1 /*
2 * Copyright (C) 2008 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/AXTableRow.h"
31
32 #include "core/accessibility/AXTableCell.h"
33 #include "core/rendering/RenderTableRow.h"
34
35
36 namespace blink {
37
38 using namespace HTMLNames;
39
AXTableRow(RenderObject * renderer)40 AXTableRow::AXTableRow(RenderObject* renderer)
41 : AXRenderObject(renderer)
42 {
43 }
44
~AXTableRow()45 AXTableRow::~AXTableRow()
46 {
47 }
48
create(RenderObject * renderer)49 PassRefPtr<AXTableRow> AXTableRow::create(RenderObject* renderer)
50 {
51 return adoptRef(new AXTableRow(renderer));
52 }
53
determineAccessibilityRole()54 AccessibilityRole AXTableRow::determineAccessibilityRole()
55 {
56 if (!isTableRow())
57 return AXRenderObject::determineAccessibilityRole();
58
59 m_ariaRole = determineAriaRoleAttribute();
60
61 AccessibilityRole ariaRole = ariaRoleAttribute();
62 if (ariaRole != UnknownRole)
63 return ariaRole;
64
65 return RowRole;
66 }
67
isTableRow() const68 bool AXTableRow::isTableRow() const
69 {
70 AXObject* table = parentTable();
71 if (!table || !table->isAXTable())
72 return false;
73
74 return true;
75 }
76
observableObject() const77 AXObject* AXTableRow::observableObject() const
78 {
79 // This allows the table to be the one who sends notifications about tables.
80 return parentTable();
81 }
82
computeAccessibilityIsIgnored() const83 bool AXTableRow::computeAccessibilityIsIgnored() const
84 {
85 AXObjectInclusion decision = defaultObjectInclusion();
86 if (decision == IncludeObject)
87 return false;
88 if (decision == IgnoreObject)
89 return true;
90
91 if (!isTableRow())
92 return AXRenderObject::computeAccessibilityIsIgnored();
93
94 return false;
95 }
96
parentTable() const97 AXObject* AXTableRow::parentTable() const
98 {
99 AXObject* parent = parentObjectUnignored();
100 if (!parent || !parent->isAXTable())
101 return 0;
102
103 return parent;
104 }
105
headerObject()106 AXObject* AXTableRow::headerObject()
107 {
108 if (!m_renderer || !m_renderer->isTableRow())
109 return 0;
110
111 AccessibilityChildrenVector rowChildren = children();
112 if (!rowChildren.size())
113 return 0;
114
115 // check the first element in the row to see if it is a TH element
116 AXObject* cell = rowChildren[0].get();
117 if (!cell->isTableCell())
118 return 0;
119
120 RenderObject* cellRenderer = toAXTableCell(cell)->renderer();
121 if (!cellRenderer)
122 return 0;
123
124 Node* cellNode = cellRenderer->node();
125 if (!cellNode || !cellNode->hasTagName(thTag))
126 return 0;
127
128 return cell;
129 }
130
131 } // namespace blink
132