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| -rw-r--r-- | vcl/osx/a11ytextwrapper.mm | 296 |
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diff --git a/vcl/osx/a11ytextwrapper.mm b/vcl/osx/a11ytextwrapper.mm new file mode 100644 index 000000000..cfd4ae7c1 --- /dev/null +++ b/vcl/osx/a11ytextwrapper.mm @@ -0,0 +1,296 @@ +/* -*- 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/salinst.h> +#include <quartz/utils.h> +#include "a11ytextwrapper.h" +#include "a11ytextattributeswrapper.h" +#include "a11yutil.h" + +#include <com/sun/star/accessibility/AccessibleTextType.hpp> +#include <com/sun/star/awt/Rectangle.hpp> +#include <com/sun/star/lang/IllegalArgumentException.hpp> +#include <com/sun/star/lang/IndexOutOfBoundsException.hpp> + +using namespace ::com::sun::star::accessibility; +using namespace ::com::sun::star::awt; +using namespace ::com::sun::star::lang; +using namespace ::com::sun::star::uno; + +// Wrapper for XAccessibleText, XAccessibleEditableText and XAccessibleMultiLineText + +@implementation AquaA11yTextWrapper : NSObject + ++(id)valueAttributeForElement:(AquaA11yWrapper *)wrapper { + return CreateNSString ( [ wrapper accessibleText ] -> getText() ); +} + ++(void)setValueAttributeForElement:(AquaA11yWrapper *)wrapper to:(id)value +{ + // TODO + (void)wrapper; + (void)value; +} + ++(id)numberOfCharactersAttributeForElement:(AquaA11yWrapper *)wrapper { + return [ NSNumber numberWithLong: [ wrapper accessibleText ] -> getCharacterCount() ]; +} + ++(id)selectedTextAttributeForElement:(AquaA11yWrapper *)wrapper { + return CreateNSString ( [ wrapper accessibleText ] -> getSelectedText() ); +} + ++(void)setSelectedTextAttributeForElement:(AquaA11yWrapper *)wrapper to:(id)value { + if ( [ wrapper accessibleEditableText ] ) { + NSAutoreleasePool * pool = [ [ NSAutoreleasePool alloc ] init ]; + OUString newText = GetOUString ( static_cast<NSString *>(value) ); + NSRange selectedTextRange = [ [ AquaA11yTextWrapper selectedTextRangeAttributeForElement: wrapper ] rangeValue ]; + try { + [ wrapper accessibleEditableText ] -> replaceText ( selectedTextRange.location, selectedTextRange.location + selectedTextRange.length, newText ); + } catch ( const Exception & ) { + // empty + } + [ pool release ]; + } +} + ++(id)selectedTextRangeAttributeForElement:(AquaA11yWrapper *)wrapper { + sal_Int32 start = [ wrapper accessibleText ] -> getSelectionStart(); + sal_Int32 end = [ wrapper accessibleText ] -> getSelectionEnd(); + if ( start != end ) { + return [ NSValue valueWithRange: NSMakeRange ( start, end - start ) ]; // true selection + } else { + sal_Int32 caretPos = [ wrapper accessibleText ] -> getCaretPosition(); + if ( caretPos < 0 || caretPos > [ wrapper accessibleText ] -> getCharacterCount() ) { + return nil; + } + return [ NSValue valueWithRange: NSMakeRange ( caretPos, 0 ) ]; // insertion point + } +} + ++(void)setSelectedTextRangeAttributeForElement:(AquaA11yWrapper *)wrapper to:(id)value { + NSRange range = [ value rangeValue ]; + try { + [ wrapper accessibleText ] -> setSelection ( range.location, range.location + range.length ); + } catch ( const Exception & ) { + // empty + } +} + ++(id)visibleCharacterRangeAttributeForElement:(AquaA11yWrapper *)wrapper { + // the OOo a11y API returns only the visible portion... + return [ NSValue valueWithRange: NSMakeRange ( 0, [ wrapper accessibleText ] -> getCharacterCount() ) ]; +} + ++(void)setVisibleCharacterRangeAttributeForElement:(AquaA11yWrapper *)wrapper to:(id)value +{ + // do nothing + (void)wrapper; + (void)value; +} + ++(id)sharedTextUIElementsAttributeForElement:(AquaA11yWrapper *)wrapper +{ + return [NSArray arrayWithObject:wrapper]; +} + ++(id)sharedCharacterRangeAttributeForElement:(AquaA11yWrapper *)wrapper +{ + return [ NSValue valueWithRange: NSMakeRange ( 0, [wrapper accessibleText]->getCharacterCount() ) ]; +} + ++(void)addAttributeNamesTo:(NSMutableArray *)attributeNames { + [ attributeNames addObjectsFromArray: [ AquaA11yTextWrapper specialAttributeNames ] ]; +} + ++(NSArray *)specialAttributeNames { + return [ NSArray arrayWithObjects: + NSAccessibilityValueAttribute, + NSAccessibilityNumberOfCharactersAttribute, + NSAccessibilitySelectedTextAttribute, + NSAccessibilitySelectedTextRangeAttribute, + NSAccessibilityVisibleCharacterRangeAttribute, + NSAccessibilitySharedTextUIElementsAttribute, + NSAccessibilitySharedCharacterRangeAttribute, + nil ]; +} + ++(void)addParameterizedAttributeNamesTo:(NSMutableArray *)attributeNames { + [ attributeNames addObjectsFromArray: [ AquaA11yTextWrapper specialParameterizedAttributeNames ] ]; +} + ++(NSArray *)specialParameterizedAttributeNames { + return [ NSArray arrayWithObjects: + NSAccessibilityStringForRangeParameterizedAttribute, + NSAccessibilityAttributedStringForRangeParameterizedAttribute, + NSAccessibilityRangeForIndexParameterizedAttribute, + NSAccessibilityRangeForPositionParameterizedAttribute, + NSAccessibilityBoundsForRangeParameterizedAttribute, + NSAccessibilityStyleRangeForIndexParameterizedAttribute, + NSAccessibilityRTFForRangeParameterizedAttribute, + NSAccessibilityLineForIndexParameterizedAttribute, + NSAccessibilityRangeForLineParameterizedAttribute, + nil ]; +} + ++(id)lineForIndexAttributeForElement:(AquaA11yWrapper *)wrapper forParameter:(id)index { + NSNumber * lineNumber = nil; + try { + sal_Int32 line = [ wrapper accessibleMultiLineText ] -> getLineNumberAtIndex ( static_cast<sal_Int32>([ index intValue ]) ); + lineNumber = [ NSNumber numberWithInt: line ]; + } catch ( IndexOutOfBoundsException & ) { + // empty + } + return lineNumber; +} + ++(id)rangeForLineAttributeForElement:(AquaA11yWrapper *)wrapper forParameter:(id)line { + NSValue * range = nil; + try { + TextSegment textSegment = [ wrapper accessibleMultiLineText ] -> getTextAtLineNumber ( [ line intValue ] ); + range = [ NSValue valueWithRange: NSMakeRange ( textSegment.SegmentStart, textSegment.SegmentEnd - textSegment.SegmentStart ) ]; + } catch ( IndexOutOfBoundsException & ) { + // empty + } + return range; +} + ++(id)stringForRangeAttributeForElement:(AquaA11yWrapper *)wrapper forParameter:(id)range { + int loc = [ range rangeValue ].location; + int len = [ range rangeValue ].length; + NSMutableString * textRange = [ [ NSMutableString alloc ] init ]; + try { + [ textRange appendString: CreateNSString ( [ wrapper accessibleText ] -> getTextRange ( loc, loc + len ) ) ]; + } catch ( IndexOutOfBoundsException & ) { + // empty + } + return textRange; +} + ++(id)attributedStringForRangeAttributeForElement:(AquaA11yWrapper *)wrapper forParameter:(id)range { + return [ AquaA11yTextAttributesWrapper createAttributedStringForElement: wrapper inOrigRange: range ]; +} + ++(id)rangeForIndexAttributeForElement:(AquaA11yWrapper *)wrapper forParameter:(id)index { + NSValue * range = nil; + try { + TextSegment textSegment = [ wrapper accessibleText ] -> getTextBeforeIndex ( [ index intValue ], AccessibleTextType::GLYPH ); + range = [ NSValue valueWithRange: NSMakeRange ( textSegment.SegmentStart, textSegment.SegmentEnd - textSegment.SegmentStart ) ]; + } catch ( IndexOutOfBoundsException & ) { + // empty + } catch ( IllegalArgumentException & ) { + // empty + } + return range; +} + ++(id)rangeForPositionAttributeForElement:(AquaA11yWrapper *)wrapper forParameter:(id)point { + NSValue * value = nil; + css::awt::Point aPoint( [ AquaA11yUtil nsPointToVclPoint: point ]); + const css::awt::Point screenPos = [ wrapper accessibleComponent ] -> getLocationOnScreen(); + aPoint.X -= screenPos.X; + aPoint.Y -= screenPos.Y; + sal_Int32 index = [ wrapper accessibleText ] -> getIndexAtPoint( aPoint ); + if ( index > -1 ) { + value = [ AquaA11yTextWrapper rangeForIndexAttributeForElement: wrapper forParameter: [ NSNumber numberWithLong: index ] ]; + } + return value; +} + ++(id)boundsForRangeAttributeForElement:(AquaA11yWrapper *)wrapper forParameter:(id)range { + NSValue * rect = nil; + try { + // TODO: this is ugly!!! + // the UNP-API can only return the bounds for a single character, not for a range + int loc = [ range rangeValue ].location; + int len = [ range rangeValue ].length; + int minx = 0x7fffffff, miny = 0x7fffffff, maxx = 0, maxy = 0; + for ( int i = 0; i < len; i++ ) { + Rectangle vclRect = [ wrapper accessibleText ] -> getCharacterBounds ( loc + i ); + if ( vclRect.X < minx ) { + minx = vclRect.X; + } + if ( vclRect.Y < miny ) { + miny = vclRect.Y; + } + if ( vclRect.Width + vclRect.X > maxx ) { + maxx = vclRect.Width + vclRect.X; + } + if ( vclRect.Height + vclRect.Y > maxy ) { + maxy = vclRect.Height + vclRect.Y; + } + } + if ( [ wrapper accessibleComponent ] ) { + // get location on screen (must be added since get CharacterBounds returns values relative to parent) + css::awt::Point screenPos = [ wrapper accessibleComponent ] -> getLocationOnScreen(); + css::awt::Point pos ( minx + screenPos.X, miny + screenPos.Y ); + css::awt::Point size ( maxx - minx, maxy - miny ); + NSValue * nsPos = [ AquaA11yUtil vclPointToNSPoint: pos ]; + rect = [ NSValue valueWithRect: NSMakeRect ( [ nsPos pointValue ].x, [ nsPos pointValue ].y - size.Y, size.X, size.Y ) ]; + //printf("Range: %s --- Rect: %s\n", [ NSStringFromRange ( [ range rangeValue ] ) UTF8String ], [ NSStringFromRect ( [ rect rectValue ] ) UTF8String ]); + } + } catch ( IndexOutOfBoundsException & ) { + // empty + } + return rect; +} + ++(id)styleRangeForIndexAttributeForElement:(AquaA11yWrapper *)wrapper forParameter:(id)index { + NSValue * range = nil; + try { + TextSegment textSegment = [ wrapper accessibleText ] -> getTextAtIndex ( [ index intValue ], AccessibleTextType::ATTRIBUTE_RUN ); + range = [ NSValue valueWithRange: NSMakeRange ( textSegment.SegmentStart, textSegment.SegmentEnd - textSegment.SegmentStart ) ]; + } catch ( IndexOutOfBoundsException & ) { + // empty + } catch ( IllegalArgumentException & ) { + // empty + } + return range; +} + ++(id)rTFForRangeAttributeForElement:(AquaA11yWrapper *)wrapper forParameter:(id)range { + NSData * rtfData = nil; + NSAttributedString * attrString = static_cast<NSAttributedString *>([ AquaA11yTextWrapper attributedStringForRangeAttributeForElement: wrapper forParameter: range ]); + if ( attrString != nil ) { + @try { + rtfData = [ attrString RTFFromRange: [ range rangeValue ] documentAttributes: @{NSDocumentTypeDocumentAttribute : NSRTFTextDocumentType} ]; + } @catch ( NSException *) { + // empty + } + } + return rtfData; +} + ++(BOOL)isAttributeSettable:(NSString *)attribute forElement:(AquaA11yWrapper *)wrapper { + bool isSettable = false; + if ( [ attribute isEqualToString: NSAccessibilityValueAttribute ] + || [ attribute isEqualToString: NSAccessibilitySelectedTextAttribute ] + || [ attribute isEqualToString: NSAccessibilitySelectedTextRangeAttribute ] + || [ attribute isEqualToString: NSAccessibilityVisibleCharacterRangeAttribute ] ) { + if ( ! [ [ wrapper accessibilityAttributeValue: NSAccessibilityRoleAttribute ] isEqualToString: NSAccessibilityStaticTextRole ] ) { + isSettable = true; + } + } + return isSettable; +} + +@end + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |