#include "WindowAppTreeTool.h"

#include "ToolDepository.h"
#include "DragMimeData.h"

extern ToolDepository toolDepository;

WindowAppTreeTool::WindowAppTreeTool(TREETOOL_MODE mode, QTreeWidget* parent)
	: QTreeWidget(parent)
	, m_Mode(mode)
{
	// 创建界面布局
	createLayouts();

	// 创建节点的右键菜单
	createMenu();

	// 加载工具
	toolDepository.LoadTools();

	// 添加所有工具到树形结构中
	initTreeTools();
}

WindowAppTreeTool::~WindowAppTreeTool()
{
}


/// <summary>
/// 清空工具箱
/// </summary>
void WindowAppTreeTool::clear()
{
	m_RootItems.clear();
	m_CateItems.clear();
	m_ItemTools.clear();
	QTreeWidget::clear();
}

/// <summary>
/// 创建界面布局
/// </summary>
void WindowAppTreeTool::createLayouts()
{
	// 1列
	this->setColumnCount(1);
	// 隐藏表头
	this->setHeaderHidden(true);
	// 显示虚线
	this->setStyle(QStyleFactory::create("windows"));
	// 添加右键菜单策略
	this->setContextMenuPolicy(Qt::CustomContextMenu);

	// 设置根节点有连接线
	this->setRootIsDecorated(true);
	// 设置节点展开
	this->setItemsExpandable(true);

	//设置树节点允许拖拽（只允许拖出，不允许拖入）
	this->setDragEnabled(true);
	// 下面这种方式也可以
	//this->setDragDropMode(QAbstractItemView::DragOnly);
	//拖拽节点的移动
	//this->setDefaultDropAction(Qt::MoveAction);

}


/// <summary>
/// 创建节点的右键菜单
/// </summary>
void WindowAppTreeTool::createMenu()
{
	// 绑定槽函数
	// connect(nodeMenus[NODE_GVL], SIGNAL(triggered(QAction*)), this, SLOT(onMenuGVL(QAction*)));

	// 节点菜单的Action
	actionAdd = new QAction(("Add"), this);
	actionInfo = new QAction(("ToolInfo"), this);

	m_menuTool = new QMenu(this);
	m_menuTool->addAction(actionAdd);
	m_menuTool->addAction(actionInfo);

	connect(m_menuTool, SIGNAL(triggered(QAction*)), this, SLOT(onMenuAdd(QAction*)));
	connect(m_menuTool, SIGNAL(triggered(QAction*)), this, SLOT(onMenuinfo(QAction*)));

	// connect(this, SIGNAL(itemClicked(QTreeWidgetItem*, int)), this, SLOT(checkself(QTreeWidgetItem*, int)));

	// 右键菜单
	connect(this, SIGNAL(customContextMenuRequested(const QPoint&)), this, SLOT(popMenu(const QPoint&)));
}


/// <summary>
/// 添加所有工具到树形结构中
/// </summary>
void WindowAppTreeTool::initTreeTools(TREETOOL_MODE mode)
{
	clear();

	m_Mode = mode;
	
	for (int i = 0; i < toolDepository.m_TotalTools.size(); i++)
	{
		const TOOL_CATEGORY& cate = toolDepository.m_TotalTools[i];

		// 2021-6-8增加，区分Pou和Hardware
		if (m_Mode == TREETOOL_MODE::MODE_HARDWARE &&
			cate.strName != CATEGORY_TOOL_HARDWARE)
		{
			this->expandAll();
			continue;
		}

		AddCateItem(cate.strName);

		for (int j = 0; j < cate.staticTools.size(); j++)
		{
			const STATIC_TOOL& tool = cate.staticTools[j];

			AddToolItem(cate.strName, tool);
		}
	}
}


/// <summary>
/// 添加分类父节点
/// </summary>
/// <param name="cateName"></param>
void WindowAppTreeTool::AddCateItem(const QString& cateName)
{
	QTreeWidgetItem* newItem = new QTreeWidgetItem(this, QStringList(cateName));

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

	// 2021-3-23增加，使父节点不可选中
	newItem->setFlags(Qt::ItemIsEnabled);

	m_RootItems.append(newItem);

	m_CateItems.insert(cateName, newItem);
}


/// <summary>
/// 添加Tool子节点
/// </summary>
/// <param name="cateName"></param>
/// <param name="tool"></param>
void WindowAppTreeTool::AddToolItem(const QString& cateName, const STATIC_TOOL& tool)
{
	QTreeWidgetItem* newItem = new QTreeWidgetItem(m_CateItems.value(cateName), QStringList(tool.strName));
	newItem->setIcon(0, QIcon(":/image/tree_item.png"));
	m_CateItems[cateName]->addChild(newItem);

	// 将新加入的item和对应的tool绑定
	m_ItemTools.insert(newItem, &tool);
}


/// <summary>
/// 显示右键菜单
/// </summary>
/// <param name=""></param>
void WindowAppTreeTool::popMenu(const QPoint&)
{
	QTreeWidgetItem* curItem = this->currentItem();  //获取当前被点击的节点
	// 点击到空白处则不显示菜单
	if (curItem == nullptr)
	{
		return;
	}

	m_menuTool->exec(QCursor::pos());  //在当前鼠标位置显示

}


/// <summary>
/// 右键菜单槽函数 - Add
/// </summary>
/// <param name="action"></param>
void WindowAppTreeTool::onMenuAdd(QAction* action)
{
	Q_UNUSED(action);
}


/// <summary>
/// 右键菜单槽函数 - Info
/// </summary>
/// <param name="action"></param>
void WindowAppTreeTool::onMenuinfo(QAction* action)
{
	Q_UNUSED(action);
}


/// <summary>
/// 鼠标按下时获取用户拖拽的节点
/// </summary>
/// <param name="event"></param>
void WindowAppTreeTool::mousePressEvent(QMouseEvent* event)
{
	if (event->button() & Qt::LeftButton)
	{
		// 获取拖拽的节点
		QTreeWidgetItem* dragItem = this->itemAt(event->pos());

		// 2021-3-23 如果是父节点，则不允许选中

		const STATIC_TOOL* pTool = m_ItemTools.value(dragItem);
		if (pTool != nullptr)
		{
			// 拖动时的图标（实际应该是一个功能块的缩略图）
			QPixmap pixmap(":/image/tree_item.png");

			// 设置拖拽信息
			DragMimeData* mimeData = new DragMimeData();
			mimeData->setDragData(FORMAT_DRAG_TOOL, pTool);

			// 执行拖动
			QDrag* drag = new QDrag(this);
			drag->setMimeData(mimeData);
			drag->setPixmap(pixmap);
			drag->exec(Qt::CopyAction);
		}

	}

	QTreeWidget::mousePressEvent(event);

}