#include "DialogWaitSelection.h"
#include "GvlManager.h"
#include "TaskManager.h"

DialogWaitSelection::DialogWaitSelection(QWidget *parent)
	: QDialog(parent)
	, m_selVariable(nullptr)
{
	ui.setupUi(this);

	// 对话框初始化
	this->initUI();

	// 初始化所有合适的触发事件
	this->initAllTriggerEvents();
}

DialogWaitSelection::~DialogWaitSelection()
{

}


/// <summary>
/// 对话框初始化
/// </summary>
void DialogWaitSelection::initUI()
{
	// 设置对话框标题
	this->setWindowTitle(("Wait Events Selection"));

	this->setAttribute(Qt::WA_QuitOnClose);
	this->setWindowModality(Qt::ApplicationModal);

	// Tree
	// 1列
	ui.treeEvent->setColumnCount(1);
	// 隐藏表头
	ui.treeEvent->setHeaderHidden(true);
	// 显示虚线
	ui.treeEvent->setStyle(QStyleFactory::create("windows"));

	// 槽函数
	connect(ui.selectButton, SIGNAL(clicked()), this, SLOT(onButtonSelectClicked()));
	connect(ui.cancelButton, SIGNAL(clicked()), this, SLOT(reject()));

	// 设置固定窗体大小
	this->setFixedSize(485, 490);
}


/// <summary>
/// 初始化所有合适的触发事件
/// </summary>
void DialogWaitSelection::initAllTriggerEvents()
{
	// 首先获取所有的系统内置触发事件
	QTreeWidgetItem* rootItem = this->AddRootItem(GROUP_NAME_SYSTEMEVENT);
	for (EVENT* pEvent : g_pTaskManager->m_sysEvents)
	{
		this->AddChildItem(rootItem, pEvent);
	}

	// 然后获取所有带有触发性质的变量
	QHash<QString, VARIABLE*> eventVars = g_pGvlManager->getAllEventVariables();
	QHash<QString, VARIABLE*>::const_iterator it = eventVars.constBegin();
	while (it != eventVars.constEnd())
	{
		VARIABLE* pVar = it.value();
		// 变量组名字
		QString strGroupName = pVar->eventTrigger->groupName();

		// 查找是否已经存在此节点了
		QList<QTreeWidgetItem*> items = ui.treeEvent->findItems(strGroupName, Qt::MatchFlag::MatchExactly);
		// 如果存在，则直接添加子节点
		if (items.size() > 0)
		{
			this->AddChildItem(items[0], pVar);
		}
		// 如果不存在，需要先创建一个根节点
		else
		{
			rootItem = this->AddRootItem(strGroupName);
			this->AddChildItem(rootItem, pVar);
		}

		++it;
	}	

	// 将树形结构展开
	ui.treeEvent->expandAll();
}


/// <summary>
/// 添加根节点
/// </summary>
/// <param name="toolName"></param>
/// <returns></returns>
QTreeWidgetItem* DialogWaitSelection::AddRootItem(const QString& nodeName)
{
	QTreeWidgetItem* newItem = new QTreeWidgetItem(QStringList(nodeName));
	newItem->setIcon(0, QIcon(":/image/tool_tree_item.png"));
	// 使父节点不可选中
	newItem->setFlags(Qt::ItemIsEnabled);

	ui.treeEvent->addTopLevelItem(newItem);

	return newItem;
}


/// <summary>
/// 添加子节点
/// </summary>
/// <param name="pToolItem"></param>
/// <param name="pVar"></param>
void DialogWaitSelection::AddChildItem(QTreeWidgetItem* pRootItem, const VARIABLE* pVar)
{
	QTreeWidgetItem* newItem = new QTreeWidgetItem(pRootItem, QStringList(pVar->strName));

	newItem->setIcon(0, QIcon(":/image/Input.png"));

	pRootItem->addChild(newItem);
}


/// <summary>
/// 按名字查找某一个节点
/// </summary>
/// <param name="nodeName"></param>
/// <returns></returns>
QTreeWidgetItem* DialogWaitSelection::findItem(const QString& nodeName)
{
	QTreeWidgetItemIterator it(ui.treeEvent);

	while (*it)
	{
		// 如果节点名字相同则返回当前节点
		if ((*it)->text(0) == nodeName)
		{
			return *it;
		}
		
		it++;
	}

	return nullptr;
}


/// <summary>
/// select按钮
/// </summary>
void DialogWaitSelection::onButtonSelectClicked()
{
	// 获取用户输入，并转换成对应的Variable
	QList<QTreeWidgetItem*> selItems = ui.treeEvent->selectedItems();

	if (selItems.size() <= 0)
	{
		// 如果选择的节点无效，则不允许关闭
		Utility::VPCriticalMessageBox(" The event selected is invalid!");

		return;
	}

	// 获取用户选择的变量
	QString strName = selItems[0]->text(0);
	QString strGroupName = selItems[0]->parent()->text(0);

	// 首先检查是否是系统内置事件
	m_selVariable = g_pTaskManager->getSysEventByName(strName);

	// 如果不是的话，再判断是否是某一个变量
	if (m_selVariable == nullptr)
	{
		// 转换成对应的Variable
		m_selVariable = g_pGvlManager->getVariableByName(strGroupName, strName);

		// 校验有效性
		if (m_selVariable == nullptr)
		{
			Utility::VPCriticalMessageBox(" The event selected is nullptr!");

			return;
		}
	}

	vDebug() << "Select variable [" << m_selVariable->strFullName << "].";

	this->accept();
}