wg_listbox.h

// wg_listbox.h
//
// CListBox interface
//
//
// Copyright (c) 2002-2004 Rob Wiskow
// rob-dev@boxedchaos.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//


#ifndef _WG_LISTBOX_H_
#define _WG_LISTBOX_H_

#include "wg_window.h"
#include "wg_painter.h"
#include "wg_renderedstring.h"
#include "wg_scrollbar.h"
#include <vector>


namespace wGui
{


struct SListItem
{
public:
     SListItem(std::wstring sItemTextIn, void* pItemDataIn = 0, CRGBColor ItemColorIn = DEFAULT_LINE_COLOR) :
          sItemText(sItemTextIn), pItemData(pItemDataIn), ItemColor(ItemColorIn) { }

     std::wstring sItemText;  
     void* pItemData;  
     CRGBColor ItemColor;  
};




class CListBox : public CWindow
{
public:
     CListBox(const CRect& WindowRect, CWindow* pParent, bool bSingleSelection = false, unsigned int iItemHeight = 15, CFontEngine* pFontEngine = 0);

     virtual ~CListBox(void);

     unsigned int GetItemHeight(void) { return m_iItemHeight; }

     void SetItemHeight(unsigned int iItemHeight);

     int AddItem(SListItem ListItem);

     SListItem& GetItem(int iItemIndex) { return m_Items.at(iItemIndex); }

     void RemoveItem(int iItemIndex);

     void ClearItems(void);

     int Size(void) { return stdex::safe_static_cast<int>(m_Items.size()); }

     bool IsSelected(int iItemIndex)
          { return (iItemIndex >= 0 && iItemIndex < stdex::safe_static_cast<int>(m_SelectedItems.size()) && m_SelectedItems.at(iItemIndex)); }

     int GetFirstSelectedIndex(void) const;

     void SetSelection(int iItemIndex, bool bSelected);

     void SetAllSelections(bool bSelected);

     void SetDropDown(CWindow* pDropDown) { m_pDropDown = pDropDown; }


     // CWindow overrides
     virtual void Draw(void) const;

     virtual void SetWindowRect(const CRect& WindowRect);

     virtual void PaintToSurface(SDL_Surface& ScreenSurface, SDL_Surface& FloatingSurface, const CPoint& Offset) const;

     virtual bool OnMouseButtonDown(CPoint Point, unsigned int Button);

     virtual bool OnMouseButtonUp(CPoint Point, unsigned int Button);


     // CMessageClient overrides
     virtual bool HandleMessage(CMessage* pMessage);


protected:
     CFontEngine* m_pFontEngine;  
     CScrollBar* m_pVScrollbar;  
     unsigned int m_iItemHeight;  
     int m_iFocusedItem;  
     std::vector<SListItem> m_Items;  
     std::vector<bool> m_SelectedItems;  
     std::vector<CRenderedString> m_RenderedStrings;  
     const bool m_bSingleSelection;  
     CWindow* m_pDropDown;  


private:
     void operator=(CListBox) { }  
};

}


#include "unit_tests/wg_listbox_unittests.h"

#endif  // _WG_LISTBOX_H_

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