/*
* 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