// CommandManager.cpp: implementation of the CCommandManager class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "effecteditor.h"
#include "CommandManager.h"

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

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CCommandManager::CCommandManager()
{
	m_lBottom = 0;
	m_lTop = 0;
	m_lMemoryTop = 0;
	m_lPresent = 0;
}

CCommandManager::~CCommandManager()
{

}

void CCommandManager::AddCommand(unsigned long dwKind, unsigned long dwUID, unsigned long dwFrame, unsigned long dwCommand, unsigned long dwListKind, float eData)
{
	if(m_lPresent == m_lMemoryTop)
	{
		CCommand AddCommand;
		AddCommand.SetCommand(dwKind, dwUID, dwFrame, dwCommand, dwListKind, eData);
		m_lstCommand.Add(AddCommand);
		m_lPresent = m_lTop = m_lMemoryTop = m_lstCommand.num;
	} else
	{
		m_lstCommand[m_lPresent].SetCommand(dwKind, dwUID, dwFrame, dwCommand, dwListKind, eData);
		m_lTop = ++m_lPresent;
	}
}

void CCommandManager::AddCommand(unsigned long dwKind, unsigned long dwUID, unsigned long dwFrame, unsigned long dwCommand, unsigned long dwListKind, quaternion eData)
{
	if(m_lPresent == m_lMemoryTop)
	{
		CCommand AddCommand;
		AddCommand.SetCommand(dwKind, dwUID, dwFrame, dwCommand, dwListKind, eData);
		m_lstCommand.Add(AddCommand);
		m_lPresent = m_lTop = m_lMemoryTop = m_lstCommand.num;
	} else
	{
		m_lstCommand[m_lPresent].SetCommand(dwKind, dwUID, dwFrame, dwCommand, dwListKind, eData);
		m_lTop = ++m_lPresent;
	}
}

void CCommandManager::AddCommand(unsigned long dwKind, unsigned long dwUID, unsigned long dwFrame, unsigned long dwCommand, unsigned long dwListKind, color eData)
{
	if(m_lPresent == m_lMemoryTop)
	{
		CCommand AddCommand;
		AddCommand.SetCommand(dwKind, dwUID, dwFrame, dwCommand, dwListKind, eData);
		m_lstCommand.Add(AddCommand);
		m_lPresent = m_lTop = m_lMemoryTop = m_lstCommand.num;
	} else
	{
		m_lstCommand[m_lPresent].SetCommand(dwKind, dwUID, dwFrame, dwCommand, dwListKind, eData);
		m_lTop = ++m_lPresent;
	}
}

void CCommandManager::AddCommand(unsigned long dwKind, unsigned long dwUID, unsigned long dwFrame, unsigned long dwCommand, unsigned long dwListKind, vector3 eData)
{
	if(m_lPresent == m_lMemoryTop)
	{
		CCommand AddCommand;
		AddCommand.SetCommand(dwKind, dwUID, dwFrame, dwCommand, dwListKind, eData);
		m_lstCommand.Add(AddCommand);
		m_lPresent = m_lTop = m_lMemoryTop = m_lstCommand.num;
	} else
	{
		m_lstCommand[m_lPresent].SetCommand(dwKind, dwUID, dwFrame, dwCommand, dwListKind, eData);
		m_lTop = ++m_lPresent;
	}
}

CCommand *CCommandManager::Undo(void)
{
	if(m_lPresent != m_lBottom)
	{
		m_lPresent--;
		if(m_lstCommand[m_lPresent].GetCommand() == COMMAND_NEWDATA)
		{
			m_lPresent--;
		}
		return &m_lstCommand[m_lPresent];
	} else
	{
		return NULL;
	}
}

CCommand *CCommandManager::Redo(void)
{
	if(m_lPresent != m_lTop)
	{
		if(m_lstCommand[m_lPresent].GetCommand() == COMMAND_NEWDATA)
		{
			m_lPresent++;
		}
		return &m_lstCommand[m_lPresent++];
	} else
	{
		return NULL;
	}
}