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#include <IBlockCursor.hxx>
#include <viscrs.hxx>
#include "BlockCursor.hxx"

/** The implementation of the block cursor interface

    It's simply an aggregation of a SwShellCrsr and a rectangle defined by
    a start and an end point.
*/
class SwBlockCursor : public IBlockCursor
{
    SwShellCrsr aCursor;
    Point *pStartPt;
    Point *pEndPt;
public:
    SwBlockCursor( const SwCrsrShell& rCrsrSh, const SwPosition &rPos ) :
        aCursor( rCrsrSh, rPos ), pStartPt(0), pEndPt(0) {}
    virtual SwShellCrsr& getShellCrsr();
    virtual void setStartPoint( const Point &rPt );
    virtual void setEndPoint( const Point &rPt );
    virtual const Point* getStartPoint() const;
    virtual const Point* getEndPoint() const;
    virtual void clearPoints();
    virtual ~SwBlockCursor();
};

SwBlockCursor::~SwBlockCursor()
{
    delete pStartPt;
    delete pEndPt;
}

SwShellCrsr& SwBlockCursor::getShellCrsr()
{
    return aCursor;
}

void SwBlockCursor::setStartPoint( const Point &rPt )
{
    if( pStartPt )
        *pStartPt = rPt;
    else
        pStartPt = new Point( rPt );
}

void SwBlockCursor::setEndPoint( const Point &rPt )
{
    if( pEndPt )
        *pEndPt = rPt;
    else
        pEndPt = new Point( rPt );
}

const Point* SwBlockCursor::getStartPoint() const
{
    return pStartPt;
}

const Point* SwBlockCursor::getEndPoint() const
{
    return pEndPt;
}

void SwBlockCursor::clearPoints()
{
    delete pStartPt;
    delete pEndPt;
    pStartPt = 0;
    pEndPt = 0;
}

IBlockCursor *createBlockCursor( const SwCrsrShell& rCrsrSh, const SwPosition &rPos )
{
    return new SwBlockCursor( rCrsrSh, rPos );
}

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