#ifndef _SPLITTER_NEWSTREE_HPP_
#define _SPLITTER_NEWSTREE_HPP_
#ifndef _IMAGELIST_FOLDERTREE_HPP_
#include <imagelst/ftree.hpp>
#endif

class NewsTree : public FolderTree
{
public:
  NewsTree(GUIWindow &parentWindow,const Rect &winRect,int controlID);
	virtual ~NewsTree();
private:
	enum ItemType{GroupNode=1,RootNode,NewsNode};
	CallbackData::ReturnType selChangedHandler(CallbackData &cbData);
  CallbackData::ReturnType selChangingHandler(CallbackData &cbData);
	CallbackData::ReturnType itemExpandingHandler(CallbackData &cbData);
	CallbackData::ReturnType itemExpandedHandler(CallbackData &cbData);
	CallbackData::ReturnType beginDragHandler(CallbackData &cbData);
  DWORD makeItemID(int id,int index);
  ItemType getItemType(DWORD itemID);
  DWORD getIndex(DWORD itemID);
  void addItems();
  void loadGroups(Block<String> &strLines);

	Callback<NewsTree> mSelChangedHandler;
	Callback<NewsTree> mSelChangingHandler;
	Callback<NewsTree> mItemExpandingHandler;
	Callback<NewsTree> mItemExpandedHandler;
	Callback<NewsTree> mBeginDragHandler;
};

inline
DWORD NewsTree::makeItemID(int id,int index)
{
  return (id<<16)|index;
}

inline
NewsTree::ItemType NewsTree::getItemType(DWORD itemID)
{
  return ItemType(itemID>>16);
}

inline
DWORD NewsTree::getIndex(DWORD itemID)
{
  return (itemID&0xFFFF);
}
#endif