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/*
* 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::determineAccessibilityRole()
{
if (!isTableRow())
return AccessibilityRenderObject::determineAccessibilityRole();
m_ariaRole = determineAriaRoleAttribute();
AccessibilityRole ariaRole = ariaRoleAttribute();
if (ariaRole != UnknownRole)
return ariaRole;
return RowRole;
}
bool AccessibilityTableRow::isTableRow() const
{
AccessibilityObject* table = parentTable();
if (!table || !table->isAccessibilityTable())
return false;
return true;
}
AccessibilityObject* AccessibilityTableRow::observableObject() const
{
// This allows the table to be the one who sends notifications about tables.
return parentTable();
}
bool AccessibilityTableRow::computeAccessibilityIsIgnored() const
{
AccessibilityObjectInclusion decision = defaultObjectInclusion();
if (decision == IncludeObject)
return false;
if (decision == IgnoreObject)
return true;
if (!isTableRow())
return AccessibilityRenderObject::computeAccessibilityIsIgnored();
return false;
}
AccessibilityObject* AccessibilityTableRow::parentTable() const
{
// The parent table might not be the direct ancestor of the row unfortunately. ARIA states that role="grid" should
// only have "row" elements, but if not, we still should handle it gracefully by finding the right table.
for (AccessibilityObject* parent = parentObject(); parent; parent = parent->parentObject()) {
// If this is a table object, but not an accessibility table, we should stop because we don't want to
// choose another ancestor table as this row's table.
if (parent->isTable())
return parent->isAccessibilityTable() ? parent : 0;
}
return 0;
}
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
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