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

, 19 Mar 2009
A Model-View-Controller Framework that integrates with the MFC Doc/View architecture.
SbjDevBin202.zip
XmlMvc2090.dll
Shapes.exe
SbjCore2090.dll
SbjDevSrc202.zip
SbjCore
res
bigcat.ico
main.bmp
properties.bmp
properties_hc.bmp
properties_wnd_hc.ico
Shapes
Data
res
buttons.bmp
filelarge.bmp
filesmall.bmp
filesmall.png
main.bmp
Shapes.ico
ShapesDoc.ico
Toolbar.bmp
Toolbar256.bmp
treeimages.bmp
Write - Copy.png
Write.png
Write1.png
writelarge.bmp
writesmall - Copy.bmp
writesmall - Copy.png
writesmall.bmp
writesmall.png
XmlMvc
res
CommonSettings.vsprops
CommonAppReleaseSettings.vsprops
CommonAppDebugSettings.vsprops
CommonDLLDebugSettings.vsprops
CommonDLLReleaseSettings.vsprops
//------------------------------------------------------------------------------
// $Workfile: CmdMsgHandler.cpp $
// $Header:  $
//
//	Copyright � 2008 SbjCat
// All rights reserved.
//
//
// *** Authors ***
//	 Steve Johnson
//
// $Revision: $
//
//-----------------------------------------------------------------------------

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

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


namespace SbjCore
{
	namespace Mvc
	{
		/////////////////////////////////////////////////////
		
		/// dtor
		CmdMsgHandler::~CmdMsgHandler()
		{
		}
		
		CmdTargetController* CmdMsgHandler::GetController() const
		{
			return static_cast<CmdTargetController*>(MessageHandler::GetController());
		}
		

		/** HandleCmd is called by the CmdTargetController's HandleCmdMsg 
			method when it determines that the message is a Command message. 
			HandleCmd calls the private pure virtual OnHandleCmd method
			which actually handles the message. See the documentation 
			for OnHandleCmd for further information.
		*/
		bool CmdMsgHandler::HandleCmd(UINT nID)
		{
			return OnHandleCmd(nID);
		}

		/** HandleCmdUI is called by the CmdTargetController's HandleCmdMsg 
			method when it determines that the message is a CmdUI message. 
			HandleCmdUI calls the private virtual OnHandleCmdUI method 
			which actually handles the message. See the documentation for 
			OnHandleCmdUI for further information.
		*/
		bool CmdMsgHandler::HandleCmdUI(CCmdUI* pCmdUI)					
		{
			return OnHandleCmdUI(pCmdUI);
		}
		
		/** HandleCmdPrev calls the previous handler's HandleCmd method.  
			This should be called from the overridden OnHandleCmd method 
			to preserve the chain of previous handlers assigned to the 
			CmdTargetController.
		
			\param pCtrlr the CmdTargetController where this handler has 
			been mapped
			\param nID the ID handled.

			\return true if message is handled
		*/
		bool CmdMsgHandler::HandleCmdPrev(UINT nID)
		{
			bool bRslt = false;
			CmdMsgHandler* pHandler = dynamic_cast<CmdMsgHandler*>(GetPrevHandler());
			if (pHandler != NULL)
			{
				bRslt = pHandler->HandleCmd(nID);
			}
			return bRslt;
		}
		
		/** HandleCmdUIPrev calls the previous handler's HandleCmdUI method.  
			This should be called from the overridden OnHandleCmdUI method 
			to preserve the chain of previous handlers assigned to the 
			CmdTargetController.

			\param pCmdUI pointer to the CCmdUI class.

			\return true if message is handled
		*/
		bool CmdMsgHandler::HandleCmdUIPrev(CCmdUI* pCmdUI)
		{
			bool bRslt = false;
			CmdMsgHandler* pHandler = dynamic_cast<CmdMsgHandler*>(GetPrevHandler());
			if (pHandler != NULL)
			{
				bRslt = pHandler->HandleCmdUI(pCmdUI);
			}
			return bRslt;
		}
		

		/////////////////////////////////////////////////
		
		/** OnHandleCmd is a private pure virtual method that must be 
			overridden in derived classes to provide the actual handling 
			of the Cmd message.  It is called by the public HandleCmd method.
		
			A call to HandleCmdPrev should be made to assure any previous 
			handlers are called. 
			
			\param nID the ID handle. In the case where a handler is mapped 
			to a series of IDs, this identifies the particular ID that is 
			being handled.
																					
			\return true if message is handled
		*/
		// SBJ 06.04.26 no implementation for a pure virtual
		// bool CmdMsgHandler::OnHandleCmd(UINT nID) = 0;
		
		

		/** OnHandleCmdUI is a private virtual method that can be overridden 
			in derived classes to provide specific behavior for the CmdUI
			message.  It is called by the public HandleCmdUI method.

			A call to HandleCmdUIPrev should be made to assure any previous 
			handlers are called. 

			\param pCmdUI pointer to the CCmdUI class. See MFC documentation
			for information on CCmdUI.

			\return true if message is handled
		*/
		bool CmdMsgHandler::OnHandleCmdUI(CCmdUI* pCmdUI)
		{
			pCmdUI->Enable(true);

			return true;
		}

			
	}
	
}

//*** Modification History ***
// $Log:  $

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

SBJ

United States United States
Real name is Steve Johnson. Programming since 1979. Started on a Heathkit Micro with a DEC LSI-11 and UCSD Pascal. Moved to PCs & DOS as soon as Turbo Pascal became available. Did some Assembly, ISR, TSR etc. All this while working for a Manufacturing Co. for 8 years. Had my own solo Co. doing barcode labeling software for 4 years (terrible business man, all I wanted to do was code). Since then working for various software companies. Moved to Windows around the time of 3.1 with Borland C then C++. Then on to VC++ and MFC, and just about anything I could get my hands on or had to learn for my job, and been at it ever since. Of course recently I've been playing with .NET, ASP, C#, WPF etc.

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