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#include <wtf/Forward.h>
33
34namespace WebCore {
35
36class AccessibilityTableCell;
37class HTMLTableElement;
38class RenderTableSection;
39
40class AccessibilityTable : public AccessibilityRenderObject {
41public:
42 static Ref<AccessibilityTable> create(RenderObject*);
43 virtual ~AccessibilityTable();
44
45 void init() final;
46
47 AccessibilityRole roleValue() const final;
48 virtual bool isAriaTable() const { return false; }
49
50 void addChildren() override;
51 void clearChildren() final;
52
53 const AccessibilityChildrenVector& columns();
54 const AccessibilityChildrenVector& rows();
55
56 virtual bool supportsSelectedRows() { return false; }
57 unsigned columnCount();
58 unsigned rowCount();
59 int tableLevel() const final;
60
61 String title() const final;
62
63 // all the cells in the table
64 void cells(AccessibilityChildrenVector&);
65 AccessibilityTableCell* cellForColumnAndRow(unsigned column, unsigned row);
66
67 void columnHeaders(AccessibilityChildrenVector&);
68 void rowHeaders(AccessibilityChildrenVector&);
69 void visibleRows(AccessibilityChildrenVector&);
70
71 // an object that contains, as children, all the objects that act as headers
72 AccessibilityObject* headerContainer();
73
74 // isExposableThroughAccessibility() is whether it is exposed as an AccessibilityTable to the platform.
75 bool isExposableThroughAccessibility() const;
76
77 int axColumnCount() const;
78 int axRowCount() const;
79
80protected:
81 explicit AccessibilityTable(RenderObject*);
82
83 AccessibilityChildrenVector m_rows;
84 AccessibilityChildrenVector m_columns;
85
86 RefPtr<AccessibilityObject> m_headerContainer;
87 bool m_isExposableThroughAccessibility;
88
89 bool hasARIARole() const;
90
91 // isTable is whether it's an AccessibilityTable object.
92 bool isTable() const final { return true; }
93 // isDataTable is whether it is exposed as an AccessibilityTable because the heuristic
94 // think this "looks" like a data-based table (instead of a table used for layout).
95 bool isDataTable() const final;
96 bool computeAccessibilityIsIgnored() const final;
97
98private:
99 virtual bool computeIsTableExposableThroughAccessibility() const;
100 void titleElementText(Vector<AccessibilityText>&) const final;
101 HTMLTableElement* tableElement() const;
102 void addChildrenFromSection(RenderTableSection*, unsigned& maxColumnCount);
103 void addTableCellChild(AccessibilityObject*, HashSet<AccessibilityObject*>& appendedRows, unsigned& columnCount);
104};
105
106} // namespace WebCore
107
108SPECIALIZE_TYPE_TRAITS_ACCESSIBILITY(AccessibilityTable, isTable())
109