/*

 * Copyright (C) 2008 Apple Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 * 2.  Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "config.h"

#include "AccessibilityTableRow.h"

#include "AXObjectCache.h"

#include "AccessibilityTableCell.h"

#include "HTMLNames.h"

#include "HTMLTableRowElement.h"

#include "RenderObject.h"

#include "RenderTableCell.h"

#include "RenderTableRow.h"

using namespace std;

namespace WebCore {

using namespace HTMLNames;

AccessibilityTableRow::AccessibilityTableRow(RenderObject* renderer)

    : AccessibilityRenderObject(renderer)

{

}

AccessibilityTableRow::~AccessibilityTableRow()

{

}

PassRefPtr<AccessibilityTableRow> AccessibilityTableRow::create(RenderObject* renderer)

{

    return adoptRef(new AccessibilityTableRow(renderer));

}

AccessibilityRole AccessibilityTableRow::roleValue() const

{

    if (!isTableRow())

        return AccessibilityRenderObject::roleValue();

    return RowRole;

}

bool AccessibilityTableRow::isTableRow() const

{

    AccessibilityObject* table = parentTable();

    if (!table || !table->isDataTable())

        return false;

    return true;

}

bool AccessibilityTableRow::accessibilityIsIgnored() const

{    

    AccessibilityObjectInclusion decision = accessibilityIsIgnoredBase();

    if (decision == IncludeObject)

        return false;

    if (decision == IgnoreObject)

        return true;

    if (!isTableRow())

        return AccessibilityRenderObject::accessibilityIsIgnored();

    return false;

}

AccessibilityObject* AccessibilityTableRow::parentTable() const

{

    if (!m_renderer || !m_renderer->isTableRow())

        return 0;

    return axObjectCache()->getOrCreate(toRenderTableRow(m_renderer)->table());

}

AccessibilityObject* AccessibilityTableRow::headerObject()

{

    if (!m_renderer || !m_renderer->isTableRow())

        return 0;

    AccessibilityChildrenVector rowChildren = children();

    if (!rowChildren.size())

        return 0;

    // check the first element in the row to see if it is a TH element

    AccessibilityObject* cell = rowChildren[0].get();

    if (!cell->isTableCell())

        return 0;

    RenderObject* cellRenderer = static_cast<AccessibilityTableCell*>(cell)->renderer();

    if (!cellRenderer)

        return 0;

    Node* cellNode = cellRenderer->node();

    if (!cellNode || !cellNode->hasTagName(thTag))

        return 0;

    return cell;

}

} // namespace WebCore