summaryrefslogblamecommitdiff
path: root/src/gui/itemcontainer.h
blob: 6ee76885dbe48128fd9a7964dae0e6aae1b893bc (plain) (tree)


















                                                                             




                              

                                    
                                     
 

               


                



                            
 
   
                                                                       


               

                                                                    
 


                                                
           
                                            






                                 




                                                 




                                           
                                                   
           
                                                    

           

                               
                                                  
 
           
                                     
           
                                
 
           
                                      

                          
 



                                                                            
                                                                   







                                                                              
                                                                      



                                        
            
           
                                                                                             
           
                                             

           

                                                                        
                                  

           

                                                         
                                 

           

                                                                         
                                           
 
                              
                       
                               
                                                                                                   
 
                      
 
                                                      


                                    


      
/*
 *  The Mana World
 *  Copyright 2004 The Mana World Development Team
 *
 *  This file is part of The Mana World.
 *
 *  The Mana World is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  The Mana World is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with The Mana World; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef _TMW_ITEMCONTAINER_H__
#define _TMW_ITEMCONTAINER_H__

#include <guichan/mouselistener.hpp>
#include <guichan/widget.hpp>
#include <guichan/widgetlistener.hpp>

#include <list>

class Image;
class Inventory;
class Item;

namespace gcn {
    class SelectionListener;
}

/**
 * An item container. Used to show items in inventory and trade dialog.
 *
 * \ingroup GUI
 */
class ItemContainer : public gcn::Widget, public gcn::MouseListener,
    public gcn::WidgetListener
{
    public:
        /**
         * Constructor. Initializes the graphic.
         */
        ItemContainer(Inventory *inventory);

        /**
         * Destructor.
         */
        virtual ~ItemContainer();

        /**
         * Handles the logic of the ItemContainer
         */
        void logic();

        /**
         * Draws the items.
         */
        void draw(gcn::Graphics *graphics);

        /**
         * Called whenever the widget changes size.
         */
        void widgetResized(const gcn::Event &event);

        /**
         * Handles mouse click.
         */
        void mousePressed(gcn::MouseEvent &event);

        /**
         * Returns the selected item.
         */
        Item* getSelectedItem();

        /**
         * Sets selected item to NULL.
         */
        void selectNone();

        /**
         * Adds a listener to the list that's notified each time a change to
         * the selection occurs.
         */
        void addSelectionListener(gcn::SelectionListener *listener)
        {
            mListeners.push_back(listener);
        }

        /**
         * Removes a listener from the list that's notified each time a change
         * to the selection occurs.
         */
        void removeSelectionListener(gcn::SelectionListener *listener)
        {
            mListeners.remove(listener);
        }

    private:
        /**
         * Sets the currently selected item.  Invalid (e.g., negative) indices set `no item'.
         */
        void setSelectedItemIndex(int index);

        /**
         * Find the current item index by the most recently used item ID
         */
        void refindSelectedItem();

        /**
         * Determine and set the height of the container.
         */
        void recalculateHeight();

        /**
         * Sends out selection events to the list of selection listeners.
         */
        void distributeValueChangedEvent();

        Inventory *mInventory;
        Image *mSelImg;
        int mSelectedItemIndex;
        int mLastSelectedItemId;  // last selected item ID.  If we lose the item, find again by ID.

        int mMaxItems;

        std::list<gcn::SelectionListener*> mListeners;

        static const int gridWidth;
        static const int gridHeight;
};

#endif