office-gobmx/accessibility/source/extended/AccessibleBrowseBoxBase.cxx
Noel 18aafdd0f9 loplugin:refcounting in accessibility
Change-Id: Ic9e780dc3f834e2e8b5d3a8d8445419a4bd050dd
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/111300
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
2021-02-22 13:39:58 +01:00

560 lines
16 KiB
C++

/* -*- 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 <extended/AccessibleBrowseBoxBase.hxx>
#include <toolkit/helper/convert.hxx>
#include <vcl/accessibletableprovider.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <com/sun/star/accessibility/AccessibleRole.hpp>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/accessibility/IllegalAccessibleComponentStateException.hpp>
#include <unotools/accessiblerelationsethelper.hxx>
#include <vcl/window.hxx>
#include <vcl/svapp.hxx>
#include <sal/log.hxx>
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::Sequence;
using ::com::sun::star::uno::Any;
using namespace ::com::sun::star;
using namespace ::com::sun::star::accessibility;
using namespace ::comphelper;
namespace accessibility {
using namespace com::sun::star::accessibility::AccessibleStateType;
// Ctor/Dtor/disposing
AccessibleBrowseBoxBase::AccessibleBrowseBoxBase(
const css::uno::Reference< css::accessibility::XAccessible >& rxParent,
::vcl::IAccessibleTableProvider& rBrowseBox,
const css::uno::Reference< css::awt::XWindow >& _xFocusWindow,
::vcl::AccessibleBrowseBoxObjType eObjType ) :
AccessibleBrowseBoxImplHelper( m_aMutex ),
mxParent( rxParent ),
mpBrowseBox( &rBrowseBox ),
m_xFocusWindow(_xFocusWindow),
maName( rBrowseBox.GetAccessibleObjectName( eObjType ) ),
maDescription( rBrowseBox.GetAccessibleObjectDescription( eObjType ) ),
meObjType( eObjType ),
m_aClientId(0)
{
if ( m_xFocusWindow.is() )
m_xFocusWindow->addFocusListener( this );
}
AccessibleBrowseBoxBase::AccessibleBrowseBoxBase(
const css::uno::Reference< css::accessibility::XAccessible >& rxParent,
::vcl::IAccessibleTableProvider& rBrowseBox,
const css::uno::Reference< css::awt::XWindow >& _xFocusWindow,
::vcl::AccessibleBrowseBoxObjType eObjType,
const OUString& rName,
const OUString& rDescription ) :
AccessibleBrowseBoxImplHelper( m_aMutex ),
mxParent( rxParent ),
mpBrowseBox( &rBrowseBox ),
m_xFocusWindow(_xFocusWindow),
maName( rName ),
maDescription( rDescription ),
meObjType( eObjType ),
m_aClientId(0)
{
if ( m_xFocusWindow.is() )
m_xFocusWindow->addFocusListener( this );
}
AccessibleBrowseBoxBase::~AccessibleBrowseBoxBase()
{
if( isAlive() )
{
// increment ref count to prevent double call of Dtor
osl_atomic_increment( &m_refCount );
dispose();
}
}
void SAL_CALL AccessibleBrowseBoxBase::disposing()
{
::osl::MutexGuard aGuard( getMutex() );
if ( m_xFocusWindow.is() )
{
SolarMutexGuard aSolarGuard;
m_xFocusWindow->removeFocusListener( this );
}
if ( getClientId( ) )
{
AccessibleEventNotifier::TClientId nId( getClientId( ) );
setClientId( 0 );
AccessibleEventNotifier::revokeClientNotifyDisposing( nId, *this );
}
mxParent = nullptr;
mpBrowseBox = nullptr;
}
// css::accessibility::XAccessibleContext
Reference< css::accessibility::XAccessible > SAL_CALL AccessibleBrowseBoxBase::getAccessibleParent()
{
::osl::MutexGuard aGuard( getMutex() );
ensureIsAlive();
return mxParent;
}
sal_Int32 SAL_CALL AccessibleBrowseBoxBase::getAccessibleIndexInParent()
{
::osl::MutexGuard aGuard( getMutex() );
ensureIsAlive();
// -1 for child not found/no parent (according to specification)
sal_Int32 nRet = -1;
css::uno::Reference< uno::XInterface > xMeMyselfAndI( static_cast< css::accessibility::XAccessibleContext* >( this ), uno::UNO_QUERY );
// iterate over parent's children and search for this object
if( mxParent.is() )
{
css::uno::Reference< css::accessibility::XAccessibleContext >
xParentContext( mxParent->getAccessibleContext() );
if( xParentContext.is() )
{
css::uno::Reference< uno::XInterface > xChild;
sal_Int32 nChildCount = xParentContext->getAccessibleChildCount();
for( sal_Int32 nChild = 0; nChild < nChildCount; ++nChild )
{
xChild.set(xParentContext->getAccessibleChild( nChild ), css::uno::UNO_QUERY);
if ( xMeMyselfAndI.get() == xChild.get() )
{
nRet = nChild;
break;
}
}
}
}
return nRet;
}
OUString SAL_CALL AccessibleBrowseBoxBase::getAccessibleDescription()
{
::osl::MutexGuard aGuard( getMutex() );
ensureIsAlive();
return maDescription;
}
OUString SAL_CALL AccessibleBrowseBoxBase::getAccessibleName()
{
::osl::MutexGuard aGuard( getMutex() );
ensureIsAlive();
return maName;
}
Reference< css::accessibility::XAccessibleRelationSet > SAL_CALL
AccessibleBrowseBoxBase::getAccessibleRelationSet()
{
::osl::MutexGuard aGuard( getMutex() );
ensureIsAlive();
// BrowseBox does not have relations.
return new utl::AccessibleRelationSetHelper;
}
Reference< css::accessibility::XAccessibleStateSet > SAL_CALL
AccessibleBrowseBoxBase::getAccessibleStateSet()
{
SolarMethodGuard aGuard( getMutex() );
// don't check whether alive -> StateSet may contain DEFUNC
return implCreateStateSetHelper();
}
lang::Locale SAL_CALL AccessibleBrowseBoxBase::getLocale()
{
::osl::MutexGuard aGuard( getMutex() );
ensureIsAlive();
if( mxParent.is() )
{
css::uno::Reference< css::accessibility::XAccessibleContext >
xParentContext( mxParent->getAccessibleContext() );
if( xParentContext.is() )
return xParentContext->getLocale();
}
throw IllegalAccessibleComponentStateException();
}
// css::accessibility::XAccessibleComponent
sal_Bool SAL_CALL AccessibleBrowseBoxBase::containsPoint( const css::awt::Point& rPoint )
{
return tools::Rectangle( Point(), getBoundingBox().GetSize() ).IsInside( VCLPoint( rPoint ) );
}
awt::Rectangle SAL_CALL AccessibleBrowseBoxBase::getBounds()
{
return AWTRectangle( getBoundingBox() );
}
awt::Point SAL_CALL AccessibleBrowseBoxBase::getLocation()
{
return AWTPoint( getBoundingBox().TopLeft() );
}
awt::Point SAL_CALL AccessibleBrowseBoxBase::getLocationOnScreen()
{
return AWTPoint( getBoundingBoxOnScreen().TopLeft() );
}
awt::Size SAL_CALL AccessibleBrowseBoxBase::getSize()
{
return AWTSize( getBoundingBox().GetSize() );
}
void SAL_CALL AccessibleBrowseBoxBase::focusGained( const css::awt::FocusEvent& )
{
com::sun::star::uno::Any aFocused;
com::sun::star::uno::Any aEmpty;
aFocused <<= FOCUSED;
commitEvent(AccessibleEventId::STATE_CHANGED,aFocused,aEmpty);
}
void SAL_CALL AccessibleBrowseBoxBase::focusLost( const css::awt::FocusEvent& )
{
com::sun::star::uno::Any aFocused;
com::sun::star::uno::Any aEmpty;
aFocused <<= FOCUSED;
commitEvent(AccessibleEventId::STATE_CHANGED,aEmpty,aFocused);
}
// css::accessibility::XAccessibleEventBroadcaster
void SAL_CALL AccessibleBrowseBoxBase::addAccessibleEventListener(
const css::uno::Reference< css::accessibility::XAccessibleEventListener>& _rxListener )
{
if ( _rxListener.is() )
{
::osl::MutexGuard aGuard( getMutex() );
if ( !getClientId( ) )
setClientId( AccessibleEventNotifier::registerClient( ) );
AccessibleEventNotifier::addEventListener( getClientId( ), _rxListener );
}
}
void SAL_CALL AccessibleBrowseBoxBase::removeAccessibleEventListener(
const css::uno::Reference< css::accessibility::XAccessibleEventListener>& _rxListener )
{
if( !(_rxListener.is() && getClientId( )) )
return;
::osl::MutexGuard aGuard( getMutex() );
sal_Int32 nListenerCount = AccessibleEventNotifier::removeEventListener( getClientId( ), _rxListener );
if ( !nListenerCount )
{
// no listeners anymore
// -> revoke ourself. This may lead to the notifier thread dying (if we were the last client),
// and at least to us not firing any events anymore, in case somebody calls
// NotifyAccessibleEvent, again
AccessibleEventNotifier::TClientId nId( getClientId( ) );
setClientId( 0 );
AccessibleEventNotifier::revokeClient( nId );
}
}
// XTypeProvider
Sequence< sal_Int8 > SAL_CALL AccessibleBrowseBoxBase::getImplementationId()
{
return css::uno::Sequence<sal_Int8>();
}
// XServiceInfo
sal_Bool SAL_CALL AccessibleBrowseBoxBase::supportsService(
const OUString& rServiceName )
{
return cppu::supportsService(this, rServiceName);
}
Sequence< OUString > SAL_CALL AccessibleBrowseBoxBase::getSupportedServiceNames()
{
return { "com.sun.star.accessibility.AccessibleContext" };
}
// other public methods
void AccessibleBrowseBoxBase::setAccessibleName( const OUString& rName )
{
::osl::ClearableMutexGuard aGuard( getMutex() );
Any aOld;
aOld <<= maName;
maName = rName;
aGuard.clear();
commitEvent(
AccessibleEventId::NAME_CHANGED,
uno::Any( maName ),
aOld );
}
void AccessibleBrowseBoxBase::setAccessibleDescription( const OUString& rDescription )
{
::osl::ClearableMutexGuard aGuard( getMutex() );
Any aOld;
aOld <<= maDescription;
maDescription = rDescription;
aGuard.clear();
commitEvent(
AccessibleEventId::DESCRIPTION_CHANGED,
uno::Any( maDescription ),
aOld );
}
// internal virtual methods
bool AccessibleBrowseBoxBase::implIsShowing()
{
bool bShowing = false;
if( mxParent.is() )
{
css::uno::Reference< css::accessibility::XAccessibleComponent >
xParentComp( mxParent->getAccessibleContext(), uno::UNO_QUERY );
if( xParentComp.is() )
bShowing = implGetBoundingBox().IsOver(
VCLRectangle( xParentComp->getBounds() ) );
}
return bShowing;
}
rtl::Reference<::utl::AccessibleStateSetHelper> AccessibleBrowseBoxBase::implCreateStateSetHelper()
{
rtl::Reference<::utl::AccessibleStateSetHelper>
pStateSetHelper = new ::utl::AccessibleStateSetHelper;
if( isAlive() )
{
// SHOWING done with mxParent
if( implIsShowing() )
pStateSetHelper->AddState( AccessibleStateType::SHOWING );
// BrowseBox fills StateSet with states depending on object type
mpBrowseBox->FillAccessibleStateSet( *pStateSetHelper, getType() );
}
else
pStateSetHelper->AddState( AccessibleStateType::DEFUNC );
return pStateSetHelper;
}
// internal helper methods
bool AccessibleBrowseBoxBase::isAlive() const
{
return !rBHelper.bDisposed && !rBHelper.bInDispose && mpBrowseBox;
}
void AccessibleBrowseBoxBase::ensureIsAlive() const
{
if( !isAlive() )
throw lang::DisposedException();
}
tools::Rectangle AccessibleBrowseBoxBase::getBoundingBox()
{
SolarMethodGuard aGuard(getMutex());
ensureIsAlive();
tools::Rectangle aRect = implGetBoundingBox();
if ( aRect.Left() == 0 && aRect.Top() == 0 && aRect.Right() == 0 && aRect.Bottom() == 0 )
{
SAL_WARN( "accessibility", "rectangle doesn't exist" );
}
return aRect;
}
tools::Rectangle AccessibleBrowseBoxBase::getBoundingBoxOnScreen()
{
SolarMethodGuard aGuard(getMutex());
ensureIsAlive();
tools::Rectangle aRect = implGetBoundingBoxOnScreen();
if ( aRect.Left() == 0 && aRect.Top() == 0 && aRect.Right() == 0 && aRect.Bottom() == 0 )
{
SAL_WARN( "accessibility", "rectangle doesn't exist" );
}
return aRect;
}
void AccessibleBrowseBoxBase::commitEvent(
sal_Int16 _nEventId, const Any& _rNewValue, const Any& _rOldValue )
{
osl::MutexGuard aGuard( getMutex() );
if ( !getClientId( ) )
// if we don't have a client id for the notifier, then we don't have listeners, then
// we don't need to notify anything
return;
// build an event object
AccessibleEventObject aEvent;
aEvent.Source = *this;
aEvent.EventId = _nEventId;
aEvent.OldValue = _rOldValue;
aEvent.NewValue = _rNewValue;
// let the notifier handle this event
AccessibleEventNotifier::addEvent( getClientId( ), aEvent );
}
sal_Int16 SAL_CALL AccessibleBrowseBoxBase::getAccessibleRole()
{
osl::MutexGuard aGuard( getMutex() );
ensureIsAlive();
sal_Int16 nRole = AccessibleRole::UNKNOWN;
switch ( meObjType )
{
case vcl::BBTYPE_ROWHEADERCELL:
nRole = AccessibleRole::ROW_HEADER;
break;
case vcl::BBTYPE_COLUMNHEADERCELL:
nRole = AccessibleRole::COLUMN_HEADER;
break;
case vcl::BBTYPE_COLUMNHEADERBAR:
case vcl::BBTYPE_ROWHEADERBAR:
case vcl::BBTYPE_TABLE:
nRole = AccessibleRole::TABLE;
break;
case vcl::BBTYPE_TABLECELL:
nRole = AccessibleRole::TABLE_CELL;
break;
case vcl::BBTYPE_BROWSEBOX:
nRole = AccessibleRole::PANEL;
break;
case vcl::BBTYPE_CHECKBOXCELL:
nRole = AccessibleRole::CHECK_BOX;
break;
}
return nRole;
}
Reference<XAccessible > SAL_CALL AccessibleBrowseBoxBase::getAccessibleAtPoint( const css::awt::Point& )
{
return nullptr;
}
void SAL_CALL AccessibleBrowseBoxBase::disposing( const css::lang::EventObject& )
{
m_xFocusWindow = nullptr;
}
sal_Int32 SAL_CALL AccessibleBrowseBoxBase::getForeground( )
{
SolarMethodGuard aGuard(getMutex());
ensureIsAlive();
Color nColor;
vcl::Window* pInst = mpBrowseBox->GetWindowInstance();
if ( pInst )
{
if ( pInst->IsControlForeground() )
nColor = pInst->GetControlForeground();
else
{
vcl::Font aFont;
if ( pInst->IsControlFont() )
aFont = pInst->GetControlFont();
else
aFont = pInst->GetFont();
nColor = aFont.GetColor();
}
}
return sal_Int32(nColor);
}
sal_Int32 SAL_CALL AccessibleBrowseBoxBase::getBackground( )
{
SolarMethodGuard aGuard(getMutex());
ensureIsAlive();
Color nColor;
vcl::Window* pInst = mpBrowseBox->GetWindowInstance();
if ( pInst )
{
if ( pInst->IsControlBackground() )
nColor = pInst->GetControlBackground();
else
nColor = pInst->GetBackground().GetColor();
}
return sal_Int32(nColor);
}
// XInterface
IMPLEMENT_FORWARD_XINTERFACE2( BrowseBoxAccessibleElement, AccessibleBrowseBoxBase, BrowseBoxAccessibleElement_Base )
// XTypeProvider
IMPLEMENT_FORWARD_XTYPEPROVIDER2( BrowseBoxAccessibleElement, AccessibleBrowseBoxBase, BrowseBoxAccessibleElement_Base )
// css::accessibility::XAccessible
Reference< css::accessibility::XAccessibleContext > SAL_CALL BrowseBoxAccessibleElement::getAccessibleContext()
{
osl::MutexGuard aGuard( getMutex() );
ensureIsAlive();
return this;
}
BrowseBoxAccessibleElement::BrowseBoxAccessibleElement( const css::uno::Reference< css::accessibility::XAccessible >& rxParent, ::vcl::IAccessibleTableProvider& rBrowseBox,
const css::uno::Reference< css::awt::XWindow >& _xFocusWindow, ::vcl::AccessibleBrowseBoxObjType eObjType )
:AccessibleBrowseBoxBase( rxParent, rBrowseBox, _xFocusWindow, eObjType )
{
}
BrowseBoxAccessibleElement::BrowseBoxAccessibleElement( const css::uno::Reference< css::accessibility::XAccessible >& rxParent, ::vcl::IAccessibleTableProvider& rBrowseBox,
const css::uno::Reference< css::awt::XWindow >& _xFocusWindow, ::vcl::AccessibleBrowseBoxObjType eObjType,
const OUString& rName, const OUString& rDescription )
:AccessibleBrowseBoxBase( rxParent, rBrowseBox, _xFocusWindow, eObjType, rName, rDescription )
{
}
BrowseBoxAccessibleElement::~BrowseBoxAccessibleElement( )
{
}
} // namespace accessibility
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */