| /* |
| * 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. |
| */ |
| |
| #ifndef NodeChildRemovalTracker_h |
| #define NodeChildRemovalTracker_h |
| |
| #include "core/dom/Node.h" |
| |
| namespace WebCore { |
| |
| class NodeChildRemovalTracker { |
| public: |
| explicit NodeChildRemovalTracker(Node*); |
| ~NodeChildRemovalTracker(); |
| |
| static bool isBeingRemoved(Node*); |
| |
| private: |
| Node* node() const { return m_node; } |
| NodeChildRemovalTracker* previous() { return m_previous; } |
| |
| Node* m_node; |
| NodeChildRemovalTracker* m_previous; |
| static NodeChildRemovalTracker* s_last; |
| }; |
| |
| inline NodeChildRemovalTracker::NodeChildRemovalTracker(Node* node) |
| : m_node(node) |
| , m_previous(s_last) |
| { |
| s_last = this; |
| } |
| |
| inline NodeChildRemovalTracker::~NodeChildRemovalTracker() |
| { |
| s_last = m_previous; |
| } |
| |
| inline bool NodeChildRemovalTracker::isBeingRemoved(Node* node) |
| { |
| for (NodeChildRemovalTracker* removal = s_last; removal; removal = removal->previous()) { |
| if (removal->node()->containsIncludingShadowDOM(node)) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| } // namespace |
| |
| #endif |