| /* |
| * Copyright (C) 2015 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 "core/html/HTMLSlotElement.h" |
| |
| #include "core/HTMLNames.h" |
| #include "core/dom/NodeTraversal.h" |
| #include "core/dom/shadow/InsertionPoint.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| inline HTMLSlotElement::HTMLSlotElement(Document& document) |
| : HTMLElement(slotTag, document) |
| { |
| } |
| |
| DEFINE_NODE_FACTORY(HTMLSlotElement); |
| |
| void HTMLSlotElement::appendAssignedNode(Node& node) |
| { |
| m_assignedNodes.append(&node); |
| } |
| |
| void HTMLSlotElement::appendDistributedNode(Node& node) |
| { |
| m_distributedNodes.append(&node); |
| } |
| |
| void HTMLSlotElement::appendDistributedNodes(const WillBeHeapVector<RefPtrWillBeMember<Node>>& nodes) |
| { |
| m_distributedNodes.appendVector(nodes); |
| } |
| |
| void HTMLSlotElement::clearDistribution() |
| { |
| m_assignedNodes.clear(); |
| m_distributedNodes.clear(); |
| } |
| |
| Node* HTMLSlotElement::distributedNodeNextTo(const Node& node) const |
| { |
| size_t index = m_distributedNodes.find(&node); |
| if (index == kNotFound || index + 1 == m_distributedNodes.size()) |
| return nullptr; |
| return m_distributedNodes[index + 1].get(); |
| } |
| |
| Node* HTMLSlotElement::distributedNodePreviousTo(const Node& node) const |
| { |
| size_t index = m_distributedNodes.find(&node); |
| if (index == kNotFound || index == 0) |
| return nullptr; |
| return m_distributedNodes[index - 1].get(); |
| } |
| |
| void HTMLSlotElement::attach(const AttachContext& context) |
| { |
| for (auto& node : m_distributedNodes) { |
| if (node->needsAttach()) |
| node->attach(context); |
| } |
| |
| HTMLElement::attach(context); |
| } |
| |
| void HTMLSlotElement::detach(const AttachContext& context) |
| { |
| for (auto& node : m_distributedNodes) |
| node->lazyReattachIfAttached(); |
| |
| HTMLElement::detach(context); |
| } |
| |
| void HTMLSlotElement::updateDistributedNodesWithFallback() |
| { |
| if (!m_distributedNodes.isEmpty()) |
| return; |
| for (auto& child : NodeTraversal::childrenOf(*this)) { |
| // Insertion points are not supported as slots fallback |
| if (isActiveInsertionPoint(child)) |
| continue; |
| if (isHTMLSlotElement(child)) |
| appendDistributedNodes(toHTMLSlotElement(child).getDistributedNodes()); |
| else |
| appendDistributedNode(child); |
| } |
| } |
| |
| DEFINE_TRACE(HTMLSlotElement) |
| { |
| visitor->trace(m_assignedNodes); |
| visitor->trace(m_distributedNodes); |
| HTMLElement::trace(visitor); |
| } |
| |
| } |