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 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 "AccessibilityARIAGrid.h"
31
32#include "AXObjectCache.h"
33#include "AccessibilityARIAGridRow.h"
34#include "AccessibilityTableCell.h"
35#include "AccessibilityTableColumn.h"
36#include "AccessibilityTableHeaderContainer.h"
37#include "RenderObject.h"
38#include "RenderTableSection.h"
39
40namespace WebCore {
41
42AccessibilityARIAGrid::AccessibilityARIAGrid(RenderObject* renderer)
43 : AccessibilityTable(renderer)
44{
45}
46
47AccessibilityARIAGrid::~AccessibilityARIAGrid() = default;
48
49Ref<AccessibilityARIAGrid> AccessibilityARIAGrid::create(RenderObject* renderer)
50{
51 return adoptRef(*new AccessibilityARIAGrid(renderer));
52}
53
54bool AccessibilityARIAGrid::addTableCellChild(AccessibilityObject* child, HashSet<AccessibilityObject*>& appendedRows, unsigned& columnCount)
55{
56 if (!child || (!is<AccessibilityTableRow>(*child) && !is<AccessibilityARIAGridRow>(*child)))
57 return false;
58
59 auto& row = downcast<AccessibilityTableRow>(*child);
60 if (appendedRows.contains(&row))
61 return false;
62
63 // store the maximum number of columns
64 unsigned rowCellCount = row.children().size();
65 if (rowCellCount > columnCount)
66 columnCount = rowCellCount;
67
68 row.setRowIndex((int)m_rows.size());
69 m_rows.append(&row);
70
71 // Try adding the row if it's not ignoring accessibility,
72 // otherwise add its children (the cells) as the grid's children.
73 if (!row.accessibilityIsIgnored())
74 m_children.append(&row);
75 else
76 m_children.appendVector(row.children());
77
78 appendedRows.add(&row);
79 return true;
80}
81
82bool AccessibilityARIAGrid::isMultiSelectable() const
83{
84 const AtomicString& ariaMultiSelectable = getAttribute(HTMLNames::aria_multiselectableAttr);
85 return !equalLettersIgnoringASCIICase(ariaMultiSelectable, "false");
86}
87
88void AccessibilityARIAGrid::addRowDescendant(AccessibilityObject* rowChild, HashSet<AccessibilityObject*>& appendedRows, unsigned& columnCount)
89{
90 if (!rowChild)
91 return;
92
93 if (!rowChild->isTableRow() || !rowChild->node()) {
94 // Although a "grid" should have rows as its direct descendants, if this is not a table row,
95 // or this row is anonymous, dive deeper into the descendants to try to find a valid row.
96 for (const auto& child : rowChild->children())
97 addRowDescendant(child.get(), appendedRows, columnCount);
98 } else
99 addTableCellChild(rowChild, appendedRows, columnCount);
100}
101
102void AccessibilityARIAGrid::addChildren()
103{
104 ASSERT(!m_haveChildren);
105
106 if (!isExposableThroughAccessibility()) {
107 AccessibilityRenderObject::addChildren();
108 return;
109 }
110
111 m_haveChildren = true;
112 if (!m_renderer)
113 return;
114
115 AXObjectCache* axCache = m_renderer->document().axObjectCache();
116
117 // Add the children rows but be mindful in case there are footer sections in this table.
118 HashSet<AccessibilityObject*> appendedRows;
119 unsigned columnCount = 0;
120 AccessibilityChildrenVector footerSections;
121 for (RefPtr<AccessibilityObject> child = firstChild(); child; child = child->nextSibling()) {
122 bool footerSection = false;
123 if (RenderObject* childRenderer = child->renderer()) {
124 if (is<RenderTableSection>(*childRenderer)) {
125 RenderTableSection& childSection = downcast<RenderTableSection>(*childRenderer);
126 if (&childSection == childSection.table()->footer()) {
127 footerSections.append(child);
128 footerSection = true;
129 }
130 }
131 }
132 if (!footerSection)
133 addRowDescendant(child.get(), appendedRows, columnCount);
134 }
135
136 for (const auto& footerSection : footerSections)
137 addRowDescendant(footerSection.get(), appendedRows, columnCount);
138
139 // make the columns based on the number of columns in the first body
140 for (unsigned i = 0; i < columnCount; ++i) {
141 auto& column = downcast<AccessibilityTableColumn>(*axCache->getOrCreate(AccessibilityRole::Column));
142 column.setColumnIndex(static_cast<int>(i));
143 column.setParent(this);
144 m_columns.append(&column);
145 if (!column.accessibilityIsIgnored())
146 m_children.append(&column);
147 }
148
149 AccessibilityObject* headerContainerObject = headerContainer();
150 if (headerContainerObject && !headerContainerObject->accessibilityIsIgnored())
151 m_children.append(headerContainerObject);
152}
153
154} // namespace WebCore
155