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      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 Computer, 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 "core/accessibility/AccessibilityRenderObject.h"
     33 #include "wtf/Forward.h"
     34 
     35 namespace WebCore {
     36 
     37 class AccessibilityTableCell;
     38 class RenderTableSection;
     39 
     40 class AccessibilityTable : public AccessibilityRenderObject {
     41 
     42 protected:
     43     explicit AccessibilityTable(RenderObject*);
     44 public:
     45     static PassRefPtr<AccessibilityTable> create(RenderObject*);
     46     virtual ~AccessibilityTable();
     47 
     48     virtual void init() OVERRIDE;
     49 
     50     virtual bool isAccessibilityTable() const OVERRIDE;
     51     virtual bool isDataTable() const OVERRIDE;
     52 
     53     virtual AccessibilityRole roleValue() const OVERRIDE;
     54 
     55     virtual void addChildren() OVERRIDE;
     56     virtual void clearChildren() OVERRIDE;
     57 
     58     // To be overridden by AccessibilityARIAGrid.
     59     virtual bool isAriaTable() const { return false; }
     60     virtual bool supportsSelectedRows() { return false; }
     61 
     62     AccessibilityChildrenVector& columns();
     63     AccessibilityChildrenVector& rows();
     64 
     65     unsigned columnCount();
     66     unsigned rowCount();
     67     virtual int tableLevel() const OVERRIDE;
     68 
     69     virtual String title() const OVERRIDE;
     70 
     71     // all the cells in the table
     72     void cells(AccessibilityChildrenVector&);
     73     AccessibilityTableCell* cellForColumnAndRow(unsigned column, unsigned row);
     74 
     75     void columnHeaders(AccessibilityChildrenVector&);
     76 
     77     // an object that contains, as children, all the objects that act as headers
     78     AccessibilityObject* headerContainer();
     79 
     80 protected:
     81     AccessibilityChildrenVector m_rows;
     82     AccessibilityChildrenVector m_columns;
     83 
     84     RefPtr<AccessibilityObject> m_headerContainer;
     85     bool m_isAccessibilityTable;
     86 
     87     bool hasARIARole() const;
     88     virtual bool isTableExposableThroughAccessibility() const;
     89     virtual bool computeAccessibilityIsIgnored() const OVERRIDE;
     90 };
     91 
     92 inline AccessibilityTable* toAccessibilityTable(AccessibilityObject* object)
     93 {
     94     ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isAccessibilityTable());
     95     return static_cast<AccessibilityTable*>(object);
     96 }
     97 
     98 } // namespace WebCore
     99 
    100 #endif // AccessibilityTable_h
    101