Files
libreoffice/svx/source/accessibility/AccessibleTextHelper.cxx
2002-05-16 15:12:20 +00:00

1205 lines
43 KiB
C++

/*************************************************************************
*
* $RCSfile: AccessibleTextHelper.cxx,v $
*
* $Revision: 1.1 $
*
* last change: $Author: thb $ $Date: 2002-05-16 16:10:57 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (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.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#pragma hdrstop
//------------------------------------------------------------------------
//
// Global header
//
//------------------------------------------------------------------------
#include <limits.h>
#include <memory>
#include <algorithm>
#ifndef _VOS_MUTEX_HXX_
#include <vos/mutex.hxx>
#endif
#ifndef _COM_SUN_STAR_UNO_ANY_HXX_
#include <com/sun/star/uno/Any.hxx>
#endif
#ifndef _COM_SUN_STAR_UNO_REFERENCE_HXX_
#include <com/sun/star/uno/Reference.hxx>
#endif
#ifndef _CPPUHELPER_WEAKREF_HXX_
#include <cppuhelper/weakref.hxx>
#endif
#ifndef _COM_SUN_STAR_AWT_POINT_HPP_
#include <com/sun/star/awt/Point.hpp>
#endif
#ifndef _COM_SUN_STAR_AWT_RECTANGLE_HPP_
#include <com/sun/star/awt/Rectangle.hpp>
#endif
#ifndef _DRAFTS_COM_SUN_STAR_ACCESSIBILITY_ACCESSIBLEEVENTID_HPP_
#include <drafts/com/sun/star/accessibility/AccessibleEventId.hpp>
#endif
#ifndef _DRAFTS_COM_SUN_STAR_ACCESSIBILITY_XACCESSIBLE_HPP_
#include <drafts/com/sun/star/accessibility/XAccessible.hpp>
#endif
#ifndef _DRAFTS_COM_SUN_STAR_ACCESSIBILITY_XACCESSIBLECONTEXT_HPP_
#include <drafts/com/sun/star/accessibility/XAccessibleContext.hpp>
#endif
#ifndef _DRAFTS_COM_SUN_STAR_ACCESSIBILITY_XACCESSIBLECOMPONENT_HPP_
#include <drafts/com/sun/star/accessibility/XAccessibleComponent.hpp>
#endif
#ifndef _DRAFTS_COM_SUN_STAR_ACCESSIBILITY_ACCESSIBLEROLE_HPP_
#include <drafts/com/sun/star/accessibility/AccessibleRole.hpp>
#endif
#ifndef _DRAFTS_COM_SUN_STAR_ACCESSIBILITY_ACCESSIBLETEXTTYPE_HPP_
#include <drafts/com/sun/star/accessibility/AccessibleTextType.hpp>
#endif
#ifndef _DRAFTS_COM_SUN_STAR_ACCESSIBILITY_XACCESSIBLETEXT_HPP_
#include <drafts/com/sun/star/accessibility/XAccessibleText.hpp>
#endif
#ifndef _DRAFTS_COM_SUN_STAR_ACCESSIBILITY_XACCESSIBLEEDITABLETEXT_HPP_
#include <drafts/com/sun/star/accessibility/XAccessibleEditableText.hpp>
#endif
#ifndef _DRAFTS_COM_SUN_STAR_ACCESSIBILITY_ACCESSIBLESTATETYPE_HPP_
#include <drafts/com/sun/star/accessibility/AccessibleStateType.hpp>
#endif
#ifndef _UTL_ACCESSIBLESTATESETHELPER_HXX_
#include <unotools/accessiblestatesethelper.hxx>
#endif
//------------------------------------------------------------------------
//
// Project-local header
//
//------------------------------------------------------------------------
#ifndef _SVX_UNOEDACC_HXX_
#include "unoedacc.hxx"
#endif
#ifndef _SVX_UNOSHAPE_HXX
#include "unoshape.hxx"
#endif
#ifndef _UNO_LINGU_HXX
#include "unolingu.hxx"
#endif
#ifndef _SVX_UNOTEXT_HXX
#include "unotext.hxx"
#endif
#include "unoedhlp.hxx"
#include "unopracc.hxx"
#include "AccessibleParaManager.hxx"
#include "AccessibleEditableTextPara.hxx"
#include "svdmodel.hxx"
#include "svdpntv.hxx"
#include "editdata.hxx"
#include "editeng.hxx"
#include "editview.hxx"
using namespace ::com::sun::star;
using namespace ::drafts::com::sun::star::accessibility;
//------------------------------------------------------------------------
//
// SvxAccessibleTextHelper_Impl declaration
//
//------------------------------------------------------------------------
class SvxAccessibleTextHelper_Impl : public SfxListener
{
public:
// receive pointer to our frontend class and view window
SvxAccessibleTextHelper_Impl( const uno::Reference< XAccessible >& rInterface );
~SvxAccessibleTextHelper_Impl();
// XAccessibleContext child handling methods
sal_Int32 SAL_CALL getAccessibleChildCount() throw (uno::RuntimeException);
uno::Reference< XAccessible > SAL_CALL getAccessibleChild( sal_Int32 i ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException);
// XAccessibleEventBroadcaster child related methods
void SAL_CALL addEventListener( const uno::Reference< XAccessibleEventListener >& xListener ) throw (uno::RuntimeException);
void SAL_CALL removeEventListener( const uno::Reference< XAccessibleEventListener >& xListener ) throw (uno::RuntimeException);
// XAccessibleComponent child related methods
uno::Reference< XAccessible > SAL_CALL getAccessibleAt( const awt::Point& aPoint ) throw (uno::RuntimeException);
SvxEditSourceAdapter& GetEditSource() const throw (uno::RuntimeException);
void SetEditSource( ::std::auto_ptr< SvxEditSource > pEditSource ) throw (uno::RuntimeException);
void SetOffset( const Point& );
const Point& GetOffset() const { return maOffset; } // Strictly correct only with locked solar mutex!
sal_Bool IsSelected() const;
// do NOT hold object mutex when calling this! Danger of deadlock
void FireEvent( const sal_Int16 nEventId, const uno::Any& rNewValue = uno::Any(), const uno::Any& rOldValue = uno::Any() ) const;
#ifdef DBG_UTIL
void CheckInvariants() const;
#endif
// checks all children for visibility, throws away invisible ones
void UpdateVisibleChildren();
private:
// syntactic sugar for FireEvent
void GotPropertyEvent( const uno::Any& rNewValue, const sal_Int16 nEventId ) const { FireEvent( nEventId, rNewValue ); }
void LostPropertyEvent( const uno::Any& rOldValue, const sal_Int16 nEventId ) const { FireEvent( nEventId, uno::Any(), rOldValue ); }
// shutdown usage of current edit source on myself and the children.
void ShutdownEditSource() throw (uno::RuntimeException);
virtual void Notify( SfxBroadcaster& rBC, const SfxHint& rHint );
// lock solar mutex before
SvxTextForwarder& GetTextForwarder() const throw (uno::RuntimeException);
// lock solar mutex before
SvxViewForwarder& GetViewForwarder() const throw (uno::RuntimeException);
// lock solar mutex before
SvxEditViewForwarder& GetEditViewForwarder( sal_Bool bCreate = sal_False ) const throw (uno::RuntimeException);
// are we in edit mode?
sal_Bool IsActive() const throw (uno::RuntimeException);
void UpdateVisibleData();
// calls SetSelection on the forwarder and updates maLastSelection
// cache. Caution: calls StateChangeEvent and sets object into
// edit mode!
void UpdateSelection( const ESelection& );
/// our current offset to the containing shape/cell (guarded by solar mutex)
Point maOffset;
// our frontend class (the one implementing the actual
// interface). That's not necessarily the one containing the impl
// pointer!
const uno::Reference< XAccessible > mxFrontEnd;
// a wrapper for the text forwarders (guarded by solar mutex)
mutable SvxEditSourceAdapter maEditSource;
// store last selection (to correctly report selection changes, guarded by solar mutex)
ESelection maLastSelection;
// cache range of visible children (guarded by solar mutex)
sal_Int32 mnFirstVisibleChild;
sal_Int32 mnLastVisibleChild;
// the object handling our children (guarded by solar mutex)
accessibility::AccessibleParaManager maParaManager;
// must be before maStateListeners, has to live longer
mutable ::osl::Mutex maMutex;
// handles our event listeners (guarded by maMutex)
::cppu::OInterfaceContainerHelper maStateListeners;
};
//------------------------------------------------------------------------
//
// SvxAccessibleTextHelper_Impl implementation
//
//------------------------------------------------------------------------
SvxAccessibleTextHelper_Impl::SvxAccessibleTextHelper_Impl( const uno::Reference< XAccessible >& rInterface ) :
maOffset(0,0),
mxFrontEnd( rInterface ),
maLastSelection( 0,0,0,0 ),
mnFirstVisibleChild( -1 ),
mnLastVisibleChild( -2 ),
maStateListeners( maMutex )
{
}
SvxAccessibleTextHelper_Impl::~SvxAccessibleTextHelper_Impl()
{
::vos::OGuard aGuard( Application::GetSolarMutex() );
try
{
// shutdown and release edit source
SetEditSource( ::std::auto_ptr< SvxEditSource >() );
}
catch( const uno::RuntimeException& ) {}
// owner is responsible for dispose and clear on listeners
}
SvxTextForwarder& SvxAccessibleTextHelper_Impl::GetTextForwarder() const throw (uno::RuntimeException)
{
if( !maEditSource.IsValid() )
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("Unknown edit source")), mxFrontEnd);
SvxTextForwarder* pTextForwarder = maEditSource.GetTextForwarder();
if( !pTextForwarder )
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("Unable to fetch text forwarder, model might be dead")), mxFrontEnd);
if( pTextForwarder->IsValid() )
return *pTextForwarder;
else
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("Text forwarder is invalid, model might be dead")), mxFrontEnd);
}
SvxViewForwarder& SvxAccessibleTextHelper_Impl::GetViewForwarder() const throw (uno::RuntimeException)
{
if( !maEditSource.IsValid() )
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("Unknown edit source")), mxFrontEnd);
SvxViewForwarder* pViewForwarder = maEditSource.GetViewForwarder();
if( !pViewForwarder )
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("Unable to fetch view forwarder, model might be dead")), mxFrontEnd);
if( pViewForwarder->IsValid() )
return *pViewForwarder;
else
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("View forwarder is invalid, model might be dead")), mxFrontEnd);
}
SvxEditViewForwarder& SvxAccessibleTextHelper_Impl::GetEditViewForwarder( sal_Bool bCreate ) const throw (uno::RuntimeException)
{
if( !maEditSource.IsValid() )
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("Unknown edit source")), mxFrontEnd);
SvxEditViewForwarder* pViewForwarder = maEditSource.GetEditViewForwarder( bCreate );
if( !pViewForwarder )
{
if( bCreate )
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("Unable to fetch edit view forwarder, model might be dead")), mxFrontEnd);
else
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("No edit view forwarder, object not in edit mode")), mxFrontEnd);
}
if( pViewForwarder->IsValid() )
return *pViewForwarder;
else
{
if( bCreate )
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("View forwarder is invalid, model might be dead")), mxFrontEnd);
else
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("View forwarder is invalid, object not in edit mode")), mxFrontEnd);
}
}
SvxEditSourceAdapter& SvxAccessibleTextHelper_Impl::GetEditSource() const throw (uno::RuntimeException)
{
if( maEditSource.IsValid() )
return maEditSource;
else
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("SvxAccessibleTextHelper_Impl::GetEditSource: no edit source")), mxFrontEnd );
}
sal_Bool SvxAccessibleTextHelper_Impl::IsSelected() const
{
sal_Bool bRet = sal_False;
try
{
ESelection aSelection;
bRet = GetEditViewForwarder().GetSelection( aSelection );
}
catch( const uno::RuntimeException& ) {}
return bRet;
}
sal_Bool SvxAccessibleTextHelper_Impl::IsActive() const throw (uno::RuntimeException)
{
SvxEditSource& rEditSource = GetEditSource();
SvxEditViewForwarder* pViewForwarder = rEditSource.GetEditViewForwarder();
if( !pViewForwarder )
return sal_False;
if( pViewForwarder->IsValid() )
return sal_True;
else
return sal_False;
}
void SvxAccessibleTextHelper_Impl::UpdateSelection( const ESelection& rSelection )
{
if( !maLastSelection.IsEqual( rSelection ) )
{
// notify all affected paragraphs (TODO: may be suboptimal,
// since some paragraphs might stay selected)
maParaManager.FireEvent( maLastSelection.nStartPara,
maLastSelection.nEndPara,
AccessibleEventId::ACCESSIBLE_SELECTION_EVENT );
maParaManager.FireEvent( maLastSelection.nStartPara,
maLastSelection.nStartPara,
AccessibleEventId::ACCESSIBLE_CARET_EVENT );
maParaManager.FireEvent( rSelection.nStartPara,
rSelection.nEndPara,
AccessibleEventId::ACCESSIBLE_SELECTION_EVENT );
maParaManager.FireEvent( rSelection.nStartPara,
rSelection.nStartPara,
AccessibleEventId::ACCESSIBLE_CARET_EVENT );
maLastSelection = rSelection;
}
}
// functor for sending child events
class SvxAccessibleTextHelper_SendAccessibleChildEvent : public ::std::unary_function< accessibility::AccessibleEditableTextPara&, void >
{
public:
SvxAccessibleTextHelper_SendAccessibleChildEvent( SvxAccessibleTextHelper_Impl& rImpl ) : mrImpl(rImpl) {}
void operator()( accessibility::AccessibleEditableTextPara& rPara )
{
uno::Reference< XAccessible > xChild( static_cast< ::cppu::OWeakObject* > ( &rPara ), uno::UNO_QUERY );
mrImpl.FireEvent(AccessibleEventId::ACCESSIBLE_CHILD_EVENT, uno::Any(), uno::makeAny( xChild ) );
}
private:
SvxAccessibleTextHelper_Impl& mrImpl;
};
void SvxAccessibleTextHelper_Impl::ShutdownEditSource() throw (uno::RuntimeException)
{
// This should only be called with solar mutex locked, i.e. from the main office thread
// invalidate children
maParaManager.SetEditSource( NULL );
// loosing all children
maParaManager.ForEach( SvxAccessibleTextHelper_SendAccessibleChildEvent( *this ) );
maParaManager.SetNum(0);
// quit listen on stale edit source
if( maEditSource.IsValid() )
EndListening( maEditSource.GetBroadcaster() );
maEditSource.SetEditSource( ::std::auto_ptr< SvxEditSource >(NULL) );
}
void SvxAccessibleTextHelper_Impl::SetEditSource( ::std::auto_ptr< SvxEditSource > pEditSource ) throw (uno::RuntimeException)
{
// This should only be called with solar mutex locked, i.e. from the main office thread
// shutdown old edit source
ShutdownEditSource();
// set new edit source
maEditSource.SetEditSource( pEditSource );
// init child vector to the current child count
if( maEditSource.IsValid() )
{
maParaManager.SetNum( GetTextForwarder().GetParagraphCount() );
// listen on new edit source
StartListening( maEditSource.GetBroadcaster() );
UpdateVisibleChildren();
}
}
void SvxAccessibleTextHelper_Impl::SetOffset( const Point& rPoint )
{
maOffset = rPoint;
maParaManager.SetEEOffset( rPoint );
// in all cases, check visibility afterwards.
UpdateVisibleChildren();
}
void SvxAccessibleTextHelper_Impl::UpdateVisibleChildren()
{
try
{
SvxTextForwarder& rCacheTF = GetTextForwarder();
SvxViewForwarder& rCacheVF = GetViewForwarder();
Rectangle aViewArea = rCacheVF.GetVisArea();
if( IsActive() )
{
// maybe the edit view scrolls, adapt aViewArea
Rectangle aEditViewArea = GetEditViewForwarder().GetVisArea();
aViewArea += aEditViewArea.TopLeft();
// now determine intersection
aViewArea.Intersection( aEditViewArea );
}
Rectangle aTmpBB, aParaBB;
sal_Bool bFirstChild = sal_True;
sal_Int32 nCurrPara;
sal_Int32 nParas=rCacheTF.GetParagraphCount();
mnFirstVisibleChild = -1;
mnLastVisibleChild = -2;
for( nCurrPara=0; nCurrPara<nParas; ++nCurrPara )
{
DBG_ASSERT(nCurrPara >= 0 && nCurrPara <= USHRT_MAX,
"SvxAccessibleTextHelper_Impl::UpdateVisibleChildren: index value overflow");
aTmpBB = rCacheTF.GetParaBounds( static_cast< USHORT >( nCurrPara ) );
// convert to screen coordinates
aParaBB = accessibility::AccessibleEditableTextPara::LogicToPixel( aTmpBB, rCacheTF.GetMapMode(), rCacheVF );
if( aParaBB.IsOver( aViewArea ) )
{
// at least partially visible
if( bFirstChild )
{
bFirstChild = sal_False;
mnFirstVisibleChild = nCurrPara;
}
mnLastVisibleChild = nCurrPara;
GotPropertyEvent( uno::makeAny( getAccessibleChild(nCurrPara) ), AccessibleEventId::ACCESSIBLE_CHILD_EVENT );
}
else
{
// not or no longer visible
if( maParaManager.IsReferencable( nCurrPara ) )
{
LostPropertyEvent( uno::makeAny( getAccessibleChild(nCurrPara) ), AccessibleEventId::ACCESSIBLE_CHILD_EVENT );
// clear reference
maParaManager.Release( nCurrPara );
}
}
}
}
catch( const uno::RuntimeException& )
{
DBG_ERROR("SvxAccessibleTextHelper_Impl::UpdateVisibleChildren error while determining visible children");
// something failed - currently no children
mnFirstVisibleChild = -1;
mnLastVisibleChild = -2;
maParaManager.ForEach( SvxAccessibleTextHelper_SendAccessibleChildEvent( *this ) );
maParaManager.SetNum(0);
}
}
// functor for checking changes in paragraph bounding boxes
class SvxAccessibleTextHelper_UpdateChildBounds : public ::std::unary_function< const accessibility::AccessibleParaManager::WeakChild&,
accessibility::AccessibleParaManager::WeakChild >
{
public:
SvxAccessibleTextHelper_UpdateChildBounds( SvxAccessibleTextHelper_Impl& rImpl ) : mrImpl(rImpl) {}
accessibility::AccessibleParaManager::WeakChild operator()( const accessibility::AccessibleParaManager::WeakChild& rChild )
{
// retrieve hard reference from weak one
accessibility::AccessibleParaManager::WeakPara::HardRefType aHardRef( rChild.first.get() );
if( aHardRef.is() )
{
awt::Rectangle aNewRect = aHardRef->getBounds();
const awt::Rectangle& aOldRect = rChild.second;
if( aNewRect.X != aOldRect.X ||
aNewRect.Y != aOldRect.Y ||
aNewRect.Width != aOldRect.Width ||
aNewRect.Height != aOldRect.Height )
{
// visible data changed
aHardRef->FireEvent( AccessibleEventId::ACCESSIBLE_VISIBLE_DATA_EVENT );
// update bounds
return accessibility::AccessibleParaManager::WeakChild( rChild.first, aNewRect );
}
}
// identity transform
return rChild;
}
private:
SvxAccessibleTextHelper_Impl& mrImpl;
};
void SvxAccessibleTextHelper_Impl::UpdateVisibleData()
{
// send CHILD_EVENT to affected children
::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator begin = maParaManager.begin();
::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator end = begin;
::std::advance< ::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator, sal_Int32 >( begin, mnFirstVisibleChild );
::std::advance< ::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator, sal_Int32 >( end, mnLastVisibleChild );
::std::for_each( begin, end, SvxAccessibleTextHelper_UpdateChildBounds( *this ) );
}
#ifdef DBG_UTIL
void SvxAccessibleTextHelper_Impl::CheckInvariants() const
{
::vos::OGuard aGuard( Application::GetSolarMutex() );
if( !mxFrontEnd.is() )
DBG_ERROR( "SvxAccessibleTextHelper: no frontend" );
if( mnFirstVisibleChild >= 0 &&
mnFirstVisibleChild > mnLastVisibleChild )
{
DBG_ERROR( "SvxAccessibleTextHelper: range invalid" );
}
}
#endif
void SvxAccessibleTextHelper_Impl::Notify( SfxBroadcaster& rBC, const SfxHint& rHint )
{
const SfxSimpleHint* pSimpleHint = PTR_CAST( SfxSimpleHint, &rHint );
const TextHint* pTextHint = PTR_CAST( TextHint, &rHint );
const SvxViewHint* pViewHint = PTR_CAST( SvxViewHint, &rHint );
const SvxEditSourceHint* pEditSourceHint = PTR_CAST( SvxEditSourceHint, &rHint );
try
{
// precondition: solar mutex locked
if( pEditSourceHint )
{
if( pEditSourceHint->GetValue() < GetTextForwarder().GetParagraphCount() )
{
switch( pEditSourceHint->GetId() )
{
case EDITSOURCE_HINT_PARASMOVED:
{
DBG_ASSERT( pEditSourceHint->GetStartValue() < GetTextForwarder().GetParagraphCount() &&
pEditSourceHint->GetEndValue() < GetTextForwarder().GetParagraphCount(),
"SvxAccessibleTextHelper_Impl::NotifyHdl: Invalid notification");
const sal_Int32 nParas = GetTextForwarder().GetParagraphCount();
sal_Int32 nFirst, nMiddle, nLast;
/* rotate paragraphs
* =================
*
* Three cases:
*
* 1.
* ... nParagraph ... nParam1 ... nParam2 ...
* |______________[xxxxxxxxxxx]
* becomes
* [xxxxxxxxxxx]|______________
*
* tail is 0
*
* 2.
* ... nParam1 ... nParagraph ... nParam2 ...
* [xxxxxxxxxxx|xxxxxxxxxxxxxx]____________
* becomes
* ____________[xxxxxxxxxxx|xxxxxxxxxxxxxx]
*
* tail is nParagraph - nParam1
*
* 3.
* ... nParam1 ... nParam2 ... nParagraph ...
* [xxxxxxxxxxx]___________|____________
* becomes
* ___________|____________[xxxxxxxxxxx]
*
* tail is nParam2 - nParam1
*/
// sort nParagraph, nParam1 and nParam2 in ascending order, calc range
if( pEditSourceHint->GetValue() < pEditSourceHint->GetStartValue() )
{
nFirst = pEditSourceHint->GetValue();
nMiddle = pEditSourceHint->GetStartValue();
nLast = pEditSourceHint->GetEndValue();
}
else if( pEditSourceHint->GetValue() < pEditSourceHint->GetEndValue() )
{
nFirst = pEditSourceHint->GetStartValue();
nMiddle = pEditSourceHint->GetValue();
nLast = pEditSourceHint->GetEndValue() + nMiddle - nFirst;
}
else
{
nFirst = pEditSourceHint->GetStartValue();
nMiddle = pEditSourceHint->GetEndValue();
nLast = pEditSourceHint->GetValue() + nMiddle - nFirst;
}
if( nFirst < nParas && nMiddle < nParas && nLast < nParas )
{
// since we have no "paragraph index
// changed" event on UAA, remove
// [first,last] and insert again later (in
// UpdateVisibleChildren)
// maParaManager.Rotate( nFirst, nMiddle, nLast );
maParaManager.Release(nFirst, nLast);
// send CHILD_EVENT to affected children
::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator begin = maParaManager.begin();
::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator end = begin;
::std::advance< ::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator, sal_Int32 >( begin, nFirst );
::std::advance< ::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator, sal_Int32 >( end, nLast );
::std::for_each( begin, end,
::accessibility::AccessibleParaManager::WeakChildAdapter< SvxAccessibleTextHelper_SendAccessibleChildEvent >
(SvxAccessibleTextHelper_SendAccessibleChildEvent( *this )) );
}
#ifdef DBG_UTIL
else
{
DBG_ERROR("SvxAccessibleTextHelper_Impl::NotifyHdl: Invalid move ranges");
}
#endif
break;
}
case EDITSOURCE_HINT_SELECTIONCHANGED:
// notify listeners
ESelection aSelection;
try
{
if( GetEditViewForwarder().GetSelection( aSelection ) )
UpdateSelection( aSelection );
else
UpdateSelection( ESelection() );
}
// maybe we're not in edit mode (this is not an error)
catch( const uno::RuntimeException& ) {}
break;
}
// in all cases, check visibility afterwards.
UpdateVisibleChildren();
}
#ifdef DBG_UTIL
else
{
DBG_ERROR("SvxAccessibleTextHelper_Impl::NotifyHdl: Invalid notification");
}
#endif
}
else if( pTextHint )
{
if( pTextHint->GetValue() < GetTextForwarder().GetParagraphCount() )
{
sal_Bool bUpdateVisibleData = sal_False;
switch( pTextHint->GetId() )
{
case TEXT_HINT_MODIFIED:
// notify listeners
maParaManager.FireEvent( pTextHint->GetValue(), AccessibleEventId::ACCESSIBLE_TEXT_EVENT );
break;
case TEXT_HINT_PARAINSERTED:
{
// resize child vector to the current child count
const sal_Int32 nParas = GetTextForwarder().GetParagraphCount();
maParaManager.SetNum( nParas );
// since we have no "paragraph index
// changed" event on UAA, remove
// [first,last] and insert again later (in
// UpdateVisibleChildren)
// move successors of inserted paragraph one position further
//maParaManager.MoveRightFrom( pTextHint->GetValue() );
// release everything from the insertion position until the end
maParaManager.Release(pTextHint->GetValue(), nParas);
// send CHILD_EVENT to affected children
::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator begin = maParaManager.begin();
::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator end = begin;
::std::advance< ::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator, sal_Int32 >( begin, pTextHint->GetValue() );
::std::advance< ::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator, sal_Int32 >( end, nParas );
::std::for_each( begin, end,
::accessibility::AccessibleParaManager::WeakChildAdapter< SvxAccessibleTextHelper_SendAccessibleChildEvent >
(SvxAccessibleTextHelper_SendAccessibleChildEvent( *this )) );
break;
}
case TEXT_HINT_PARAREMOVED:
{
const sal_Int32 nParas = GetTextForwarder().GetParagraphCount();
// since we have no "paragraph index
// changed" event on UAA, remove
// [first,last] and insert again later (in
// UpdateVisibleChildren)
// move successors of removed paragraph one position closer
// maParaManager.MoveLeftFrom( pTextHint->GetValue() );
// release everything from the remove position until the end
maParaManager.Release(pTextHint->GetValue(), nParas);
// send CHILD_EVENT to affected children
::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator begin = maParaManager.begin();
::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator end = begin;
::std::advance< ::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator, sal_Int32 >( begin, pTextHint->GetValue() );
::std::advance< ::accessibility::AccessibleParaManager::VectorOfChildren::const_iterator, sal_Int32 >( end, nParas );
::std::for_each( begin, end,
::accessibility::AccessibleParaManager::WeakChildAdapter< SvxAccessibleTextHelper_SendAccessibleChildEvent >
(SvxAccessibleTextHelper_SendAccessibleChildEvent( *this )) );
// resize child vector to the current child count
maParaManager.SetNum( nParas );
break;
}
case TEXT_HINT_TEXTHEIGHTCHANGED:
bUpdateVisibleData = sal_True;
break;
case TEXT_HINT_VIEWSCROLLED:
bUpdateVisibleData = sal_True;
break;
}
// in all cases, check visibility afterwards.
UpdateVisibleChildren();
if( bUpdateVisibleData )
UpdateVisibleData();
}
#ifdef DBG_UTIL
else
{
DBG_ERROR("SvxAccessibleTextHelper_Impl::NotifyHdl: Invalid notification");
}
#endif
}
else if( pViewHint )
{
switch( pViewHint->GetId() )
{
case SVX_HINT_VIEWCHANGED:
// just check visibility
break;
}
// in all cases, check visibility afterwards.
UpdateVisibleChildren();
}
// it's VITAL to keep the SfxSimpleHint last! It's the base of some classes above!
else if( pSimpleHint )
{
switch( pSimpleHint->GetId() )
{
case SFX_HINT_DYING:
// edit source is dying under us, become defunc then
try
{
// make edit source inaccessible
// Note: cannot destroy it here, since we're called from there!
ShutdownEditSource();
}
catch( const uno::RuntimeException& ) {}
break;
}
}
}
catch( const uno::RuntimeException& )
{
#ifdef DBG_UTIL
DBG_ERROR("SvxAccessibleTextHelper_Impl::Notify: Unhandled exception.");
#endif
}
}
void SvxAccessibleTextHelper_Impl::FireEvent( const sal_Int16 nEventId, const uno::Any& rNewValue, const uno::Any& rOldValue ) const
{
// -- object locked --
::osl::ClearableMutexGuard aGuard( maMutex );
AccessibleEventObject aEvent(mxFrontEnd, nEventId, rNewValue, rOldValue);
::cppu::OInterfaceIteratorHelper aIter( const_cast< SvxAccessibleTextHelper_Impl* >(this)->maStateListeners );
// no locking necessary, OInterfaceIteratorHelper copies listeners if someone removes/adds in between
// Further locking, actually, might lead to deadlocks, since we're calling out of this object
aGuard.clear();
// -- until here --
while( aIter.hasMoreElements() )
{
uno::Reference < XAccessibleEventListener > xListener( aIter.next(), uno::UNO_QUERY );
if( xListener.is() )
{
try
{
xListener->notifyEvent( aEvent );
}
catch( const uno::RuntimeException& )
{
#ifdef DBG_UTIL
DBG_ERROR("SvxAccessibleTextHelper_Impl::StateChangeEvent: Caught runtime exception from listener (bridge/listener dead?).");
#endif
}
}
}
}
// XAccessibleContext
sal_Int32 SAL_CALL SvxAccessibleTextHelper_Impl::getAccessibleChildCount() throw (uno::RuntimeException)
{
::vos::OGuard aGuard( Application::GetSolarMutex() );
return mnLastVisibleChild - mnFirstVisibleChild + 1;
}
uno::Reference< XAccessible > SAL_CALL SvxAccessibleTextHelper_Impl::getAccessibleChild( sal_Int32 i ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException)
{
::vos::OGuard aGuard( Application::GetSolarMutex() );
if( 0 > i || i > getAccessibleChildCount() ||
GetTextForwarder().GetParagraphCount() <= i )
{
throw lang::IndexOutOfBoundsException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("Invalid child index")), mxFrontEnd);
}
return maParaManager.GetChild( i, mxFrontEnd, GetEditSource(), mnFirstVisibleChild + i ).first;
}
void SAL_CALL SvxAccessibleTextHelper_Impl::addEventListener( const uno::Reference< XAccessibleEventListener >& xListener ) throw (uno::RuntimeException)
{
maStateListeners.addInterface( xListener );
}
void SAL_CALL SvxAccessibleTextHelper_Impl::removeEventListener( const uno::Reference< XAccessibleEventListener >& xListener ) throw (uno::RuntimeException)
{
maStateListeners.removeInterface( xListener );
}
uno::Reference< XAccessible > SAL_CALL SvxAccessibleTextHelper_Impl::getAccessibleAt( const awt::Point& _aPoint ) throw (uno::RuntimeException)
{
// make given position relative
if( !mxFrontEnd.is() )
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("SvxAccessibleTextHelper_Impl::getAccessibleAt: frontend invalid")), mxFrontEnd );
uno::Reference< XAccessibleContext > xFrontEndContext = mxFrontEnd->getAccessibleContext();
if( !xFrontEndContext.is() )
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("SvxAccessibleTextHelper_Impl::getAccessibleAt: frontend invalid")), mxFrontEnd );
uno::Reference< XAccessibleComponent > xFrontEndComponent( xFrontEndContext, uno::UNO_QUERY );
if( !xFrontEndComponent.is() )
throw uno::RuntimeException(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("SvxAccessibleTextHelper_Impl::getAccessibleAt: frontend is no XAccessibleComponent")),
mxFrontEnd );
Point aPoint( _aPoint.X, _aPoint.Y );
awt::Point aRefPoint = xFrontEndComponent->getLocationOnScreen();
aPoint -= Point( aRefPoint.X, aRefPoint.Y );
// respect EditEngine offset to surrounding shape/cell
aPoint -= GetOffset();
// convert to EditEngine coordinate system
SvxTextForwarder& rCacheTF = GetTextForwarder();
Point aLogPoint( GetViewForwarder().PixelToLogic( aPoint, rCacheTF.GetMapMode() ) );
// iterate over all visible children (including those not yet created)
sal_Int32 nChild;
for( nChild=mnFirstVisibleChild; nChild <= mnLastVisibleChild; ++nChild )
{
DBG_ASSERT(nChild >= 0 && nChild <= USHRT_MAX,
"SvxAccessibleTextHelper_Impl::getAccessibleAt: index value overflow");
Rectangle aParaBounds( rCacheTF.GetParaBounds( static_cast< USHORT > (nChild) ) );
if( aParaBounds.IsInside( aLogPoint ) )
{
DBG_ASSERT(nChild - mnFirstVisibleChild >= 0 && nChild - mnFirstVisibleChild <= USHRT_MAX,
"SvxAccessibleTextHelper_Impl::getAccessibleAt: index value overflow");
return getAccessibleChild( static_cast< USHORT > (nChild - mnFirstVisibleChild) );
}
}
// found none
return uno::Reference< XAccessible >();
}
//------------------------------------------------------------------------
//
// SvxAccessibleTextHelper implementation (simply forwards to impl)
//
//------------------------------------------------------------------------
SvxAccessibleTextHelper::SvxAccessibleTextHelper( const uno::Reference< XAccessible >& rInterface,
::std::auto_ptr< SvxEditSource > pEditSource ) :
mpImpl( new SvxAccessibleTextHelper_Impl( rInterface ) )
{
::vos::OGuard aGuard( Application::GetSolarMutex() );
SetEditSource( pEditSource );
}
SvxAccessibleTextHelper::~SvxAccessibleTextHelper()
{
}
SvxEditSource& SvxAccessibleTextHelper::GetEditSource() const throw (uno::RuntimeException)
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
SvxEditSource& aEditSource = mpImpl->GetEditSource();
mpImpl->CheckInvariants();
return aEditSource;
#else
return mpImpl->GetEditSource();
#endif
}
void SvxAccessibleTextHelper::SetEditSource( ::std::auto_ptr< SvxEditSource > pEditSource ) throw (uno::RuntimeException)
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
mpImpl->SetEditSource( pEditSource );
mpImpl->CheckInvariants();
#else
mpImpl->SetEditSource( pEditSource );
#endif
}
void SvxAccessibleTextHelper::StateChangeEvent( const sal_Int16 nEventId, const uno::Any& rNewValue, const uno::Any& rOldValue ) const
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
mpImpl->FireEvent( nEventId, rNewValue, rOldValue );
mpImpl->CheckInvariants();
#else
mpImpl->StateChangeEvent( nEventId, rNewValue, rOldValue );
#endif
}
void SvxAccessibleTextHelper::SetOffset( const Point& rPoint )
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
mpImpl->SetOffset( rPoint );
mpImpl->CheckInvariants();
#else
mpImpl->SetOffset( rPoint );
#endif
}
const Point& SvxAccessibleTextHelper::GetOffset() const
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
const Point& rRef = mpImpl->GetOffset();
mpImpl->CheckInvariants();
return rRef;
#else
return mpImpl->GetOffset();
#endif
}
void SvxAccessibleTextHelper::UpdateChildren() throw (::com::sun::star::uno::RuntimeException)
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
mpImpl->UpdateVisibleChildren();
mpImpl->CheckInvariants();
#else
mpImpl->UpdateVisibleChildren();
#endif
}
sal_Bool SvxAccessibleTextHelper::IsSelected() const
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
sal_Bool aRet = mpImpl->IsSelected();
mpImpl->CheckInvariants();
return aRet;
#else
return mpImpl->IsSelected();
#endif
}
// XAccessibleContext
sal_Int32 SvxAccessibleTextHelper::GetChildCount() throw (uno::RuntimeException)
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
sal_Int32 nRet = mpImpl->getAccessibleChildCount();
mpImpl->CheckInvariants();
return nRet;
#else
return mpImpl->getAccessibleChildCount();
#endif
}
uno::Reference< XAccessible > SvxAccessibleTextHelper::GetChild( sal_Int32 i ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException)
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
uno::Reference< XAccessible > xRet = mpImpl->getAccessibleChild( i );
mpImpl->CheckInvariants();
return xRet;
#else
return mpImpl->getAccessibleChild( i );
#endif
}
void SvxAccessibleTextHelper::AddEventListener( const uno::Reference< XAccessibleEventListener >& xListener ) throw (uno::RuntimeException)
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
mpImpl->addEventListener( xListener );
mpImpl->CheckInvariants();
#else
mpImpl->addEventListener( xListener );
#endif
}
void SvxAccessibleTextHelper::RemoveEventListener( const uno::Reference< XAccessibleEventListener >& xListener ) throw (uno::RuntimeException)
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
mpImpl->removeEventListener( xListener );
mpImpl->CheckInvariants();
#else
mpImpl->removeEventListener( xListener );
#endif
}
// XAccessibleComponent
uno::Reference< XAccessible > SvxAccessibleTextHelper::GetAt( const awt::Point& aPoint ) throw (uno::RuntimeException)
{
#ifdef DBG_UTIL
mpImpl->CheckInvariants();
uno::Reference< XAccessible > xChild = mpImpl->getAccessibleAt( aPoint );
mpImpl->CheckInvariants();
return xChild;
#else
return mpImpl->getAccessibleAt( aPoint );
#endif
}
//------------------------------------------------------------------------