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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 <com/sun/star/accessibility/XAccessibleSelection.hpp>
#include "accselectionhelper.hxx"
#include "acccontext.hxx"
#include <accmap.hxx>
#include <o3tl/safeint.hxx>
#include <svx/AccessibleShape.hxx>
#include <viewsh.hxx>
#include <fesh.hxx>
#include <vcl/svapp.hxx>
#include <flyfrm.hxx>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
#include <fmtanchr.hxx>
using namespace ::com::sun::star::accessibility;
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using ::com::sun::star::accessibility::XAccessible;
using ::com::sun::star::accessibility::XAccessibleContext;
using ::com::sun::star::accessibility::XAccessibleSelection;
using namespace ::sw::access;
SwAccessibleSelectionHelper::SwAccessibleSelectionHelper(
SwAccessibleContext& rContext ) :
m_rContext( rContext )
{
}
SwFEShell* SwAccessibleSelectionHelper::GetFEShell()
{
OSL_ENSURE( m_rContext.GetMap() != nullptr, "no map?" );
SwViewShell* pViewShell = m_rContext.GetMap()->GetShell();
OSL_ENSURE( pViewShell != nullptr,
"No view shell? Then what are you looking at?" );
SwFEShell* pFEShell = dynamic_cast<SwFEShell*>( pViewShell );
return pFEShell;
}
void SwAccessibleSelectionHelper::throwIndexOutOfBoundsException()
{
Reference < XAccessibleContext > xThis( &m_rContext );
Reference < XAccessibleSelection >xSelThis( xThis, UNO_QUERY );
lang::IndexOutOfBoundsException aExcept(
"index out of bounds",
xSelThis );
throw aExcept;
}
// XAccessibleSelection
void SwAccessibleSelectionHelper::selectAccessibleChild(
sal_Int64 nChildIndex )
{
SolarMutexGuard aGuard;
if (nChildIndex < 0 || nChildIndex >= m_rContext.GetChildCount(*(m_rContext.GetMap())))
throwIndexOutOfBoundsException();
// Get the respective child as SwFrame (also do index checking), ...
const SwAccessibleChild aChild = m_rContext.GetChild( *(m_rContext.GetMap()),
nChildIndex );
if( !aChild.IsValid() )
throwIndexOutOfBoundsException();
// we can only select fly frames, so we ignore (should: return
// false) all other attempts at child selection
if (GetFEShell())
{
const SdrObject *pObj = aChild.GetDrawObject();
if( pObj )
m_rContext.Select( const_cast< SdrObject *>( pObj ), nullptr==aChild.GetSwFrame());
}
// no frame shell, or no frame, or no fly frame -> can't select
}
//When the selected state of the SwFrameOrObj is set, return true.
static bool lcl_getSelectedState(const SwAccessibleChild& aChild,
SwAccessibleContext* pContext,
SwAccessibleMap* pMap)
{
Reference< XAccessible > xAcc;
if ( aChild.GetSwFrame() )
{
xAcc = pMap->GetContext( aChild.GetSwFrame(), false );
}
else if ( aChild.GetDrawObject() )
{
xAcc = pMap->GetContext( aChild.GetDrawObject(), pContext, false );
}
if( xAcc.is() )
{
Reference< XAccessibleContext > pRContext = xAcc->getAccessibleContext();
if(!pRContext.is())
return false;
sal_Int64 nRStateSet = pRContext->getAccessibleStateSet();
if(nRStateSet & AccessibleStateType::SELECTED)
return true;
}
return false;
}
bool SwAccessibleSelectionHelper::isAccessibleChildSelected(
sal_Int64 nChildIndex )
{
SolarMutexGuard aGuard;
if (nChildIndex < 0 || nChildIndex >= m_rContext.GetChildCount(*(m_rContext.GetMap())))
throwIndexOutOfBoundsException();
// Get the respective child as SwFrame (also do index checking), ...
const SwAccessibleChild aChild = m_rContext.GetChild( *(m_rContext.GetMap()),
nChildIndex );
if( !aChild.IsValid() )
throwIndexOutOfBoundsException();
// ... and compare to the currently selected frame
bool bRet = false;
if (const SwFEShell* pFEShell = GetFEShell())
{
if ( aChild.GetSwFrame() != nullptr )
{
bRet = (pFEShell->GetSelectedFlyFrame() == aChild.GetSwFrame());
}
else if ( aChild.GetDrawObject() )
{
bRet = pFEShell->IsObjSelected( *aChild.GetDrawObject() );
}
//If the SwFrameOrObj is not selected directly in the UI, we should check whether it is selected in the selection cursor.
if( !bRet )
{
if( lcl_getSelectedState( aChild, &m_rContext, m_rContext.GetMap() ) )
bRet = true;
}
}
return bRet;
}
void SwAccessibleSelectionHelper::selectAllAccessibleChildren( )
{
SolarMutexGuard aGuard;
// We can select only one. So iterate over the children to find
// the first we can select, and select it.
SwFEShell* pFEShell = GetFEShell();
if (!pFEShell)
return;
std::list< SwAccessibleChild > aChildren;
m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
for( const SwAccessibleChild& rChild : aChildren )
{
const SdrObject* pObj = rChild.GetDrawObject();
const SwFrame* pFrame = rChild.GetSwFrame();
if( pObj && !(pFrame != nullptr && pFEShell->IsObjSelected()) )
{
m_rContext.Select( const_cast< SdrObject *>( pObj ), nullptr==pFrame );
if( pFrame )
break;
}
}
}
sal_Int64 SwAccessibleSelectionHelper::getSelectedAccessibleChildCount( )
{
SolarMutexGuard aGuard;
sal_Int64 nCount = 0;
// Only one frame can be selected at a time, and we only frames
// for selectable children.
if (const SwFEShell* pFEShell = GetFEShell())
{
const SwFlyFrame* pFlyFrame = pFEShell->GetSelectedFlyFrame();
if( pFlyFrame )
{
nCount = 1;
}
else
{
const size_t nSelObjs = pFEShell->IsObjSelected();
if( nSelObjs > 0 )
{
std::list< SwAccessibleChild > aChildren;
m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
for( const SwAccessibleChild& rChild : aChildren )
{
if( rChild.GetDrawObject() && !rChild.GetSwFrame() &&
SwAccessibleFrame::GetParent(rChild, m_rContext.IsInPagePreview())
== m_rContext.GetFrame() &&
pFEShell->IsObjSelected( *rChild.GetDrawObject() ) )
{
nCount++;
}
if (o3tl::make_unsigned(nCount) >= nSelObjs)
break;
}
}
}
//If the SwFrameOrObj is not selected directly in the UI,
//we should check whether it is selected in the selection cursor.
if( nCount == 0 )
{
std::list< SwAccessibleChild > aChildren;
m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
nCount = static_cast<sal_Int32>(std::count_if(aChildren.begin(), aChildren.end(),
[this](const SwAccessibleChild& aChild) { return lcl_getSelectedState(aChild, &m_rContext, m_rContext.GetMap()); }));
}
}
return nCount;
}
Reference<XAccessible> SwAccessibleSelectionHelper::getSelectedAccessibleChild(
sal_Int64 nSelectedChildIndex )
{
SolarMutexGuard aGuard;
// Since the index is relative to the selected children, and since
// there can be at most one selected frame child, the index must
// be 0, and a selection must exist, otherwise we have to throw an
// lang::IndexOutOfBoundsException
SwFEShell* pFEShell = GetFEShell();
if (!pFEShell)
throwIndexOutOfBoundsException();
SwAccessibleChild aChild;
const SwFlyFrame *pFlyFrame = pFEShell->GetSelectedFlyFrame();
if( pFlyFrame )
{
if( 0 == nSelectedChildIndex )
{
if(SwAccessibleFrame::GetParent( SwAccessibleChild(pFlyFrame), m_rContext.IsInPagePreview()) == m_rContext.GetFrame() )
{
aChild = pFlyFrame;
}
else
{
const SwFrameFormat *pFrameFormat = pFlyFrame->GetFormat();
if (pFrameFormat)
{
const SwFormatAnchor& rAnchor = pFrameFormat->GetAnchor();
if( rAnchor.GetAnchorId() == RndStdIds::FLY_AS_CHAR )
{
const SwFrame *pParaFrame = SwAccessibleFrame::GetParent( SwAccessibleChild(pFlyFrame), m_rContext.IsInPagePreview() );
aChild = pParaFrame;
}
}
}
}
}
else
{
const size_t nSelObjs = pFEShell->IsObjSelected();
if( 0 == nSelObjs || o3tl::make_unsigned(nSelectedChildIndex) >= nSelObjs )
throwIndexOutOfBoundsException();
std::list< SwAccessibleChild > aChildren;
m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
for( const SwAccessibleChild& rChild : aChildren )
{
if( rChild.GetDrawObject() && !rChild.GetSwFrame() &&
SwAccessibleFrame::GetParent(rChild, m_rContext.IsInPagePreview()) ==
m_rContext.GetFrame() &&
pFEShell->IsObjSelected( *rChild.GetDrawObject() ) )
{
if( 0 == nSelectedChildIndex )
aChild = rChild;
else
--nSelectedChildIndex;
}
if (aChild.IsValid())
break;
}
}
if( !aChild.IsValid() )
throwIndexOutOfBoundsException();
OSL_ENSURE( m_rContext.GetMap() != nullptr, "We need the map." );
Reference< XAccessible > xChild;
if( aChild.GetSwFrame() )
{
::rtl::Reference < SwAccessibleContext > xChildImpl(
m_rContext.GetMap()->GetContextImpl( aChild.GetSwFrame() ) );
if( xChildImpl.is() )
{
xChildImpl->SetParent( &m_rContext );
xChild = xChildImpl.get();
}
}
else if ( aChild.GetDrawObject() )
{
::rtl::Reference < ::accessibility::AccessibleShape > xChildImpl(
m_rContext.GetMap()->GetContextImpl( aChild.GetDrawObject(),
&m_rContext ) );
if( xChildImpl.is() )
xChild = xChildImpl.get();
}
return xChild;
}
// index has to be treated as global child index.
void SwAccessibleSelectionHelper::deselectAccessibleChild(
sal_Int64 nChildIndex )
{
SolarMutexGuard g;
if( nChildIndex < 0 ||
nChildIndex >= m_rContext.GetChildCount( *(m_rContext.GetMap()) ) )
throwIndexOutOfBoundsException();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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