| /* |
| * Copyright (C) 2011 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. |
| * * 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 "third_party/blink/renderer/core/layout/order_iterator.h" |
| |
| #include "third_party/blink/renderer/core/layout/layout_box.h" |
| |
| namespace blink { |
| |
| OrderIterator::OrderIterator(const LayoutBox* container_box) |
| : container_box_(container_box) {} |
| |
| LayoutBox* OrderIterator::First() { |
| Reset(); |
| return Next(); |
| } |
| |
| LayoutBox* OrderIterator::Next() { |
| do { |
| if (!current_child_) { |
| if (order_values_iterator_ == order_values_.end()) |
| return nullptr; |
| |
| if (!is_reset_) { |
| ++order_values_iterator_; |
| if (order_values_iterator_ == order_values_.end()) |
| return nullptr; |
| } else { |
| is_reset_ = false; |
| } |
| |
| current_child_ = container_box_->FirstChildBox(); |
| } else { |
| current_child_ = current_child_->NextSiblingBox(); |
| } |
| } while (!current_child_ || |
| ResolvedOrder(*current_child_) != *order_values_iterator_); |
| |
| return current_child_; |
| } |
| |
| void OrderIterator::Reset() { |
| current_child_ = nullptr; |
| order_values_iterator_ = order_values_.begin(); |
| is_reset_ = true; |
| } |
| |
| int OrderIterator::ResolvedOrder(const LayoutBox& child) const { |
| if (container_box_->StyleRef().IsDeprecatedWebkitBox()) |
| return child.StyleRef().BoxOrdinalGroup(); |
| return child.StyleRef().Order(); |
| } |
| |
| OrderIteratorPopulator::~OrderIteratorPopulator() { |
| iterator_.Reset(); |
| } |
| |
| void OrderIteratorPopulator::CollectChild(const LayoutBox* child) { |
| iterator_.order_values_.insert(iterator_.ResolvedOrder(*child)); |
| } |
| |
| } // namespace blink |