#ifndef SELECTIONMANAGER_H
#define SELECTIONMANAGER_H

#include "XJOSGObject/XJOSGObject.h"
#include <osgViewer/Viewer>


#define HILIGHTCOLOR_TRANSPARENT osg::Vec4(0.7, 0.0, 0.0, 0.5)
#define HILIGHTCOLOR_UNTRANSPARENT osg::Vec4(0.7, 0.0, 0.0, 1.0)


//此类中管理选中的对象
class SelectionManager : public osg::Referenced
{

public:

	SelectionManager(osgViewer::Viewer* pViewer = NULL);
	~SelectionManager();

	// if the object is not yet in the selection List, it will be added.
	//otherwise it will not be added. In default, we need to hilight the selected obj;
	void AddChild(CXJOSGObject* pobj, bool unhilight = false);

	//remove all childeren
	void RemoveAllChildren();

	//remove obj from list
	void RemoveChild(CXJOSGObject* pobj);

	//return the number of selected list
	int NbSelected();

	//return the selected obj by index
	CXJOSGObject* GetSelectedObj(int index) const;

	//Hilight selected obj with color
	void HilightWithColor(CXJOSGObject* pobj, osg::Vec4& color = HILIGHTCOLOR_UNTRANSPARENT);

	//unlight selected color;
	void UnHilightObj(CXJOSGObject* pobj);

	//unselect and unHilight all obj from list 
	void DeSelectSelList();	

	//set selected obj's visibility in selList 
	void InvisibleSelList(bool visible);

	//set selected obj's transparency in selList
	void TransparentSelList(bool transparent);

	//set selected obj's wireframe in selList
	void WireframeSelList(bool wireframe);

	//添加框选网格面片的网格显示对象
	void AddToMeshListWithSelectedFaces(CXJOSGObject* pobj);

	std::vector<CXJOSGObject*>& GetMeshListsWithSelectedFaces() {return m_MapOfObjWithSelTriangles;}

protected:

	//check if obj  is in selected list	, if has ,return true, else return false
	bool Find(const CXJOSGObject* pobj);

private:
	std::vector<CXJOSGObject*> m_selObjList;  //选中对象列表
	std::vector<CXJOSGObject*> m_MapOfObjWithSelTriangles; //有被拾取到网格面片的显示对象

	osgViewer::Viewer* m_pViewer;
};


#endif