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#ifndef __com_sun_star_accessibility_XAccessibleRelationSet_idl__
#define __com_sun_star_accessibility_XAccessibleRelationSet_idl__

#include <com/sun/star/accessibility/AccessibleRelation.idl>
#include <com/sun/star/uno/XInterface.idl>
#include <com/sun/star/lang/IndexOutOfBoundsException.idl>

module com { module sun { module star { module accessibility {

/** Implement this interface to give access to an object's set of relations.

    <p>Such relation are modeled with the AccessibleRelation
    structure.  This interface is used for representing sets of relations
    between Accessible objects.  Most of the convenience
    methods of the corresponding AccessibleRelationSet interface of the Java
    Accessibility API have been removed from this interface in order to
    clean it up.  These methods are add(),
    addAll(), clear(), and
    remove().  The other methods have been renamed to achieve
    a greater conformance with the other accessibility interfaces.</p>

    @since OOo 1.1.2
*/
interface XAccessibleRelationSet : ::com::sun::star::uno::XInterface
{
    /** Returns the number of relations in this relation set.

        @return
            Returns the number of relations or zero if there are none.
    */
    long getRelationCount ();

    /** Returns the relation of this relation set that is specified by
        the given index.

        @param nIndex
            This index specifies the relation to return.

        @return
            For a valid index, i.e. inside the range 0 to the number of
            relations minus one, the returned value is the requested
            relation.  If the index is invalid then the returned relation
            has the type INVALID.

    */
    AccessibleRelation getRelation ([in] long nIndex)
        raises (::com::sun::star::lang::IndexOutOfBoundsException);

    /** Tests whether the relation set contains a relation matching the
        specified key.

        @param aRelationType
            The type of relation to look for in this set of relations.  This
            has to be one of the constants of
            AccessibleRelationType.

        @return
            Returns `TRUE` if there is a (at least one) relation of the
            given type and `FALSE` if there is no such relation in the set.
    */
    boolean containsRelation ([in] short aRelationType);

    /** Retrieve and return the relation with the given relation type.

        @param aRelationType
            The type of the relation to return.  This has to be one of the
            constants of AccessibleRelationType.

        @return
            If a relation with the given type could be found than (a copy
            of) this relation is returned.  Otherwise a relation with the
            type INVALID is returned.
    */
    AccessibleRelation getRelationByType ([in] short aRelationType);
};

}; }; }; };

#endif

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