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splitter/NewsTree.hpp

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+#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
+