/*
    listview.h
    Copyright (C) 2007 Acekard, www.acekard.com
    Copyright (C) 2007-2009 somebody
    Copyright (C) 2009 yellow wood goblin

    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 3 of the License, or
    (at your option) 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, see <http://www.gnu.org/licenses/>.
*/

#ifndef _AKUI_LISTVIEW_H_
#define _AKUI_LISTVIEW_H_

#include <string>
#include <vector>
#include "window.h"

namespace akui
{
class cListColumn
{
public:
    cListColumn() : index(0), width(0), offset(0), text("") {}

    u32            index;
    u16            width;
    u16            offset;
    std::string text;
};

class cListItem
{
  protected:
    std::string _text;
    u32 _lines;
  public:
    cListItem(): _text(""),_lines(1),index(0),column(0),imageId(0),param(0) {}
    u32 index;
    u32 column;
    u32 imageId;
    u32 param;
    const std::string& text(void)const {return _text;}
    u32 lines(void)const {return _lines;}
    void setText(const std::string& text);
};

class cListView : public cWindow
{
public:

    cListView( s32 x, s32 y, u32 w, u32 h, cWindow * parent, const std::string & text );

    virtual ~cListView() {}

    typedef std::vector< cListItem > itemVector; // a column

public:

    class cOwnerDraw
    {
      public:
        size_t _row;
        size_t _col;
        cPoint _position;
        cSize _size;
        s16 _textY;
        u16 _textHeight;
        const char* _text;
        GRAPHICS_ENGINE _engine;
        cOwnerDraw(size_t row,size_t col,const cPoint& position,const cSize& size,s16 textY,u16 textHeight,const char* text,GRAPHICS_ENGINE engine): _row(row),_col(col),_position(position),_size(size),_textY(textY),_textHeight(textHeight),_text(text),_engine(engine) {};
    };

public:

    void draw();

    bool insertColumn( size_t index, const std::string & text, u8 width );

    bool insertRow( size_t index, const std::vector< std::string > & text );

    void removeRow( size_t index ); // return id of the item next to the removed item

    void removeAllRows();

    u32 getRowCount() { return _rows.size(); }

    void setRowHeight( u16 height ) { _rowHeight = height; setListViewSize( _size.x, _size.y ); }

    void setListViewSize( u16 w, u16 h ) {
        setSize( cSize( w, h ) );
        _visibleRowCount = h / _rowHeight;
        //if( _visibleRowCount > _rows.size() ) _visibleRowCount = _rows.size();
    }

    void arangeColumnsSize();

    void selectRow( int id );

    u32 firstVisibleRowId(void) { return _firstVisibleRowId; }

    u32 selectedRowId(void) { return _selectedRowId; }

    void selectNext() { selectRow( _selectedRowId + 1 ); }

    void selectPrev() { selectRow( _selectedRowId - 1 ); }

    u32 rowBelowPoint( const cPoint & pt );

    void scrollTo( int id );

    u32 visibleRowCount() { return _visibleRowCount; }

    cWindow& loadAppearance(const std::string& aFileName );

    bool process( const akui::cMessage & msg );

    inline void setColors(u16 textColor,u16 textColorHilight,u16 selectionBarColor1,u16 selectionBarColor2) {_textColor=textColor;_textColorHilight=textColorHilight;_selectionBarColor1=selectionBarColor1;_selectionBarColor2=selectionBarColor2;};

    void setFirstVisibleIdAndSelectRow(u32 first,u32 row);

    Signal1< u32 > selectedRowClicked;

    Signal1< u32 > selectChanged;

    Signal1< u32 > scrolled;

    Signal1<const cOwnerDraw&> ownerDraw;

protected:

    virtual void onSelectChanged( u32 index ) {}

    virtual void onSelectedRowClicked( u32 index ) {}

    virtual void onScrolled( u32 index ) {}

    bool processTouchMessage( const akui::cTouchMessage & msg );

protected:

    void drawSelectionBar();

    void drawText();

protected:

    std::string    _text;
    u16        _rowHeight;
    u16        _textColor;
    u16        _textColorHilight;
    u16        _selectionBarColor1;
    u16        _selectionBarColor2;
    u16        _selectionBarOpacity;

    u32        _selectedRowId;
    u32        _firstVisibleRowId;
    u32        _visibleRowCount;
    u16        _rowsPerpage;
    bool    _touchMovedAfterTouchDown;

    std::vector< cListColumn >        _columns;
    std::vector< itemVector >        _rows;
};

}
#endif//_LISTVIEW_H_