tmw/src/gui/itemcontainer.h

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/*
 *  The Mana World
 *  Copyright (C) 2004  The Mana World Development Team
 *
 *  This file is part of The Mana World.
 *
 *  This program 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.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef ITEMCONTAINER_H
#define ITEMCONTAINER_H

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

#include <list>

class Image;
class Inventory;
class Item;
class ItemPopup;

namespace gcn {
    class SelectionListener;
}

class ItemContainer : public gcn::Widget,
                      public gcn::KeyListener,
                      public gcn::MouseListener,
                      public gcn::WidgetListener
{
    public:
        ItemContainer(Inventory *inventory, bool forceQuantity = false);

        virtual ~ItemContainer();

        void draw(gcn::Graphics *graphics);

        // KeyListener
        void keyPressed(gcn::KeyEvent &event);
        void keyReleased(gcn::KeyEvent &event);

        // MouseListener
        void mousePressed(gcn::MouseEvent &event);
        void mouseDragged(gcn::MouseEvent &event);
        void mouseReleased(gcn::MouseEvent &event);
        void mouseMoved(gcn::MouseEvent &event);
        void mouseExited(gcn::MouseEvent &event);

        // WidgetListener
        void widgetResized(const gcn::Event &event);

        Item *getSelectedItem() const
        { return mSelectedItem; }

        void selectNone();

        void addSelectionListener(gcn::SelectionListener *listener)
        {
            mSelectionListeners.push_back(listener);
        }

        void removeSelectionListener(gcn::SelectionListener *listener)
        {
            mSelectionListeners.remove(listener);
        }

    private:
        enum Direction
        {
            Left,
            Right,
            Up,
            Down
        };

        enum SelectionState
        {
            SEL_NONE = 0,
            SEL_SELECTED,
            SEL_SELECTING,
            SEL_DESELECTING,
            SEL_DRAGGING
        };

        void keyAction();

        void moveHighlight(Direction direction);

        void setSelectedItem(Item *item);

        void refindSelectedItem();

        void recalculateHeight();

        void distributeValueChangedEvent();

        int getSlotIndex(int x, int y) const;

        Inventory *mInventory;
        int mGridColumns, mGridRows;
        Image *mSelImg;
        Item *mSelectedItem, *mHighlightedItem;
        SelectionState mSelectionStatus;
        bool mForceQuantity;
        bool mSwapItems;
        bool mDescItems;
        int mDragPosX, mDragPosY;

        ItemPopup *mItemPopup;

        typedef std::list<gcn::SelectionListener*> SelectionListenerList;
        typedef SelectionListenerList::iterator SelectionListenerIterator;

        SelectionListenerList mSelectionListeners;
};

#endif

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