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/*
* Copyright (C) 2013 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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 "core/dom/shadow/DistributedNodes.h"
#include "core/dom/shadow/InsertionPoint.h"
namespace blink {
void DistributedNodes::swap(DistributedNodes& other) {
m_nodes.swap(other.m_nodes);
m_indices.swap(other.m_indices);
}
void DistributedNodes::append(Node* node) {
DCHECK(node);
DCHECK(!node->isActiveSlotOrActiveInsertionPoint());
size_t size = m_nodes.size();
m_indices.set(node, size);
m_nodes.push_back(node);
}
size_t DistributedNodes::find(const Node* node) const {
HeapHashMap<Member<const Node>, size_t>::const_iterator it =
m_indices.find(node);
if (it == m_indices.end())
return kNotFound;
return it.get()->value;
}
Node* DistributedNodes::nextTo(const Node* node) const {
size_t index = find(node);
if (index == kNotFound || index + 1 == size())
return 0;
return at(index + 1);
}
Node* DistributedNodes::previousTo(const Node* node) const {
size_t index = find(node);
if (index == kNotFound || !index)
return 0;
return at(index - 1);
}
DEFINE_TRACE(DistributedNodes) {
visitor->trace(m_nodes);
visitor->trace(m_indices);
}
} // namespace blink
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