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 *
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#ifndef INCLUDED_CHART2_SOURCE_VIEW_INC_MINIMUMANDMAXIMUMSUPPLIER_HXX
#define INCLUDED_CHART2_SOURCE_VIEW_INC_MINIMUMANDMAXIMUMSUPPLIER_HXX

#include <sal/types.h>
#include <tools/date.hxx>
#include <set>

namespace chart
{

class MinimumAndMaximumSupplier
{
public:
    virtual double getMinimumX() = 0;
    virtual double getMaximumX() = 0;

    //problem y maybe not is always the second border to ask for
    virtual double getMinimumYInRange( double fMinimumX, double fMaximumX, sal_Int32 nAxisIndex ) = 0;
    virtual double getMaximumYInRange( double fMinimumX, double fMaximumX, sal_Int32 nAxisIndex ) = 0;

    //problem: z maybe not independent in future
    virtual double getMinimumZ() = 0;
    virtual double getMaximumZ() = 0;

    virtual bool isExpandBorderToIncrementRhythm( sal_Int32 nDimensionIndex ) = 0;
    virtual bool isExpandIfValuesCloseToBorder( sal_Int32 nDimensionIndex ) = 0;
    virtual bool isExpandWideValuesToZero( sal_Int32 nDimensionIndex ) = 0;
    virtual bool isExpandNarrowValuesTowardZero( sal_Int32 nDimensionIndex ) = 0;
    virtual bool isSeparateStackingForDifferentSigns( sal_Int32 nDimensionIndex ) = 0;

    //return a constant out of css::chart::TimeUnit that allows to display the smallest distance between occurring dates
    virtual long calculateTimeResolutionOnXAxis() = 0;
    virtual void setTimeResolutionOnXAxis( long nTimeResolution, const Date& rNullDate ) = 0;

protected:
    ~MinimumAndMaximumSupplier() {}
};

class MergedMinimumAndMaximumSupplier : public MinimumAndMaximumSupplier
{
public:
    MergedMinimumAndMaximumSupplier();
    virtual ~MergedMinimumAndMaximumSupplier();

    void addMinimumAndMaximumSupplier( MinimumAndMaximumSupplier* pMinimumAndMaximumSupplier );
    bool hasMinimumAndMaximumSupplier( MinimumAndMaximumSupplier* pMinimumAndMaximumSupplier );
    void clearMinimumAndMaximumSupplierList();

    //--MinimumAndMaximumSupplier
    virtual double getMinimumX() override;
    virtual double getMaximumX() override;
    virtual double getMinimumYInRange( double fMinimumX, double fMaximumX, sal_Int32 nAxisIndex ) override;
    virtual double getMaximumYInRange( double fMinimumX, double fMaximumX, sal_Int32 nAxisIndex ) override;
    virtual double getMinimumZ() override;
    virtual double getMaximumZ() override;

    virtual bool isExpandBorderToIncrementRhythm( sal_Int32 nDimensionIndex ) override;
    virtual bool isExpandIfValuesCloseToBorder( sal_Int32 nDimensionIndex ) override;
    virtual bool isExpandWideValuesToZero( sal_Int32 nDimensionIndex ) override;
    virtual bool isExpandNarrowValuesTowardZero( sal_Int32 nDimensionIndex ) override;
    virtual bool isSeparateStackingForDifferentSigns( sal_Int32 nDimensionIndex ) override;

    virtual long calculateTimeResolutionOnXAxis() override;
    virtual void setTimeResolutionOnXAxis( long nTimeResolution, const Date& rNullDate ) override;

private:
    typedef std::set< MinimumAndMaximumSupplier* > MinimumAndMaximumSupplierSet;
    MinimumAndMaximumSupplierSet m_aMinimumAndMaximumSupplierList;
};

} //namespace chart
#endif

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