AccRelation.cxx

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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  <UAccCOM.h>
#include "AccRelation.h"
 
#include <vcl/svapp.hxx>
 
#include <com/sun/star/accessibility/AccessibleRelationType.hpp>
#include <com/sun/star/accessibility/XAccessible.hpp>
#include <com/sun/star/accessibility/XAccessibleContext.hpp>
#include "MAccessible.h"
 
using namespace com::sun::star::accessibility;
using namespace com::sun::star::uno;
 
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccRelation::get_relationType(BSTR * relationType)
{
    SolarMutexGuard g;
 
    try {
 
    if (relationType == nullptr)
        return E_INVALIDARG;
 
    int type = relation.RelationType;
    SysFreeString(*relationType);
 
    *relationType = getRelationTypeBSTR(type);
    return S_OK;
 
    } catch(...) { return E_FAIL; }
}
 
// Gets what the type of localized relation is.
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccRelation::get_localizedRelationType(BSTR *)
{
 
 
    try {
 
    return S_OK;
 
    } catch(...) { return E_FAIL; }
}
 
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccRelation::get_nTargets(long * nTargets)
{
    SolarMutexGuard g;
 
    try {
 
    if (nTargets == nullptr)
        return E_INVALIDARG;
 
    Sequence< Reference< XInterface > > xTargets = relation.TargetSet;
    *nTargets = xTargets.getLength();
    return S_OK;
 
    } catch(...) { return E_FAIL; }
}
 
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccRelation::get_target(long targetIndex, IUnknown * * target)
{
    SolarMutexGuard g;
 
    try {
 
    if (target == nullptr)
        return E_FAIL;
 
    Sequence< Reference< XInterface > > xTargets = relation.TargetSet;
    int nCount = xTargets.getLength();
    if( targetIndex >= nCount )
        return E_FAIL;
 
    Reference<XAccessible> xRAcc(xTargets[targetIndex], UNO_QUERY);
    IAccessible* pRet = nullptr;
 
    bool isGet = CMAccessible::get_IAccessibleFromXAccessible(xRAcc.get(), &pRet);
    if(isGet)
    {
        *target = /*(IAccessible2 *)*/pRet;
        pRet->AddRef();
        return S_OK;
    }
 
    return E_FAIL;
 
    } catch(...) { return E_FAIL; }
}
 
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccRelation::get_targets(long, IUnknown * * target, long * nTargets)
{
    SolarMutexGuard g;
 
    try {
 
    // #CHECK#
    if(target == nullptr)
        return E_INVALIDARG;
    if (nTargets == nullptr)
        return E_INVALIDARG;
 
    Sequence< Reference< XInterface > > xTargets = relation.TargetSet;
    int nCount = xTargets.getLength();
 
    *target = static_cast<IUnknown*>(::CoTaskMemAlloc(nCount*sizeof(IUnknown)));
 
    // #CHECK Memory Allocation#
    if(*target == nullptr)
    {
        return E_FAIL;
    }
 
    for(int i=0; i<nCount ; i++)
    {
        IUnknown* pAcc = nullptr;
        HRESULT hr = get_target(i,&pAcc);
        if(SUCCEEDED(hr))
            target[i] = pAcc;
    }
 
    *nTargets = nCount;
    return S_OK;
 
    } catch(...) { return E_FAIL; }
}
 
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccRelation::put_XSubInterface(hyper pXSubInterface)
{
    // internal IUNOXWrapper - no mutex meeded
 
    relation = *reinterpret_cast<AccessibleRelation*>(pXSubInterface);
    return S_OK;
}
 
BSTR CAccRelation::getRelationTypeBSTR(int type)
{
    static LPCWSTR map[] =
        {
            L"INVALID",                  // AccessibleRelationType::INVALID
            IA2_RELATION_FLOWS_FROM,     // AccessibleRelationType::CONTENT_FLOWS_FROM
            IA2_RELATION_FLOWS_TO,       // AccessibleRelationType::CONTENT_FLOWS_TO
            IA2_RELATION_CONTROLLED_BY,  // AccessibleRelationType::CONTROLLED_BY
            IA2_RELATION_CONTROLLER_FOR, // AccessibleRelationType::CONTROLLER_FOR
            IA2_RELATION_LABEL_FOR,      // AccessibleRelationType::LABEL_FOR
            IA2_RELATION_LABELED_BY,     // AccessibleRelationType::LABELED_BY
            IA2_RELATION_MEMBER_OF,      // AccessibleRelationType::MEMBER_OF
            IA2_RELATION_SUBWINDOW_OF,   // AccessibleRelationType::SUB_WINDOW_OF
            IA2_RELATION_NODE_CHILD_OF,  // AccessibleRelationType::NODE_CHILD_OF
            IA2_RELATION_DESCRIBED_BY    // AccessibleRelationType::DESCRIBED_BY
        };
 
    return ::SysAllocString( (type >= AccessibleRelationType::INVALID && type <= AccessibleRelationType::DESCRIBED_BY)
                             ? map[type] : L"");
}
 
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