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30 #include "core/accessibility/AXTableCell.h"
32 #include "core/accessibility/AXObjectCache.h"
33 #include "core/rendering/RenderTableCell.h"
38 using namespace HTMLNames;
40 AXTableCell::AXTableCell(RenderObject* renderer)
41 : AXRenderObject(renderer)
45 AXTableCell::~AXTableCell()
49 PassRefPtr<AXTableCell> AXTableCell::create(RenderObject* renderer)
51 return adoptRef(new AXTableCell(renderer));
54 bool AXTableCell::computeAccessibilityIsIgnored() const
56 AXObjectInclusion decision = defaultObjectInclusion();
57 if (decision == IncludeObject)
59 if (decision == IgnoreObject)
63 return AXRenderObject::computeAccessibilityIsIgnored();
68 AXObject* AXTableCell::parentTable() const
70 if (!m_renderer || !m_renderer->isTableCell())
73 // If the document no longer exists, we might not have an axObjectCache.
77 // Do not use getOrCreate. parentTable() can be called while the render tree is being modified
78 // by javascript, and creating a table element may try to access the render tree while in a bad state.
79 // By using only get() implies that the AXTable must be created before AXTableCells. This should
80 // always be the case when AT clients access a table.
81 // https://bugs.webkit.org/show_bug.cgi?id=42652
82 return axObjectCache()->get(toRenderTableCell(m_renderer)->table());
85 bool AXTableCell::isTableCell() const
87 AXObject* parent = parentObjectUnignored();
88 if (!parent || !parent->isTableRow())
94 AccessibilityRole AXTableCell::determineAccessibilityRole()
97 return AXRenderObject::determineAccessibilityRole();
102 void AXTableCell::rowIndexRange(pair<unsigned, unsigned>& rowRange)
104 if (!m_renderer || !m_renderer->isTableCell())
107 RenderTableCell* renderCell = toRenderTableCell(m_renderer);
108 rowRange.first = renderCell->rowIndex();
109 rowRange.second = renderCell->rowSpan();
111 // since our table might have multiple sections, we have to offset our row appropriately
112 RenderTableSection* section = renderCell->section();
113 RenderTable* table = renderCell->table();
114 if (!table || !section)
117 RenderTableSection* tableSection = table->topSection();
118 unsigned rowOffset = 0;
119 while (tableSection) {
120 if (tableSection == section)
122 rowOffset += tableSection->numRows();
123 tableSection = table->sectionBelow(tableSection, SkipEmptySections);
126 rowRange.first += rowOffset;
129 void AXTableCell::columnIndexRange(pair<unsigned, unsigned>& columnRange)
131 if (!m_renderer || !m_renderer->isTableCell())
134 RenderTableCell* renderCell = toRenderTableCell(m_renderer);
135 columnRange.first = renderCell->col();
136 columnRange.second = renderCell->colSpan();
139 AXObject* AXTableCell::titleUIElement() const
141 // Try to find if the first cell in this row is a <th>. If it is,
142 // then it can act as the title ui element. (This is only in the
143 // case when the table is not appearing as an AXTable.)
144 if (isTableCell() || !m_renderer || !m_renderer->isTableCell())
147 // Table cells that are th cannot have title ui elements, since by definition
148 // they are title ui elements
149 Node* node = m_renderer->node();
150 if (node && node->hasTagName(thTag))
153 RenderTableCell* renderCell = toRenderTableCell(m_renderer);
155 // If this cell is in the first column, there is no need to continue.
156 int col = renderCell->col();
160 int row = renderCell->rowIndex();
162 RenderTableSection* section = renderCell->section();
166 RenderTableCell* headerCell = section->primaryCellAt(row, 0);
167 if (!headerCell || headerCell == renderCell)
170 Node* cellElement = headerCell->node();
171 if (!cellElement || !cellElement->hasTagName(thTag))
174 return axObjectCache()->getOrCreate(headerCell);