#include "StdAfx.h"
#include ".\itemcurveedit.h"
#include "SigmaDoc.h"
#include "SigmaView.h"
#include ".\actionmodifieditem.h"
#include "ActionBackupItem.h"
#include "DrawOperator/TypeDefine.h"
#include "ActionCurveEdit.h"
#include "ActionCurveEditAddPoint.h"
#include "ActionCurveEditDeletePoint.h"
#include "HandleDrawer.h"

// 引入具体的编辑器实现
#include "CurveEditorDefault.h"
#include "CurveEditorSpline.h"

namespace NItem
{
#define TRACKER_SOLID			1
#define TRACKER_RECT			2
#define TRACKER_CIRCLE			4
#define TRACKER_NO_EDIT			TRACKER_SOLID | TRACKER_CIRCLE

// ========== 适配器/代理实现 ==========

CItemCurveEdit::CItemCurveEdit(CSigmaDoc* pDoc)
	: CItemCurve(pDoc)
	, m_pDoc(pDoc)
{
	this->SetType(ITEM_CURVE_EDIT);
	// 默认使用 Default 模式编辑器
	m_currentEditor = CreateEditor(DRAG_NODE_DEFAULT);
}

CItemCurveEdit::~CItemCurveEdit(void)
{
}

int CItemCurveEdit::GetCurrentEditMode() const
{
	if (std::dynamic_pointer_cast<CurveEditorDefault>(m_currentEditor))
	{
		return DRAG_NODE_DEFAULT;
	}

	if (std::dynamic_pointer_cast<CurveEditorSpline>(m_currentEditor))
	{
		return DRAG_NODE_SPLINE;
	}

	return -1;
}

// 创建编辑器的辅助方法
std::shared_ptr<CurveEditorBase> CItemCurveEdit::CreateEditor(int mode)
{
	switch (mode)
	{
	case DRAG_NODE_DEFAULT:
		return std::make_shared<CurveEditorDefault>(m_pDoc);
	case DRAG_NODE_SPLINE:
		return std::make_shared<CurveEditorSpline>(m_pDoc);
	default:
		return std::make_shared<CurveEditorDefault>(m_pDoc);
	}
}

// 根据曲线状态切换编辑器
void CItemCurveEdit::SetCurveState(int state, CDC* pDC)
{

	// 根据状态映射到编辑模式
	int mode = DRAG_NODE_DEFAULT;
	switch (state)
	{
	case CURVE_STATE_LINE:
		mode = DRAG_NODE_DEFAULT;
		break;
	case CURVE_STATE_ARC:
		mode = DRAG_NODE_COS;
		break;
	case CURVE_STATE_SPLINE:
		mode = DRAG_NODE_SPLINE;
		break;
	default:
		// WARNING:
		// 当前不能切换为 DRAG_NODE_DEFAULT
		// 原因: state 中模式切换与其他指令混合处理，
		//      若在此处切换，会意外修改编辑状态
		return;
	}

	SwitchEditMode(mode);
	CItemCurve::SetCurveState(state, pDC);
}

// 显式切换编辑模式
void CItemCurveEdit::SwitchEditMode(int mode)
{
	// 模式变更拦截：
	// 1. 防御冗余触发：解决上层状态同步 Bug 导致的点击时重复进入此函数的问题，保护当前交互状态不丢失。
	// 2. 生命周期管理：仅在模式真正变化时销毁并重建 Editor。
	// 3. 状态隔离：真正切换模式时，不跨对象透传控制点下标（HandleIndex），确保各模式逻辑独立且安全。
	if (GetCurrentEditMode() == mode)
	{
		return;
	}

	// 保存当前状态
	POSITION oldPos = GetPos();
	
	// 创建新编辑器
	m_currentEditor = CreateEditor(mode);
	
	// 同步状态
	if (oldPos && m_currentEditor)
	{
		m_currentEditor->SetPos(oldPos);
	}
}

// ========== 所有方法转发到 m_currentEditor ==========

void CItemCurveEdit::OnDraw(CXyDC* pDC)
{
	if (m_currentEditor)
		m_currentEditor->OnDraw(pDC);
}

void CItemCurveEdit::OnLButtonDblClk(UINT nFlags, CPoint point)
{
	if (m_currentEditor)
		m_currentEditor->OnLButtonDblClk(nFlags, point);
}

void CItemCurveEdit::OnLButtonDown(CDC* pDC, UINT nFlags, CPoint point, int vk)
{
	if (m_currentEditor)
		m_currentEditor->OnLButtonDown(pDC, nFlags, point, vk);
}

int CItemCurveEdit::OnMouseMove(CDC* pDC, UINT nFlags, CPoint point)
{
	if (m_currentEditor)
		return m_currentEditor->OnMouseMove(pDC, nFlags, point);
	return 0;
}

void CItemCurveEdit::OnLButtonUp(CDC* pDC, UINT nFlags, CPoint point, int vk)
{
	if (m_currentEditor)
		m_currentEditor->OnLButtonUp(pDC, nFlags, point, vk);
}

BOOL CItemCurveEdit::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message)
{
	if (m_currentEditor)
		return m_currentEditor->OnSetCursor(pWnd, nHitTest, message);
	return TRUE;
}

BOOL CItemCurveEdit::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
	if (m_currentEditor)
		return m_currentEditor->OnKeyDown(nChar, nRepCnt, nFlags);
	return FALSE;
}

BOOL CItemCurveEdit::OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags)
{
	if (m_currentEditor)
		return m_currentEditor->OnKeyUp(nChar, nRepCnt, nFlags);
	return FALSE;
}

int CItemCurveEdit::GetSubMenu()
{
	if (m_currentEditor)
		return m_currentEditor->GetSubMenu();
	return 6;
}

void CItemCurveEdit::SetPos(POSITION pos)
{
	CItem::SetPos(pos);
	if (m_currentEditor)
		m_currentEditor->SetPos(pos);
}

void CItemCurveEdit::Clear(void)
{
	if (m_currentEditor)
		m_currentEditor->Clear();
}

void CItemCurveEdit::Draw(CDC* pDC)
{
	if (m_currentEditor)
		m_currentEditor->Draw(pDC);
}

void CItemCurveEdit::DrawAssistant(CDC* pDC, int mouseX, int mouseY)
{
	if (m_currentEditor)
		m_currentEditor->DrawAssistant(pDC, mouseX, mouseY);
}

int CItemCurveEdit::GetNumberOfNode()
{
	if (m_currentEditor)
		return m_currentEditor->GetNumberOfNode();
	return -1;
}

void CItemCurveEdit::EreaseHandles(CDC* pDC)
{
	if (m_currentEditor)
		m_currentEditor->EreaseHandles(pDC);
}

void CItemCurveEdit::EndEdit(void)
{
	if (m_currentEditor)
		m_currentEditor->EndEdit();
}

void CItemCurveEdit::CancelAll(void)
{
	if (m_currentEditor)
		m_currentEditor->CancelAll();
}

BOOL CItemCurveEdit::IsCanCancelAll(void)
{
	if (m_currentEditor)
		return m_currentEditor->IsCanCancelAll();
	return FALSE;
}

int CItemCurveEdit::HitTestHandle(CPoint point)
{
	if (m_currentEditor)
		return m_currentEditor->HitTestHandle(point);
	return -1;
}

void CItemCurveEdit::DeleteHandle(int nIndex)
{
	if (m_currentEditor)
		m_currentEditor->DeleteHandle(nIndex);
}

int CItemCurveEdit::AddHandle(CPoint point)
{
	if (m_currentEditor)
		return m_currentEditor->AddHandle(point);
	return -1;
}

CCurveEx* CItemCurveEdit::GetCurCurve(void)
{
	if (m_currentEditor)
		return m_currentEditor->GetControlCurve();
	return nullptr;
}

void CItemCurveEdit::AttachProcess(CPointList & oldPoints, CPointList & newPoints)
{
	if (m_currentEditor)
		m_currentEditor->AttachProcess(oldPoints, newPoints);
}

void CItemCurveEdit::DrawMoveLine(void)
{
	if (m_currentEditor)
		m_currentEditor->DrawMoveLine();
}

void CItemCurveEdit::GetMarkCurve(void)
{
	if (m_currentEditor)
		m_currentEditor->GetMarkCurve();
}
BOOL CItemCurveEdit::IsCanAddHandle(CPoint point, double* pl0)
{
	if (m_currentEditor)
		return m_currentEditor->IsCanAddHandle(point, pl0);
	return FALSE;
}

void CItemCurveEdit::GetXY(CCurveEx* pValue, int nIndex, dfPoint& point)
{
	if (m_currentEditor)
		return m_currentEditor->GetXY(pValue, nIndex, point);
}

CPoint2D CItemCurveEdit::GetCDown() const
{
	if (m_currentEditor)
		return m_currentEditor->GetCDown();
	return CPoint2D{ 0.0, 0.0 };
}

CPoint2D CItemCurveEdit::GetCLast() const
{
	if (m_currentEditor)
		return m_currentEditor->GetCDown();
	return CPoint2D{ 0.0, 0.0 };
}

}//namespace