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Diffstat (limited to 'editeng/source/accessibility/AccessibleStaticTextBase.cxx')
| -rw-r--r-- | editeng/source/accessibility/AccessibleStaticTextBase.cxx | 967 |
1 files changed, 967 insertions, 0 deletions
diff --git a/editeng/source/accessibility/AccessibleStaticTextBase.cxx b/editeng/source/accessibility/AccessibleStaticTextBase.cxx new file mode 100644 index 000000000..1dcf37b8d --- /dev/null +++ b/editeng/source/accessibility/AccessibleStaticTextBase.cxx @@ -0,0 +1,967 @@ +/* -*- 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 . + */ + + +// Global header + + +#include <utility> +#include <memory> +#include <vector> +#include <algorithm> +#include <rtl/ustrbuf.hxx> +#include <tools/debug.hxx> +#include <vcl/window.hxx> +#include <vcl/svapp.hxx> +#include <comphelper/sequence.hxx> +#include <com/sun/star/lang/IndexOutOfBoundsException.hpp> +#include <com/sun/star/uno/Reference.hxx> +#include <com/sun/star/awt/Point.hpp> +#include <com/sun/star/awt/Rectangle.hpp> +#include <com/sun/star/accessibility/AccessibleTextType.hpp> + + +// Project-local header + + +#include <editeng/editdata.hxx> +#include <editeng/unoedprx.hxx> +#include <editeng/AccessibleStaticTextBase.hxx> +#include <editeng/AccessibleEditableTextPara.hxx> + + +using namespace ::com::sun::star; +using namespace ::com::sun::star::accessibility; + +/* TODO: + ===== + + - separate adapter functionality from AccessibleStaticText class + + - refactor common loops into templates, using mem_fun + + */ + +namespace accessibility +{ + typedef std::vector< beans::PropertyValue > PropertyValueVector; + + namespace { + + class PropertyValueEqualFunctor + { + const beans::PropertyValue& m_rPValue; + + public: + explicit PropertyValueEqualFunctor(const beans::PropertyValue& rPValue) + : m_rPValue(rPValue) + {} + bool operator() ( const beans::PropertyValue& rhs ) const + { + return ( m_rPValue.Name == rhs.Name && m_rPValue.Value == rhs.Value ); + } + }; + + } + + sal_Unicode const cNewLine(0x0a); + + + // Static Helper + + + static ESelection MakeSelection( sal_Int32 nStartPara, sal_Int32 nStartIndex, + sal_Int32 nEndPara, sal_Int32 nEndIndex ) + { + DBG_ASSERT(nStartPara >= 0 && + nStartIndex >= 0 && + nEndPara >= 0 && + nEndIndex >= 0, + "AccessibleStaticTextBase_Impl::MakeSelection: index value overflow"); + + return ESelection(nStartPara, nStartIndex, nEndPara, nEndIndex); + } + + + // AccessibleStaticTextBase_Impl declaration + + + /** AccessibleStaticTextBase_Impl + + This class implements the AccessibleStaticTextBase + functionality, mainly by forwarding the calls to an aggregated + AccessibleEditableTextPara. As this is a therefore non-trivial + adapter, factoring out the common functionality from + AccessibleEditableTextPara might be a profitable future task. + */ + class AccessibleStaticTextBase_Impl + { + friend class AccessibleStaticTextBase; + public: + + // receive pointer to our frontend class and view window + AccessibleStaticTextBase_Impl(); + + void SetEditSource( std::unique_ptr< SvxEditSource > && pEditSource ); + + void SetEventSource( const uno::Reference< XAccessible >& rInterface ) + { + + mxThis = rInterface; + } + + void SetOffset( const Point& ); + + void Dispose(); + + AccessibleEditableTextPara& GetParagraph( sal_Int32 nPara ) const; + sal_Int32 GetParagraphCount() const; + + EPosition Index2Internal( sal_Int32 nFlatIndex ) const + { + + return ImpCalcInternal( nFlatIndex, false ); + } + + EPosition Range2Internal( sal_Int32 nFlatIndex ) const + { + + return ImpCalcInternal( nFlatIndex, true ); + } + + sal_Int32 Internal2Index( EPosition nEEIndex ) const; + + void CorrectTextSegment( TextSegment& aTextSegment, + int nPara ) const; + + bool SetSelection( sal_Int32 nStartPara, sal_Int32 nStartIndex, + sal_Int32 nEndPara, sal_Int32 nEndIndex ); + bool CopyText( sal_Int32 nStartPara, sal_Int32 nStartIndex, + sal_Int32 nEndPara, sal_Int32 nEndIndex ); + + tools::Rectangle GetParagraphBoundingBox() const; + bool RemoveLineBreakCount( sal_Int32& rIndex ); + + private: + + EPosition ImpCalcInternal( sal_Int32 nFlatIndex, bool bExclusive ) const; + + // our frontend class (the one implementing the actual + // interface). That's not necessarily the one containing the impl + // pointer + uno::Reference< XAccessible > mxThis; + + // implements our functionality, we're just an adapter (guarded by solar mutex) + mutable rtl::Reference<AccessibleEditableTextPara> mxTextParagraph; + + // a wrapper for the text forwarders (guarded by solar mutex) + mutable SvxEditSourceAdapter maEditSource; + }; + + + // AccessibleStaticTextBase_Impl implementation + + + AccessibleStaticTextBase_Impl::AccessibleStaticTextBase_Impl() : + mxTextParagraph( new AccessibleEditableTextPara(nullptr) ), + maEditSource() + { + + // TODO: this is still somewhat of a hack, all the more since + // now the maTextParagraph has an empty parent reference set + } + + void AccessibleStaticTextBase_Impl::SetEditSource( std::unique_ptr< SvxEditSource > && pEditSource ) + { + + maEditSource.SetEditSource( std::move(pEditSource) ); + if( mxTextParagraph.is() ) + mxTextParagraph->SetEditSource( &maEditSource ); + } + + void AccessibleStaticTextBase_Impl::SetOffset( const Point& rPoint ) + { + if( mxTextParagraph.is() ) + mxTextParagraph->SetEEOffset( rPoint ); + } + + void AccessibleStaticTextBase_Impl::Dispose() + { + + // we're the owner of the paragraph, so destroy it, too + if( mxTextParagraph.is() ) + mxTextParagraph->Dispose(); + + // drop references + mxThis = nullptr; + mxTextParagraph.clear(); + } + + AccessibleEditableTextPara& AccessibleStaticTextBase_Impl::GetParagraph( sal_Int32 nPara ) const + { + + if( !mxTextParagraph.is() ) + throw lang::DisposedException ("object has been already disposed", mxThis ); + + // TODO: Have a different method on AccessibleEditableTextPara + // that does not care about state changes + mxTextParagraph->SetParagraphIndex( nPara ); + + return *mxTextParagraph; + } + + sal_Int32 AccessibleStaticTextBase_Impl::GetParagraphCount() const + { + + if( !mxTextParagraph.is() ) + return 0; + else + return mxTextParagraph->GetTextForwarder().GetParagraphCount(); + } + + sal_Int32 AccessibleStaticTextBase_Impl::Internal2Index( EPosition nEEIndex ) const + { + // XXX checks for overflow and returns maximum if so + sal_Int32 aRes(0); + for(sal_Int32 i=0; i<nEEIndex.nPara; ++i) + { + sal_Int32 nCount = GetParagraph(i).getCharacterCount(); + if (SAL_MAX_INT32 - aRes > nCount) + return SAL_MAX_INT32; + aRes += nCount; + } + + if (SAL_MAX_INT32 - aRes > nEEIndex.nIndex) + return SAL_MAX_INT32; + return aRes + nEEIndex.nIndex; + } + + void AccessibleStaticTextBase_Impl::CorrectTextSegment( TextSegment& aTextSegment, + int nPara ) const + { + // Keep 'invalid' values at the TextSegment + if( aTextSegment.SegmentStart != -1 && + aTextSegment.SegmentEnd != -1 ) + { + // #112814# Correct TextSegment by paragraph offset + sal_Int32 nOffset(0); + int i; + for(i=0; i<nPara; ++i) + nOffset += GetParagraph(i).getCharacterCount(); + + aTextSegment.SegmentStart += nOffset; + aTextSegment.SegmentEnd += nOffset; + } + } + + EPosition AccessibleStaticTextBase_Impl::ImpCalcInternal( sal_Int32 nFlatIndex, bool bExclusive ) const + { + + if( nFlatIndex < 0 ) + throw lang::IndexOutOfBoundsException("AccessibleStaticTextBase_Impl::Index2Internal: character index out of bounds", + mxThis); + // gratuitously accepting larger indices here, AccessibleEditableTextPara will throw eventually + + sal_Int32 nCurrPara, nCurrIndex, nParas, nCurrCount; + for( nCurrPara=0, nParas=GetParagraphCount(), nCurrCount=0, nCurrIndex=0; nCurrPara<nParas; ++nCurrPara ) + { + nCurrCount = GetParagraph( nCurrPara ).getCharacterCount(); + nCurrIndex += nCurrCount; + if( nCurrIndex >= nFlatIndex ) + { + // check overflow + DBG_ASSERT(nCurrPara >= 0 && + nFlatIndex - nCurrIndex + nCurrCount >= 0, + "AccessibleStaticTextBase_Impl::Index2Internal: index value overflow"); + + return EPosition(nCurrPara, nFlatIndex - nCurrIndex + nCurrCount); + } + } + + // #102170# Allow one-past the end for ranges + if( bExclusive && nCurrIndex == nFlatIndex ) + { + // check overflow + DBG_ASSERT(nCurrPara > 0 && + nFlatIndex - nCurrIndex + nCurrCount >= 0, + "AccessibleStaticTextBase_Impl::Index2Internal: index value overflow"); + + return EPosition(nCurrPara-1, nFlatIndex - nCurrIndex + nCurrCount); + } + + // not found? Out of bounds + throw lang::IndexOutOfBoundsException("AccessibleStaticTextBase_Impl::Index2Internal: character index out of bounds", + mxThis); + } + + bool AccessibleStaticTextBase_Impl::SetSelection( sal_Int32 nStartPara, sal_Int32 nStartIndex, + sal_Int32 nEndPara, sal_Int32 nEndIndex ) + { + + if( !mxTextParagraph.is() ) + return false; + + try + { + SvxEditViewForwarder& rCacheVF = mxTextParagraph->GetEditViewForwarder( true ); + return rCacheVF.SetSelection( MakeSelection(nStartPara, nStartIndex, nEndPara, nEndIndex) ); + } + catch( const uno::RuntimeException& ) + { + return false; + } + } + + bool AccessibleStaticTextBase_Impl::CopyText( sal_Int32 nStartPara, sal_Int32 nStartIndex, + sal_Int32 nEndPara, sal_Int32 nEndIndex ) + { + + if( !mxTextParagraph.is() ) + return false; + + try + { + SvxEditViewForwarder& rCacheVF = mxTextParagraph->GetEditViewForwarder( true ); + mxTextParagraph->GetTextForwarder(); // MUST be after GetEditViewForwarder(), see method docs + bool aRetVal; + + // save current selection + ESelection aOldSelection; + + rCacheVF.GetSelection( aOldSelection ); + rCacheVF.SetSelection( MakeSelection(nStartPara, nStartIndex, nEndPara, nEndIndex) ); + aRetVal = rCacheVF.Copy(); + rCacheVF.SetSelection( aOldSelection ); // restore + + return aRetVal; + } + catch( const uno::RuntimeException& ) + { + return false; + } + } + + tools::Rectangle AccessibleStaticTextBase_Impl::GetParagraphBoundingBox() const + { + tools::Rectangle aRect; + if( mxTextParagraph.is() ) + { + awt::Rectangle aAwtRect = mxTextParagraph->getBounds(); + aRect = tools::Rectangle( Point( aAwtRect.X, aAwtRect.Y ), Size( aAwtRect.Width, aAwtRect.Height ) ); + } + else + { + aRect.SetEmpty(); + } + return aRect; + } + //the input argument is the index(including "\n" ) in the string. + //the function will calculate the actual index(not including "\n") in the string. + //and return true if the index is just at a "\n" + bool AccessibleStaticTextBase_Impl::RemoveLineBreakCount( sal_Int32& rIndex ) + { + // get the total char number inside the cell. + sal_Int32 i, nCount, nParas; + for( i=0, nCount=0, nParas=GetParagraphCount(); i<nParas; ++i ) + nCount += GetParagraph(i).getCharacterCount(); + nCount = nCount + (nParas-1); + if( nCount == 0 && rIndex == 0) return false; + + + sal_Int32 nCurrPara, nCurrCount; + sal_Int32 nLineBreakPos = 0, nLineBreakCount = 0; + sal_Int32 nParaCount = GetParagraphCount(); + for ( nCurrCount = 0, nCurrPara = 0; nCurrPara < nParaCount; nCurrPara++ ) + { + nCurrCount += GetParagraph( nCurrPara ).getCharacterCount(); + nLineBreakPos = nCurrCount++; + if ( rIndex == nLineBreakPos ) + { + rIndex -= (++nLineBreakCount);//(++nLineBreakCount); + if ( rIndex < 0) + { + rIndex = 0; + } + //if the index is at the last position of the last paragraph + //there is no "\n" , so we should increase rIndex by 1 and return false. + if ( (nCurrPara+1) == nParaCount ) + { + rIndex++; + return false; + } + else + { + return true; + } + } + else if ( rIndex < nLineBreakPos ) + { + rIndex -= nLineBreakCount; + return false; + } + else + { + nLineBreakCount++; + } + } + return false; + } + + + // AccessibleStaticTextBase implementation + + AccessibleStaticTextBase::AccessibleStaticTextBase( std::unique_ptr< SvxEditSource > && pEditSource ) : + mpImpl( new AccessibleStaticTextBase_Impl() ) + { + SolarMutexGuard aGuard; + + SetEditSource( std::move(pEditSource) ); + } + + AccessibleStaticTextBase::~AccessibleStaticTextBase() + { + } + + void AccessibleStaticTextBase::SetEditSource( std::unique_ptr< SvxEditSource > && pEditSource ) + { + // precondition: solar mutex locked + DBG_TESTSOLARMUTEX(); + + mpImpl->SetEditSource( std::move(pEditSource) ); + } + + void AccessibleStaticTextBase::SetEventSource( const uno::Reference< XAccessible >& rInterface ) + { + mpImpl->SetEventSource( rInterface ); + + } + + void AccessibleStaticTextBase::SetOffset( const Point& rPoint ) + { + // precondition: solar mutex locked + DBG_TESTSOLARMUTEX(); + + mpImpl->SetOffset( rPoint ); + } + + void AccessibleStaticTextBase::Dispose() + { + mpImpl->Dispose(); + + } + + // XAccessibleContext + sal_Int32 AccessibleStaticTextBase::getAccessibleChildCount() + { + // no children at all + return 0; + } + + uno::Reference< XAccessible > AccessibleStaticTextBase::getAccessibleChild( sal_Int32 /*i*/ ) + { + // no children at all + return uno::Reference< XAccessible >(); + } + + uno::Reference< XAccessible > AccessibleStaticTextBase::getAccessibleAtPoint( const awt::Point& /*_aPoint*/ ) + { + // no children at all + return uno::Reference< XAccessible >(); + } + + // XAccessibleText + sal_Int32 SAL_CALL AccessibleStaticTextBase::getCaretPosition() + { + SolarMutexGuard aGuard; + + sal_Int32 i, nPos, nParas; + for( i=0, nPos=-1, nParas=mpImpl->GetParagraphCount(); i<nParas; ++i ) + { + if( (nPos=mpImpl->GetParagraph(i).getCaretPosition()) != -1 ) + return nPos; + } + + return nPos; + } + + sal_Bool SAL_CALL AccessibleStaticTextBase::setCaretPosition( sal_Int32 nIndex ) + { + return setSelection(nIndex, nIndex); + } + + sal_Unicode SAL_CALL AccessibleStaticTextBase::getCharacter( sal_Int32 nIndex ) + { + SolarMutexGuard aGuard; + + EPosition aPos( mpImpl->Index2Internal(nIndex) ); + + return mpImpl->GetParagraph( aPos.nPara ).getCharacter( aPos.nIndex ); + } + + uno::Sequence< beans::PropertyValue > SAL_CALL AccessibleStaticTextBase::getCharacterAttributes( sal_Int32 nIndex, const css::uno::Sequence< OUString >& aRequestedAttributes ) + { + SolarMutexGuard aGuard; + + //get the actual index without "\n" + mpImpl->RemoveLineBreakCount( nIndex ); + + EPosition aPos( mpImpl->Index2Internal(nIndex) ); + + return mpImpl->GetParagraph( aPos.nPara ).getCharacterAttributes( aPos.nIndex, aRequestedAttributes ); + } + + awt::Rectangle SAL_CALL AccessibleStaticTextBase::getCharacterBounds( sal_Int32 nIndex ) + { + SolarMutexGuard aGuard; + + // #108900# Allow ranges for nIndex, as one-past-the-end + // values are now legal, too. + EPosition aPos( mpImpl->Range2Internal(nIndex) ); + + // #i70916# Text in spread sheet cells return the wrong extents + AccessibleEditableTextPara& rPara = mpImpl->GetParagraph( aPos.nPara ); + awt::Rectangle aParaBounds( rPara.getBounds() ); + awt::Rectangle aBounds( rPara.getCharacterBounds( aPos.nIndex ) ); + aBounds.X += aParaBounds.X; + aBounds.Y += aParaBounds.Y; + + return aBounds; + } + + sal_Int32 SAL_CALL AccessibleStaticTextBase::getCharacterCount() + { + SolarMutexGuard aGuard; + + sal_Int32 i, nCount, nParas; + for( i=0, nCount=0, nParas=mpImpl->GetParagraphCount(); i<nParas; ++i ) + nCount += mpImpl->GetParagraph(i).getCharacterCount(); + //count on the number of "\n" which equals number of paragraphs decrease 1. + nCount = nCount + (nParas-1); + return nCount; + } + + sal_Int32 SAL_CALL AccessibleStaticTextBase::getIndexAtPoint( const awt::Point& rPoint ) + { + SolarMutexGuard aGuard; + + const sal_Int32 nParas( mpImpl->GetParagraphCount() ); + sal_Int32 nIndex; + int i; + for( i=0; i<nParas; ++i ) + { + // TODO: maybe exploit the fact that paragraphs are + // ordered vertically for early exit + + // #i70916# Text in spread sheet cells return the wrong extents + AccessibleEditableTextPara& rPara = mpImpl->GetParagraph( i ); + awt::Rectangle aParaBounds( rPara.getBounds() ); + awt::Point aPoint( rPoint ); + aPoint.X -= aParaBounds.X; + aPoint.Y -= aParaBounds.Y; + + // #112814# Use correct index offset + if ( ( nIndex = rPara.getIndexAtPoint( aPoint ) ) != -1 ) + return mpImpl->Internal2Index(EPosition(i, nIndex)); + } + + return -1; + } + + OUString SAL_CALL AccessibleStaticTextBase::getSelectedText() + { + SolarMutexGuard aGuard; + + sal_Int32 nStart( getSelectionStart() ); + sal_Int32 nEnd( getSelectionEnd() ); + + // #104481# Return the empty string for 'no selection' + if( nStart < 0 || nEnd < 0 ) + return OUString(); + + return getTextRange( nStart, nEnd ); + } + + sal_Int32 SAL_CALL AccessibleStaticTextBase::getSelectionStart() + { + SolarMutexGuard aGuard; + + sal_Int32 i, nPos, nParas; + for( i=0, nPos=-1, nParas=mpImpl->GetParagraphCount(); i<nParas; ++i ) + { + if( (nPos=mpImpl->GetParagraph(i).getSelectionStart()) != -1 ) + return nPos; + } + + return nPos; + } + + sal_Int32 SAL_CALL AccessibleStaticTextBase::getSelectionEnd() + { + SolarMutexGuard aGuard; + + sal_Int32 i, nPos, nParas; + for( i=0, nPos=-1, nParas=mpImpl->GetParagraphCount(); i<nParas; ++i ) + { + if( (nPos=mpImpl->GetParagraph(i).getSelectionEnd()) != -1 ) + return nPos; + } + + return nPos; + } + + sal_Bool SAL_CALL AccessibleStaticTextBase::setSelection( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) + { + SolarMutexGuard aGuard; + + EPosition aStartIndex( mpImpl->Range2Internal(nStartIndex) ); + EPosition aEndIndex( mpImpl->Range2Internal(nEndIndex) ); + + return mpImpl->SetSelection( aStartIndex.nPara, aStartIndex.nIndex, + aEndIndex.nPara, aEndIndex.nIndex ); + } + + OUString SAL_CALL AccessibleStaticTextBase::getText() + { + SolarMutexGuard aGuard; + + sal_Int32 i, nParas; + OUStringBuffer aRes; + for( i=0, nParas=mpImpl->GetParagraphCount(); i<nParas; ++i ) + aRes.append(mpImpl->GetParagraph(i).getText()); + + return aRes.makeStringAndClear(); + } + + OUString SAL_CALL AccessibleStaticTextBase::getTextRange( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) + { + SolarMutexGuard aGuard; + + if( nStartIndex > nEndIndex ) + std::swap(nStartIndex, nEndIndex); + //if startindex equals endindex we will get nothing. So return an empty string directly. + if ( nStartIndex == nEndIndex ) + { + return OUString(); + } + bool bStart = mpImpl->RemoveLineBreakCount( nStartIndex ); + //if the start index is just at a "\n", we need to begin from the next char + if ( bStart ) + { + nStartIndex++; + } + //we need to find out whether the previous position of the current endindex is at "\n" or not + //if yes we need to mark it and add "\n" at the end of the result + sal_Int32 nTemp = nEndIndex - 1; + bool bEnd = mpImpl->RemoveLineBreakCount( nTemp ); + bool bTemp = mpImpl->RemoveLineBreakCount( nEndIndex ); + //if the below condition is true it indicates an empty paragraph with just a "\n" + //so we need to set one "\n" flag to avoid duplication. + if ( bStart && bEnd && ( nStartIndex == nEndIndex) ) + { + bEnd = false; + } + //if the current endindex is at a "\n", we need to increase endindex by 1 to make sure + //the char before "\n" is included. Because string returned by this function will not include + //the char at the endindex. + if ( bTemp ) + { + nEndIndex++; + } + OUStringBuffer aRes; + EPosition aStartIndex( mpImpl->Range2Internal(nStartIndex) ); + EPosition aEndIndex( mpImpl->Range2Internal(nEndIndex) ); + + // #102170# Special case: start and end paragraph are identical + if( aStartIndex.nPara == aEndIndex.nPara ) + { + //we don't return the string directly now for that we have to do some further process for "\n" + aRes = mpImpl->GetParagraph( aStartIndex.nPara ).getTextRange( aStartIndex.nIndex, aEndIndex.nIndex ); + } + else + { + sal_Int32 i( aStartIndex.nPara ); + aRes = mpImpl->GetParagraph(i).getTextRange( aStartIndex.nIndex, + mpImpl->GetParagraph(i).getCharacterCount()/*-1*/); + ++i; + + // paragraphs inbetween are fully included + for( ; i<aEndIndex.nPara; ++i ) + { + aRes.append(cNewLine); + aRes.append(mpImpl->GetParagraph(i).getText()); + } + + if( i<=aEndIndex.nPara ) + { + //if the below condition is matched it means that endindex is at mid of the last paragraph + //we need to add a "\n" before we add the last part of the string. + if ( !bEnd && aEndIndex.nIndex ) + { + aRes.append(cNewLine); + } + aRes.append(mpImpl->GetParagraph(i).getTextRange( 0, aEndIndex.nIndex )); + } + } + //According to the flag we marked before, we have to add "\n" at the beginning + //or at the end of the result string. + if ( bStart ) + { + aRes.insert(0, OUStringChar(cNewLine)); + } + if ( bEnd ) + { + aRes.append(OUStringChar(cNewLine)); + } + return aRes.makeStringAndClear(); + } + + css::accessibility::TextSegment SAL_CALL AccessibleStaticTextBase::getTextAtIndex( sal_Int32 nIndex, sal_Int16 aTextType ) + { + SolarMutexGuard aGuard; + + bool bLineBreak = mpImpl->RemoveLineBreakCount( nIndex ); + EPosition aPos( mpImpl->Range2Internal(nIndex) ); + + css::accessibility::TextSegment aResult; + + if( AccessibleTextType::PARAGRAPH == aTextType ) + { + // #106393# Special casing one behind last paragraph is + // not necessary, since then, we return the content and + // boundary of that last paragraph. Range2Internal is + // tolerant against that, and returns the last paragraph + // in aPos.nPara. + + // retrieve full text of the paragraph + aResult.SegmentText = mpImpl->GetParagraph( aPos.nPara ).getText(); + + // #112814# Adapt the start index with the paragraph offset + aResult.SegmentStart = mpImpl->Internal2Index( EPosition( aPos.nPara, 0 ) ); + aResult.SegmentEnd = aResult.SegmentStart + aResult.SegmentText.getLength(); + } + else if ( AccessibleTextType::ATTRIBUTE_RUN == aTextType ) + { + SvxAccessibleTextAdapter& rTextForwarder = mpImpl->GetParagraph( aPos.nIndex ).GetTextForwarder(); + sal_Int32 nStartIndex, nEndIndex; + if ( rTextForwarder.GetAttributeRun( nStartIndex, nEndIndex, aPos.nPara, aPos.nIndex, true ) ) + { + aResult.SegmentText = getTextRange( nStartIndex, nEndIndex ); + aResult.SegmentStart = nStartIndex; + aResult.SegmentEnd = nEndIndex; + } + } + else + { + // No special handling required, forward to wrapped class + aResult = mpImpl->GetParagraph( aPos.nPara ).getTextAtIndex( aPos.nIndex, aTextType ); + + // #112814# Adapt the start index with the paragraph offset + mpImpl->CorrectTextSegment( aResult, aPos.nPara ); + if ( bLineBreak ) + { + aResult.SegmentText = OUString(cNewLine); + } + } + + return aResult; + } + + css::accessibility::TextSegment SAL_CALL AccessibleStaticTextBase::getTextBeforeIndex( sal_Int32 nIndex, sal_Int16 aTextType ) + { + SolarMutexGuard aGuard; + + sal_Int32 nOldIdx = nIndex; + bool bLineBreak = mpImpl->RemoveLineBreakCount( nIndex ); + EPosition aPos( mpImpl->Range2Internal(nIndex) ); + + css::accessibility::TextSegment aResult; + + if( AccessibleTextType::PARAGRAPH == aTextType ) + { + if( aPos.nIndex == mpImpl->GetParagraph( aPos.nPara ).getCharacterCount() ) + { + // #103589# Special casing one behind the last paragraph + aResult.SegmentText = mpImpl->GetParagraph( aPos.nPara ).getText(); + + // #112814# Adapt the start index with the paragraph offset + aResult.SegmentStart = mpImpl->Internal2Index( EPosition( aPos.nPara, 0 ) ); + } + else if( aPos.nPara > 0 ) + { + aResult.SegmentText = mpImpl->GetParagraph( aPos.nPara - 1 ).getText(); + + // #112814# Adapt the start index with the paragraph offset + aResult.SegmentStart = mpImpl->Internal2Index( EPosition( aPos.nPara - 1, 0 ) ); + } + + aResult.SegmentEnd = aResult.SegmentStart + aResult.SegmentText.getLength(); + } + else + { + // No special handling required, forward to wrapped class + aResult = mpImpl->GetParagraph( aPos.nPara ).getTextBeforeIndex( aPos.nIndex, aTextType ); + + // #112814# Adapt the start index with the paragraph offset + mpImpl->CorrectTextSegment( aResult, aPos.nPara ); + if ( bLineBreak && (nOldIdx-1) >= 0) + { + aResult = getTextAtIndex( nOldIdx-1, aTextType ); + } + } + + return aResult; + } + + css::accessibility::TextSegment SAL_CALL AccessibleStaticTextBase::getTextBehindIndex( sal_Int32 nIndex, sal_Int16 aTextType ) + { + SolarMutexGuard aGuard; + + sal_Int32 nTemp = nIndex+1; + bool bLineBreak = mpImpl->RemoveLineBreakCount( nTemp ); + mpImpl->RemoveLineBreakCount( nIndex ); + EPosition aPos( mpImpl->Range2Internal(nIndex) ); + + css::accessibility::TextSegment aResult; + + if( AccessibleTextType::PARAGRAPH == aTextType ) + { + // Special casing one behind the last paragraph is not + // necessary, this case is invalid here for + // getTextBehindIndex + if( aPos.nPara + 1 < mpImpl->GetParagraphCount() ) + { + aResult.SegmentText = mpImpl->GetParagraph( aPos.nPara + 1 ).getText(); + + // #112814# Adapt the start index with the paragraph offset + aResult.SegmentStart = mpImpl->Internal2Index( EPosition( aPos.nPara + 1, 0 ) ); + aResult.SegmentEnd = aResult.SegmentStart + aResult.SegmentText.getLength(); + } + } + else + { + // No special handling required, forward to wrapped class + aResult = mpImpl->GetParagraph( aPos.nPara ).getTextBehindIndex( aPos.nIndex, aTextType ); + + // #112814# Adapt the start index with the paragraph offset + mpImpl->CorrectTextSegment( aResult, aPos.nPara ); + if ( bLineBreak ) + { + aResult.SegmentText = OUStringChar(cNewLine) + aResult.SegmentText; + } + } + + return aResult; + } + + sal_Bool SAL_CALL AccessibleStaticTextBase::copyText( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) + { + SolarMutexGuard aGuard; + + if( nStartIndex > nEndIndex ) + std::swap(nStartIndex, nEndIndex); + + EPosition aStartIndex( mpImpl->Range2Internal(nStartIndex) ); + EPosition aEndIndex( mpImpl->Range2Internal(nEndIndex) ); + + return mpImpl->CopyText( aStartIndex.nPara, aStartIndex.nIndex, + aEndIndex.nPara, aEndIndex.nIndex ); + } + + sal_Bool SAL_CALL AccessibleStaticTextBase::scrollSubstringTo( sal_Int32, sal_Int32, AccessibleScrollType ) + { + return false; + } + + // XAccessibleTextAttributes + uno::Sequence< beans::PropertyValue > AccessibleStaticTextBase::getDefaultAttributes( const uno::Sequence< OUString >& RequestedAttributes ) + { + // get the intersection of the default attributes of all paragraphs + + SolarMutexGuard aGuard; + + PropertyValueVector aDefAttrVec( + comphelper::sequenceToContainer<PropertyValueVector>(mpImpl->GetParagraph( 0 ).getDefaultAttributes( RequestedAttributes )) ); + + const sal_Int32 nParaCount = mpImpl->GetParagraphCount(); + for ( sal_Int32 nPara = 1; nPara < nParaCount; ++nPara ) + { + uno::Sequence< beans::PropertyValue > aSeq = mpImpl->GetParagraph( nPara ).getDefaultAttributes( RequestedAttributes ); + PropertyValueVector aIntersectionVec; + + for ( const auto& rDefAttr : aDefAttrVec ) + { + const beans::PropertyValue* pItr = aSeq.getConstArray(); + const beans::PropertyValue* pEnd = pItr + aSeq.getLength(); + const beans::PropertyValue* pFind = std::find_if( pItr, pEnd, PropertyValueEqualFunctor(rDefAttr) ); + if ( pFind != pEnd ) + { + aIntersectionVec.push_back( *pFind ); + } + } + + aDefAttrVec.swap( aIntersectionVec ); + + if ( aDefAttrVec.empty() ) + { + break; + } + } + + return comphelper::containerToSequence(aDefAttrVec); + } + + uno::Sequence< beans::PropertyValue > SAL_CALL AccessibleStaticTextBase::getRunAttributes( sal_Int32 nIndex, const uno::Sequence< OUString >& RequestedAttributes ) + { + // get those default attributes of the paragraph, which are not part + // of the intersection of all paragraphs and add them to the run attributes + + SolarMutexGuard aGuard; + + EPosition aPos( mpImpl->Index2Internal( nIndex ) ); + AccessibleEditableTextPara& rPara = mpImpl->GetParagraph( aPos.nPara ); + uno::Sequence< beans::PropertyValue > aDefAttrSeq = rPara.getDefaultAttributes( RequestedAttributes ); + uno::Sequence< beans::PropertyValue > aRunAttrSeq = rPara.getRunAttributes( aPos.nIndex, RequestedAttributes ); + uno::Sequence< beans::PropertyValue > aIntersectionSeq = getDefaultAttributes( RequestedAttributes ); + PropertyValueVector aDiffVec; + + const beans::PropertyValue* pDefAttr = aDefAttrSeq.getConstArray(); + const sal_Int32 nLength = aDefAttrSeq.getLength(); + for ( sal_Int32 i = 0; i < nLength; ++i ) + { + const beans::PropertyValue* pItr = aIntersectionSeq.getConstArray(); + const beans::PropertyValue* pEnd = pItr + aIntersectionSeq.getLength(); + bool bNone = std::none_of( pItr, pEnd, PropertyValueEqualFunctor( pDefAttr[i] ) ); + if ( bNone && pDefAttr[i].Handle != 0) + { + aDiffVec.push_back( pDefAttr[i] ); + } + } + + return ::comphelper::concatSequences( aRunAttrSeq, comphelper::containerToSequence(aDiffVec) ); + } + + tools::Rectangle AccessibleStaticTextBase::GetParagraphBoundingBox() const + { + return mpImpl->GetParagraphBoundingBox(); + } + +} // end of namespace accessibility + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |