1 /*
2 * Copyright (C) 2009 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "config.h"
30 #include "core/accessibility/AXARIAGridCell.h"
31
32 #include "core/accessibility/AXTable.h"
33 #include "core/accessibility/AXTableRow.h"
34
35
36 namespace WebCore {
37
AXARIAGridCell(RenderObject * renderer)38 AXARIAGridCell::AXARIAGridCell(RenderObject* renderer)
39 : AXTableCell(renderer)
40 {
41 }
42
~AXARIAGridCell()43 AXARIAGridCell::~AXARIAGridCell()
44 {
45 }
46
create(RenderObject * renderer)47 PassRefPtr<AXARIAGridCell> AXARIAGridCell::create(RenderObject* renderer)
48 {
49 return adoptRef(new AXARIAGridCell(renderer));
50 }
51
parentTable() const52 AXObject* AXARIAGridCell::parentTable() const
53 {
54 AXObject* parent = parentObjectUnignored();
55 if (!parent)
56 return 0;
57
58 if (parent->isAXTable())
59 return parent;
60
61 // It could happen that we hadn't reached the parent table yet (in
62 // case objects for rows were not ignoring accessibility) so for
63 // that reason we need to run parentObjectUnignored once again.
64 parent = parent->parentObjectUnignored();
65 if (!parent || !parent->isAXTable())
66 return 0;
67
68 return parent;
69 }
70
rowIndexRange(pair<unsigned,unsigned> & rowRange)71 void AXARIAGridCell::rowIndexRange(pair<unsigned, unsigned>& rowRange)
72 {
73 AXObject* parent = parentObjectUnignored();
74 if (!parent)
75 return;
76
77 if (parent->isTableRow()) {
78 // We already got a table row, use its API.
79 rowRange.first = toAXTableRow(parent)->rowIndex();
80 } else if (parent->isAXTable()) {
81 // We reached the parent table, so we need to inspect its
82 // children to determine the row index for the cell in it.
83 unsigned columnCount = toAXTable(parent)->columnCount();
84 if (!columnCount)
85 return;
86
87 AccessibilityChildrenVector siblings = parent->children();
88 unsigned childrenSize = siblings.size();
89 for (unsigned k = 0; k < childrenSize; ++k) {
90 if (siblings[k].get() == this) {
91 rowRange.first = k / columnCount;
92 break;
93 }
94 }
95 }
96
97 // as far as I can tell, grid cells cannot span rows
98 rowRange.second = 1;
99 }
100
columnIndexRange(pair<unsigned,unsigned> & columnRange)101 void AXARIAGridCell::columnIndexRange(pair<unsigned, unsigned>& columnRange)
102 {
103 AXObject* parent = parentObjectUnignored();
104 if (!parent)
105 return;
106
107 if (!parent->isTableRow() && !parent->isAXTable())
108 return;
109
110 AccessibilityChildrenVector siblings = parent->children();
111 unsigned childrenSize = siblings.size();
112 for (unsigned k = 0; k < childrenSize; ++k) {
113 if (siblings[k].get() == this) {
114 columnRange.first = k;
115 break;
116 }
117 }
118
119 // as far as I can tell, grid cells cannot span columns
120 columnRange.second = 1;
121 }
122
123 } // namespace WebCore
124