/* -*- 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 .
*/
// AccTextBase.cpp: implementation of the CAccTextBase class.
#include "stdafx.h"
#include "AccTextBase.h"
#include <rtl/ustrbuf.hxx>
#include <sal/log.hxx>
#include <vcl/accessibility/AccessibleTextAttributeHelper.hxx>
#include <vcl/svapp.hxx>
#include <o3tl/char16_t2wchar_t.hxx>
#include <systools/win32/oleauto.hxx>
#include <com/sun/star/accessibility/AccessibleScrollType.hpp>
#include <com/sun/star/accessibility/AccessibleTextType.hpp>
#include <com/sun/star/accessibility/XAccessible.hpp>
#include <com/sun/star/accessibility/XAccessibleContext.hpp>
#include <com/sun/star/accessibility/XAccessibleComponent.hpp>
#include <com/sun/star/accessibility/XAccessibleTextSelection.hpp>
#include "MAccessible.h"
using namespace css::accessibility;
using namespace css::uno;
namespace
{
sal_Int16 lcl_matchIA2TextBoundaryType(IA2TextBoundaryType boundaryType)
{
switch (boundaryType)
{
case IA2_TEXT_BOUNDARY_CHAR:
return css::accessibility::AccessibleTextType::CHARACTER;
case IA2_TEXT_BOUNDARY_WORD:
return css::accessibility::AccessibleTextType::WORD;
case IA2_TEXT_BOUNDARY_SENTENCE:
return css::accessibility::AccessibleTextType::SENTENCE;
case IA2_TEXT_BOUNDARY_PARAGRAPH:
return css::accessibility::AccessibleTextType::PARAGRAPH;
case IA2_TEXT_BOUNDARY_LINE:
return css::accessibility::AccessibleTextType::LINE;
case IA2_TEXT_BOUNDARY_ALL:
// assert here, better handle it directly at call site
assert(false
&& "No match for IA2_TEXT_BOUNDARY_ALL, handle at call site." );
break ;
default :
break ;
}
SAL_WARN("iacc2" , "Unmatched text boundary type: " << boundaryType);
return -1 ;
}
}
// Construction/Destruction
CAccTextBase::CAccTextBase()
{}
CAccTextBase::~CAccTextBase()
{}
/**
* Get special selection .
* @ param startOffset Start selection offset .
* @ param endOffset End selection offset .
* @ param success Variant to accept the result of if the method call is successful .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_addSelection(long startOffset, long endOffset)
{
SolarMutexGuard g;
try {
if (pUNOInterface == nullptr)
return E_FAIL;
Reference<XAccessibleContext> pRContext = pUNOInterface->getAccessibleContext();
Reference< XAccessibleTextSelection > pRExtension(pRContext,UNO_QUERY);
if ( pRExtension.is() )
{
pRExtension->addSelection(0 , startOffset, endOffset);
return S_OK;
}
else
{
pRXText->setSelection(startOffset, endOffset);
return S_OK;
}
} catch (...) { return E_FAIL; }
}
/**
* Get special attributes .
* @ param offset Offset .
* @ param startOffset Variant to accept start offset .
* @ param endOffset Variant to accept end offset .
* @ param textAttributes Variant to accept attributes .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_attributes(long offset, long * startOffset, long * endOffset, BSTR * textAttributes)
{
SolarMutexGuard g;
try {
if (startOffset == nullptr || endOffset == nullptr || textAttributes == nullptr)
return E_INVALIDARG;
if (!pRXText.is())
{
return E_FAIL;
}
if (offset < 0 || offset > pRXText->getCharacterCount() )
return E_FAIL;
const OUString sAttrs = AccessibleTextAttributeHelper::GetIAccessible2TextAttributes(pRXText,
IA2AttributeType::TextAttributes,
offset, *startOffset, *endOffset);
if (*textAttributes)
SysFreeString(*textAttributes);
*textAttributes = sal::systools::BStr::newBSTR(sAttrs);
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Get caret position .
* @ param offset Variant to accept caret offset .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_caretOffset(long * offset)
{
SolarMutexGuard g;
try {
if (offset == nullptr)
return E_INVALIDARG;
if (!pRXText.is())
{
*offset = 0 ;
return S_OK;
}
*offset = pRXText->getCaretPosition();
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Get character count .
* @ param nCharacters Variant to accept character count .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_characterCount(long * nCharacters)
{
SolarMutexGuard g;
try {
if (nCharacters == nullptr)
return E_INVALIDARG;
if (!pRXText.is())
{
*nCharacters = 0 ;
return S_OK;
}
*nCharacters = pRXText->getCharacterCount();
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Get character extents .
* @ param offset Offset .
* @ param x Variant to accept x position .
* @ param y Variant to accept y position .
* @ param width Variant to accept width .
* @ param Height Variant to accept height .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_characterExtents(long offset, IA2CoordinateType coordType, long * x, long * y, long * width, long * height)
{
SolarMutexGuard g;
try {
if (x == nullptr || height == nullptr || y == nullptr || width == nullptr)
return E_INVALIDARG;
if (!pRXText.is())
return E_FAIL;
if (offset < 0 || offset > pRXText->getCharacterCount())
return E_FAIL;
css::awt::Rectangle rectangle;
rectangle = pRXText->getCharacterBounds(offset);
//IA2Point aPoint;
css::awt::Point aPoint;
Reference<XAccessibleContext> pRContext = pUNOInterface->getAccessibleContext();
if ( !pRContext.is() )
{
return E_FAIL;
}
Reference<XAccessibleComponent> pRComp(pRContext,UNO_QUERY);
if ( pRComp.is() )
{
if (coordType == IA2_COORDTYPE_SCREEN_RELATIVE)
{
css::awt::Point pt = pRComp->getLocationOnScreen();
aPoint.X = pt.X;
aPoint.Y = pt.Y;
}
else if (coordType == IA2_COORDTYPE_PARENT_RELATIVE)
{
css::awt::Point pt = pRComp->getLocation();
aPoint.X = pt.X;
aPoint.Y = pt.Y;
}
}
rectangle.X = rectangle.X + aPoint.X;
rectangle.Y = rectangle.Y + aPoint.Y;
*x = rectangle.X;
*y = rectangle.Y;
// pRXText->getCharacterBounds() have different implement in different acc component
// But we need return the width/height == 1 for every component when offset == text length.
// So we ignore the return result of pRXText->getCharacterBounds() when offset == text length.
if (offset == pRXText->getCharacterCount())
{
*width = 1 ;
*height = 1 ;
}
else
{
*width = rectangle.Width;
*height = rectangle.Height;
}
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Get selections count .
* @ param nSelections Variant to accept selections count .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_nSelections(long * nSelections)
{
SolarMutexGuard g;
try {
if (nSelections == nullptr)
return E_INVALIDARG;
if (pUNOInterface == nullptr)
{
*nSelections = 0 ;
return S_OK;
}
Reference<XAccessibleContext> pRContext = pUNOInterface->getAccessibleContext();
Reference< XAccessibleTextSelection > pRExtension(pRContext,UNO_QUERY);
if ( pRExtension.is() )
{
*nSelections = pRExtension->getSelectedPortionCount();
return S_OK;
}
long iLength = pRXText->getSelectedText().getLength();
if ( iLength> 0 )
{
*nSelections = 1 ;
return S_OK;
}
*nSelections = 0 ;
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Get offset of some special point .
* @ param x X position of one point .
* @ param x Y position of one point .
* @ param coordType Type .
* @ param offset Variant to accept offset .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_offsetAtPoint(long x, long y, IA2CoordinateType coordType, long * offset)
{
SolarMutexGuard g;
try {
if (offset == nullptr)
return E_INVALIDARG;
if (!pRXText.is())
return E_FAIL;
css::awt::Point point;
point.X = x;
point.Y = y;
if (coordType == IA2_COORDTYPE_SCREEN_RELATIVE)
{
// convert from screen to local coordinates
Reference<XAccessibleContext> xContext = pUNOInterface->getAccessibleContext();
Reference<XAccessibleComponent> xComponent(xContext, UNO_QUERY);
if (!xComponent.is())
return S_FALSE;
css::awt::Point aObjectPos = xComponent->getLocationOnScreen();
point.X -= aObjectPos.X;
point.Y -= aObjectPos.Y;
}
*offset = pRXText->getIndexAtPoint(point);
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Get selection range .
* @ param selection selection count .
* @ param startOffset Variant to accept the start offset of special selection .
* @ param endOffset Variant to accept the end offset of special selection .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_selection(long selectionIndex, long * startOffset, long * endOffset)
{
SolarMutexGuard g;
try {
if (startOffset == nullptr || endOffset == nullptr )
return E_INVALIDARG;
if (pUNOInterface == nullptr )
return E_FAIL;
long nSelection = 0 ;
get_nSelections(&nSelection);
if (selectionIndex >= nSelection || selectionIndex < 0 )
return E_FAIL;
Reference<XAccessibleContext> pRContext = pUNOInterface->getAccessibleContext();
Reference< XAccessibleTextSelection > pRExtension(pRContext,UNO_QUERY);
if ( pRExtension.is() )
{
*startOffset = pRExtension->getSeletedPositionStart(selectionIndex);
*endOffset = pRExtension->getSeletedPositionEnd(selectionIndex);
return S_OK;
}
else if (pRXText->getSelectionEnd() > -1 )
{
*startOffset = pRXText->getSelectionStart();
*endOffset = pRXText->getSelectionEnd();
return S_OK;
}
*startOffset = 0 ;
*endOffset = 0 ;
return E_FAIL;
} catch (...) { return E_FAIL; }
}
/**
* Get special text .
* @ param startOffset Start position of special range .
* @ param endOffset End position of special range .
* @ param text Variant to accept the text of special range .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_text(long startOffset, long endOffset, BSTR * text)
{
SolarMutexGuard g;
try {
if (text == nullptr)
return E_INVALIDARG;
if (!pRXText.is())
return E_FAIL;
if (endOffset == -1 )
endOffset = pRXText->getCharacterCount();
if (endOffset < 0 || endOffset < startOffset)
return E_FAIL;
const OUString ouStr = pRXText->getTextRange(startOffset, endOffset);
SysFreeString(*text);
*text = sal::systools::BStr::newBSTR(ouStr);
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Get special text before some position .
* @ param offset Special position .
* @ param boundaryType Boundary type .
* @ param startOffset Variant to accept the start offset .
* @ param endOffset Variant to accept the end offset .
* @ param text Variant to accept the special text .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_textBeforeOffset(long offset, IA2TextBoundaryType boundaryType, long * startOffset, long * endOffset, BSTR * text)
{
SolarMutexGuard g;
try {
if (startOffset == nullptr || endOffset == nullptr || text == nullptr)
return E_INVALIDARG;
if (!pRXText.is())
return E_FAIL;
if (boundaryType == IA2_TEXT_BOUNDARY_ALL)
{
long nChar;
get_nCharacters( &nChar );
*startOffset = 0 ;
*endOffset = nChar;
return get_text(0 , nChar, text);
}
const sal_Int16 nUnoBoundaryType = lcl_matchIA2TextBoundaryType(boundaryType);
if (nUnoBoundaryType < 0 )
return E_FAIL;
TextSegment segment = pRXText->getTextBeforeIndex(offset, nUnoBoundaryType);
SysFreeString(*text);
*text = sal::systools::BStr::newBSTR(segment.SegmentText);
*startOffset = segment.SegmentStart;
*endOffset = segment.SegmentEnd;
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Get special text after some position .
* @ param offset Special position .
* @ param boundaryType Boundary type .
* @ param startOffset Variant to accept the start offset .
* @ param endOffset Variant to accept the end offset .
* @ param text Variant to accept the special text .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_textAfterOffset(long offset, IA2TextBoundaryType boundaryType, long * startOffset, long * endOffset, BSTR * text)
{
SolarMutexGuard g;
try {
if (startOffset == nullptr || endOffset == nullptr || text == nullptr)
return E_INVALIDARG;
if (!pRXText.is())
return E_FAIL;
if (boundaryType == IA2_TEXT_BOUNDARY_ALL)
{
long nChar;
get_nCharacters( &nChar );
*startOffset = 0 ;
*endOffset = nChar;
return get_text(0 , nChar, text);
}
const sal_Int16 nUnoBoundaryType = lcl_matchIA2TextBoundaryType(boundaryType);
if (nUnoBoundaryType < 0 )
return E_FAIL;
TextSegment segment = pRXText->getTextBehindIndex(offset, nUnoBoundaryType);
SysFreeString(*text);
*text = sal::systools::BStr::newBSTR(segment.SegmentText);
*startOffset = segment.SegmentStart;
*endOffset = segment.SegmentEnd;
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Get special text at some position .
* @ param offset Special position .
* @ param boundaryType Boundary type .
* @ param startOffset Variant to accept the start offset .
* @ param endOffset Variant to accept the end offset .
* @ param text Variant to accept the special text .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_textAtOffset(long offset, IA2TextBoundaryType boundaryType, long * startOffset, long * endOffset, BSTR * text)
{
SolarMutexGuard g;
try {
if (startOffset == nullptr || text == nullptr ||endOffset == nullptr)
return E_INVALIDARG;
if (!pRXText.is())
return E_FAIL;
if (boundaryType == IA2_TEXT_BOUNDARY_ALL)
{
long nChar;
get_nCharacters( &nChar );
*startOffset = 0 ;
*endOffset = nChar;
return get_text(0 , nChar, text);
}
const sal_Int16 nUnoBoundaryType = lcl_matchIA2TextBoundaryType(boundaryType);
if (nUnoBoundaryType < 0 )
return E_FAIL;
TextSegment segment = pRXText->getTextAtIndex(offset, nUnoBoundaryType);
SysFreeString(*text);
*text = sal::systools::BStr::newBSTR(segment.SegmentText);
*startOffset = segment.SegmentStart;
*endOffset = segment.SegmentEnd;
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Remove selection .
* @ param selectionIndex Special selection index
* @ param success Variant to accept the method called result .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::removeSelection(long selectionIndex)
{
SolarMutexGuard g;
try {
if (pUNOInterface == nullptr)
{
return E_FAIL;
}
Reference<XAccessibleContext> pRContext = pUNOInterface->getAccessibleContext();
Reference< XAccessibleTextSelection > pRExtension(pRContext,UNO_QUERY);
if ( pRExtension.is() )
{
pRExtension->removeSelection(selectionIndex);
return S_OK;
}
else
{
pRXText->setSelection(0 , 0 );
return S_OK;
}
} catch (...) { return E_FAIL; }
}
/**
* Set caret position .
* @ param offset Special position .
* @ param success Variant to accept the method called result .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::setCaretOffset(long offset)
{
SolarMutexGuard g;
try {
if (!pRXText.is())
return E_FAIL;
pRXText->setCaretPosition(offset);
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Set special selection .
* @ param selectionIndex Special selection index .
* @ param startOffset start position .
* @ param endOffset end position .
* @ param success Variant to accept the method called result .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::setSelection(long , long startOffset, long endOffset)
{
SolarMutexGuard g;
try {
if (!pRXText.is())
{
return E_FAIL;
}
pRXText->setSelection(startOffset, endOffset);
return S_OK;
} catch (...) { return E_FAIL; }
}
/**
* Get characters count .
* @ param nCharacters Variant to accept the characters count .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_nCharacters(long * nCharacters)
{
SolarMutexGuard g;
try {
if (nCharacters == nullptr)
return E_INVALIDARG;
if (!pRXText.is())
{
*nCharacters = 0 ;
return S_OK;
}
*nCharacters = pRXText->getCharacterCount();
return S_OK;
} catch (...) { return E_FAIL; }
}
// added by qiuhd, 2006/07/03, for direver 07/11
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_newText( IA2TextSegment *)
{
return E_NOTIMPL;
}
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::get_oldText( IA2TextSegment *)
{
return E_NOTIMPL;
}
/**
* Scroll to special sub - string .
* @ param startIndex Start index of sub string .
* @ param endIndex End index of sub string .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::scrollSubstringToPoint(long , long , IA2CoordinateType, long , long )
{
return E_NOTIMPL;
}
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::scrollSubstringTo(long startIndex, long endIndex, IA2ScrollType type)
{
SolarMutexGuard g;
try {
if (!pRXText.is())
return E_FAIL;
AccessibleScrollType lUnoType;
switch (type)
{
case IA2_SCROLL_TYPE_TOP_LEFT:
lUnoType = AccessibleScrollType_SCROLL_TOP_LEFT;
break ;
case IA2_SCROLL_TYPE_BOTTOM_RIGHT:
lUnoType = AccessibleScrollType_SCROLL_BOTTOM_RIGHT;
break ;
case IA2_SCROLL_TYPE_TOP_EDGE:
lUnoType = AccessibleScrollType_SCROLL_TOP_EDGE;
break ;
case IA2_SCROLL_TYPE_BOTTOM_EDGE:
lUnoType = AccessibleScrollType_SCROLL_BOTTOM_EDGE;
break ;
case IA2_SCROLL_TYPE_LEFT_EDGE:
lUnoType = AccessibleScrollType_SCROLL_LEFT_EDGE;
break ;
case IA2_SCROLL_TYPE_RIGHT_EDGE:
lUnoType = AccessibleScrollType_SCROLL_RIGHT_EDGE;
break ;
case IA2_SCROLL_TYPE_ANYWHERE:
lUnoType = AccessibleScrollType_SCROLL_ANYWHERE;
break ;
default :
return E_NOTIMPL;
}
if (pRXText->scrollSubstringTo(startIndex, endIndex, lUnoType))
return S_OK;
return E_NOTIMPL;
} catch (...) { return E_FAIL; }
}
/**
* Put UNO interface .
* @ param pXInterface UNO interface .
* @ return Result .
*/
COM_DECLSPEC_NOTHROW STDMETHODIMP CAccTextBase::put_XInterface(hyper pXInterface)
{
// internal IUNOXWrapper - no mutex meeded
try {
CUNOXWrapper::put_XInterface(pXInterface);
if (pUNOInterface == nullptr)
return E_FAIL;
Reference<XAccessibleContext> pRContext = pUNOInterface->getAccessibleContext();
if ( !pRContext.is() )
{
return E_FAIL;
}
Reference<XAccessibleText> pRXI(pRContext,UNO_QUERY);
pRXText = pRXI;
return S_OK;
} catch (...) { return E_FAIL; }
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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