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 "AccessibilityARIAGridCell.h"
31
32 #include "AccessibilityObject.h"
33 #include "AccessibilityTable.h"
34 #include "AccessibilityTableRow.h"
35
36 using namespace std;
37
38 namespace WebCore {
39
AccessibilityARIAGridCell(RenderObject * renderer)40 AccessibilityARIAGridCell::AccessibilityARIAGridCell(RenderObject* renderer)
41 : AccessibilityTableCell(renderer)
42 {
43 }
44
~AccessibilityARIAGridCell()45 AccessibilityARIAGridCell::~AccessibilityARIAGridCell()
46 {
47 }
48
create(RenderObject * renderer)49 PassRefPtr<AccessibilityARIAGridCell> AccessibilityARIAGridCell::create(RenderObject* renderer)
50 {
51 return adoptRef(new AccessibilityARIAGridCell(renderer));
52 }
53
parentTable() const54 AccessibilityObject* AccessibilityARIAGridCell::parentTable() const
55 {
56 AccessibilityObject* parent = parentObjectUnignored();
57 if (!parent)
58 return 0;
59
60 if (parent->isAccessibilityTable())
61 return parent;
62
63 // It could happen that we hadn't reached the parent table yet (in
64 // case objects for rows were not ignoring accessibility) so for
65 // that reason we need to run parentObjectUnignored once again.
66 parent = parent->parentObjectUnignored();
67 if (!parent || !parent->isAccessibilityTable())
68 return 0;
69
70 return parent;
71 }
72
rowIndexRange(pair<int,int> & rowRange)73 void AccessibilityARIAGridCell::rowIndexRange(pair<int, int>& rowRange)
74 {
75 AccessibilityObject* parent = parentObjectUnignored();
76 if (!parent)
77 return;
78
79 if (parent->isTableRow()) {
80 // We already got a table row, use its API.
81 rowRange.first = static_cast<AccessibilityTableRow*>(parent)->rowIndex();
82 } else if (parent->isAccessibilityTable()) {
83 // We reached the parent table, so we need to inspect its
84 // children to determine the row index for the cell in it.
85 unsigned columnCount = static_cast<AccessibilityTable*>(parent)->columnCount();
86 if (!columnCount)
87 return;
88
89 AccessibilityChildrenVector siblings = parent->children();
90 unsigned childrenSize = siblings.size();
91 for (unsigned k = 0; k < childrenSize; ++k) {
92 if (siblings[k].get() == this) {
93 rowRange.first = k / columnCount;
94 break;
95 }
96 }
97 }
98
99 // as far as I can tell, grid cells cannot span rows
100 rowRange.second = 1;
101 }
102
columnIndexRange(pair<int,int> & columnRange)103 void AccessibilityARIAGridCell::columnIndexRange(pair<int, int>& columnRange)
104 {
105 AccessibilityObject* parent = parentObjectUnignored();
106 if (!parent)
107 return;
108
109 if (!parent->isTableRow() && !parent->isAccessibilityTable())
110 return;
111
112 AccessibilityChildrenVector siblings = parent->children();
113 unsigned childrenSize = siblings.size();
114 for (unsigned k = 0; k < childrenSize; ++k) {
115 if (siblings[k].get() == this) {
116 columnRange.first = k;
117 break;
118 }
119 }
120
121 // as far as I can tell, grid cells cannot span columns
122 columnRange.second = 1;
123 }
124
125 } // namespace WebCore
126