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 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
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#ifndef _UTL_ACCESSIBLERELATIONSETHELPER_HXX_
#define _UTL_ACCESSIBLERELATIONSETHELPER_HXX_

#include "unotools/unotoolsdllapi.h"

#ifndef _COM_SUN_STAR_ACCESSIBILITY_XACCESSIBLESSTATESET_HPP_
#include <com/sun/star/accessibility/XAccessibleRelationSet.hpp>
#endif
#include <com/sun/star/uno/Reference.hxx>
#include <cppuhelper/weak.hxx>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/lang/XTypeProvider.hpp>
#include <com/sun/star/lang/XServiceName.hpp>
#include <vos/mutex.hxx>
#include <cppuhelper/implbase1.hxx>
#include <comphelper/servicehelper.hxx>

class AccessibleRelationSetHelperImpl;

//=========================================================================
//= XAccessibleRelationSet helper classes
//=========================================================================

//... namespace utl .......................................................
namespace utl
{
//.........................................................................

/**	@descr
        This base class provides an implementation of the
        <code>AccessibleRelationSet</code> service.
*/
class UNOTOOLS_DLLPUBLIC AccessibleRelationSetHelper
	:	public cppu::WeakImplHelper1<
		::com::sun::star::accessibility::XAccessibleRelationSet
        >
{
public:
	//=====  internal  ========================================================
	AccessibleRelationSetHelper ();
	AccessibleRelationSetHelper (const AccessibleRelationSetHelper& rHelper);
protected:
	virtual ~AccessibleRelationSetHelper	(void);
public:

	//=====  XAccessibleRelationSet  ==========================================

	/** Returns the number of relations in this relation set.

        @return
            Returns the number of relations or zero if there are none.
	*/
    virtual sal_Int32 SAL_CALL getRelationCount(  )
		throw (::com::sun::star::uno::RuntimeException);

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

        @param nIndex
            This index specifies the relatio 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.

	*/
    virtual ::com::sun::star::accessibility::AccessibleRelation SAL_CALL
		getRelation( sal_Int32 nIndex )
			throw (::com::sun::star::lang::IndexOutOfBoundsException,
					::com::sun::star::uno::RuntimeException);

	/** 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
            <type>AccessibleRelationType</type>.

        @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.
	*/
    virtual sal_Bool SAL_CALL containsRelation( sal_Int16 aRelationType )
		throw (::com::sun::star::uno::RuntimeException);

	/** 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 <type>AccessibleRelationType</type>.

        @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.
	*/
    virtual ::com::sun::star::accessibility::AccessibleRelation SAL_CALL
		getRelationByType( sal_Int16 aRelationType )
			throw (::com::sun::star::uno::RuntimeException);

	void AddRelation(
		const ::com::sun::star::accessibility::AccessibleRelation& rRelation)
			throw (::com::sun::star::uno::RuntimeException);

	//=====  XTypeProvider  ===================================================

    /**	Returns a sequence of all supported interfaces.
    */
	virtual ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Type> SAL_CALL
		getTypes (void)
        throw (::com::sun::star::uno::RuntimeException);

    /**	Returns a implementation id.
    */
    virtual ::com::sun::star::uno::Sequence<sal_Int8> SAL_CALL
        getImplementationId (void)
        throw (::com::sun::star::uno::RuntimeException);

protected:
	///	Mutex guarding this object.
    ::vos::OMutex maMutex;

private:
	///	The implementation of this helper interface.
	AccessibleRelationSetHelperImpl*	mpHelperImpl;
};

//.........................................................................
}
//... namespace utl .......................................................
#endif