summaryrefslogtreecommitdiff
path: root/vcl/osx/a11ytextwrapper.mm
blob: a39037f079b1368fb1f2b683a4a65f8c39eab723 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
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 {
        long 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: */