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#ifndef PAGE_LIST_WATCHER_HXX
#define PAGE_LIST_WATCHER_HXX

#include "pres.hxx"
#include <sal/types.h>
#include <vector>

class SdPage;
class SdrModel;

/** Maintain a map of page indices to page objects for faster access that
    remains valid during deletions and insertions of pages (#109538#).
*/
class ImpPageListWatcher
{
protected:
    // typedefs for a vector of SdPages
    typedef ::std::vector< SdPage* > SdPageVector;

    const SdrModel&                 mrModel;

    SdPageVector                    maPageVectorStandard;
    SdPageVector                    maPageVectorNotes;
    SdPage*                         mpHandoutPage;

    sal_Bool                        mbPageListValid;

    void ImpRecreateSortedPageListOnDemand();
    virtual sal_uInt32 ImpGetPageCount() const = 0;

    /** Return the page with the given index.
        @param nIndex
            When given an invalid index then NULL is returned.
    */
    virtual SdPage* ImpGetPage (sal_uInt32 nIndex) const = 0;

public:
    ImpPageListWatcher(const SdrModel& rModel);
    virtual ~ImpPageListWatcher();

    void Invalidate() { mbPageListValid = sal_False; }
    SdPage* GetSdPage(PageKind ePgKind, sal_uInt32 nPgNum = 0L);
    sal_uInt32 GetSdPageCount(PageKind ePgKind);
};

//////////////////////////////////////////////////////////////////////////////

class ImpDrawPageListWatcher : public ImpPageListWatcher
{
protected:
    virtual sal_uInt32 ImpGetPageCount() const;
    virtual SdPage* ImpGetPage(sal_uInt32 nIndex) const;

public:
    ImpDrawPageListWatcher(const SdrModel& rModel);
    virtual ~ImpDrawPageListWatcher();
};

//////////////////////////////////////////////////////////////////////////////

class ImpMasterPageListWatcher : public ImpPageListWatcher
{
protected:
    virtual sal_uInt32 ImpGetPageCount() const;
    virtual SdPage* ImpGetPage(sal_uInt32 nIndex) const;

public:
    ImpMasterPageListWatcher(const SdrModel& rModel);
    virtual ~ImpMasterPageListWatcher();
};

#endif

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