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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
* Copyright (C) 2013 Igalia S.L. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 "OrderIterator.h"
#include "RenderFlexibleBox.h"
#include "RenderGrid.h"
namespace WebCore {
static const int cInvalidIndex = -1;
OrderIterator::OrderIterator(RenderBox& containerBox)
: m_containerBox(containerBox)
{
reset();
}
void OrderIterator::setOrderValues(OrderValues&& orderValues)
{
reset();
m_orderValues = std::move(orderValues);
if (m_orderValues.size() < 2)
return;
std::sort(m_orderValues.begin(), m_orderValues.end());
auto nextElement = std::unique(m_orderValues.begin(), m_orderValues.end());
m_orderValues.shrinkCapacity(nextElement - m_orderValues.begin());
}
RenderBox* OrderIterator::first()
{
reset();
return next();
}
RenderBox* OrderIterator::next()
{
int endIndex = m_orderValues.size();
do {
if (m_currentChild) {
m_currentChild = m_currentChild->nextSiblingBox();
continue;
}
if (m_orderIndex == endIndex)
return nullptr;
if (m_orderIndex != cInvalidIndex) {
++m_orderIndex;
if (m_orderIndex == endIndex)
return nullptr;
} else
m_orderIndex = 0;
m_currentChild = m_containerBox.firstChildBox();
} while (!m_currentChild || m_currentChild->style().order() != m_orderValues[m_orderIndex]);
return m_currentChild;
}
void OrderIterator::reset()
{
m_currentChild = nullptr;
m_orderIndex = cInvalidIndex;
}
} // namespace WebCore
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