#include "DialogGoto.h"
#include "Common.h"
#include "DialogGotoSelection.h"
#include "Pou.h"

DialogGoto::DialogGoto(
	const POU* pou, 
	const TOOL* pGoto, 
	const QString& selToolName, 
	bool bNegation, 
	QWidget *parent
)
	: QDialog(parent)
	, m_pou(pou)
	, m_bNegation(bNegation)
	, m_gotoTool(pGoto)
	, m_selToolInstName(selToolName)
{
	ui.setupUi(this);

	// 对话框初始化
	this->initUI();
}

DialogGoto::~DialogGoto()
{
}


/// <summary>
/// 对话框初始化
/// </summary>
void DialogGoto::initUI()
{
	this->setWindowTitle(("Goto Option"));

	// 设置对话框风格
	this->setAttribute(Qt::WA_QuitOnClose);
	this->setWindowModality(Qt::ApplicationModal);

	// 初始化绑定显示
	ui.editTool->setText(m_selToolInstName);

	// 设置Edit控件不可编辑
	ui.editTool->setReadOnly(true);

	// 初始化取反的选中状态
	ui.checkBool->setChecked(m_bNegation);

	// 槽函数
	connect(ui.okButton, SIGNAL(clicked()), this, SLOT(onButtonOKClicked()));
	connect(ui.buttonTool, SIGNAL(clicked()), this, SLOT(onButtonToolClicked()));
	connect(ui.cancelButton, SIGNAL(clicked()), this, SLOT(reject()));

	// 设置固定窗体大小
	this->setFixedSize(363, 216);
}


/// <summary>
/// OK按钮
/// </summary>
void DialogGoto::onButtonOKClicked()
{
	if (ui.editTool->text().isEmpty())
	{
		CRITICAL_MESSAGE("Please select tool first!");

		return;
	}

	// 获取用户输入
	m_selToolInstName = ui.editTool->text();
	m_bNegation = ui.checkBool->isChecked();

	// 检查一下是否死循环，给予用户提示
	// NOTICE：此处只能检查当前状态是否处于死循环，如果POU中调整了工具Index顺序，可能死循环就消失了
	if (checkInfiniteLoop())
	{
		if (QMessageBox::Yes != QUESTION_MESSAGE(
			"There is an infinite loop with tool[" + m_selToolInstName + "], are you sure?")
			)
		{
			return;
		}		
	}

	this->accept();
}


/// <summary>
/// ... 按钮
/// </summary>
void DialogGoto::onButtonToolClicked()
{
	// (2022 - 4 - 18, Goto的工具绑定选择对话框废弃，统一通过连线来绑定Tool)
	//DialogGotoSelection dialogGotoSel(m_pou);

	//if (dialogGotoSel.exec() == DialogGoto::Accepted)
	//{
	//	// 获取用户选择的Tool信息
	//	ui.editTool->setText(dialogGotoSel.m_selToolInstName);
	//}

	CRITICAL_MESSAGE("Goto Tool Selection is deprecated, please binding tool with LINK!");
}


/// <summary>
/// 进行死循环检测
/// </summary>
/// <param name="selToolName"></param>
/// <returns></returns>
bool DialogGoto::checkInfiniteLoop()
{
	const TOOL* pBindTool = (const_cast<POU*>(m_pou))->GetToolByName(m_selToolInstName);

	// 如果连接的工具序号比当前Goto工具的小，那么说明会出现死循环的情况
	if( pBindTool->nIndex<m_gotoTool->nIndex)
	{
		return true;
	}

	// 不存在死循环
	return false;
}