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Diffstat (limited to 'vcl/osx/a11ytablewrapper.mm')
| -rw-r--r-- | vcl/osx/a11ytablewrapper.mm | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/vcl/osx/a11ytablewrapper.mm b/vcl/osx/a11ytablewrapper.mm new file mode 100644 index 0000000000..1c155313c9 --- /dev/null +++ b/vcl/osx/a11ytablewrapper.mm @@ -0,0 +1,212 @@ +/* -*- 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 <osx/a11yfactory.h> +#include <sal/log.hxx> +#include "a11ytablewrapper.h" + +using namespace ::com::sun::star::accessibility; +using namespace ::com::sun::star::awt; +using namespace ::com::sun::star::uno; + +@implementation AquaA11yTableWrapper : AquaA11yWrapper + ++(id)childrenAttributeForElement:(AquaA11yTableWrapper *)wrapper +{ + XAccessibleTable * accessibleTable = [ wrapper accessibleTable ]; + NSArray* pResult = nil; + if( accessibleTable ) + { + NSMutableArray * cells = [ [ NSMutableArray alloc ] init ]; + try + { + sal_Int32 nRows = accessibleTable->getAccessibleRowCount(); + sal_Int32 nCols = accessibleTable->getAccessibleColumnCount(); + + // tdf#152648 Handle overflow when multiplying rows and columns + sal_Int64 nCells = static_cast<sal_Int64>(nRows) * static_cast<sal_Int64>(nCols); + if( nCells >= 0 && nCells < MAXIMUM_ACCESSIBLE_TABLE_CELLS ) + { + // make all children visible to the hierarchy + for ( sal_Int32 rowCount = 0; rowCount < nRows; rowCount++ ) + { + for ( sal_Int32 columnCount = 0; columnCount < nCols; columnCount++ ) + { + Reference < XAccessible > rAccessibleCell = accessibleTable -> getAccessibleCellAt ( rowCount, columnCount ); + if ( rAccessibleCell.is() ) + { + id cell_wrapper = [ AquaA11yFactory wrapperForAccessibleContext: rAccessibleCell -> getAccessibleContext() ]; + [ cells addObject: cell_wrapper ]; + [ cell_wrapper release ]; + } + } + } + } + else + { + XAccessibleComponent * accessibleComponent = [ wrapper accessibleComponent ]; + // find out which cells are actually visible by determining the top-left-cell and the bottom-right-cell + Size tableSize = accessibleComponent -> getSize(); + Point point; + point.X = 0; + point.Y = 0; + Reference < XAccessible > rAccessibleTopLeft = accessibleComponent -> getAccessibleAtPoint ( point ); + point.X = tableSize.Width - 1; + point.Y = tableSize.Height - 1; + Reference < XAccessible > rAccessibleBottomRight = accessibleComponent -> getAccessibleAtPoint ( point ); + if ( rAccessibleTopLeft.is() && rAccessibleBottomRight.is() ) + { + sal_Int64 idxTopLeft = rAccessibleTopLeft -> getAccessibleContext() -> getAccessibleIndexInParent(); + sal_Int64 idxBottomRight = rAccessibleBottomRight -> getAccessibleContext() -> getAccessibleIndexInParent(); + sal_Int32 rowTopLeft = accessibleTable -> getAccessibleRow ( idxTopLeft ); + sal_Int32 columnTopLeft = accessibleTable -> getAccessibleColumn ( idxTopLeft ); + sal_Int32 rowBottomRight = accessibleTable -> getAccessibleRow ( idxBottomRight ); + sal_Int32 columnBottomRight = accessibleTable -> getAccessibleColumn ( idxBottomRight ); + SAL_WARN("vcl", "creating " << ((rowBottomRight - rowTopLeft) * (columnBottomRight - columnTopLeft)) << " cells"); + // create an array containing the visible cells + for ( sal_Int32 rowCount = rowTopLeft; rowCount <= rowBottomRight; rowCount++ ) + { + for ( sal_Int32 columnCount = columnTopLeft; columnCount <= columnBottomRight; columnCount++ ) + { + Reference < XAccessible > rAccessibleCell = accessibleTable -> getAccessibleCellAt ( rowCount, columnCount ); + if ( rAccessibleCell.is() ) + { + id cell_wrapper = [ AquaA11yFactory wrapperForAccessibleContext: rAccessibleCell -> getAccessibleContext() ]; + [ cells addObject: cell_wrapper ]; + [ cell_wrapper release ]; + } + } + } + } + } + pResult = NSAccessibilityUnignoredChildren( cells ); + } + catch (const Exception &) + { + } + [cells autorelease]; + } + + return pResult; +} + ++(void)addAttributeNamesTo: (NSMutableArray *)attributeNames object: (AquaA11yWrapper*)pObject +{ + XAccessibleTable * accessibleTable = [ pObject accessibleTable ]; + if( accessibleTable ) + { + sal_Int32 nRows = accessibleTable->getAccessibleRowCount(); + sal_Int32 nCols = accessibleTable->getAccessibleColumnCount(); + + // tdf#152648 Handle overflow when multiplying rows and columns + sal_Int64 nCells = static_cast<sal_Int64>(nRows) * static_cast<sal_Int64>(nCols); + if( nCells >= 0 && nCells < MAXIMUM_ACCESSIBLE_TABLE_CELLS ) + { + [ attributeNames addObject: NSAccessibilityRowsAttribute ]; + [ attributeNames addObject: NSAccessibilityColumnsAttribute ]; + } + } +} + +-(id)rowsAttribute +{ + NSArray* pResult = nil; + + XAccessibleTable * accessibleTable = [ self accessibleTable ]; + if( accessibleTable ) + { + sal_Int32 nRows = accessibleTable->getAccessibleRowCount(); + sal_Int32 nCols = accessibleTable->getAccessibleColumnCount(); + + // tdf#152648 Handle overflow when multiplying rows and columns + sal_Int64 nCells = static_cast<sal_Int64>(nRows) * static_cast<sal_Int64>(nCols); + if( nCells >= 0 && nCells < MAXIMUM_ACCESSIBLE_TABLE_CELLS ) + { + NSMutableArray * cells = [ [ NSMutableArray alloc ] init ]; + try + { + for( sal_Int32 n = 0; n < nRows; n++ ) + { + Reference < XAccessible > rAccessibleCell = accessibleTable -> getAccessibleCellAt ( n, 0 ); + if ( rAccessibleCell.is() ) + { + id cell_wrapper = [ AquaA11yFactory wrapperForAccessibleContext: rAccessibleCell -> getAccessibleContext() ]; + [ cells addObject: cell_wrapper ]; + [ cell_wrapper release ]; + } + } + pResult = NSAccessibilityUnignoredChildren( cells ); + } + catch (const Exception &) + { + pResult = nil; + } + [ cells autorelease ]; + } + } + + return pResult; +} + +-(id)columnsAttribute +{ + NSArray* pResult = nil; + + XAccessibleTable * accessibleTable = [ self accessibleTable ]; + + if( accessibleTable ) + { + sal_Int32 nRows = accessibleTable->getAccessibleRowCount(); + sal_Int32 nCols = accessibleTable->getAccessibleColumnCount(); + + // tdf#152648 Handle overflow when multiplying rows and columns + sal_Int64 nCells = static_cast<sal_Int64>(nRows) * static_cast<sal_Int64>(nCols); + if( nCells >= 0 && nCells < MAXIMUM_ACCESSIBLE_TABLE_CELLS ) + { + NSMutableArray * cells = [ [ NSMutableArray alloc ] init ]; + try + { + // find out number of columns + for( sal_Int32 n = 0; n < nCols; n++ ) + { + Reference < XAccessible > rAccessibleCell = accessibleTable -> getAccessibleCellAt ( 0, n ); + if ( rAccessibleCell.is() ) + { + id cell_wrapper = [ AquaA11yFactory wrapperForAccessibleContext: rAccessibleCell -> getAccessibleContext() ]; + [ cells addObject: cell_wrapper ]; + [ cell_wrapper release ]; + } + } + pResult = NSAccessibilityUnignoredChildren( cells ); + } + catch (const Exception &) + { + pResult = nil; + } + [ cells autorelease ]; + } + } + + return pResult; +} + +@end + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |