class ContactListWindow :
		public CFrameWindowImpl<ContactListWindow, CWindow, CFrameWinTraits>
	{
	public:
		ContactListWindow(ContactListPrefs& prefs);
		~ContactListWindow();

		DECLARE_FRAME_WND_CLASS(L"ContactListWindow", 0)

		BEGIN_MSG_MAP(ContactListWindow)
			COMMAND_ID_HANDLER_EX(ID_OPENIM_ACCOUNTS, OnAccounts)
			COMMAND_ID_HANDLER_EX(ID_OPENIM_OPTIONS, OnOptions)
			COMMAND_ID_HANDLER_EX(ID_OPENIM_EXIT, OnExit)
			COMMAND_ID_HANDLER_EX(ID_VIEW_SHOWOFFLINECONTACTS, OnShowOfflineContacts)
			COMMAND_ID_HANDLER_EX(ID_HELP_FEEDBACK, OnFeedback)
			COMMAND_ID_HANDLER_EX(ID_HELP_ABOUT, OnAbout)
			MSG_WM_CLOSE(OnClose)
			MSG_WM_CONTEXTMENU(OnContextMenu)
			MSG_WM_CREATE(OnCreate)
			MESSAGE_HANDLER(WM_DEFERREDUPDATE, OnDeferredUpdate)
			//MSG_WM_DISPLAYCHANGE(OnDisplayChange)
			MESSAGE_HANDLER(WM_EDITITEM, OnEditItem)
			MESSAGE_HANDLER(WM_SHOWSTATUSMENU, OnShowStatusMenu)
			MSG_WM_LBUTTONUP(OnLButtonUp)
			MSG_WM_RBUTTONDOWN(OnRButtonDown)
			MSG_WM_PARENTNOTIFY(OnParentNotify)
			MSG_WM_MOUSEMOVE(OnMouseMove)
			MSG_WM_MENUSELECT(OnMenuSelect)
			MSG_WM_SIZE(OnSize)
			MESSAGE_HANDLER(WM_STARTCONVERSATION, OnStartConversation)
			MESSAGE_HANDLER(WM_TIMER, OnTimer)
			NOTIFY_CODE_HANDLER(NM_CUSTOMDRAW, OnCustomDraw)
			NOTIFY_CODE_HANDLER(NM_DBLCLK, OnDoubleClick)
			NOTIFY_CODE_HANDLER(TTN_GETDISPINFO, OnToolTipGetDispInfo);
			NOTIFY_CODE_HANDLER(TVN_KEYDOWN, OnKeyDown)
			NOTIFY_CODE_HANDLER(TVN_BEGINDRAG, OnBeginDrag)
			NOTIFY_CODE_HANDLER(TVN_BEGINLABELEDIT, OnBeginLabelEdit)
			NOTIFY_CODE_HANDLER(TVN_ENDLABELEDIT, OnEndLabelEdit)
			CHAIN_MSG_MAP(CFrameWindowImpl<ContactListWindow>)
		END_MSG_MAP()
	
		void			ApplyPreferences();
		void			EnforceConstraints();
		void			OnEnumWindows(HWND wnd);

	private:
		enum NodeType
		{
			AccountNodeType,
			ContactNodeType,
			GroupNodeType
		};

		template<typename T>
		struct Node
		{
			NodeType	Type;
			T*			Data;
			CTreeItem	Item;
			HTREEITEM	Parent;
			int			Position;
		};

		struct AccountNode :
			public Node<Account>
		{
			UINT_PTR	SignOnTimer;
			bool		SigningOn;

		};

		typedef std::deque<Node<Contact>*>	ContactNodes;

		bool			CanMove(CTreeItem movingItem, CTreeItem targetItem);
		void			Expand(CTreeItem root);
		Account*		GetAccountFromNode(Node<void>*);
		int				GetIconIndex(Account* account);
		int				GetIconIndex(Contact* contact);
		String			GetLabel(Account*);
		String			GetLabel(Contact*);
		String			GetLabel(Group*);
		HTREEITEM		GetInsertPosition(HTREEITEM parent, int position);
		void			OnAbout(UINT, int, HWND);
		void			OnAccounts(UINT, int, HWND);
		void			OnAccountConnect(AccountConnectEvent&);
		void			OnAccountConnectError(AccountConnectErrorEvent&);
		void			OnAccountCreate(AccountCreateEvent&);
		void			OnAccountDestroy(AccountDestroyEvent&);
		void			OnAccountDisconnect(AccountDisconnectEvent&);
		void			OnAccountError(AccountErrorEvent&);
		void			OnAccountStatusUpdate(AccountStatusUpdateEvent&);
		void			OnAccountUpdate(AccountUpdateEvent&);
		void			OnAppGlobalSetStatus(AppGlobalSetStatusEvent&);
		LRESULT			OnBeginDrag(WPARAM, NMHDR* nmhdr, BOOL&);
		LRESULT			OnBeginLabelEdit(WPARAM, NMHDR* nmhdr, BOOL&);
		void			OnClose();
		void			OnContactCreate(ContactCreateEvent&);
		void			OnContactDelete(Node<Contact>* node);
		void			OnContactDestroy(ContactDestroyEvent&);
		void			OnContactUpdate(ContactUpdateEvent&);
		void			OnContextMenu(HWND, CPoint);
		void			OnContextMenuAccount(AccountNode* node, CPoint pt);
		void			OnContextMenuContact(Node<Contact>* node, CPoint pt);
		void			OnContextMenuGroup(Node<Group>* node, CPoint pt);
		LRESULT			OnCreate(CREATESTRUCT*);
		LRESULT			OnCustomDraw(WPARAM, NMHDR* nmhdr, BOOL&);
		LRESULT			OnDeferredUpdate(UINT, WPARAM, LPARAM, BOOL&);
		void			OnDisplayChange(UINT imageDepth, CSize resolution);
		LRESULT			OnDoubleClick(WPARAM, NMHDR* nmhdr, BOOL&);
		LRESULT			OnEditItem(UINT, WPARAM, LPARAM, BOOL&);
		LRESULT			OnEndLabelEdit(WPARAM, NMHDR* nmhdr, BOOL&);
		void			OnExit(UINT, int, HWND);
		void			OnFeedback(UINT, int, HWND);
		void			OnFinalMessage(HWND);
		void			OnGroupCreate(GroupCreateEvent&);
		void			OnGroupDelete(Node<Group>* node);
		void			OnGroupDestroy(GroupDestroyEvent&);
		void			OnGroupUpdate(GroupUpdateEvent&);
		LRESULT			OnKeyDown(WPARAM, NMHDR* nmhdr, BOOL&);
		void			OnLButtonUp(UINT nFlags, CPoint point);
		void			OnRButtonDown(UINT nFlags, CPoint point);
		void			OnMenuSelect(UINT, UINT, HMENU ) {}
		void			OnMouseMove(UINT nFlags, CPoint point);
		void			OnOptions(UINT, int, HWND);
		void			OnParentNotify(UINT message, UINT /*msg2*/, LPARAM lParam);
		void			OnPreferencesUpdated(PreferencesUpdatedEvent&);
		void			OnSize(UINT, CSize);
		void			OnShowOfflineContacts(UINT, int, HWND);
		LRESULT			OnShowStatusMenu(UINT, WPARAM, LPARAM, BOOL&);
		void			OnShutdown(ShutdownEvent&);
		LRESULT			OnStartConversation(UINT, WPARAM, LPARAM, BOOL&);
		LRESULT			OnTimer(UINT, WPARAM, LPARAM, BOOL&);
		void			OnTimerEvent(TimerEvent&);
		LRESULT			OnToolTipGetDispInfo(WPARAM, NMHDR* nmhdr, BOOL&);
		void			Refresh(HTREEITEM item = TVI_ROOT);
		int				ShowContextMenu(CMenu& menu, CPoint where);
		void			Update(Account* account);
		void			Update(Contact* contact);
		void			Update(Group* group);
		void			Update(HTREEITEM item);

	private:
		enum Transaction
		{
			None,
			AddContact,
			AddGroup,
			RenameContact,
			RenameGroup
		};

		typedef std::map<String, AccountNode* >		AccountTable;
		typedef std::map<String, ContactNodes* >	ContactTable;	
		typedef std::map<String, Node<Group>* >		GroupTable;
	
		CTreeViewCtrlEx			m_tree;
		CMultiPaneStatusBarCtrl	m_statusBar;
		ImageMap				m_imageMap;
		CToolTipCtrl			m_toolTip;
		ContactListPrefs&		m_prefs;
		PreferencesPane			m_pane;
		Transaction				m_transaction;

		AccountTable			m_accounts;
		ContactTable			m_contacts;
		GroupTable				m_groups;

		CMenu					m_accountContextMenu;
		CMenu					m_contactContextMenu;
		CMenu					m_groupContextMenu;
		CMenu					m_treeContextMenu;		
		CMenu					m_statusChangeMenu;

		bool					m_dragging;
		CTreeItem				m_draggedItem;
		bool					m_disableAlwaysOnTop;
	};