//////////////////////////////////////////////////////////////////////////////
//文件 ActionDeleteLayerItem.h
//主要功能: 
//
//程序编写:		2006-12-07
/////////////////////////////////////////////////////////////////////////////

#include "StdAfx.h"
#include ".\actiondeletelayeritem.h"
#include "SigmaDoc.h"
#include "SigmaView.h"
#include "Visitor.h"

NAction::CActionLayerDeleteItem::CActionLayerDeleteItem()
	: CActionDeleteItem(nullptr, 0)
{
}

CActionLayerDeleteItem::CActionLayerDeleteItem(CSigmaDoc * ppDoc, CLayer* pLayer)
: CActionDeleteItem(ppDoc, ActionType::ActionTypeLayerDelete)
{
	if(pLayer)
	{
		LayerList.AddTail(pLayer);
		pLayer->GetParentClass()->RemoveAt(pLayer);
	}
}

CActionLayerDeleteItem::CActionLayerDeleteItem(CSigmaDoc * ppDoc, const CPositionList& ElementList, CPtrList& cLayerList)
: CActionDeleteItem(ppDoc, ActionTypeLayerDelete, ElementList)
{
	CLayer* pv;
	POSITION pos=cLayerList.GetHeadPosition();
	while(pos)
	{
		pv=(CLayer*)cLayerList.GetNext(pos);
		if(pv==NULL) continue;
		LayerList.AddTail(pv);
		pv->GetParentClass()->RemoveAt(pv);
	}
}

CActionLayerDeleteItem::~CActionLayerDeleteItem(void)
{
	Clear();
}

void NAction::CActionLayerDeleteItem::Clear(void)
{
	CActionDeleteItem::Clear();
	if(m_bDeleted)
	{
		CLayer* pv;
		POSITION pos=LayerList.GetHeadPosition();
		while(pos)
		{
			pv=(CLayer*)LayerList.GetNext(pos);
			delete pv;
			pv = nullptr;
		}
		LayerList.RemoveAll();
	}
}

void CActionLayerDeleteItem::Undo()
{
	CLayer* pLayer;
	POSITION pos=LayerList.GetHeadPosition();
	while(pos)
	{
		pLayer=(CLayer*)LayerList.GetNext(pos);
		GetDoc()->GetDraw()->AddLayer(pLayer);
	}

	//Undo所删除层位下的元素
	CActionDeleteItem::Undo();

	ReflashLayer();
}

void CActionLayerDeleteItem::Redo()
{
	//Redo所删除层位下的元素
	CActionDeleteItem::Redo();

	CLayer* pLayer;
	POSITION pos=LayerList.GetHeadPosition();
	while(pos)
	{
		pLayer=(CLayer*)LayerList.GetNext(pos);
		pLayer->GetParentClass()->RemoveAt(pLayer);
	}
	ReflashLayer();

	CXy* pXy = GetDoc()->GetDraw();
	if (pXy->GetLayerCount() == 0)
	{
		pXy->InitLayerClass();
	}
	pXy->SetCurrentLayer(pXy->GetClassList()->GetHead()->GetHead());
}

void NAction::CActionLayerDeleteItem::accept(CActionVisitor& visitor)
{
	visitor.visit(*this);
}