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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 <list>
#include <guichan/mouselistener.hpp>
#include <guichan/widget.hpp>
#include <guichan/widgetlistener.hpp>
class Image;
class Inventory;
class Item;
class ItemPopup;
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, int offset);
/**
* 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:
void mouseExited(gcn::MouseEvent &event);
void mouseMoved(gcn::MouseEvent &event);
/**
* 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();
/**
* Gets the slot index based on the cursor position.
*
* @param posX The X Coordinate position.
* @param posY The Y Coordinate position.
* @return The slot index on success, -1 on failure.
*/
int getSlotIndex(int posX, int posY) const;
Inventory *mInventory;
Image *mSelImg;
int mSelectedItemIndex;
int mLastSelectedItemId; // last selected item ID. If we lose the item, find again by ID.
int mMaxItems;
int mOffset;
ItemPopup *mItemPopup;
std::list<gcn::SelectionListener*> mListeners;
static const int gridWidth;
static const int gridHeight;
};
#endif
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