/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_unotools.hxx"


#include "unotools/accessiblerelationsethelper.hxx"
#include <rtl/uuid.h>
#include <vector>
#include <comphelper/sequence.hxx>

using namespace	::utl;
using namespace	::rtl;
using namespace	::com::sun::star;
using namespace	::com::sun::star::accessibility;

class AccessibleRelationSetHelperImpl
{
public:
	AccessibleRelationSetHelperImpl();
	AccessibleRelationSetHelperImpl(const AccessibleRelationSetHelperImpl& rImpl);
	~AccessibleRelationSetHelperImpl();

    sal_Int32 getRelationCount(  )
		throw (uno::RuntimeException);
    AccessibleRelation getRelation( sal_Int32 nIndex )
			throw (lang::IndexOutOfBoundsException,
					uno::RuntimeException);
    sal_Bool containsRelation( sal_Int16 aRelationType )
		throw (uno::RuntimeException);
    AccessibleRelation getRelationByType( sal_Int16 aRelationType )
			throw (uno::RuntimeException);
	void AddRelation(const AccessibleRelation& rRelation)
			throw (uno::RuntimeException);

private:
	std::vector<AccessibleRelation> maRelations;
};

AccessibleRelationSetHelperImpl::AccessibleRelationSetHelperImpl()
{
}

AccessibleRelationSetHelperImpl::AccessibleRelationSetHelperImpl(const AccessibleRelationSetHelperImpl& rImpl)
	: maRelations(rImpl.maRelations)
{
}

AccessibleRelationSetHelperImpl::~AccessibleRelationSetHelperImpl()
{
}

sal_Int32 AccessibleRelationSetHelperImpl::getRelationCount(  )
	throw (uno::RuntimeException)
{
	return maRelations.size();
}

AccessibleRelation AccessibleRelationSetHelperImpl::getRelation( sal_Int32 nIndex )
	throw (lang::IndexOutOfBoundsException,
			uno::RuntimeException)
{
	if ((nIndex < 0) || (static_cast<sal_uInt32>(nIndex) >= maRelations.size()))
		throw lang::IndexOutOfBoundsException();
	return maRelations[nIndex];
}

sal_Bool AccessibleRelationSetHelperImpl::containsRelation( sal_Int16 aRelationType )
	throw (uno::RuntimeException)
{
    AccessibleRelation defaultRelation; // default is INVALID
    AccessibleRelation relationByType = getRelationByType(aRelationType);
	return relationByType.RelationType != defaultRelation.RelationType;
}

AccessibleRelation AccessibleRelationSetHelperImpl::getRelationByType( sal_Int16 aRelationType )
	throw (uno::RuntimeException)
{
	sal_Int32 nCount(getRelationCount());
	sal_Int32 i(0);
	sal_Bool bFound(sal_False);
	while ((i < nCount) && !bFound)
	{
		if (maRelations[i].RelationType == aRelationType)
			return maRelations[i];
		else
			i++;
	}
	return AccessibleRelation();
}

void AccessibleRelationSetHelperImpl::AddRelation(const AccessibleRelation& rRelation)
	throw (uno::RuntimeException)
{
	sal_Int32 nCount(getRelationCount());
	sal_Int32 i(0);
	sal_Bool bFound(sal_False);
	while ((i < nCount) && !bFound)
	{
		if (maRelations[i].RelationType == rRelation.RelationType)
			bFound = sal_True;
		else
			i++;
	}
	if (bFound)
		maRelations[i].TargetSet = comphelper::concatSequences(maRelations[i].TargetSet, rRelation.TargetSet);
	else
		maRelations.push_back(rRelation);
}

//=====  internal  ============================================================

AccessibleRelationSetHelper::AccessibleRelationSetHelper ()
	: mpHelperImpl(NULL)
{
	mpHelperImpl = new AccessibleRelationSetHelperImpl();
}

AccessibleRelationSetHelper::AccessibleRelationSetHelper (const AccessibleRelationSetHelper& rHelper)
	: cppu::WeakImplHelper1<XAccessibleRelationSet>()
    , mpHelperImpl(NULL)
{
	if (rHelper.mpHelperImpl)
		mpHelperImpl = new AccessibleRelationSetHelperImpl(*rHelper.mpHelperImpl);
	else
		mpHelperImpl = new AccessibleRelationSetHelperImpl();
}

AccessibleRelationSetHelper::~AccessibleRelationSetHelper(void)
{
	delete mpHelperImpl;
}

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

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

        @return
            Returns the number of relations or zero if there are none.
	*/
sal_Int32 SAL_CALL
	AccessibleRelationSetHelper::getRelationCount(  )
		throw (uno::RuntimeException)
{
    ::vos::OGuard aGuard (maMutex);
	return mpHelperImpl->getRelationCount();
}

	/** 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.

	*/
 AccessibleRelation SAL_CALL
		AccessibleRelationSetHelper::getRelation( sal_Int32 nIndex )
			throw (lang::IndexOutOfBoundsException,
					uno::RuntimeException)
{
    ::vos::OGuard aGuard (maMutex);
	return mpHelperImpl->getRelation(nIndex);
}

	/** 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.
	*/
sal_Bool SAL_CALL
	AccessibleRelationSetHelper::containsRelation( sal_Int16 aRelationType )
		throw (uno::RuntimeException)
{
    ::vos::OGuard aGuard (maMutex);
	return mpHelperImpl->containsRelation(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 <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.
	*/
AccessibleRelation SAL_CALL
		AccessibleRelationSetHelper::getRelationByType( sal_Int16 aRelationType )
			throw (uno::RuntimeException)
{
    ::vos::OGuard aGuard (maMutex);
	return mpHelperImpl->getRelationByType(aRelationType);
}

void AccessibleRelationSetHelper::AddRelation(const AccessibleRelation& rRelation)
			throw (uno::RuntimeException)
{
    ::vos::OGuard aGuard (maMutex);
	mpHelperImpl->AddRelation(rRelation);
}

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

uno::Sequence< ::com::sun::star::uno::Type>
	AccessibleRelationSetHelper::getTypes (void)
    throw (::com::sun::star::uno::RuntimeException)
{
    ::vos::OGuard aGuard (maMutex);
	const ::com::sun::star::uno::Type aTypeList[] = {
    	::getCppuType((const uno::Reference<
        	XAccessibleRelationSet>*)0),
    	::getCppuType((const uno::Reference<
        	lang::XTypeProvider>*)0)
		};
	::com::sun::star::uno::Sequence< ::com::sun::star::uno::Type>
    	aTypeSequence (aTypeList, 2);
	return aTypeSequence;
}

uno::Sequence<sal_Int8> SAL_CALL
	AccessibleRelationSetHelper::getImplementationId (void)
    throw (::com::sun::star::uno::RuntimeException)
{
    ::vos::OGuard aGuard (maMutex);
	static uno::Sequence<sal_Int8> aId;
	if (aId.getLength() == 0)
	{
		aId.realloc (16);
		rtl_createUuid ((sal_uInt8 *)aId.getArray(), 0, sal_True);
	}
	return aId;
}