ShapeTypeHandler.hxx

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#ifndef INCLUDED_SVX_SHAPETYPEHANDLER_HXX
#define INCLUDED_SVX_SHAPETYPEHANDLER_HXX

#include <svx/svxdllapi.h>

#include <rtl/ref.hxx>
#include <rtl/ustring.hxx>
#include <tools/long.hxx>
#include <unordered_map>
#include <vector>

namespace accessibility { class AccessibleShape; }
namespace accessibility { class AccessibleShapeInfo; }
namespace accessibility { class AccessibleShapeTreeInfo; }
namespace com::sun::star::drawing { class XShape; }
namespace com::sun::star::uno { template <typename > class Reference; }

namespace accessibility {

typedef int ShapeTypeId;

typedef AccessibleShape* (*tCreateFunction)
    (const AccessibleShapeInfo& rShapeInfo,
    const AccessibleShapeTreeInfo& rShapeTreeInfo,
    ShapeTypeId nId);

struct ShapeTypeDescriptor
{
    ShapeTypeId         mnShapeTypeId;
    OUString       msServiceName;
    tCreateFunction     maCreateFunction;
    ShapeTypeDescriptor (
        ShapeTypeId nId, const OUString& sName, tCreateFunction aFunction)
    :   mnShapeTypeId (nId),
        msServiceName (sName),
           maCreateFunction (aFunction)
    {}
    ShapeTypeDescriptor()
    :   mnShapeTypeId (-1),
        msServiceName (),
           maCreateFunction (nullptr)
    {}
};

class SVX_DLLPUBLIC ShapeTypeHandler final
{
public:
    enum { UNKNOWN_SHAPE_TYPE = 0 };

    static ShapeTypeHandler& Instance();

    ShapeTypeId GetTypeId (const OUString& aServiceName) const;

    ShapeTypeId GetTypeId (const css::uno::Reference<
        css::drawing::XShape>& rxShape) const;

    rtl::Reference<AccessibleShape>
        CreateAccessibleObject (
            const AccessibleShapeInfo& rShapeInfo,
            const AccessibleShapeTreeInfo& rShapeTreeInfo) const;

    void AddShapeTypeList (int nDescriptorCount,
        ShapeTypeDescriptor const aDescriptorList[]);

    static OUString CreateAccessibleBaseName (
        const css::uno::Reference< css::drawing::XShape >& rxShape);

private:
    // Declare default constructor, copy constructor, destructor, and
    // assignment operation protected so that no one accidentally creates a
    // second instance of this singleton class or deletes it.
    ShapeTypeHandler();
    ShapeTypeHandler (const ShapeTypeHandler& aHandler);             // never implemented, this is a singleton class
    ShapeTypeHandler& operator= (const ShapeTypeHandler& aHandler); // never implemented, this is a singleton class

    ~ShapeTypeHandler();

    static ShapeTypeHandler* instance;

    ::std::vector<ShapeTypeDescriptor> maShapeTypeDescriptorList;

    typedef std::unordered_map<OUString,ShapeTypeId> tServiceNameToSlotId;
    mutable tServiceNameToSlotId maServiceNameToSlotId;

    SVX_DLLPRIVATE tools::Long GetSlotId (const OUString& aServiceName) const;

    SVX_DLLPRIVATE tools::Long GetSlotId (const css::uno::Reference<
        css::drawing::XShape>& rxShape) const;
};

} // end of namespace accessible

#endif

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