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#ifndef AccessibilityTable_h
30#define AccessibilityTable_h
31
32#include "AccessibilityRenderObject.h"
33#include <wtf/Forward.h>
34
35namespace WebCore {
36
37class AccessibilityTableCell;
38class HTMLTableElement;
39class RenderTableSection;
40
41class AccessibilityTable : public AccessibilityRenderObject {
42
43protected:
44    explicit AccessibilityTable(RenderObject*);
45public:
46    static PassRefPtr<AccessibilityTable> create(RenderObject*);
47    virtual ~AccessibilityTable();
48
49    virtual void init() override;
50
51    virtual AccessibilityRole roleValue() const override;
52    virtual bool isAriaTable() const { return false; }
53
54    virtual void addChildren() override;
55    virtual void clearChildren() override;
56
57    const AccessibilityChildrenVector& columns();
58    const AccessibilityChildrenVector& rows();
59
60    virtual bool supportsSelectedRows() { return false; }
61    unsigned columnCount();
62    unsigned rowCount();
63    virtual int tableLevel() const override;
64
65    virtual String title() const override;
66
67    // all the cells in the table
68    void cells(AccessibilityChildrenVector&);
69    AccessibilityTableCell* cellForColumnAndRow(unsigned column, unsigned row);
70
71    void columnHeaders(AccessibilityChildrenVector&);
72    void rowHeaders(AccessibilityChildrenVector&);
73    void visibleRows(AccessibilityChildrenVector&);
74
75    // an object that contains, as children, all the objects that act as headers
76    AccessibilityObject* headerContainer();
77
78protected:
79    AccessibilityChildrenVector m_rows;
80    AccessibilityChildrenVector m_columns;
81
82    RefPtr<AccessibilityObject> m_headerContainer;
83    bool m_isAccessibilityTable;
84
85    bool hasARIARole() const;
86
87    // isTable is whether it's an AccessibilityTable object.
88    virtual bool isTable() const override { return true; }
89    // isAccessibilityTable is whether it is exposed as an AccessibilityTable to the platform.
90    virtual bool isAccessibilityTable() const override;
91    // isDataTable is whether it is exposed as an AccessibilityTable because the heuristic
92    // think this "looks" like a data-based table (instead of a table used for layout).
93    virtual bool isDataTable() const override;
94
95    virtual bool isTableExposableThroughAccessibility() const;
96    virtual bool computeAccessibilityIsIgnored() const override;
97
98private:
99    virtual void titleElementText(Vector<AccessibilityText>&) const override;
100    HTMLTableElement* tableElement() const;
101    void addChildrenFromSection(RenderTableSection*, unsigned& maxColumnCount);
102};
103
104ACCESSIBILITY_OBJECT_TYPE_CASTS(AccessibilityTable, isTable())
105
106} // namespace WebCore
107
108#endif // AccessibilityTable_h
109