#include "StdAfx.h"
#include "CommandMgr.h"
#include "LogMgr.h"
#include "GlobalFunction.h"


#define MAX_UNDO_CNT 100//最大撤销次数

CCommandMgr gCommandMgr;
CCommandMgr::CCommandMgr(void)
{
}
CCommandMgr::~CCommandMgr(void)
{
    m_UndoQueue.clear();
    m_RedoQueue.clear();
}
//p 是指令特定的操作对象
void CCommandMgr::AddUndoCommand(CCommandBase *p)
{
      vector<Sptr<CObjBase>> Vec;
      AddUndoCommand(p,Vec);
}
void CCommandMgr::AddUndoCommand(CCommandBase *p,vector<Sptr<CObjBase>> &pMarkObjectVec)
{
    if(p->HasOpObj()==false)
    {
         //加入指定的
         if(pMarkObjectVec.empty()==false)
         {
              vector<Sptr<CObjBase>>::iterator iter = pMarkObjectVec.begin();
              vector<Sptr<CObjBase>>::iterator iter_end = pMarkObjectVec.end();
              for(;iter!=iter_end;iter++)
              {
                   p->AddOpObj((*iter));
              }
         }
         else//没有指定就加入当前选择的obj
         {
              gLayer.GetObjContainer().AddObjToCmd(p,true);
         }
    }
    if(p->HasOpObj()==false)//没有操作对象时不要添加指令
    {
         delete p;
         return;
    }
    gCommandMgr.AddUndoCommandExt(p);
}
//添加指令
void CCommandMgr::AddUndoCommandExt(CCommandBase *p)
{
     //------------------------------------日志start
     CLogInfo LogInfo;
     LogInfo.m_ClassName = "CCommandMgr";
     LogInfo.m_FuncName = "AddUndoCommandExt";
     LogInfo.m_LogMsg = p->GetStr();
     gLogMgr->WriteLogInfo(LogInfo);
     //------------------------------------日志end
     //保存到智能指针
     Sptr<CCommandBase> sPtr(p);
     
     m_UndoQueue.push_back(sPtr);
     if(m_UndoQueue.size()>MAX_UNDO_CNT)
     {
          m_UndoQueue.pop_front();
     }
     //之前的redo 全部清除
     m_RedoQueue.clear();
}
bool CCommandMgr::HasUndoCmd()
{
    return !m_UndoQueue.empty();
}
bool CCommandMgr::HasRedoCmd()
{
    return !m_RedoQueue.empty();
}
void CCommandMgr::Undo()
{
    if(!m_UndoQueue.empty())
    {
         Sptr<CCommandBase> p = m_UndoQueue[m_UndoQueue.size()-1];
         p->Undo();
         m_RedoQueue.push_back(p);
         m_UndoQueue.pop_back();
         //------------------------------------日志start
         CLogInfo LogInfo;
         LogInfo.m_ClassName = "CCommandMgr";
         LogInfo.m_FuncName = "Undo";
         LogInfo.m_LogMsg = p->GetStr();
         gLogMgr->WriteLogInfo(LogInfo);
         //------------------------------------日志end
    }
}
void CCommandMgr::Redo()
{
    if(!m_RedoQueue.empty())
    {
         Sptr<CCommandBase> p = m_RedoQueue[m_RedoQueue.size()-1];
         p->Excute();
         m_UndoQueue.push_back(p);
         m_RedoQueue.pop_back();
         //------------------------------------日志start
         CLogInfo LogInfo;
         LogInfo.m_ClassName = "CCommandMgr";
         LogInfo.m_FuncName = "Redo";
         LogInfo.m_LogMsg = p->GetStr();
         gLogMgr->WriteLogInfo(LogInfo);
         //------------------------------------日志end
    }
}
//重置回撤指令状态
void CCommandMgr::Reset()
{
     m_UndoQueue.clear();
     m_RedoQueue.clear();
}