ceguiitemlistbase.h

OGRE开发包的依赖包

	\return
		Nothing.
	*/
	void setAutoResizeEnabled(bool setting);


	/*!
	\brief
	Resize the ItemListBase to exactly fit the content that is attached to it.
	Return a Rect object describing, in un-clipped pixels, the window relative area
	that is to be used for rendering items.

	\return
	Nothing
	*/
	virtual	void	sizeToContent(void)		{sizeToContent_impl();}


    /*!
    \brief
        Triggers a ListContentsChanged event.
        These are not fired during initialisation for optimization purposes.
    */
    virtual void endInitialisation(void);


    /*!
    \brief
        method called to perform extended laying out of attached child windows.

        The system may call this at various times (like when it is resized for
        example), and it may be invoked directly where required.

    \return
        Nothing.
    */
    virtual void performChildWindowLayout(void);


    /*!
    \brief
        Return a Rect object describing, in un-clipped pixels, the window relative area
        that is to be used for rendering list items.

    \return
        Rect object describing the window relative area of the that is to be used for rendering
        the items.
    */
    Rect getItemRenderArea(void) const;

    /*!
    \brief
        Returns a pointer to the window that all items are directed too.
        
    \return
        A pointer to the content pane window, or 'this' if children are added
        directly to this window.
    */
    Window* getContentPane(void) const  {return d_pane;}

    /*!
    \brief
        Notify this ItemListBase that the given item was just clicked.
        Internal function - NOT to be used from client code.
    */
    virtual void notifyItemClicked(ItemEntry* li) {}

    /*!
    \brief
        Notify this ItemListBase that the given item just changed selection state.
        Internal function - NOT to be used from client code.
    */
    virtual void notifyItemSelectState(ItemEntry* li, bool state) {}

    /*!
    \brief
        Set whether the list should be sorted (by text).
    */
    void setSortEnabled(bool setting);

    /*!
    \brief
        Set mode to be used when sorting the list.
    \param mode
        SortMode enum.
    */
    void setSortMode(SortMode mode);

    /*!
    \brief
        Set a user callback as sorting function

    \param mode
        SortCallback
    */
    void setSortCallback(SortCallback cb);

    /*!
    \brief
        Sort the list.

    \param relayout
        True if the item layout should be redone after the sorting.
        False to only sort the internal list. Nothing more.

        This parameter defaults to true and should generally not be
        used in client code.
    */
    void sortList(bool relayout=true);

	/*************************************************************************
		Construction and Destruction
	*************************************************************************/
	/*!
	\brief
		Constructor for ItemListBase base class.
	*/
	ItemListBase(const String& type, const String& name);


	/*!
	\brief
		Destructor for ItemListBase base class.
	*/
	virtual ~ItemListBase(void);


protected:
	/*************************************************************************
		Abstract Implementation Functions (must be provided by derived class)
	*************************************************************************/
	/*!
	\brief
		Resize the ItemListBase to exactly fit the content that is attached to it.
		Return a Rect object describing, in un-clipped pixels, the window relative area
		that is to be used for rendering items.

	\return
		Nothing
	*/
	virtual void	sizeToContent_impl(void);


	/*!
	\brief
		Returns the Size in unclipped pixels of the content attached to this ItemListBase that is attached to it.

	\return
		Size object describing in unclipped pixels the size of the content ItemEntries attached to this menu.
	*/
	virtual Size getContentSize() const		= 0;


	/*!
	\brief
		Return a Rect object describing, in un-clipped pixels, the window relative area
		that is to be used for rendering list items.

	\return
		Rect object describing the window relative area of the that is to be used for rendering
		the items.
	*/
	//virtual	Rect	getItemRenderArea_impl(void) const		= 0;


	/*!
	\brief
		Setup size and position for the item widgets attached to this ItemListBase

	\return
		Nothing.
	*/
	virtual void	layoutItemWidgets()	= 0;


	/*************************************************************************
		Implementation Functions
	*************************************************************************/
	/*!
	\brief
		Remove all items from the list.

	\note
		Note that this will cause items with the 'DestroyedByParent' property set to 'true', to be deleted.

	\return
		- true if the list contents were changed.
		- false if the list contents were not changed (list already empty).
	*/
	bool	resetList_impl(void);

	/*!
	\brief
		Return whether this window was inherited from the given class name at some point in the inheritance hierarchy.

	\param class_name
		The class name that is to be checked.

	\return
		true if this window was inherited from \a class_name. false if not.
	*/
	virtual bool	testClassName_impl(const String& class_name) const
	{
		if (class_name=="ItemListBase")	return true;
		return Window::testClassName_impl(class_name);
	}

    // validate window renderer
    virtual bool    validateWindowRenderer(const String& name) const
    {
        return (name == EventNamespace);
    }

    /*!
    \brief
        Returns the SortCallback that's really going to be used for the sorting operation.
    */
    SortCallback getRealSortCallback(void) const;

	/*************************************************************************
		New event handlers
	*************************************************************************/
	/*!
	\brief
		Handler called internally when the list contents are changed
	*/
	virtual	void	onListContentsChanged(WindowEventArgs& e);

    /*!
    \brief
        Handler called internally when sorting gets enabled.
    */
    virtual void onSortEnabledChanged(WindowEventArgs& e);

    /*!
    \brief
        Handler called internally when the sorting mode is changed.
    */
    virtual void onSortModeChanged(WindowEventArgs& e);

	/*************************************************************************
		Overridden Event handlers
	*************************************************************************/
	//virtual void    onChildRemoved(WindowEventArgs& e);
    //virtual void    onDestructionStarted(WindowEventArgs& e);


	/*************************************************************************
		Implementation Data
	*************************************************************************/
	typedef	std::vector<ItemEntry*>	ItemEntryList;
	ItemEntryList	d_listItems;		//!< list of items in the list.

    //!< True if this ItemListBase widget should automatically resize to fit its content. False if not.
	bool d_autoResize;

    //!< Pointer to the content pane (for items), 0 if we're not using one
    Window* d_pane;

    //!< True if this ItemListBase is sorted. False if not.
    bool d_sortEnabled;
    //!< The current sorting mode applied if sorting is enabled.
    SortMode d_sortMode;
    //!< The user sort callback or 0 if none.
    SortCallback d_sortCallback;
    //!< True if the list needs to be resorted.
    bool d_resort;

private:
	/*************************************************************************
        Static Properties for this class
	*************************************************************************/
	static ItemListBaseProperties::AutoResizeEnabled	d_autoResizeEnabledProperty;
    static ItemListBaseProperties::SortEnabled d_sortEnabledProperty;
    static ItemListBaseProperties::SortMode d_sortModeProperty;

	/*************************************************************************
		Private methods
	*************************************************************************/
	void	addItemListBaseProperties(void);


	/*!
	\brief
		Add given window to child list at an appropriate position
	*/
	virtual void	addChild_impl(Window* wnd);

	/*!
	\brief
	    Handler to manage items being removed from the content pane.
	    If there is one!
	*/
    bool handle_PaneChildRemoved(const EventArgs& e);
};

} // End of  CEGUI namespace section


#if defined(_MSC_VER)
#	pragma warning(pop)
#endif

#endif	// end of guard _CEGUIItemListBase_h_