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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "unotools/accessiblestatesethelper.hxx"
#include <tools/debug.hxx>
#include <comphelper/servicehelper.hxx>
// defines how many states the bitfield can contain
// it has the size of 64 because I use a uInt64
#define BITFIELDSIZE 64
using namespace ::utl;
using namespace ::rtl;
using namespace ::com::sun::star;
using namespace ::com::sun::star::accessibility;
class AccessibleStateSetHelperImpl
{
public:
AccessibleStateSetHelperImpl();
AccessibleStateSetHelperImpl(const AccessibleStateSetHelperImpl& rImpl);
~AccessibleStateSetHelperImpl();
sal_Bool IsEmpty () const
throw (uno::RuntimeException);
sal_Bool Contains (sal_Int16 aState) const
throw (uno::RuntimeException);
uno::Sequence<sal_Int16> GetStates() const
throw (uno::RuntimeException);
void AddState(sal_Int16 aState)
throw (uno::RuntimeException);
void RemoveState(sal_Int16 aState)
throw (uno::RuntimeException);
inline void AddStates( const sal_Int64 _nStates ) SAL_THROW( ( ) );
private:
sal_uInt64 maStates;
};
AccessibleStateSetHelperImpl::AccessibleStateSetHelperImpl()
: maStates(0)
{
}
AccessibleStateSetHelperImpl::AccessibleStateSetHelperImpl(const AccessibleStateSetHelperImpl& rImpl)
: maStates(rImpl.maStates)
{
}
AccessibleStateSetHelperImpl::~AccessibleStateSetHelperImpl()
{
}
inline sal_Bool AccessibleStateSetHelperImpl::IsEmpty () const
throw (uno::RuntimeException)
{
return maStates == 0;
}
inline sal_Bool AccessibleStateSetHelperImpl::Contains (sal_Int16 aState) const
throw (uno::RuntimeException)
{
DBG_ASSERT(aState < BITFIELDSIZE, "the statesset is too small");
sal_uInt64 aTempBitSet(1);
aTempBitSet <<= aState;
return ((aTempBitSet & maStates) != 0);
}
inline uno::Sequence<sal_Int16> AccessibleStateSetHelperImpl::GetStates() const
throw (uno::RuntimeException)
{
uno::Sequence<sal_Int16> aRet(BITFIELDSIZE);
sal_Int16* pSeq = aRet.getArray();
sal_Int16 nStateCount(0);
for (sal_Int16 i = 0; i < BITFIELDSIZE; ++i)
if (Contains(i))
{
*pSeq = i;
++pSeq;
++nStateCount;
}
aRet.realloc(nStateCount);
return aRet;
}
inline void AccessibleStateSetHelperImpl::AddStates( const sal_Int64 _nStates ) SAL_THROW( ( ) )
{
maStates |= _nStates;
}
inline void AccessibleStateSetHelperImpl::AddState(sal_Int16 aState)
throw (uno::RuntimeException)
{
DBG_ASSERT(aState < BITFIELDSIZE, "the statesset is too small");
sal_uInt64 aTempBitSet(1);
aTempBitSet <<= aState;
maStates |= aTempBitSet;
}
inline void AccessibleStateSetHelperImpl::RemoveState(sal_Int16 aState)
throw (uno::RuntimeException)
{
DBG_ASSERT(aState < BITFIELDSIZE, "the statesset is too small");
sal_uInt64 aTempBitSet(1);
aTempBitSet <<= aState;
aTempBitSet = ~aTempBitSet;
maStates &= aTempBitSet;
}
//===== internal ============================================================
AccessibleStateSetHelper::AccessibleStateSetHelper ()
: mpHelperImpl(NULL)
{
mpHelperImpl = new AccessibleStateSetHelperImpl();
}
AccessibleStateSetHelper::AccessibleStateSetHelper ( const sal_Int64 _nInitialStates )
: mpHelperImpl(NULL)
{
mpHelperImpl = new AccessibleStateSetHelperImpl();
mpHelperImpl->AddStates( _nInitialStates );
}
AccessibleStateSetHelper::AccessibleStateSetHelper (const AccessibleStateSetHelper& rHelper)
: cppu::WeakImplHelper1<XAccessibleStateSet>()
, mpHelperImpl(NULL)
{
if (rHelper.mpHelperImpl)
mpHelperImpl = new AccessibleStateSetHelperImpl(*rHelper.mpHelperImpl);
else
mpHelperImpl = new AccessibleStateSetHelperImpl();
}
AccessibleStateSetHelper::~AccessibleStateSetHelper(void)
{
delete mpHelperImpl;
}
//===== XAccessibleStateSet ==============================================
/** Checks whether the current state set is empty.
@return
Returns <TRUE/> if there is no state in this state set and
<FALSE/> if there is at least one state set in it.
*/
sal_Bool SAL_CALL AccessibleStateSetHelper::isEmpty ()
throw (uno::RuntimeException)
{
osl::MutexGuard aGuard (maMutex);
return mpHelperImpl->IsEmpty();
}
/** Checks if the given state is a member of the state set of this
object.
@param aState
The state for which to check membership. This has to be one of
the constants of <type>AccessibleStateType</type>.
@return
Returns <TRUE/> if the given state is a memeber of this object's
state set and <FALSE/> otherwise.
*/
sal_Bool SAL_CALL AccessibleStateSetHelper::contains (sal_Int16 aState)
throw (uno::RuntimeException)
{
osl::MutexGuard aGuard (maMutex);
return mpHelperImpl->Contains(aState);
}
/** Checks if all of the given states are in this object's state
set.
@param aStateSet
This sequence of states is interpreted as set and every of its
members, duplicates are ignored, is checked for membership in
this object's state set. Each state has to be one of the
constants of <type>AccessibleStateType</type>.
@return
Returns <TRUE/> if all states of the given state set are members
of this object's state set. <FALSE/> is returned if at least
one of the states in the given state is not a member of this
object's state set.
*/
sal_Bool SAL_CALL AccessibleStateSetHelper::containsAll
(const uno::Sequence<sal_Int16>& rStateSet)
throw (uno::RuntimeException)
{
osl::MutexGuard aGuard (maMutex);
sal_Int32 nCount(rStateSet.getLength());
const sal_Int16* pStates = rStateSet.getConstArray();
sal_Int32 i = 0;
sal_Bool bFound(sal_True);
while (i < nCount)
{
bFound = mpHelperImpl->Contains(pStates[i]);
i++;
}
return bFound;
}
uno::Sequence<sal_Int16> SAL_CALL AccessibleStateSetHelper::getStates()
throw (uno::RuntimeException)
{
osl::MutexGuard aGuard(maMutex);
return mpHelperImpl->GetStates();
}
void AccessibleStateSetHelper::AddState(sal_Int16 aState)
throw (uno::RuntimeException)
{
osl::MutexGuard aGuard (maMutex);
mpHelperImpl->AddState(aState);
}
void AccessibleStateSetHelper::RemoveState(sal_Int16 aState)
throw (uno::RuntimeException)
{
osl::MutexGuard aGuard (maMutex);
mpHelperImpl->RemoveState(aState);
}
//===== XTypeProvider =======================================================
uno::Sequence< ::com::sun::star::uno::Type>
AccessibleStateSetHelper::getTypes (void)
throw (::com::sun::star::uno::RuntimeException)
{
const ::com::sun::star::uno::Type aTypeList[] = {
::getCppuType((const uno::Reference<
XAccessibleStateSet>*)0),
::getCppuType((const uno::Reference<
lang::XTypeProvider>*)0)
};
::com::sun::star::uno::Sequence< ::com::sun::star::uno::Type>
aTypeSequence (aTypeList, 2);
return aTypeSequence;
}
namespace
{
class theAccessibleStateSetHelperUnoTunnelId : public rtl::Static< UnoTunnelIdInit, theAccessibleStateSetHelperUnoTunnelId > {};
}
uno::Sequence<sal_Int8> SAL_CALL
AccessibleStateSetHelper::getImplementationId (void)
throw (::com::sun::star::uno::RuntimeException)
{
return theAccessibleStateSetHelperUnoTunnelId::get().getSeq();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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