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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#include "stdafx.h"
#include "EnumVariant.h"
#include "MAccessible.h"
#if defined __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wnon-virtual-dtor"
#endif
#include <UAccCOM.h>
#if defined __clang__
#pragma clang diagnostic pop
#endif
#include <vcl/svapp.hxx>
using namespace com::sun::star::uno;
using namespace com::sun::star::accessibility;
// CEnumVariant
/**
* enumerate method,get next element
* @param cElements The number of elements to be returned.
* @param pvar An array of at least size celt in which the elements are to be returned.
* @param pcElementFetched Pointer to the number of elements returned in rgVar, or Null
* @return Result.
*/
HRESULT STDMETHODCALLTYPE CEnumVariant::Next(ULONG cElements,VARIANT __RPC_FAR *pvar,ULONG __RPC_FAR *pcElementFetched)
{
SolarMutexGuard g;
long l1;
ULONG l2;
if (pvar == nullptr)
return E_INVALIDARG;
if (pcElementFetched != nullptr)
*pcElementFetched = 0;
// Retrieve the next cElements.
for (l1=m_lCurrent, l2=0; l1<m_pXAccessibleSelection->getSelectedAccessibleChildCount() &&
l2<cElements; l1++, l2++)
{
Reference< XAccessible > pRXAcc = m_pXAccessibleSelection->getSelectedAccessibleChild(l1);
IAccessible* pChild = nullptr;
bool isGet = CMAccessible::get_IAccessibleFromXAccessible(pRXAcc.get(),
&pChild);
if(isGet)
{
pvar[l2].vt = VT_DISPATCH;
pvar[l2].pdispVal = pChild;
pChild->AddRef();
}
else if(pRXAcc.is())
{
if(CMAccessible::g_pAgent)
CMAccessible::g_pAgent->InsertAccObj(pRXAcc.get(),pUNOInterface);
isGet = CMAccessible::get_IAccessibleFromXAccessible(
pRXAcc.get(), &pChild);
if(isGet)
{
pvar[l2].vt = VT_DISPATCH;
pvar[l2].pdispVal = pChild;
pChild->AddRef();
}
}
}
// Set count of elements retrieved.
if (pcElementFetched != nullptr)
*pcElementFetched = l2;
m_lCurrent = l1;
return (l2 < cElements) ? S_FALSE : NOERROR;
}
/**
* skip the elements in the given range when enumerate elements
* @param cElements The number of elements to skip.
* @return Result.
*/
HRESULT STDMETHODCALLTYPE CEnumVariant::Skip(ULONG cElements)
{
SolarMutexGuard g;
m_lCurrent += cElements;
if (m_lCurrent > static_cast<long>(m_lLBound+m_pXAccessibleSelection->getSelectedAccessibleChildCount()))
{
m_lCurrent = m_lLBound+m_pXAccessibleSelection->getSelectedAccessibleChildCount();
return E_FAIL;
}
else
return NOERROR;
}
/**
* reset the enumaration position to initial value
* @param
* @return Result.
*/
HRESULT STDMETHODCALLTYPE CEnumVariant::Reset()
{
SolarMutexGuard g;
m_lCurrent = m_lLBound;
return NOERROR;
}
/**
*create a new IEnumVariant object,
*copy current enumaration container and its state to
*the new object
*AT will use the copy object to get elements
* @param ppenum On return, pointer to the location of the clone enumerator
* @return Result.
*/
HRESULT STDMETHODCALLTYPE CEnumVariant::Clone(IEnumVARIANT __RPC_FAR *__RPC_FAR *ppenum)
{
SolarMutexGuard g;
CEnumVariant * penum = nullptr;
HRESULT hr;
if (ppenum == nullptr)
return E_INVALIDARG;
*ppenum = nullptr;
hr = Create(&penum);
if( hr == S_OK )
{
penum->PutSelection(reinterpret_cast<hyper>(pUNOInterface));
*ppenum = penum;
}
else
{
if (penum)
penum->Release();
}
return hr;
}
/**
*Static public method to create a CLSID_EnumVariant com object.
* @param ppenum Pointer to accept com object.
* @return Result.
*/
HRESULT STDMETHODCALLTYPE CEnumVariant::Create(CEnumVariant __RPC_FAR *__RPC_FAR *ppenum)
{
SolarMutexGuard g;
HRESULT hr = createInstance<CEnumVariant>(IID_IEnumVariant, ppenum);
if (S_OK != hr)
{
return E_FAIL;
}
return S_OK;
}
/**
*Return count of elements in current container
* @param.
* @return count of elements in current container.
*/
long CEnumVariant::GetCountOfElements()
{
if(m_pXAccessibleSelection.is())
return m_pXAccessibleSelection->getSelectedAccessibleChildCount();
return 0;
}
/**
* Set member m_pXAccessibleSelection to NULL and m_lCurrent to m_lLBound.
* @param.
* @return Result
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CEnumVariant::ClearEnumeration()
{
// internal IEnumVariant - no mutex meeded
pUNOInterface = nullptr;
m_pXAccessibleSelection = nullptr;
m_lCurrent = m_lLBound;
return S_OK;
}
/**
*Static method to fetch XAccessibleSelection
* @param pXAcc XAccessible interface.
* @return XAccessibleSelection interface.
*/
static Reference<XAccessibleSelection> GetXAccessibleSelection(XAccessible* pXAcc)
{
if( pXAcc == nullptr)
return nullptr;
Reference< XAccessibleContext > pRContext = pXAcc->getAccessibleContext();
if( !pRContext.is() )
return nullptr;
Reference< XAccessibleSelection > pRSelection(pRContext,UNO_QUERY);
if( !pRSelection.is() )
return nullptr;
return pRSelection;
}
/**
* Put valid UNO XAccessible interface.
* @param pXSelection XAccessible interface.
* @return Result...
*/
STDMETHODIMP CEnumVariant::PutSelection(hyper pXSelection)
{
// internal IEnumVariant - no mutex meeded
pUNOInterface = reinterpret_cast<XAccessible*>(pXSelection);
m_pXAccessibleSelection = GetXAccessibleSelection(pUNOInterface);
return S_OK;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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