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 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#pragma once
30
31#include "AccessibilityRenderObject.h"
32
33namespace WebCore {
34
35class AccessibilityTable;
36class AccessibilityTableRow;
37
38class AccessibilityTableCell : public AccessibilityRenderObject {
39public:
40 static Ref<AccessibilityTableCell> create(RenderObject*);
41 virtual ~AccessibilityTableCell();
42
43 bool isTableCell() const final;
44 bool isTableHeaderCell() const;
45 bool isColumnHeaderCell() const;
46 bool isRowHeaderCell() const;
47
48 // fills in the start location and row span of cell
49 virtual void rowIndexRange(std::pair<unsigned, unsigned>& rowRange) const;
50 // fills in the start location and column span of cell
51 virtual void columnIndexRange(std::pair<unsigned, unsigned>& columnRange) const;
52
53 void columnHeaders(AccessibilityChildrenVector&);
54 void rowHeaders(AccessibilityChildrenVector&);
55
56 int axColumnIndex() const;
57 int axRowIndex() const;
58 int axColumnSpan() const;
59 int axRowSpan() const;
60 void setAXColIndexFromRow(int index) { m_axColIndexFromRow = index; }
61
62protected:
63 explicit AccessibilityTableCell(RenderObject*);
64
65 AccessibilityTableRow* parentRow() const;
66 virtual AccessibilityTable* parentTable() const;
67 AccessibilityRole determineAccessibilityRole() final;
68
69 int m_rowIndex;
70 int m_axColIndexFromRow;
71
72private:
73 // If a table cell is not exposed as a table cell, a TH element can serve as its title UI element.
74 AccessibilityObject* titleUIElement() const final;
75 bool exposesTitleUIElement() const final { return true; }
76 bool computeAccessibilityIsIgnored() const final;
77 String expandedTextValue() const final;
78 bool supportsExpandedTextValue() const final;
79
80 bool isTableCellInSameRowGroup(AccessibilityTableCell*);
81 bool isTableCellInSameColGroup(AccessibilityTableCell*);
82};
83
84} // namespace WebCore
85
86SPECIALIZE_TYPE_TRAITS_ACCESSIBILITY(AccessibilityTableCell, isTableCell())
87