{
						bRslt = pHandler->HandleNotify(pNMHdr, pResult);
					}
				}
				catch (...)
				{
					ASSERT(false);
				}
			}

			return bRslt;
		}
		
		bool CmdTargetController::OnRoutCmdMsg(UINT nID,			///< command ID.
			int nCode,							///< command notification code.
			void* pExtra,						///< see CCmdTarget::OnCmdMsg doc
			AFX_CMDHANDLERINFO* pHandlerInfo)	///< see CCmdTarget::OnCmdMsg doc);
		{
			nID;
			nCode;
			pExtra;
			pHandlerInfo;
			
			return false;
		}

	}
}

//*** Modification History ***
// $Log: /SbjDev/SbjCore/CmdTargetController.cpp $
// 
// 3     10/24/08 9:03a Steve