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/*
* Copyright (C) 2009 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 "modules/accessibility/AXARIAGrid.h"
#include "core/rendering/RenderObject.h"
#include "modules/accessibility/AXObjectCacheImpl.h"
#include "modules/accessibility/AXTableColumn.h"
#include "modules/accessibility/AXTableRow.h"
namespace blink {
AXARIAGrid::AXARIAGrid(RenderObject* renderer, AXObjectCacheImpl* axObjectCache)
: AXTable(renderer, axObjectCache)
{
}
AXARIAGrid::~AXARIAGrid()
{
}
PassRefPtr<AXARIAGrid> AXARIAGrid::create(RenderObject* renderer, AXObjectCacheImpl* axObjectCache)
{
return adoptRef(new AXARIAGrid(renderer, axObjectCache));
}
bool AXARIAGrid::addTableCellChild(AXObject* child, HashSet<AXObject*>& appendedRows, unsigned& columnCount)
{
if (!child || !child->isTableRow() || child->ariaRoleAttribute() != RowRole)
return false;
AXTableRow* row = toAXTableRow(child);
if (appendedRows.contains(row))
return false;
// store the maximum number of columns
unsigned rowCellCount = row->children().size();
if (rowCellCount > columnCount)
columnCount = rowCellCount;
row->setRowIndex((int)m_rows.size());
m_rows.append(row);
// Try adding the row if it's not ignoring accessibility,
// otherwise add its children (the cells) as the grid's children.
if (!row->accessibilityIsIgnored())
m_children.append(row);
else
m_children.appendVector(row->children());
appendedRows.add(row);
return true;
}
void AXARIAGrid::addChildren()
{
ASSERT(!m_haveChildren);
if (!isAXTable()) {
AXRenderObject::addChildren();
return;
}
m_haveChildren = true;
if (!m_renderer)
return;
AXObjectCacheImpl* axCache = axObjectCache();
// add only rows that are labeled as aria rows
HashSet<AXObject*> appendedRows;
unsigned columnCount = 0;
for (RefPtr<AXObject> child = firstChild(); child; child = child->nextSibling()) {
if (!addTableCellChild(child.get(), appendedRows, columnCount)) {
// in case the render tree doesn't match the expected ARIA hierarchy, look at the children
if (!child->hasChildren())
child->addChildren();
// The children of this non-row will contain all non-ignored elements (recursing to find them).
// This allows the table to dive arbitrarily deep to find the rows.
AccessibilityChildrenVector children = child->children();
size_t length = children.size();
for (size_t i = 0; i < length; ++i)
addTableCellChild(children[i].get(), appendedRows, columnCount);
}
}
// make the columns based on the number of columns in the first body
for (unsigned i = 0; i < columnCount; ++i) {
AXTableColumn* column = toAXTableColumn(axCache->getOrCreate(ColumnRole));
column->setColumnIndex((int)i);
column->setParent(this);
m_columns.append(column);
if (!column->accessibilityIsIgnored())
m_children.append(column);
}
AXObject* headerContainerObject = headerContainer();
if (headerContainerObject && !headerContainerObject->accessibilityIsIgnored())
m_children.append(headerContainerObject);
}
} // namespace blink
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