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374 | /* -*- 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/AccessibleStateType.hpp>
#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <unotools/accessiblestatesethelper.hxx>
#include <osl/mutex.hxx>
#include <vcl/svapp.hxx>
#include <vcl/window.hxx>
#include <frmfmt.hxx>
#include <flyfrm.hxx>
#include <fmtcntnt.hxx>
#include <ndindex.hxx>
#include <fesh.hxx>
#include <hints.hxx>
#include <accmap.hxx>
#include "accframebase.hxx"
#include <crsrsh.hxx>
#include <notxtfrm.hxx>
#include <ndtxt.hxx>
#include <undobj.hxx>
#include <fmtanchr.hxx>
using namespace ::com::sun::star;
using namespace ::com::sun::star::accessibility;
bool SwAccessibleFrameBase::IsSelected()
{
bool bRet = false;
assert(GetMap());<--- Assert statement calls a function which may have desired side effects: 'GetMap'. [+]Non-pure function: 'GetMap' is called inside assert statement. Assert statements are removed from release builds so the code inside assert statement is not executed. If the code is needed also in release builds, this is a bug.
const SwViewShell *pVSh = GetMap()->GetShell();
assert(pVSh);
if( auto pFESh = dynamic_cast<const SwFEShell*>(pVSh) )
{
const SwFrame *pFlyFrame = pFESh->GetSelectedFlyFrame();
if( pFlyFrame == GetFrame() )
bRet = true;
}
return bRet;
}
void SwAccessibleFrameBase::GetStates(
::utl::AccessibleStateSetHelper& rStateSet )
{
SwAccessibleContext::GetStates( rStateSet );
const SwViewShell *pVSh = GetMap()->GetShell();
assert(pVSh);
if (dynamic_cast<const SwFEShell*>(pVSh))
{
// SELECTABLE
rStateSet.AddState(AccessibleStateType::SELECTABLE);
// FOCUSABLE
rStateSet.AddState(AccessibleStateType::FOCUSABLE);
}
// SELECTED and FOCUSED
if( IsSelected() )
{
rStateSet.AddState( AccessibleStateType::SELECTED );
SAL_WARN_IF(!m_bIsSelected, "sw.a11y", "bSelected out of sync");
::rtl::Reference < SwAccessibleContext > xThis( this );
GetMap()->SetCursorContext( xThis );
vcl::Window *pWin = GetWindow();
if( pWin && pWin->HasFocus() )
rStateSet.AddState( AccessibleStateType::FOCUSED );
}
if( GetSelectedState() )
rStateSet.AddState( AccessibleStateType::SELECTED );
}
SwNodeType SwAccessibleFrameBase::GetNodeType( const SwFlyFrame *pFlyFrame )
{
SwNodeType nType = SwNodeType::Text;
if( pFlyFrame->Lower() )
{
if( pFlyFrame->Lower()->IsNoTextFrame() )
{
const SwNoTextFrame *const pContentFrame =
static_cast<const SwNoTextFrame *>(pFlyFrame->Lower());
nType = pContentFrame->GetNode()->GetNodeType();
}
}
else
{
const SwFrameFormat *pFrameFormat = pFlyFrame->GetFormat();
const SwFormatContent& rContent = pFrameFormat->GetContent();
const SwNodeIndex *pNdIdx = rContent.GetContentIdx();
if( pNdIdx )
{
const SwContentNode *pCNd =
(pNdIdx->GetNodes())[pNdIdx->GetIndex()+1]->GetContentNode();
if( pCNd )
nType = pCNd->GetNodeType();
}
}
return nType;
}
SwAccessibleFrameBase::SwAccessibleFrameBase(
std::shared_ptr<SwAccessibleMap> const& pInitMap,
sal_Int16 nInitRole,
const SwFlyFrame* pFlyFrame ) :
SwAccessibleContext( pInitMap, nInitRole, pFlyFrame ),
m_bIsSelected( false )
{
const SwFrameFormat* pFrameFormat = pFlyFrame->GetFormat();
if(pFrameFormat)<--- Assuming that condition 'pFrameFormat' is not redundant
StartListening(const_cast<SwFrameFormat*>(pFrameFormat)->GetNotifier());
SetName( pFrameFormat->GetName() );<--- Null pointer dereference
m_bIsSelected = IsSelected();
}
void SwAccessibleFrameBase::InvalidateCursorPos_()
{
bool bNewSelected = IsSelected();
bool bOldSelected;
{
osl::MutexGuard aGuard( m_Mutex );
bOldSelected = m_bIsSelected;
m_bIsSelected = bNewSelected;
}
if( bNewSelected )
{
// remember that object as the one that has the caret. This is
// necessary to notify that object if the cursor leaves it.
::rtl::Reference < SwAccessibleContext > xThis( this );
GetMap()->SetCursorContext( xThis );
}
if( bOldSelected != bNewSelected )
{
vcl::Window *pWin = GetWindow();
if( pWin && pWin->HasFocus() && bNewSelected )
FireStateChangedEvent( AccessibleStateType::FOCUSED, bNewSelected );
if( pWin && pWin->HasFocus() && !bNewSelected )
FireStateChangedEvent( AccessibleStateType::FOCUSED, bNewSelected );
if(bNewSelected)
{
uno::Reference< XAccessible > xParent( GetWeakParent() );
if( xParent.is() )
{
SwAccessibleContext *pAcc =
static_cast <SwAccessibleContext *>( xParent.get() );
AccessibleEventObject aEvent;
aEvent.EventId = AccessibleEventId::SELECTION_CHANGED;
uno::Reference< XAccessible > xChild(this);
aEvent.NewValue <<= xChild;
pAcc->FireAccessibleEvent( aEvent );
}
}
}
}
void SwAccessibleFrameBase::InvalidateFocus_()
{
vcl::Window *pWin = GetWindow();
if( pWin )
{
bool bSelected;
{
osl::MutexGuard aGuard( m_Mutex );
bSelected = m_bIsSelected;
}
assert(bSelected && "focus object should be selected");
FireStateChangedEvent( AccessibleStateType::FOCUSED,
pWin->HasFocus() && bSelected );
}
}
bool SwAccessibleFrameBase::HasCursor()
{
osl::MutexGuard aGuard( m_Mutex );
return m_bIsSelected;
}
SwAccessibleFrameBase::~SwAccessibleFrameBase()
{
}
void SwAccessibleFrameBase::Notify(const SfxHint& rHint)
{
if(rHint.GetId() == SfxHintId::Dying)
{
EndListeningAll();
}
else if(auto pLegacyModifyHint = dynamic_cast<const sw::LegacyModifyHint*>(&rHint))
{
sal_uInt16 nWhich = pLegacyModifyHint->m_pOld ? pLegacyModifyHint->m_pOld->Which() : pLegacyModifyHint->m_pNew ? pLegacyModifyHint->m_pNew->Which() : 0;
const SwFlyFrame* pFlyFrame = static_cast<const SwFlyFrame*>(GetFrame());
if(nWhich == RES_NAME_CHANGED && pFlyFrame)
{
const SwFrameFormat* pFrameFormat = pFlyFrame->GetFormat();
const OUString sOldName( GetName() );
assert( !pLegacyModifyHint->m_pOld ||
static_cast<const SwStringMsgPoolItem *>(pLegacyModifyHint->m_pOld)->GetString() == GetName());
SetName( pFrameFormat->GetName() );
assert( !pLegacyModifyHint->m_pNew ||
static_cast<const SwStringMsgPoolItem *>(pLegacyModifyHint->m_pNew)->GetString() == GetName());
if( sOldName != GetName() )
{
AccessibleEventObject aEvent;
aEvent.EventId = AccessibleEventId::NAME_CHANGED;
aEvent.OldValue <<= sOldName;
aEvent.NewValue <<= GetName();
FireAccessibleEvent( aEvent );
}
}
}
}
void SwAccessibleFrameBase::Dispose(bool bRecursive, bool bCanSkipInvisible)
{
SolarMutexGuard aGuard;
EndListeningAll();
SwAccessibleContext::Dispose(bRecursive, bCanSkipInvisible);
}
//Get the selection cursor of the document.
SwPaM* SwAccessibleFrameBase::GetCursor()
{
// get the cursor shell; if we don't have any, we don't have a
// cursor/selection either
SwPaM* pCursor = nullptr;
SwCursorShell* pCursorShell = GetCursorShell();
if( pCursorShell != nullptr && !pCursorShell->IsTableMode() )
{
SwFEShell *pFESh = dynamic_cast<const SwFEShell*>( pCursorShell) != nullptr
? static_cast< SwFEShell * >( pCursorShell ) : nullptr;
if( !pFESh ||
!(pFESh->IsFrameSelected() || pFESh->IsObjSelected() > 0) )
{
// get the selection, and test whether it affects our text node
pCursor = pCursorShell->GetCursor( false /* ??? */ );
}
}
return pCursor;
}
//Return the selected state of the object.
//when the object's anchor are in the selection cursor, we should return true.
bool SwAccessibleFrameBase::GetSelectedState( )
{
SolarMutexGuard aGuard;
if(GetMap()->IsDocumentSelAll())
{
return true;
}
// SELECTED.
SwFlyFrame* pFlyFrame = getFlyFrame();
const SwFrameFormat *pFrameFormat = pFlyFrame->GetFormat();
const SwFormatAnchor& rAnchor = pFrameFormat->GetAnchor();
const SwPosition *pPos = rAnchor.GetContentAnchor();
if( !pPos )
return false;
int nIndex = pPos->nContent.GetIndex();
if( pPos->nNode.GetNode().GetTextNode() )
{
SwPaM* pCursor = GetCursor();
if( pCursor != nullptr )
{
const SwTextNode* pNode = pPos->nNode.GetNode().GetTextNode();
sal_uLong nHere = pNode->GetIndex();
// iterate over ring
SwPaM* pRingStart = pCursor;
do
{
// ignore, if no mark
if( pCursor->HasMark() )
{
// check whether nHere is 'inside' pCursor
SwPosition* pStart = pCursor->Start();
sal_uLong nStartIndex = pStart->nNode.GetIndex();
SwPosition* pEnd = pCursor->End();
sal_uLong nEndIndex = pEnd->nNode.GetIndex();
if( ( nHere >= nStartIndex ) && (nHere <= nEndIndex) )
{
if( rAnchor.GetAnchorId() == RndStdIds::FLY_AS_CHAR )
{
if( ((nHere == nStartIndex) && (nIndex >= pStart->nContent.GetIndex())) || (nHere > nStartIndex) )
if( ((nHere == nEndIndex) && (nIndex < pEnd->nContent.GetIndex())) || (nHere < nEndIndex) )
return true;
}
else if( rAnchor.GetAnchorId() == RndStdIds::FLY_AT_PARA )
{
if (IsSelectFrameAnchoredAtPara(*pPos, *pStart, *pEnd))
return true;
}
else if (rAnchor.GetAnchorId() == RndStdIds::FLY_AT_CHAR)
{
if (IsDestroyFrameAnchoredAtChar(*pPos, *pStart, *pEnd))
{
return true;
}
}
break;
}
// else: this PaM doesn't point to this paragraph
}
// else: this PaM is collapsed and doesn't select anything
// next PaM in ring
pCursor = pCursor->GetNext();
}
while( pCursor != pRingStart );
}
}
return false;
}
SwFlyFrame* SwAccessibleFrameBase::getFlyFrame() const
{
SwFlyFrame* pFlyFrame = nullptr;
const SwFrame* pFrame = GetFrame();
assert(pFrame);
if( pFrame->IsFlyFrame() )
{
pFlyFrame = static_cast<SwFlyFrame*>( const_cast<SwFrame*>( pFrame ) );
}
return pFlyFrame;
}
bool SwAccessibleFrameBase::SetSelectedState( bool )
{
bool bParaSelected = GetSelectedState() || IsSelected();
if (m_isSelectedInDoc != bParaSelected)
{
m_isSelectedInDoc = bParaSelected;
FireStateChangedEvent( AccessibleStateType::SELECTED, bParaSelected );
return true;
}
return false;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|