dropdown.h

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/*      _______   __   __   __   ______   __   __   _______   __   __                 
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 *
 * Copyright (c) 2004, 2005 darkbits                        Js_./
 * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
 * Olof Naess閚 a.k.a jansem/yakslem                _asww7!uY`>  )\a//
 *                                                 _Qhm`] _f "'c  1!5m
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#ifndef GCN_DROPDOWN_HPP
#define GCN_DROPDOWN_HPP

#include "guichan/basiccontainer.h"
#include "guichan/focushandler.h"
#include "guichan/keylistener.h"
#include "guichan/listmodel.h"
#include "guichan/mouselistener.h"
#include "guichan/platform.h"
#include "guichan/widgets/listbox.h"
#include "guichan/widgets/scrollarea.h"

namespace gcn
{
    /**
     * A drop down box from which you can select different values. It is one of
     * the most complicated Widgets you will find in Guichan. For drawing the
     * DroppedDown box it uses one ScrollArea and one ListBox. It also uses an
     * internal FocusHandler to handle the focus of the internal ScollArea and
     * ListBox. DropDown uses a ListModel to handle the list. To be able to use
     * DropDown you must give DropDown an implemented ListModel which represents
     * your list.
     */
    class GCN_CORE_DECLSPEC DropDown :
        public BasicContainer,
        public MouseListener,
        public KeyListener,
        public ActionListener
    {
    public:
        /**
         * Constructor.
         */
        DropDown();

        /**
         * Contructor.
         *
         * @param listModel the ListModel to use.
         * @see ListModel.
         */         
        DropDown(ListModel *listModel);
        
        /**
         * Contructor.
         *
         * @param listModel the ListModel to use.
         * @param scrollArea the ScrollArea to use.
         * @param listBox the listBox to use.
         * @see ListModel, ScrollArea, ListBox.
         */         
        DropDown(ListModel *listModel,
                 ScrollArea *scrollArea,
                 ListBox *listBox);

        /**
         * Destructor.
         */
        virtual ~DropDown();
    
        /**
         * Gets the index int the ListModel of the selected element.
         *
         * @return the selected element.
         */
        virtual int getSelected();

        /**
         * Sets the ListModel index of the selected element.
         *
         * @param selected the ListModel index of the selected element.
         */
        virtual void setSelected(int selected);

        /**
         * Sets the ListModel to use.
         *
         * @param listModel the ListModel to use.
         */
        virtual void setListModel(ListModel *listModel);

        /**
         * Gets the ListModel used.
         *
         * @return the ListModel used.
         */
        virtual ListModel *getListModel();

        /**
         * Sets the ScrollArea to use.
         *
         * @param scrollArea the ScrollArea to use.
         */
        virtual void setScrollArea(ScrollArea* scrollArea);

        /**
         * Gets the ScrollArea used.
         *
         * @return the ScrollArea used.
         */
        virtual ScrollArea *getScrollArea();

        /**
         * Sets the ListBox to use.
         *
         * @param listBox the ListBox to use.
         */
        virtual void setListBox(ListBox* listBox);

        /**
         * Gets the ListBox used.
         *
         * @return the ListBox used.
         */
        virtual ListBox *getListBox();

        /**
         * Adjusts the height of the DropDown fitting it's parents height.
         */
        virtual void adjustHeight();


        // Inherited from Widget
        
        virtual void draw(Graphics* graphics);

        virtual void drawBorder(Graphics* graphics);
        
        virtual bool _keyInputMessage(const KeyInput& keyInput);
        
        virtual void logic();
        
        virtual void _mouseInputMessage(const MouseInput &mouseInput);

        virtual void lostFocus();

        virtual void setBaseColor(const Color& color);

        virtual void setBackgroundColor(const Color& color);

        virtual void setForegroundColor(const Color& color);

        
        // Inherited from BasicContainer

        virtual void moveToTop(Widget* widget);

        virtual void moveToBottom(Widget* widget);

        virtual void _announceDeath(Widget* widget);

        virtual void getDrawSize(int& width, int& height, Widget* widget);


        // Inherited from ActionListener
        
        virtual void action(const std::string& eventId);


        // Inherited from KeyListener
        
        virtual bool keyPress(const Key& key);


        // Inherited from MouseListener
        
        virtual void mousePress(int x, int y, int button);
    
        virtual void mouseRelease(int x, int y, int button);    

        virtual void setFont(Font *font);
        
    protected:
        /**
         * Draws the button with the little down arrow.
         *
         * @param graphics a Graphics object to draw with.
         */
        virtual void drawButton(Graphics *graphics);

        /**
         * Sets the DropDown Widget to dropped-down mode.
         */
        virtual void dropDown();

        /**
         * Sets the DropDown Widget to folded-up mode.
         */
        virtual void foldUp();
    
        bool mDroppedDown;
        bool mPushed;
        int mOldH;
        ScrollArea* mScrollArea;
        ListBox* mListBox;
        ScrollArea* mDefaultScrollArea;
        ListBox* mDefaultListBox;
        FocusHandler mFocusHandler;    
    };  
}

#endif // end GCN_DROPDOWN_HPP